US20040232651A1 - Pivoting fifth wheel hitch trailer pin assembly - Google Patents
Pivoting fifth wheel hitch trailer pin assembly Download PDFInfo
- Publication number
- US20040232651A1 US20040232651A1 US10/604,413 US60441303A US2004232651A1 US 20040232651 A1 US20040232651 A1 US 20040232651A1 US 60441303 A US60441303 A US 60441303A US 2004232651 A1 US2004232651 A1 US 2004232651A1
- Authority
- US
- United States
- Prior art keywords
- collar
- trailer
- assembly
- pin
- sleeve
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D53/00—Tractor-trailer combinations; Road trains
- B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
- B62D53/08—Fifth wheel traction couplings
- B62D53/0842—King pins
Definitions
- the invention pertains to trailer hitches and more particularly to fifth wheel trailer hitches. More specifically, the invention relates to trailer pin assembly portion of a fifth wheel hitching system.
- a fifth wheel trailer hitch system consists of a fifth wheel locking assembly which is mounted on the truck and a fifth wheel trailer pin assembly which is mounted on the trailer.
- Conventional fifth wheel trailer pin assemblies consist of a kingpin and skid plate, which are attached to the trailer. When the kingpin enters a jawslot in a fifth wheel locking assembly the locking assembly firmly closes on the kingpin, thus mating the trailer pin assembly and the locking assembly into the complete fifth wheel trailer hitch system.
- a problem suffered by conventional fifth wheel hitching systems is that there is no horizontal flex for accommodating siderocking movement about the axis which generally extends from the front of the towing vehicle to the rear of the trailer. Therefore it can be very difficult to couple, or uncouple, the towing vehicle and the trailer when they are at differing cants due to uneven ground. Further, undesirable forces can be transferred from the truck to the hitching system and to the trailer (and vice versa), thus increasing wear and tear on all components and increasing the likelihood of a component failure.
- the pivoting joint allows for the kingpin of an uncoupled trailed to be easily alined with the slot in the fifth wheel locking assembly and the pivoting joint reduces the transmission of lateral forces and stress between units coupled by the hitching assembly.
- the pivoting fifth wheel hitch trailer pin assembly provides a mechanically simple solution to the lack of horizontal flex problem.
- the simplicity of the pivoting fifth wheel hitch trailer pin assembly reduces the cost of production and reduces the number of parts which may be susceptible to structural failure.
- pivoting fifth wheel hitch trailer pin assembly when the towing unit and the trailer unit are not connected the pivoting joint in the pivoting fifth wheel hitch trailer pin assembly allows the kingpin to be easily aligned with the slot in the fifth wheel locking assembly, even when not on level ground.
- each unit is able to orientate itself with the ground without being adversely affected by the orientation of the unit to which it is coupled to.
- FIG. 1 shows a side view of the apparatus
- FIG. 2 shows a 50% cross sectional side view of the apparatus revealing a more detailed viewing of the pivot joint
- FIG. 3 shows a front view of the apparatus.
- the apparatus consists of a standard collar ( 1 ) which may be attached to a trailer by a variety of existing means, a pivoting joint ( 2 ) which is the novel feature of the apparatus and provides for the horizontal flex in the trailer pin assembly, a conventional skid plate ( 3 ), and a conventional king pin ( 4 ) which is to be inserted into the locking jaws of a fifth wheel locking assembly.
- the pivot joint consists of a cylindrical sleeve ( 5 ) which passes horizontally along the fore and aft axis through the collar ( 1 ), a bracket assembly ( 6 ) which is attached to the skid plate ( 3 ), a roller pin ( 7 ) which is inserted into the sleeve ( 5 ) and through both arms of the bracket assembly ( 6 ) and is secured in each arm of the bracket assembly by two bushing caps ( 8 ).
- a grease nipple ( 9 ) is provided to allow for lubrication to be inserted through a drilled passageway into the space between the sleeve ( 5 ) and the roller pin ( 7 ) which allows for the roller pin ( 7 ) to rotate within the sleeve ( 5 ), providing horizontal flex in the fifth wheel hitching system to accommodate siderocking movements and reducing the transfer of horizontal twisting forces.
Abstract
6A fifth wheel trailer pin assembly characterized by having a horizontally pivoting joint to reduce the transmission of lateral flex and stress between the units coupled by the hitching assembly. The trailer pin assembly is designed to be used with conventional fifth wheel locking assemblies, which are designed to allow for horizontal rotation of the trailer pin within the locking assembly and far longitudinal pivoting between the units coupled by the hitching assembly, to provide a fifth wheel hitching system which minimizes the transmission of unwanted forces and stresses between the units that are coupled together.
Description
- This application claims the priority benefit of Canadian Patent Application No. 2,392,663 filed on Jul. 12, 2002 and entitled Pivoting Fifth Wheel Hitch Trailer Pin Assembly.
- The invention pertains to trailer hitches and more particularly to fifth wheel trailer hitches. More specifically, the invention relates to trailer pin assembly portion of a fifth wheel hitching system.
- Fifth wheel trailer hitches have long been used to connect the tractors of semitruck combinations, or smaller trucks, to a trailer. Commonly a fifth wheel trailer hitch system consists of a fifth wheel locking assembly which is mounted on the truck and a fifth wheel trailer pin assembly which is mounted on the trailer.
- Conventional fifth wheel trailer pin assemblies consist of a kingpin and skid plate, which are attached to the trailer. When the kingpin enters a jawslot in a fifth wheel locking assembly the locking assembly firmly closes on the kingpin, thus mating the trailer pin assembly and the locking assembly into the complete fifth wheel trailer hitch system.
- A problem suffered by conventional fifth wheel hitching systems is that there is no horizontal flex for accommodating siderocking movement about the axis which generally extends from the front of the towing vehicle to the rear of the trailer. Therefore it can be very difficult to couple, or uncouple, the towing vehicle and the trailer when they are at differing cants due to uneven ground. Further, undesirable forces can be transferred from the truck to the hitching system and to the trailer (and vice versa), thus increasing wear and tear on all components and increasing the likelihood of a component failure.
- Previous inventors have addressed the lack of horizontal flex in conventional fifth wheel hitching assemblies by devising a fifth wheel locking assembly which is capable of pivoting horizontally as well as vertically. The difficulty with this type of solution is that the locking assembly is the most complex part of the hitching assemble and therefore required a complex invention to add the capability of horizontal flex to the locking assembly.
- Pivoting fifth wheel hitch trailer pin assembly invention for which this patent application is for, solves the conventional fifth wheel hitching assembly”s lack of horizontal flex by having a horizontally pivoting joint in the fifth wheel trailer pin assembly. The pivoting joint allows for the kingpin of an uncoupled trailed to be easily alined with the slot in the fifth wheel locking assembly and the pivoting joint reduces the transmission of lateral forces and stress between units coupled by the hitching assembly.
- The pivoting fifth wheel hitch trailer pin assembly provides a mechanically simple solution to the lack of horizontal flex problem. The simplicity of the pivoting fifth wheel hitch trailer pin assembly reduces the cost of production and reduces the number of parts which may be susceptible to structural failure.
- With the pivoting fifth wheel hitch trailer pin assembly when the towing unit and the trailer unit are not connected the pivoting joint in the pivoting fifth wheel hitch trailer pin assembly allows the kingpin to be easily aligned with the slot in the fifth wheel locking assembly, even when not on level ground. When a towing unit and a trailer unit are connected with the pivoting fifth wheel hitch trailer pin assembly, each unit is able to orientate itself with the ground without being adversely affected by the orientation of the unit to which it is coupled to.
- FIG. 1 shows a side view of the apparatus,
- FIG. 2 shows a 50% cross sectional side view of the apparatus revealing a more detailed viewing of the pivot joint, and
- FIG. 3 shows a front view of the apparatus.
- With reference to FIG. 1, the apparatus consists of a standard collar ( 1) which may be attached to a trailer by a variety of existing means, a pivoting joint (2) which is the novel feature of the apparatus and provides for the horizontal flex in the trailer pin assembly, a conventional skid plate (3), and a conventional king pin (4) which is to be inserted into the locking jaws of a fifth wheel locking assembly.
- As more clearly shown in FIG. 3, the pivot joint consists of a cylindrical sleeve ( 5) which passes horizontally along the fore and aft axis through the collar (1), a bracket assembly (6) which is attached to the skid plate (3), a roller pin (7) which is inserted into the sleeve (5) and through both arms of the bracket assembly (6) and is secured in each arm of the bracket assembly by two bushing caps (8). In this shown embodiment a grease nipple (9) is provided to allow for lubrication to be inserted through a drilled passageway into the space between the sleeve (5) and the roller pin (7) which allows for the roller pin (7) to rotate within the sleeve (5), providing horizontal flex in the fifth wheel hitching system to accommodate siderocking movements and reducing the transfer of horizontal twisting forces.
- Although the invention is described in terms of the illustrated embodiment, various changes and modifications may be made to the illustrated embodiment without departing from the spirit or scope of the invention.
Claims (5)
1. A fifth wheel hitch trailer pin assembly, for connecting a trailer to a towing vehicle equipped with a fifth wheel locking assembly, comprising:
(a) a collar attached to the trailer;
(b) means for pivotally attaching the collar to the bracket assembly, about a substantially longitudinal axis that extends from the front of the towing vehicle to the rear of the trailer;
(c) a skid plate connected to the bottom of the bracket assembly; and
(d) a king pin connected to the bottom of the skid plate.
2. A fifth wheel hitch trailer pin assembly of claim 1 in which the means for pivotally attaching the bottom of the collar to the top of a bracket assembly consists of a pivot joint comprising:
(a) a sleeve situated through the collar;
(b) a bracket assembly with plates positioned on both the front side and rear side of the collar about the axis that extends from the front of the towing vehicle to the rear of the trailer;
(c) a roller pin situated inside and able to rotate within the sleeve, which extends past both the collar and the front side and rear side of the bracket assembly, which allows the collar to rotate with respect to the kingpin; and
(d) bushing caps on both terminal ends of the roller pin.
3. A fifth wheel hitch trailer pin assembly of claim 2 in which the collar has a grease nipple connected to a passageway into said sleeve, allowing lubricant to be inserted in the space between the sleeve and the roller pin.
4. A pivot joint for a fifth wheel hitch trailer pin assembly having a collar, skid plate and king pin comprising:
(a) a cylindrical sleeve situated through the collar oriented substantially horizontally and aligned with an axis that extends from the front of the trailer to the rear of the tractor;
(b) a bracket assembly with plates positioned on both the front side and rear side of the collar about the axis that extends from the front of the towing vehicle to the rear of the trailer;
(c) a roller pin situated inside and able to rotate within the sleeve, which extends past both the collar and the front side and rear side of the bracket assembly, which allows the collar to rotate with respect to the kingpin; and
(d) bushing caps on both terminal ends of the roller pin.
5. A fifth wheel hitch trailer pin assembly of claim 4 in which the collar has a grease nipple connected to a passageway into said sleeve, allowing lubricant to be inserted in the space between the sleeve and the roller pin.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CA2004/001044 WO2005008816A2 (en) | 2003-07-18 | 2004-07-15 | Electrically conductive fuel cell contact material |
| EP04737975.5A EP1647068B1 (en) | 2003-07-18 | 2004-07-15 | Electrically conductive fuel cell contact material |
| JP2006520636A JP4949834B2 (en) | 2003-07-18 | 2004-07-15 | Fuel cell stack |
| CA2530205A CA2530205C (en) | 2003-07-18 | 2004-07-15 | Electrically conductive fuel cell contact material |
| JP2011171660A JP5469135B2 (en) | 2003-07-18 | 2011-08-05 | Fuel cell stack |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2,392,663 | 2002-07-12 | ||
| CA002392663A CA2392663A1 (en) | 2002-07-12 | 2002-07-12 | Pivoting fifth wheel hitch trailer pin assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20040232651A1 true US20040232651A1 (en) | 2004-11-25 |
Family
ID=30005536
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/604,348 Expired - Fee Related US6877757B2 (en) | 1997-04-15 | 2003-07-14 | Pivoting fifth wheel hitch trailer pin assembly |
| US10/604,413 Abandoned US20040232651A1 (en) | 2002-07-12 | 2003-07-18 | Pivoting fifth wheel hitch trailer pin assembly |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/604,348 Expired - Fee Related US6877757B2 (en) | 1997-04-15 | 2003-07-14 | Pivoting fifth wheel hitch trailer pin assembly |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US6877757B2 (en) |
| AU (1) | AU2003249801A1 (en) |
| CA (1) | CA2392663A1 (en) |
| WO (1) | WO2004007265A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7549666B1 (en) * | 2005-07-28 | 2009-06-23 | Donald Peter Sahlem | Articulating hitch for fifth wheel trailers |
| US7934897B1 (en) | 2005-08-22 | 2011-05-03 | Blackwelder Paul E | Truck apparatus coupleable to different body types and methods of interchanging the bodies |
| US7712761B2 (en) * | 2006-06-13 | 2010-05-11 | Cequent Performance Products, Inc. | Extension coupling for interconnecting trailer and tow hitch |
| US7530591B2 (en) * | 2006-06-13 | 2009-05-12 | Cequent Performance Products, Inc. | Pin box assembly for trailer |
| US7988178B2 (en) * | 2007-10-17 | 2011-08-02 | Troy Shockley | Anti-binding motorcycle trailer hitch assembly |
| US7766361B2 (en) * | 2007-10-25 | 2010-08-03 | Saf-Holland, Inc. | Rotating fifth wheel hitch kingpin assembly |
| EP2571855B1 (en) | 2010-05-17 | 2014-12-24 | Merck Sharp & Dohme Corp. | Novel prolylcarboxypeptidase inhibitors |
| US8641074B2 (en) * | 2011-09-21 | 2014-02-04 | Kann Manufacturing Corporation | Oscillating kingpin structure for grain trailer |
| US8960704B2 (en) | 2013-05-14 | 2015-02-24 | Saf-Holland, Inc. | Fifth wheel hitch kingpin assembly |
| US9016708B2 (en) | 2013-05-14 | 2015-04-28 | Saf-Holland, Inc. | Fifth wheel hitch kingpin assembly |
| USD794515S1 (en) * | 2016-02-11 | 2017-08-15 | Scott McCuskey | Drop down trailer hitch |
| WO2019142137A2 (en) | 2018-01-19 | 2019-07-25 | Saf-Holland, Inc. | Kingpin assembly with rotation sensor arrangement |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421778A (en) * | 1966-11-18 | 1969-01-14 | Utility Trailer Mfg Co | Dual purpose dolly for semitrailers |
| US3843161A (en) * | 1972-12-04 | 1974-10-22 | J Hastings | Trailer coupler assembly |
| US3897086A (en) * | 1973-09-10 | 1975-07-29 | Midway Ind Inc | Pin box |
| US3899194A (en) * | 1974-03-28 | 1975-08-12 | Midway Ind Inc | Adjustable list pin box |
| US4136382A (en) * | 1978-01-18 | 1979-01-23 | Exxon Research & Engineering Co. | Converter system |
| US4276202A (en) * | 1978-08-25 | 1981-06-30 | Dornier System Gmbh | Process for the manufacture of electrodes having perovskite structure for electrochemical high temperature cells |
| US4546301A (en) * | 1983-03-04 | 1985-10-08 | Maschinenfabrik Stahlkontor Weserlenze GmbH & Co. | Circuit and method for controlling an alternating or three-phase current motor |
| US4574341A (en) * | 1982-12-17 | 1986-03-04 | Danfoss A/S | Current supply apparatus for an A.C. consumer |
| US4955631A (en) * | 1989-04-17 | 1990-09-11 | Meyer Willard W | Fifth wheel coupling for allowing and controlling side to side sway |
| US5136216A (en) * | 1991-02-15 | 1992-08-04 | York International Corporation | Ac motor drive system |
| US5146147A (en) * | 1991-02-28 | 1992-09-08 | York International Corporation | Ac motor drive system |
| US5218283A (en) * | 1991-02-15 | 1993-06-08 | York International Corporation | AC motor drive system with a two phase power supply |
| US5315497A (en) * | 1991-11-07 | 1994-05-24 | Premier Power, Inc. | Symmetrical universal AC-AC power conditioner |
| US5339348A (en) * | 1992-11-02 | 1994-08-16 | General Electric Company | X-ray tube rotor controller using the main high voltage inverters for acceleration |
| US5406185A (en) * | 1993-06-04 | 1995-04-11 | Strunk; Timothy L. | Two-phase inverter drive for a three-phase motor |
| US5638266A (en) * | 1994-03-10 | 1997-06-10 | Hitachi, Ltd. | Free wheel diode arrangement for neutral point clamped electric power conversion apparatus |
| US5933344A (en) * | 1995-03-20 | 1999-08-03 | Hitachi, Ltd. | Microprocessor having timer circuit generating complementary non-overlapped PWM signals |
| US6228522B1 (en) * | 1998-07-24 | 2001-05-08 | Sulzer Hexis Ag | Perowskite for a coating of interconnectors |
| US6692013B1 (en) * | 2002-06-03 | 2004-02-17 | Dana Corporation | Fifth wheel suspension |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2925286A (en) * | 1957-05-03 | 1960-02-16 | Locomotion Engineering Inc | Fifth-wheel coupler for truck-trailer combination |
| US2857174A (en) * | 1957-06-25 | 1958-10-21 | Pacific Car & Foundry Co | Fifth-wheel assembly |
| US3893712A (en) * | 1974-05-28 | 1975-07-08 | Eugene A Sallier | Hitch for fifth wheel travel trailer |
| US4183548A (en) * | 1978-09-21 | 1980-01-15 | Schneckloth Raymond C | Trailer hitch with an interchangeable rotative portion |
| US4418934A (en) * | 1982-04-06 | 1983-12-06 | W. F. Mickey Body Company, Inc. | Pivotal bolster plate |
| US4921266A (en) * | 1989-02-06 | 1990-05-01 | Ralph Beals | Fifth wheel hammer ball for gooseneck trailers |
| US5000472A (en) * | 1989-12-18 | 1991-03-19 | Vick Jr Henry L | Kingpin assembly |
| US5011178A (en) * | 1990-02-26 | 1991-04-30 | Sanderson Stanley W | Trailer hitch apparatus |
| US5058915A (en) * | 1990-09-07 | 1991-10-22 | Burns Darrel J | Trailer hitch |
| US5356167A (en) * | 1993-07-20 | 1994-10-18 | Hall Arthur E | Trailer hitch with multi-directional pivot |
| US5529329A (en) * | 1994-11-28 | 1996-06-25 | Reese Products, Inc. | Fifth wheel hitch with side pivot lock |
| US5947503A (en) * | 1996-07-15 | 1999-09-07 | Tompkins; Ted L. | Fifth-wheel trailer connector |
| US5839745A (en) * | 1996-07-31 | 1998-11-24 | Cattau; Lyle L. | Lock mechanism for fifth wheel hitch |
| US6024372A (en) * | 1997-02-05 | 2000-02-15 | Colibert; Floyd A. | Fifth wheel extension adapter |
| US6170851B1 (en) | 1997-12-19 | 2001-01-09 | Reese Products, Inc. | Tilting fifth wheel trailer hitch |
| US6581951B2 (en) * | 2001-03-06 | 2003-06-24 | Dennis Lange | Motion-dampening fifth-wheel hitch |
| US6612380B2 (en) * | 2001-07-25 | 2003-09-02 | Donald D. Pyle | Tractor attachment for three point hitch |
| US6942236B2 (en) | 2001-08-24 | 2005-09-13 | Cequent Towing Products, Inc. | Fifth wheel hitch with rocker |
-
2002
- 2002-07-12 CA CA002392663A patent/CA2392663A1/en not_active Abandoned
-
2003
- 2003-07-14 AU AU2003249801A patent/AU2003249801A1/en not_active Abandoned
- 2003-07-14 US US10/604,348 patent/US6877757B2/en not_active Expired - Fee Related
- 2003-07-14 WO PCT/CA2003/001059 patent/WO2004007265A1/en not_active Application Discontinuation
- 2003-07-18 US US10/604,413 patent/US20040232651A1/en not_active Abandoned
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421778A (en) * | 1966-11-18 | 1969-01-14 | Utility Trailer Mfg Co | Dual purpose dolly for semitrailers |
| US3843161A (en) * | 1972-12-04 | 1974-10-22 | J Hastings | Trailer coupler assembly |
| US3897086A (en) * | 1973-09-10 | 1975-07-29 | Midway Ind Inc | Pin box |
| US3899194A (en) * | 1974-03-28 | 1975-08-12 | Midway Ind Inc | Adjustable list pin box |
| US4136382A (en) * | 1978-01-18 | 1979-01-23 | Exxon Research & Engineering Co. | Converter system |
| US4276202A (en) * | 1978-08-25 | 1981-06-30 | Dornier System Gmbh | Process for the manufacture of electrodes having perovskite structure for electrochemical high temperature cells |
| US4574341A (en) * | 1982-12-17 | 1986-03-04 | Danfoss A/S | Current supply apparatus for an A.C. consumer |
| US4546301A (en) * | 1983-03-04 | 1985-10-08 | Maschinenfabrik Stahlkontor Weserlenze GmbH & Co. | Circuit and method for controlling an alternating or three-phase current motor |
| US4955631A (en) * | 1989-04-17 | 1990-09-11 | Meyer Willard W | Fifth wheel coupling for allowing and controlling side to side sway |
| US5136216A (en) * | 1991-02-15 | 1992-08-04 | York International Corporation | Ac motor drive system |
| US5218283A (en) * | 1991-02-15 | 1993-06-08 | York International Corporation | AC motor drive system with a two phase power supply |
| US5146147A (en) * | 1991-02-28 | 1992-09-08 | York International Corporation | Ac motor drive system |
| US5315497A (en) * | 1991-11-07 | 1994-05-24 | Premier Power, Inc. | Symmetrical universal AC-AC power conditioner |
| US5339348A (en) * | 1992-11-02 | 1994-08-16 | General Electric Company | X-ray tube rotor controller using the main high voltage inverters for acceleration |
| US5406185A (en) * | 1993-06-04 | 1995-04-11 | Strunk; Timothy L. | Two-phase inverter drive for a three-phase motor |
| US5638266A (en) * | 1994-03-10 | 1997-06-10 | Hitachi, Ltd. | Free wheel diode arrangement for neutral point clamped electric power conversion apparatus |
| US5933344A (en) * | 1995-03-20 | 1999-08-03 | Hitachi, Ltd. | Microprocessor having timer circuit generating complementary non-overlapped PWM signals |
| US6228522B1 (en) * | 1998-07-24 | 2001-05-08 | Sulzer Hexis Ag | Perowskite for a coating of interconnectors |
| US6692013B1 (en) * | 2002-06-03 | 2004-02-17 | Dana Corporation | Fifth wheel suspension |
Also Published As
| Publication number | Publication date |
|---|---|
| US20040104556A1 (en) | 2004-06-03 |
| AU2003249801A1 (en) | 2004-02-02 |
| US6877757B2 (en) | 2005-04-12 |
| WO2004007265A1 (en) | 2004-01-22 |
| CA2392663A1 (en) | 2004-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: GLOBAL THERMOELECTRIC INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZHANG, XINGE;WOOD, ANTHONY;RIOU, MICHEL;REEL/FRAME:013895/0087 Effective date: 20030807 |
|
| AS | Assignment |
Owner name: FUELCELL ENERGY, LTD., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GLOBAL THERMOELECTRIC INC.;REEL/FRAME:014845/0104 Effective date: 20040707 |
|
| AS | Assignment |
Owner name: GLOBAL THERMOELECTRIC INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZHANG, XINGE;WOOD, ANTHONY;RIOU, MICHEL;REEL/FRAME:015484/0942;SIGNING DATES FROM 20030807 TO 20040807 |
|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |