CA2045822A1 - Hoisting boom assembly - Google Patents
Hoisting boom assemblyInfo
- Publication number
- CA2045822A1 CA2045822A1 CA002045822A CA2045822A CA2045822A1 CA 2045822 A1 CA2045822 A1 CA 2045822A1 CA 002045822 A CA002045822 A CA 002045822A CA 2045822 A CA2045822 A CA 2045822A CA 2045822 A1 CA2045822 A1 CA 2045822A1
- Authority
- CA
- Canada
- Prior art keywords
- boom
- section
- hoisting
- horizontal shift
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/025—Rock drills, i.e. jumbo drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/54—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/027—Drills for drilling shallow holes, e.g. for taking soil samples or for drilling postholes
- E21B7/028—Drills for drilling shallow holes, e.g. for taking soil samples or for drilling postholes the drilling apparatus being detachable from the vehicle, e.g. hand portable drills
Abstract
(57) Abstract The invention relates to a hoisting boom assembly having its frame (R) and actuators (KT, ET, TT) coupled with a mobile working machine (TR), said hoisting boom assembly comprising; an upright column (1) associated with frame (R) and pivotable around a vertical axis by means of a rotary actuator (KT);
a second boom (3) having its first section (I) journalled (4) to be pivotable in vertical plane and having its second section (II) journalled (5) to first section (I) to be also pivotable in vertical plane; a horizontal shift mechanism (VM) as well as a horizontal shift actuator (TT) for carrying in horizontal direction a free end (6) included in second boom (3); a first boom (2) fitted between upright column (1) and second boom 13) and pivotally (EN) mounted by its first end on upright column (1), preferably on the top section the-eof, and pivotally (4, 8) mounted by its second end on second boom (3);
and an actuator (ET) fitted between upright column (1) and first boom (2) for pivoting said first boom (2) in vertical plane relative to upright column (1).
In order to improve the performance of a hoisting boom assembly, said hoisting boom assembly further includes compensating means (EX) for equalizing the forces caused by the operation of a hoisting boom assembly, particularly in situations following and preceding a first and/or a second extreme position (TA, TB) assumed by second boom (3), whereby its first section (I) and second section (II) are pivot-ing away from or towards each other.
Fig. 1
a second boom (3) having its first section (I) journalled (4) to be pivotable in vertical plane and having its second section (II) journalled (5) to first section (I) to be also pivotable in vertical plane; a horizontal shift mechanism (VM) as well as a horizontal shift actuator (TT) for carrying in horizontal direction a free end (6) included in second boom (3); a first boom (2) fitted between upright column (1) and second boom 13) and pivotally (EN) mounted by its first end on upright column (1), preferably on the top section the-eof, and pivotally (4, 8) mounted by its second end on second boom (3);
and an actuator (ET) fitted between upright column (1) and first boom (2) for pivoting said first boom (2) in vertical plane relative to upright column (1).
In order to improve the performance of a hoisting boom assembly, said hoisting boom assembly further includes compensating means (EX) for equalizing the forces caused by the operation of a hoisting boom assembly, particularly in situations following and preceding a first and/or a second extreme position (TA, TB) assumed by second boom (3), whereby its first section (I) and second section (II) are pivot-ing away from or towards each other.
Fig. 1
Description
Improvement for a hoi.sting boo~l assembly The present inven-tion relates to a hoisting boom assem-bly, whose frame and ac-tua-tors are in-tended to be cou-pled with a mobile working machine, said hoisting boom assembly comprising: an upright column or a like asso-ciated with the frame and adapted to be at least par-tially ro-tatable around a vertical axis by means of a rotary actuator; a second boom haviny i-ts :Eirst section journalled to be pivotable in vertical plane and its second section journalled to the :Elrst section to be also pivotable in vertical plane; a horizontal shi:E-t mechanism as well as a horizontal shift actuator for shifting the free end of said second boom in horizontal direction, said horizontal shift mechanism being adapt-ed to act between a first boom and said sections of the second boom in a manner that the horizon-tal shift mech-anism can be operated between the sections of the second boom independently from the position of a first boom;
a first boom fitted between the upright column or a like and the second boom and having its first end pivot-ally mounted on the upright column or a like, preferably on the top section thereof, and having its second end pivo-t-ally mounted on the second boom; and an actuator fitted between the upright column or a like and the first boom for pivoting the first boom in vertical plane relative to the upright column or a like.
When manipulating the hoisting boom assembly, the opera-ting range of a second boom is defined in,~ manner that in a first extreme position of said second boom -the longitudinal direction of its second section is substan-tiall~ parallel to the longitudinal direction of a first section, the second section serving as an extension or a jib for the first section and, in a second extreme posi-tion of -the secon~ boom, the longitudinal direction of its second sec-tion is substantially opposite to -the longitudinal direction of the first section, said sec-ond section being thus associated with the firs-t sec-tion, preferably tangential to the first section. A
particular object of the invention is a hoisting boom assembly suitable for use wi-t:h a loading harvester.
In the past, a loadi.ng harvester has been yenerally fitted with a hoisting boom assembly provided with two booms, a lifting boom and a carrier boom. When this type of hoistiny boom assembly is operated to carry a load in the direction of a crane, it is necessary to operate both the lifting and the carrier boom. This results in a complicated operation of the hoisting boom assembly. In order to achieve a major operating range or reach, the carrier boom generally comprises a tele-scopic boom. However, this results in a heavy overall hoisting boom assembly and particularly the passage of a pressure medium or hydraulic fluid to -the end of a boom assembly is technically difficu]t to carry out.
In order to eliminate the above drawbacks, e~g. the FI
Publication print 383 991 discloses hoisting boom as-semblies operating in a manner that a single actuator, especially a hydraulically operated cylinder-piston aggregate, is used to produce a linear movement in hori-zontal direction. In the prior known hoisting boom as-semblies, this boom arrangement is journalled directly to an upright column which is in turn coupled with the body of a mobile working machine, such as a tractor.
A drawback in this structure is, however, that the boom assembly will be very long and will have a high centre of gravity. A high centre of gravity resuIts from the fact that the upright column must be sufficiently long in order that the hois-ting boom assembly can be pivot~
ed to lie above the operator's cabin in a -transporting position.
The Applicant's Finnish Patent publication No. 82826, en-titled "Hoisting boom assembly", discloses a solution which is further developed rela-t:ive to the prior ar-t hoisting boom constructions, such as those mentioned above. Unlike -the prior art, this cited publication discloses a hoistiny boom assembly, compr:ising: a first boom fitted between an upright column and a second boom and having its first end pivotally mounted on the up-right column and its second end pivotally mounted on -the second hoom; an actua-tor fitted between the upriyht column and the first boom for pivoting said firs-t boom in vertical plane relative to the upright column; and said hoisting boom assembly including a horizontal shift mechanism which is adapted to act between said first boom and the sections of said second boom in a manner that it is possible to operate said horizontal shift mechanism between the sections of said second boom in dependently from the position of said first boom.
The principal benefits gained by the above solution over the prior art include e.g. the following aspects:
The vertical shifts of a load carried on the free end of a second section can be effected by pivoting the first boom in vertical plane. An actuator acting be--tween the upright column and the first boom is suffi-cient for carrying out this function. The horizontal shifts of a load can be effected with a pivoti~g move-ment of the second boom sections in vertical plane by utilizing a horizontal shift mechanism and a horizontal shift actuator. In practical applications~ the hoisting boom assembly will have a low centre of gravity partic-. .
a first boom fitted between the upright column or a like and the second boom and having its first end pivot-ally mounted on the upright column or a like, preferably on the top section thereof, and having its second end pivo-t-ally mounted on the second boom; and an actuator fitted between the upright column or a like and the first boom for pivoting the first boom in vertical plane relative to the upright column or a like.
When manipulating the hoisting boom assembly, the opera-ting range of a second boom is defined in,~ manner that in a first extreme position of said second boom -the longitudinal direction of its second section is substan-tiall~ parallel to the longitudinal direction of a first section, the second section serving as an extension or a jib for the first section and, in a second extreme posi-tion of -the secon~ boom, the longitudinal direction of its second sec-tion is substantially opposite to -the longitudinal direction of the first section, said sec-ond section being thus associated with the firs-t sec-tion, preferably tangential to the first section. A
particular object of the invention is a hoisting boom assembly suitable for use wi-t:h a loading harvester.
In the past, a loadi.ng harvester has been yenerally fitted with a hoisting boom assembly provided with two booms, a lifting boom and a carrier boom. When this type of hoistiny boom assembly is operated to carry a load in the direction of a crane, it is necessary to operate both the lifting and the carrier boom. This results in a complicated operation of the hoisting boom assembly. In order to achieve a major operating range or reach, the carrier boom generally comprises a tele-scopic boom. However, this results in a heavy overall hoisting boom assembly and particularly the passage of a pressure medium or hydraulic fluid to -the end of a boom assembly is technically difficu]t to carry out.
In order to eliminate the above drawbacks, e~g. the FI
Publication print 383 991 discloses hoisting boom as-semblies operating in a manner that a single actuator, especially a hydraulically operated cylinder-piston aggregate, is used to produce a linear movement in hori-zontal direction. In the prior known hoisting boom as-semblies, this boom arrangement is journalled directly to an upright column which is in turn coupled with the body of a mobile working machine, such as a tractor.
A drawback in this structure is, however, that the boom assembly will be very long and will have a high centre of gravity. A high centre of gravity resuIts from the fact that the upright column must be sufficiently long in order that the hois-ting boom assembly can be pivot~
ed to lie above the operator's cabin in a -transporting position.
The Applicant's Finnish Patent publication No. 82826, en-titled "Hoisting boom assembly", discloses a solution which is further developed rela-t:ive to the prior ar-t hoisting boom constructions, such as those mentioned above. Unlike -the prior art, this cited publication discloses a hoistiny boom assembly, compr:ising: a first boom fitted between an upright column and a second boom and having its first end pivotally mounted on the up-right column and its second end pivotally mounted on -the second hoom; an actua-tor fitted between the upriyht column and the first boom for pivoting said firs-t boom in vertical plane relative to the upright column; and said hoisting boom assembly including a horizontal shift mechanism which is adapted to act between said first boom and the sections of said second boom in a manner that it is possible to operate said horizontal shift mechanism between the sections of said second boom in dependently from the position of said first boom.
The principal benefits gained by the above solution over the prior art include e.g. the following aspects:
The vertical shifts of a load carried on the free end of a second section can be effected by pivoting the first boom in vertical plane. An actuator acting be--tween the upright column and the first boom is suffi-cient for carrying out this function. The horizontal shifts of a load can be effected with a pivoti~g move-ment of the second boom sections in vertical plane by utilizing a horizontal shift mechanism and a horizontal shift actuator. In practical applications~ the hoisting boom assembly will have a low centre of gravity partic-. .
2 ~ 2 ularly Eor the reason that the assembly includes a firs-t boom, whose pivoting movement in vertical plane can be used for shifting the centre of gravlty of said hoisting boom assembly to a position most advantageous in view of operation. Thus, the hoisting boom assembly can be laid on top of a mobile working machine, such as a tractor, in a transporting position, whereby the first boom is lifted to an uprigh-t position to extend parallel to the upright column. In order to facilitate this, -the sections of a second boom are pivoted to lie parallel to and on top of each other in horizontal direc-tion and, thus, said sections can be laied in the longitudinal direction of a working machine by pivoting the upright column to a position appropriate for this purpose.
A hoisting boom assembly disclosed in the Applicant's above-cited earlier Patent publication has proved prac-tically useful and, thus, it has achieved a firm foot-hold on a market for hoist assemblies. I-ts undeniable advantages over the prior art solutions include the simplicity an~ reliability of both its construction and application. ~Iowever, in certain practical situations, e.g. when carrying a load iIl a suitably inclined posi-tion of a working machine, there has been found a prob-lem that in all conditions the controllability of a hoisting boom assembly is not best possible. Thus, especially with a hoisting boom assembly in its second extreme position, when the first and second section of the second boom are completely pivoted into contact with each other, a result of a load carried by the hoisting boom assembly is that, when manipulating said hoisting boom assembly, the sections of the second boom have a ~uite substantial traveling speed in situations follow-ing or preceding said second e~treme position and, thus, the forces acting in the hoidting boom assembly are 2 ?J
quite substan-tial. Thus, the operator of a hoistiny boom assembly is required to have professional skill and accuracy for controlling the operation of a hoist-ing boom assembly in a manner that excessive travelling speeds and abrupt halts are avoided.
The above drawback is essentially due to the fact tha-t a first transmission rod included in the horizontal shift mechanism and a horizontal shiEt actuator included in the horizontal shiEt mechanism are pivotally mounted at -the same point. Thus, in the second extreme posi tion of -the second boom, said horizon~al sh.ift actuator extends in a direction nearly identical to that of the first and second section of the second boom, whereby an ac-tive force produced by the horizontal shift actuator includes a component force directed perpendicularly to the sections of said second boom and having an opening effect, this component force being very small relative to a component force parallel to the sections of a hoist-ing boom. Thus, the horizontal shift actuator does not function in an ideal fashion, since a force effec-t pro-duced thereby is unfavourable particularly in the sec-ond extreme position of the second boom. Such disposi-tion of a horizontal shift actuator also results in that, depending on a load carried by the hoisting boom assem-bly, the travelling speeds of the sections included in ~ a hoistiny boom assembly in situations close to the sec-ond extreme position vary to a great degree due to the major forces of said horizontal shift actuator. Thus, : the function of a hoisting boom assembly must be known in detail in order to rela-te the operation of a hori-zontal shift actuator to various loads~
An object of a hoisting boom assembly of this invention is to provide a decisive improvement for the above draw-`:
:
~' . ` ` ~ . .
.
6 ~ ) 2 ~
backs and, thus, to raise substan-tially -the available prior art. In order to achieve this object, a hoist-ing boom assembly of the invention is principally char-acterized in that, for improving the operation of a hois-ting boom assembly, said hoisting boom assembly in-cludes compensating means for equalizing the forces crea-ted by the movement of a hoisting boom assembly at leas-t wi-thin the operating range of a second boom, par-ticularly in situations essentially following and pre-ceding the Eirst and/or second e~treme posi-tion of a seaond boom, whereby the first section and the second section are pivoting away from or towards each other.
One of the most importan-t benefits gained by a hoistiny boom assembly of the invention is particularly the con-trollability of its opera-tion on various loads. Thus, a hoisting boom assembly designed according to the in-vention is readily controllable in all conditions, where-by the operator of such hoisting boom assembly is not required to apply special alertness or professional skill in the operation of a hoisting boom assembly.
This is by virtue of the fact that, over the entire opera-ting ran~e of a hoisting boom assembly, its operating speed as w211 as the component forces created by opera~
ting a hoisting boom assembly over that range, can be compensated according to the invention in a manner super-ior to what can be achieved at present. Thus, the inven-tion facilitates the ideal operation of a hoisting boom assembl.y particularly in difficult conditions as well as stressed under varying loads.
The other non-independent claims directed to a hoisting boom assembly set forth preferred embodiments for a hoist-ing boom assembly of the invention.
2 ~ 3 The invention will now be described in more de-tail with reference made to the accompanying drawings, in which fig. 1 is a side view showing a first embodiment of a hoisting boom assembly of the inven-tion :in a first T~ and a second TB extreme positicn of its second boom 3, fig~ 2 is a side view showing a second embodiment of a hoisting boom assembly of the invention, and fig. 3 shows the first embodiment o;E a hois-ting boom assembly of the inven-tion, wherein the hoisting boom assembly is o:n the one hand shown in an operating position TA and on the other hand in a transporting position KA and wherein the hoist-iny boom assembly is mounted on the rear section of a working machi.ne TR, such as a tractor.
The invention relates to a hoisting boom assembly having its frame R and actuators KT, ET/ TT coupled with a mobile working machine TR, said hoisting boom assembly comprising; an upright column 1 associated with ~rame R and pivotable around a vertical axis by means of a rotary actuator KT; a second boom 3 having its firs-t section I journalled ~ pivotably in vertical plane and having its second section II journalled 5 -to first sec-tion I also pivotably in vertical plane; a horizontal shi~t mechanism VM as well as a horizontal shift actu-ator TT ~or carrying a free end 6 of second boom 3 in horizontal direction; a first boom 2 fitted between up-right column 1 and second boom 3 and journalled EN by its first end to upright column 1, preferably to the top section thereof, and journalled 4, 8 by its second .
end to second boom 3; and an actuator ET fitted between .
.
2 ~
uprigh-t column 1 and :Eirst boom 2 for pivoting said fi.rst boom 2 in vertical plane rel.ative to upright column 1. In view of improving its operation, said hoisting boom assembly further includes compensaking means EX for equalizing the forces created by opera-ting said hoisting boom assembly, especially in situ~
ations following and preceding said first and/or sec-ond extreme position TA, TB of second boom 3, wherein its first section I and second section II are pivoting away from or towards each other.
As shown in figs. 1-3, said horizontal shift mechanism VM is adapted to exert action between first boom 2 and sections I, II of second boom 3 in a manner that the operation of horizontal shift mechanism VM is possible between sections I, II of second boom 3 regardless of the position of first boom 2. The operating range of second boom 3 included in a hoisting boom assembly is such that, in said first extreme position TA of second boom 3, the longitudinal direction S2 of its second sec-tion II is substantially parallel to the longitudinal direction S1 of first section I, said second section II
serving as an extension or a jib for first section I
and, in said second extreme position TB of second boom 3, the longitudinal direction of its second section II
is substantially opposite to the longitudinal direction S1 of first section I, whereby said second section II
lies in contact with first section I, essentially tan-gential to first section I.
In the first embodiment of a hoisting boom assembly of the invention shown in fig. 1, one of the ends of first boom 2 is at one point pivotally 8 fitted with a first transmission rod 7 included in horizontal shift mecha-nism V~. In this embodiment, the compensating means EX
2s~, are included for equalizing -the forces crea-ted by -the operation of a hoisting boom as.sembly wi-thin bo-th ex-treme zones TA, TB of second boom 3. Thus, said com-pensating means EX are provided by positioning a pivot-ing point N, which links a horizontal shift actuator TT, included in horizontal shift mechanism VM and con-nected with first section I of second boom 3, -to first boom 2 and whose location is substantially diEferen-t from -that of pivoting point 8, said pivotiny point N
being located at a substantially smaller distance from a pivoting point EN linking upright column 1 and fi.rst boom 2 than said pivoting point 8 linking first trans-mission rod 7 and first boom 2.
Hence, the compensation of forces prevailing in the hoisting boom assembly in the extreme zones oE second boom 3 is based on the fact that, both in its first ex-treme position TA and in its second extreme position TB, the directions of component forces caused by hori-zontal shi~t actuator TT are nearly identical. Thus, unlike the prior art solution, wherein pivotin~ point N had the same location as pivoting point 8, the hoist-ing boom assembly operates in an identical fashion in situations according to both extreme positions TA, TB
thereof. This also contributes to the equalization of the operating speeds of a hoisting boom assembly, since in both extreme positions TA, TB, the corresponding strokes of horizontal shift actuator TT serve to pro-duce a corresponding movement of the hoisting boom as-sembly.
In the embodiment of fig. 1, one of the ends of first boom 2 is provided with a first lug 2a which is fitted with a pivo-ting point 8 for linking first transmission rod 7 and first boom 2~ Thus, as one preferred embodi-:' .
S~ , 2 2 ment, said first lug 2a is desiyned in a manner thatsaid hor.izontal shif-t actuator TT is adapted -to operate inside said firs-t luy 2a in a space between said pivot~
iny point 8 and first boom 2. In addition, a pivoting point ~ for linkiny horizontal shift actuator TT and first boom 2 is located in a second luy 2b associated with said first boom 2.
F'ig. 2 illus-trates a second embodiment for a hoisti.ny boom assembly of -the invention, wherein a horizontal shift mechanism VM for the hoistiny boom assembly com prises, -the same way as the first embodiment shown i.n fig. 1, a multi-link element 9 which is pivoted to a first transmission rod 7 by means of a link 10, to a first section I included in second boom 3 by means of a link 11, and to a second transmission rod 12 pivoted 14 to a second section II included in second boom 3 by means of a link 13. Thus, the compensating means EX
are included for equalizing the forces prevailing in horizontal shift actuator TT especially and essential-ly in second extreme operating range T~ of second boom 3. ~ence, the compensating means EX are designed by including a horizontal shift actuator TT which consists of two actuating means TT1, TT2, such as a pressure-medium operated cylinder or a like.
Said first and second actuating means TT1, TT2 of hori-zontal shift actuator TT are mounted to operate suc-cessively, in substantially diverging directions of ac-tion, essentially in the same vertical plane. Acutating means TT1, TT2 is pivotally mounted on first boom 2, on first secti.on I of second boom 3, and on horizontal shift mechanism VM. The first actuating means TT1 is linked by its first end to a pivoting point 8 connecting transmission rod 7 and first boom 2 and by its second 11 2 ~ 2J 2 end to a pivoti.ng point 16, ].ocated on a third lug 2c associated with firs-t section I of second boom 3. The second actuating means TT2 is linked by its first end to a pivoting point 17 included in third lug 2c and by its second end to a pivoting point 18 associa-ted with multi-link element S.
Thus, the second embodiment offers a solu-tion capable of equalizing the Eorces caused by the operation of a hois-ting boom assembly, especia:Lly in association with second extreme position TB, on two separate actuating means TT1, TT~ included in h.orizontal shift actuator TT.
However, this type of solution does not o~fer the same benefits as the first emhodiment, since the force ef-fect of power transmisslon unit TT is clearly more ad-vantageous in first extreme position TA than in second extreme position TB. Thusl it is natural that neither can the corresponding advantages gained in terms of the controllability of a hoisting boom assembly as readily as in the first embodiment.
Fig. 3 illustrates a hoisting boom assembly according to the first embodiment mounted on the rear section of a tractor TR, said assembly being shown in one of its operating positions TA and in its transporting position XA.
It is obvious that the invention is not limi.ted to the above embodiments but it can be modified to a great deal within the basic concept because of an extensive overall construction covered by a hoisting boom assembly.
~ , . .
.
A hoisting boom assembly disclosed in the Applicant's above-cited earlier Patent publication has proved prac-tically useful and, thus, it has achieved a firm foot-hold on a market for hoist assemblies. I-ts undeniable advantages over the prior art solutions include the simplicity an~ reliability of both its construction and application. ~Iowever, in certain practical situations, e.g. when carrying a load iIl a suitably inclined posi-tion of a working machine, there has been found a prob-lem that in all conditions the controllability of a hoisting boom assembly is not best possible. Thus, especially with a hoisting boom assembly in its second extreme position, when the first and second section of the second boom are completely pivoted into contact with each other, a result of a load carried by the hoisting boom assembly is that, when manipulating said hoisting boom assembly, the sections of the second boom have a ~uite substantial traveling speed in situations follow-ing or preceding said second e~treme position and, thus, the forces acting in the hoidting boom assembly are 2 ?J
quite substan-tial. Thus, the operator of a hoistiny boom assembly is required to have professional skill and accuracy for controlling the operation of a hoist-ing boom assembly in a manner that excessive travelling speeds and abrupt halts are avoided.
The above drawback is essentially due to the fact tha-t a first transmission rod included in the horizontal shift mechanism and a horizontal shiEt actuator included in the horizontal shiEt mechanism are pivotally mounted at -the same point. Thus, in the second extreme posi tion of -the second boom, said horizon~al sh.ift actuator extends in a direction nearly identical to that of the first and second section of the second boom, whereby an ac-tive force produced by the horizontal shift actuator includes a component force directed perpendicularly to the sections of said second boom and having an opening effect, this component force being very small relative to a component force parallel to the sections of a hoist-ing boom. Thus, the horizontal shift actuator does not function in an ideal fashion, since a force effec-t pro-duced thereby is unfavourable particularly in the sec-ond extreme position of the second boom. Such disposi-tion of a horizontal shift actuator also results in that, depending on a load carried by the hoisting boom assem-bly, the travelling speeds of the sections included in ~ a hoistiny boom assembly in situations close to the sec-ond extreme position vary to a great degree due to the major forces of said horizontal shift actuator. Thus, : the function of a hoisting boom assembly must be known in detail in order to rela-te the operation of a hori-zontal shift actuator to various loads~
An object of a hoisting boom assembly of this invention is to provide a decisive improvement for the above draw-`:
:
~' . ` ` ~ . .
.
6 ~ ) 2 ~
backs and, thus, to raise substan-tially -the available prior art. In order to achieve this object, a hoist-ing boom assembly of the invention is principally char-acterized in that, for improving the operation of a hois-ting boom assembly, said hoisting boom assembly in-cludes compensating means for equalizing the forces crea-ted by the movement of a hoisting boom assembly at leas-t wi-thin the operating range of a second boom, par-ticularly in situations essentially following and pre-ceding the Eirst and/or second e~treme posi-tion of a seaond boom, whereby the first section and the second section are pivoting away from or towards each other.
One of the most importan-t benefits gained by a hoistiny boom assembly of the invention is particularly the con-trollability of its opera-tion on various loads. Thus, a hoisting boom assembly designed according to the in-vention is readily controllable in all conditions, where-by the operator of such hoisting boom assembly is not required to apply special alertness or professional skill in the operation of a hoisting boom assembly.
This is by virtue of the fact that, over the entire opera-ting ran~e of a hoisting boom assembly, its operating speed as w211 as the component forces created by opera~
ting a hoisting boom assembly over that range, can be compensated according to the invention in a manner super-ior to what can be achieved at present. Thus, the inven-tion facilitates the ideal operation of a hoisting boom assembl.y particularly in difficult conditions as well as stressed under varying loads.
The other non-independent claims directed to a hoisting boom assembly set forth preferred embodiments for a hoist-ing boom assembly of the invention.
2 ~ 3 The invention will now be described in more de-tail with reference made to the accompanying drawings, in which fig. 1 is a side view showing a first embodiment of a hoisting boom assembly of the inven-tion :in a first T~ and a second TB extreme positicn of its second boom 3, fig~ 2 is a side view showing a second embodiment of a hoisting boom assembly of the invention, and fig. 3 shows the first embodiment o;E a hois-ting boom assembly of the inven-tion, wherein the hoisting boom assembly is o:n the one hand shown in an operating position TA and on the other hand in a transporting position KA and wherein the hoist-iny boom assembly is mounted on the rear section of a working machi.ne TR, such as a tractor.
The invention relates to a hoisting boom assembly having its frame R and actuators KT, ET/ TT coupled with a mobile working machine TR, said hoisting boom assembly comprising; an upright column 1 associated with ~rame R and pivotable around a vertical axis by means of a rotary actuator KT; a second boom 3 having its firs-t section I journalled ~ pivotably in vertical plane and having its second section II journalled 5 -to first sec-tion I also pivotably in vertical plane; a horizontal shi~t mechanism VM as well as a horizontal shift actu-ator TT ~or carrying a free end 6 of second boom 3 in horizontal direction; a first boom 2 fitted between up-right column 1 and second boom 3 and journalled EN by its first end to upright column 1, preferably to the top section thereof, and journalled 4, 8 by its second .
end to second boom 3; and an actuator ET fitted between .
.
2 ~
uprigh-t column 1 and :Eirst boom 2 for pivoting said fi.rst boom 2 in vertical plane rel.ative to upright column 1. In view of improving its operation, said hoisting boom assembly further includes compensaking means EX for equalizing the forces created by opera-ting said hoisting boom assembly, especially in situ~
ations following and preceding said first and/or sec-ond extreme position TA, TB of second boom 3, wherein its first section I and second section II are pivoting away from or towards each other.
As shown in figs. 1-3, said horizontal shift mechanism VM is adapted to exert action between first boom 2 and sections I, II of second boom 3 in a manner that the operation of horizontal shift mechanism VM is possible between sections I, II of second boom 3 regardless of the position of first boom 2. The operating range of second boom 3 included in a hoisting boom assembly is such that, in said first extreme position TA of second boom 3, the longitudinal direction S2 of its second sec-tion II is substantially parallel to the longitudinal direction S1 of first section I, said second section II
serving as an extension or a jib for first section I
and, in said second extreme position TB of second boom 3, the longitudinal direction of its second section II
is substantially opposite to the longitudinal direction S1 of first section I, whereby said second section II
lies in contact with first section I, essentially tan-gential to first section I.
In the first embodiment of a hoisting boom assembly of the invention shown in fig. 1, one of the ends of first boom 2 is at one point pivotally 8 fitted with a first transmission rod 7 included in horizontal shift mecha-nism V~. In this embodiment, the compensating means EX
2s~, are included for equalizing -the forces crea-ted by -the operation of a hoisting boom as.sembly wi-thin bo-th ex-treme zones TA, TB of second boom 3. Thus, said com-pensating means EX are provided by positioning a pivot-ing point N, which links a horizontal shift actuator TT, included in horizontal shift mechanism VM and con-nected with first section I of second boom 3, -to first boom 2 and whose location is substantially diEferen-t from -that of pivoting point 8, said pivotiny point N
being located at a substantially smaller distance from a pivoting point EN linking upright column 1 and fi.rst boom 2 than said pivoting point 8 linking first trans-mission rod 7 and first boom 2.
Hence, the compensation of forces prevailing in the hoisting boom assembly in the extreme zones oE second boom 3 is based on the fact that, both in its first ex-treme position TA and in its second extreme position TB, the directions of component forces caused by hori-zontal shi~t actuator TT are nearly identical. Thus, unlike the prior art solution, wherein pivotin~ point N had the same location as pivoting point 8, the hoist-ing boom assembly operates in an identical fashion in situations according to both extreme positions TA, TB
thereof. This also contributes to the equalization of the operating speeds of a hoisting boom assembly, since in both extreme positions TA, TB, the corresponding strokes of horizontal shift actuator TT serve to pro-duce a corresponding movement of the hoisting boom as-sembly.
In the embodiment of fig. 1, one of the ends of first boom 2 is provided with a first lug 2a which is fitted with a pivo-ting point 8 for linking first transmission rod 7 and first boom 2~ Thus, as one preferred embodi-:' .
S~ , 2 2 ment, said first lug 2a is desiyned in a manner thatsaid hor.izontal shif-t actuator TT is adapted -to operate inside said firs-t luy 2a in a space between said pivot~
iny point 8 and first boom 2. In addition, a pivoting point ~ for linkiny horizontal shift actuator TT and first boom 2 is located in a second luy 2b associated with said first boom 2.
F'ig. 2 illus-trates a second embodiment for a hoisti.ny boom assembly of -the invention, wherein a horizontal shift mechanism VM for the hoistiny boom assembly com prises, -the same way as the first embodiment shown i.n fig. 1, a multi-link element 9 which is pivoted to a first transmission rod 7 by means of a link 10, to a first section I included in second boom 3 by means of a link 11, and to a second transmission rod 12 pivoted 14 to a second section II included in second boom 3 by means of a link 13. Thus, the compensating means EX
are included for equalizing the forces prevailing in horizontal shift actuator TT especially and essential-ly in second extreme operating range T~ of second boom 3. ~ence, the compensating means EX are designed by including a horizontal shift actuator TT which consists of two actuating means TT1, TT2, such as a pressure-medium operated cylinder or a like.
Said first and second actuating means TT1, TT2 of hori-zontal shift actuator TT are mounted to operate suc-cessively, in substantially diverging directions of ac-tion, essentially in the same vertical plane. Acutating means TT1, TT2 is pivotally mounted on first boom 2, on first secti.on I of second boom 3, and on horizontal shift mechanism VM. The first actuating means TT1 is linked by its first end to a pivoting point 8 connecting transmission rod 7 and first boom 2 and by its second 11 2 ~ 2J 2 end to a pivoti.ng point 16, ].ocated on a third lug 2c associated with firs-t section I of second boom 3. The second actuating means TT2 is linked by its first end to a pivoting point 17 included in third lug 2c and by its second end to a pivoting point 18 associa-ted with multi-link element S.
Thus, the second embodiment offers a solu-tion capable of equalizing the Eorces caused by the operation of a hois-ting boom assembly, especia:Lly in association with second extreme position TB, on two separate actuating means TT1, TT~ included in h.orizontal shift actuator TT.
However, this type of solution does not o~fer the same benefits as the first emhodiment, since the force ef-fect of power transmisslon unit TT is clearly more ad-vantageous in first extreme position TA than in second extreme position TB. Thusl it is natural that neither can the corresponding advantages gained in terms of the controllability of a hoisting boom assembly as readily as in the first embodiment.
Fig. 3 illustrates a hoisting boom assembly according to the first embodiment mounted on the rear section of a tractor TR, said assembly being shown in one of its operating positions TA and in its transporting position XA.
It is obvious that the invention is not limi.ted to the above embodiments but it can be modified to a great deal within the basic concept because of an extensive overall construction covered by a hoisting boom assembly.
~ , . .
.
Claims (8)
1. A hoisting boom assembly having its frame (R) and actuators (KT, ET, TT) intended to be coupled with a mobile working machine (TR), said hoisting boom assem-bly comprising:
- an upright column (1) or a like associated with frame (R) and adapted at. least partially pivotable around a vertical axis by means of a rotary actu-ator (KT), - a second boom (3) having its first section (I) journalled (4) to be pivotable in vertical plane and having its second section (II) journalled (5) to said first section (I) to be also pivotable in vertical plane, - a horizontal shift mechanism (VM) as well as a horizontal shift actuator (TT) for carrying in hori-zontal direction a free end (6) included in second boom 13), said horizontal shift mechanism (VM) be-ing adapted to act between a first boom (2) and said sections (I, II) of second boom (3) in a man-ner that the operation of said horizontal shift mechanism (VM) is possible between sections (I, II) of second boom (3) independently from the position of first boom (2), - a first boom (2) fitted between upright column (1) or a like and second boom (3) and pivotally (EN) mounted by its first end to said upright column or a like, preferably to the top section thereof, and pivotally (4, 8) mounted by its second end to sec-ond boom (3), and - an actuator (ET) fitted between upright column (1) or a like and first boom (2) for pivoting said first boom (2) in vertical plane relative to up-right column (1) or a like, whereby, when manipulating a hoisting boom assembly, the operating range of second boom (3) is defined in a man-ner that in a firs-t extreme position (TA) of said sec-ond boom 13) -the longitudinal direction (S2) of its second section (II) is substantially parallel to -the longitudinal direction (S1) of its first section (I), said second section (II) serving as an extension or a jib for first section (I) and, in a second extreme posi-tion (TB) of second boom (II), the longitudinal direc-tion of its second section (II) is substantially oppo-site to -the longitudinal direction (S1) of first sec-tion (I), said second section (II) being thus associated with first section (I), essentially tangential to said first section (I), c h a r a c t e r i z e d in that, in order to improve the operation of a hoisting boom assembly, said hoisting boom assembly comprises compen-sating means (EX) for equalizing the forces created by the operation of a hoisting boom assembly at least with-in the operating range of second boom (3) in situations substantially following and preceding said first (TA) and/or second (TB) extreme position, whereby said first section (I) and second section (II) are pivoting away from or towards each other.
- an upright column (1) or a like associated with frame (R) and adapted at. least partially pivotable around a vertical axis by means of a rotary actu-ator (KT), - a second boom (3) having its first section (I) journalled (4) to be pivotable in vertical plane and having its second section (II) journalled (5) to said first section (I) to be also pivotable in vertical plane, - a horizontal shift mechanism (VM) as well as a horizontal shift actuator (TT) for carrying in hori-zontal direction a free end (6) included in second boom 13), said horizontal shift mechanism (VM) be-ing adapted to act between a first boom (2) and said sections (I, II) of second boom (3) in a man-ner that the operation of said horizontal shift mechanism (VM) is possible between sections (I, II) of second boom (3) independently from the position of first boom (2), - a first boom (2) fitted between upright column (1) or a like and second boom (3) and pivotally (EN) mounted by its first end to said upright column or a like, preferably to the top section thereof, and pivotally (4, 8) mounted by its second end to sec-ond boom (3), and - an actuator (ET) fitted between upright column (1) or a like and first boom (2) for pivoting said first boom (2) in vertical plane relative to up-right column (1) or a like, whereby, when manipulating a hoisting boom assembly, the operating range of second boom (3) is defined in a man-ner that in a firs-t extreme position (TA) of said sec-ond boom 13) -the longitudinal direction (S2) of its second section (II) is substantially parallel to -the longitudinal direction (S1) of its first section (I), said second section (II) serving as an extension or a jib for first section (I) and, in a second extreme posi-tion (TB) of second boom (II), the longitudinal direc-tion of its second section (II) is substantially oppo-site to -the longitudinal direction (S1) of first sec-tion (I), said second section (II) being thus associated with first section (I), essentially tangential to said first section (I), c h a r a c t e r i z e d in that, in order to improve the operation of a hoisting boom assembly, said hoisting boom assembly comprises compen-sating means (EX) for equalizing the forces created by the operation of a hoisting boom assembly at least with-in the operating range of second boom (3) in situations substantially following and preceding said first (TA) and/or second (TB) extreme position, whereby said first section (I) and second section (II) are pivoting away from or towards each other.
2. A hoisting boom assembly as set forth in claim 1, whereby one of the ends of said first boom (2) is pivot-ally (8) fitted with at least a first transmission rod (7) included in horizontal shift mechanism (VM), c h a r -a c t e r i z e d in that said compensating means (EX) are included for equalizing the forces prevailing in a hoisting boom assembly, particularly in situations fol-lowing and preceding the substantially first (TA) and second (TB) extreme position of second boom (3), said compensating means (EX) being formed by combining a horizontal shift actuator (TT), included in horizontal shift mechanism (VM) and associated with first section (I) of second boom (3), and said firs-t boom 12) to-gether at a pivoting point (N) essentially spaced from said pivoting point (8) linking first -transmission rod (7) and first boom (2) together.
3. A hoisting boom assembly as set forth in claim 1, c h a r a c t e r i z e d in that said pivoting point (N) linking horizontal shift actuator (TT) and first boom (2) is located at a substantially smaller dis-tance from a pivoting point (EN) linking upright column (1) or a like and first boom (2) than said pivoting point (8) linking said first transmission rod (7) and first boom (2).
4. A hoisting boom assembly as set forth in claim 3, whereby one of the ends of first boom (2) is provided with a first lug (2a) or a like which is fitted with a pivoting point (8) linking said first transmission rod (7) and first boom (2) together, c h a r a c t e r -i z e d in that said first lug (2a) or a like designed in a manner that said horizontal shift actuator (TT) is adapted to operate in a space inside said first lug (2a) between said pivoting point (83 and first boom (2), whereby a pivoting point (N) linking said horizontal shift actuator (TT) and first boom (2) is preferably arranged in association with the top surface of first boom (2).
5. A hoisting boom assembly as set forth in claim 4, c h a r a c t e r i z e d in that said first boom (2) is provided with a second lug (2b) which is fitted with a pivoting point (N) linking said horizontal shift actuator (TT) and first boom (2).
6. A hoisting boom assembly as set forth in claim 1, said horizontal shift mechanism (VM) comprising a multi-link element (9) which is pivotally mounted on said first transmission rod (7) by means of a link (10), on first section (I) of second boom (3) by means of a link 111), and on a second transmission rod (12) journalled (14) to second section (II) of second boom (3) by means of a link (13), c h a r a c t e r i z e d in that com-pensating means (EX) are included for equalizing the forces prevailing in horizontal shift actuator (TT), particularly essentially in situations following and preceding said second extreme position (TB) of second boom (3), said compensating means (EX) being obtained by designing said horizontal shift actuator (TT) to in-clude at least two actuating means (TT1, TT2), such as a pressure-medium operated cylinder or a like, which are in at least a power transmitting communication with first boom (2) and second boom (3) and/or horizontal shift mechanism (VM).
7. A hoisting boom assembly as set forth in claim 6, c h a r a c t e r i z e d in that said first and second actuating means (TT1, TT2) included in horizontal shift actuator (TT) are adapted to operate successively in substantially diverging directions of action and sub-stantially in the same vertical plane, and that they are mounted pivotally on first boom (2), on first section (I) of second boom (3), and on horizontal shift mecha-nism (VM)
8. A hoisting boom assembly as set forth in claim 7, whereby said first actuating means (TT1) of horizontal shift actuator (TT) is journalled by its first end to a pivoting point (8) linking transmission rod (7) and first boom (2) and by its second end to a pivoting point (16) associated with first section (I) of second boom (3) and included in a third lug (2c), c h a r a c -t e r i z e d in that said second actuating means (TT2) is journalled by its first end to a pivoting point (17) included in said third lug (2c) or arranged in a like manner, and by its second end to a pivoting point (17) included in or associated with said multi-link element (9).
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002045822A CA2045822A1 (en) | 1991-06-27 | 1991-06-27 | Hoisting boom assembly |
| US08/170,324 US5507107A (en) | 1991-06-27 | 1992-06-22 | Hoisting boom assembly |
| PCT/FI1992/000194 WO1993000286A1 (en) | 1991-06-27 | 1992-06-22 | Improvement for a hoisting boom assembly |
| AU18924/92A AU1892492A (en) | 1991-06-27 | 1992-06-22 | Improvement for a hoisting boom assembly |
| FI935507A FI102958B1 (en) | 1991-06-27 | 1993-12-09 | Improvement in a lift bar mechanism |
| NO934640A NO302613B1 (en) | 1991-06-27 | 1993-12-16 | Device by lifting crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002045822A CA2045822A1 (en) | 1991-06-27 | 1991-06-27 | Hoisting boom assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2045822A1 true CA2045822A1 (en) | 1992-12-28 |
Family
ID=4147919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002045822A Abandoned CA2045822A1 (en) | 1991-06-27 | 1991-06-27 | Hoisting boom assembly |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5507107A (en) |
| AU (1) | AU1892492A (en) |
| CA (1) | CA2045822A1 (en) |
| FI (1) | FI102958B1 (en) |
| NO (1) | NO302613B1 (en) |
| WO (1) | WO1993000286A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995012039A1 (en) * | 1993-10-27 | 1995-05-04 | Komatsu Ltd. | Working machine of a hydraulic backhoe |
| US6193087B1 (en) * | 1996-09-23 | 2001-02-27 | Motrac Ab | Two arms system |
| SE521258C2 (en) * | 1997-03-03 | 2003-10-14 | Motrac Ab | Two-arm system |
| FI981166A (en) * | 1998-05-26 | 1999-11-27 | Tamrock Oy | Boom arrangement for a rock drilling device |
| US6003252A (en) * | 1998-08-05 | 1999-12-21 | Davis; Daniel E. | Conversion apparatus and method for use with excavator and crane devices |
| US20040215235A1 (en) * | 1999-11-16 | 2004-10-28 | Barrx, Inc. | Methods and systems for determining physiologic characteristics for treatment of the esophagus |
| US20060095032A1 (en) | 1999-11-16 | 2006-05-04 | Jerome Jackson | Methods and systems for determining physiologic characteristics for treatment of the esophagus |
| AT410786B (en) * | 2000-07-11 | 2003-07-25 | Erlinger Josef | Truck-mounted crane |
| EP1172323A1 (en) * | 2000-07-11 | 2002-01-16 | Jean-Marc Yerly | Articulated jib crane |
| SE533669C2 (en) * | 2004-11-23 | 2010-11-30 | Motrac Ab | Crane arrangements |
| FI20055089A (en) * | 2005-02-23 | 2006-08-24 | Ponsse Oyj | Motion Crane |
| US7357263B2 (en) * | 2006-03-22 | 2008-04-15 | Altec Industries, Inc. | Articulating jib |
| US7739813B2 (en) * | 2006-04-17 | 2010-06-22 | Eric Beaton | Telescoping boom for excavating apparatus |
| AT505729B1 (en) * | 2007-09-11 | 2010-10-15 | Ehrenleitner Franz | COLLAPSE BOOM |
| US20090279987A1 (en) * | 2008-05-07 | 2009-11-12 | Jantzen Leon K | Pipe handling unit |
| CN102020209A (en) * | 2010-12-31 | 2011-04-20 | 徐州重型机械有限公司 | Crane and sub-arm mechanism thereof |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2239024A (en) * | 1939-05-26 | 1941-04-22 | Edward J Vance | Posthole digger |
| DE1260734B (en) * | 1965-08-06 | 1968-02-08 | Forslund & Co Fabriks Ab | Mobile crane |
| SE318382B (en) * | 1965-09-20 | 1969-12-08 | Hydrauliska Ind Ab | |
| US3756330A (en) * | 1971-08-27 | 1973-09-04 | W Russell | Operator safety oriented earth auger |
| US3828939A (en) * | 1973-06-06 | 1974-08-13 | J Tranchero | Three-stage self-propelled crane |
| SE383991B (en) * | 1974-09-13 | 1976-04-12 | Motrac Gunnarson & Larsson Hb | TOOL ARM |
| US4207950A (en) * | 1978-04-27 | 1980-06-17 | Kinzenbaw Jon E | Agricultural row marker |
| DE2851942C2 (en) * | 1978-12-01 | 1983-08-18 | Friedrich Wilh. Schwing Gmbh, 4690 Herne | Excavator |
| GB2169334B (en) * | 1984-11-08 | 1988-01-20 | Ming Luen Lam | A drilling and/or lifting machine |
| US4953638A (en) * | 1988-06-27 | 1990-09-04 | The Charles Machine Works, Inc. | Method of and apparatus for drilling a horizontal controlled borehole in the earth |
| US5016767A (en) * | 1989-03-10 | 1991-05-21 | Posi-Plus Technologies Inc. | Boom articulation mechanism with, simultaneously operable, cylinders |
| FI85614C (en) * | 1989-04-05 | 1992-05-11 | Tampella Oy Ab | BERGBORRNINGSANORDNING. |
| SE463668B (en) * | 1989-05-16 | 1991-01-07 | Motrac Gunnarson & Larsson Hb | CRANE |
| DE3927268C1 (en) * | 1989-08-18 | 1991-02-14 | Ernst Dipl.-Ing. 5983 Balve De Korthaus | |
| US5090486A (en) * | 1990-05-31 | 1992-02-25 | Jones Clyde S | Multi-purpose earth drill |
| US5033554A (en) * | 1990-08-06 | 1991-07-23 | Joseph Younes | Well point placement and removal apparatus |
| US5213169A (en) * | 1991-02-15 | 1993-05-25 | Heller Marion E | Exploration-sampling drilling system |
| US5213449C1 (en) * | 1991-07-08 | 2001-07-03 | T Richard Morris | Apparatus for inserting wick drains into the earth |
| US5226488A (en) * | 1991-07-10 | 1993-07-13 | Bor-Mor Inc. | Truck mounted boring system |
-
1991
- 1991-06-27 CA CA002045822A patent/CA2045822A1/en not_active Abandoned
-
1992
- 1992-06-22 US US08/170,324 patent/US5507107A/en not_active Expired - Lifetime
- 1992-06-22 AU AU18924/92A patent/AU1892492A/en not_active Abandoned
- 1992-06-22 WO PCT/FI1992/000194 patent/WO1993000286A1/en active IP Right Grant
-
1993
- 1993-12-09 FI FI935507A patent/FI102958B1/en not_active IP Right Cessation
- 1993-12-16 NO NO934640A patent/NO302613B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO934640D0 (en) | 1993-12-16 |
| WO1993000286A1 (en) | 1993-01-07 |
| AU1892492A (en) | 1993-01-25 |
| FI935507A (en) | 1993-12-09 |
| NO302613B1 (en) | 1998-03-30 |
| NO934640L (en) | 1993-12-16 |
| US5507107A (en) | 1996-04-16 |
| FI935507A0 (en) | 1993-12-09 |
| FI102958B (en) | 1999-03-31 |
| FI102958B1 (en) | 1999-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |