CA1267543A - Automatic delay relocking device - Google Patents
Automatic delay relocking deviceInfo
- Publication number
- CA1267543A CA1267543A CA000506822A CA506822A CA1267543A CA 1267543 A CA1267543 A CA 1267543A CA 000506822 A CA000506822 A CA 000506822A CA 506822 A CA506822 A CA 506822A CA 1267543 A CA1267543 A CA 1267543A
- Authority
- CA
- Canada
- Prior art keywords
- linkage
- drive
- clutch
- clutch member
- lock
- 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.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B37/00—Permutation or combination locks; Puzzle locks
- E05B37/16—Permutation or combination locks; Puzzle locks with two or more push or pull knobs, slides, or the like
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B37/00—Permutation or combination locks; Puzzle locks
- E05B37/0075—Automatic scrambling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5611—For control and machine elements
- Y10T70/5757—Handle, handwheel or knob
- Y10T70/5765—Rotary or swinging
- Y10T70/577—Locked stationary
- Y10T70/5783—Combination lock
- Y10T70/5788—Push pin or button
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/70—Operating mechanism
- Y10T70/7006—Predetermined time interval controlled
- Y10T70/7011—Positively initiated delay interval
- Y10T70/7017—Interval terminating
Abstract
ABSTRACT OF THE DISCLOSURE
A permutation lock having pushbutton code controls and automatic cancelling of the code when the latch is operated for opening the door. An adjustable time-delay device is provided for disabling the operation of the lock after a predetermined time from when the code is inserted in the lock chamber. The time delay device disables,the lock after the duration of a predetermined time.
A permutation lock having pushbutton code controls and automatic cancelling of the code when the latch is operated for opening the door. An adjustable time-delay device is provided for disabling the operation of the lock after a predetermined time from when the code is inserted in the lock chamber. The time delay device disables,the lock after the duration of a predetermined time.
Description
i.267~4;~
This invention relates to a permutation lock and, more particularly, to an adjustable time delay device for preventing unlocking of the lock after a predetermined time from inserting the code in the permutation lock.
Pushbutton mechanical loeks are available in the market today. These locks, however, have a drawback in that there is no automatic relocking feature with time delay. Por example, an authorized person wishing to open the door enters the eorreet code. For some reason or other, if he has to leave without opening the door, or someone else opens the door for him on the inside of the building, the eode remains in the lock. There is no automatie feature available meehanieally to decode or relock the lock. In such eases, any unauthorized person ean open the door not knowing the secret code, by simply actuating the knob or handle.
The invention detailed below allows the opening of the loek for a seleeted period of time when the door knob is turned and the correet eode is inserted. If the lock is not opened within the duration of the selected time, the lock automatically disables the opening mechanism of the lock, eliminating the possibility of unauthorized entry.
U. S. Patent No. 3,747,377 to Van Deudekom, shows a permutation loek with a pushbutton eontrol for the loek ehamber and doorknobs on the inside and on the outside of the door to operate the lateh. A linkage eonneets the loek ehamber with a elutch of the doorknob to control the operation of the loek. This patent shows a eonventional loek in whieh there is no means for automatieally eaneelling the eode in the loek eham~er if the door were opened from the i2675~3 inside of the building when the code was inserted.
Accordingly, the applicant has provided for an adjustable time delay which will automatically disable operation of the lock if the door is not opened from the ou-tside within a predetermined time.
It is an object of this invention to provide a time-delay device on a permutation lock for disabling operation of the lock a predetermined time after entry of the code in the lock chamber, and if the lock has not been operated.
It is another object of this invention to provide a time-delay device on a permutation lock disabling operation of the lock a predetermined time after entry of the code if the lock has not been operated.
It is a further object of this invention to provide a time-delay device on a permuation lock operating a micro-switch monitoring the operation or attempted operation of the lock and providing a signal at some remote location of the attempted opening of the lock.
The objects of this invention are accomplished by a permutation combination lock with pushbutton chamber control for entering of the code. The latch operator is provided for selectively unlatching the latch when the code is entered in the lock chamber. A time delay device on the permutation lock operates in conjunction with the latch operator to disable operation of the lock after a predetermined time has lapsed subsequent to the entry of the code in the lock chamber. This prevents unauthorized entry by a person even though the code is entered in the lock chamber. In order to place the time delay device in an opening mode, which is done by rotating the latch, a linkage scrambles or cancels any code on the permutation lock chamber and thereby requires reentry of the code before opening of the lock.
~X675'~3 Referring to -the drawings;
FIG. 1 illustrates a front elevation view of the permutation lock and lock chamber;
FIG. 2 is a cross section view showing the permutation lock cham~er, latch operating means and a clutch with a linkage connected between a control shaft on the lock chamber;
FIG. 3 is a cross section view taken on line 3-3 of FIG. 2, showing the linkage connected between the control shaft on the permutation lock chamber in the neutral position, and the clutch for unlatching the latch element;
FIG. 4 is a cross section view similar to FIG. 3, showing the position for the linkage for scrambling the code in the lock chamber and resetting the time-delay device in the opening mode;
FIG. 5 is a similar view to that of FIG. 3, showing a linkage between the control shaft of the permutation lock chamber and the clutch, for driving the unlatching mechanism to the unlatching position;
FIG. 6 is a cross section view taken on the plane on the lines 6-6 in FIG. 3, showing the cam surfaces on the linkage;
FIG. 7 is a three-dimensional view of the control shaft arm on the lock chamber, showing the cam surfaces for operating the time-delay device;
FIG. 8 is a cross section view showing the linkage and clutch in the operating pos~tion, as shown in FIG. 4, for the scrambling of the code in the lock chamber and resetting of the time delay device;
FIG. 9 is a cross section v~ew with the linkage in a position similar to that as shown in FIG. 3; and FIG. 10 is an exploded view of the clutch, showing the components in the clutch.
1~6~5~
Referring to the drawings~ ~IG. 1 illustrates the permutation lock 1 on a door 2~ an outside door knob 4 and the inside doorknob 18. The latch element 44 is in the extended position for engaging a stop in the plate 22.
The pushbuttons 5 are provided for inserting the code in the lock chamber which is immediately behind the panel 6.
FIG. 2 illustrates a cross section view of the device shown in FIG. 1, with the lock chamber 7 immediately behind the pushbuttons 5 and panel 6. Rotation of the control shaft 8 is controlled by the lock chamber mechanism.
A time-delay device 9 is positioned in a cavity 10 in the door 2. The time-delay device 9 includes a plunger 11 which extends forwardly into the compartment 12 and interferes with the operation of the linkage 13. The plunger 11 is retracted by the cams 28 and 29 when the linkage is operated and progresses forwardly to an interfering position during a predetermined time interval. The microswitch 16 provides terminals for that connection to a signalling device which will indicate if there is tampering or opening of the lock.
The indicator can be positioned at a remote location to provide the owner a means of determining when there is someone attempting to operate the lock. An adjustable knob 17 controls the time interval for operation of the time delay deviee 9. For the purpose of illustration, the device may be an air control device with a diaphragm and an adjustable orifice controlled by an adjustable knob 17 to control the duration of time for the plunger to move forward to an extended interfering position.
The inner knob 18 on the inside of the door will operate the latch element 44 without use of the permutation lock 1.
'.- .
~ 267543 The outer knob 4 operates through a drive shaft 19 extending intc the clutch 20. A shaft 21 extends into the latch operating mechanism behind the plate 22.
FIG. 3 illustrates the position of the linkage and the control shaft when the latch is in the extended position and the door is latched. The housing 23 encloses the lock chamber 7 and the control shaft 8 is rotated to neutral position, as shown. The control shaft arm 24 extends to the link 25. The control shaft arm 24 also has two cam arms 26 and 27. The cam 28 on cam arm 27 resets the time-delay mechanism when the linkage is operated to scramble the code in the lock chamber 7. The plunger 11 is shown in section and extended to an interfering position with the linkage. The cam 29 operates to reset the time delay mechanism if the linkage has been rotated to its position shown in FIG. S and retained in th~s position long enough for the time dela~ mechanism to cycle to its extended position.
FIG. 6 illustrates a section view of the cams and the plunger 11;
FIG. 4 illustrates the scrambling or "cancelling"
position, and also the reset position for -the time delay mechanism. The control shaft arm 24 has been rotated in a clockwise direction, as viewed in FIG. 4 relative to the view in FIG. 3. The reset disc 30 has been rotated in a counterclock~ise direction and the linkage has changed position, as indicated. This operation scrambles the code in the lock chamber 7;
FIG. 5 illustrates the l~nkage moved to a position for retracting a latch. The linkage has shifted to the position where the clutch actuator disc arm 31 is rotated in a counter-.. . .
~-iX67S~3 clockwise direction. Thi~ carries the lin~s 32 and 33 to the position shown. The reset disc arm 3~ remains in the fixed position;
To rotate the linkage ta this position, normally the cam 29 would interfere with the plunger 11 unless the linkage is rotated in a clockwise direction first allowing the cam 28 to reset the plunger 11 and move it out of the way of the linkage. If the latch mechanism were held in this position for any length of time for the duration of the return cycle of the time delay mechanism, the cam 29 would reset the time delay mechanism when it is rotated in a clockwise direction to the normal latch extended position;
FIG. 8 illustrates the position for resetting or scrambling the code in the lock chamber, while FIG. 9 shows the clutch in the unlatching position;
FIG. 10 illustrates the components of the clutch for transmitting the unlatching force from the outer knob 4 to unlatch the latch 44;
FIG. 10 shows the reset disc 35 integral with a reset disc arm 30 connected through the pin 36 to the link 32.
The reset disc 35 is provided with the tabs 38 which drive through the slots 39 in the cammed clutch disc 40. The reset disc 35 is also provided with the tabs 41 which extend forwardly into the openings 42 on the plate 43 of the housing.
The housing also includes the housing member 14 which has an end wall 45 and the cylindrical portion 46.
The cammed clutch disc 40 is formed with protrusions 47 and 48 each having cammed surfaces 49 and 50. These cammed surfaces engage mating cam surfaces 51 and 52 on the protrusions 53 in the c].utch actuator disc 54. Nor~ally the spring 55 biases the cammed disc 40 in engagement with the clutch actuator disc 54 and the cammed surfaces provide a ~26754;~
drive between the t~o disc~. ~he spring 55 provides a force to overcome the spring 56 and provide the drive.
Spring 55 also biases the clutch actuator disc 54 forwardly, causing the surface 57 on the forward ends of the cylindrical portion of the disc to engage the reset disc 35 and bias the reset disc 35 so that the tabs 41 enter the openings 42 and lock the reset disc to the housing plate 43.
The cammed disc 40 is formed with a hub 58 which extends to an abutting engagement with,the plate 43 of the housing. The jaws 59 of the cammed disc 40 extend through an opening in the end plate 43 and rotate within the bearing 60 which is retained in the plate 43. A spindle 61 which may be keyed to the outer knob, extends centrally within the sleeve 62 which is connected to the knob 4.
Accordingly, the knob 4 operates the cammed disc 40 and drives the clutch actuator disc 54. The clutch actuator disc is also formed with a hub 63. In the forward position of the latch operating disc, the lugs 65 are held dis-engaged from the holes 66 in the rear walls 4' of the clutch housing 14.
It will be noted that the latch operating disc 54 has an elongated hub 63 which projects rearwardly therefrom to a central hole in the rear wall 45 of the clutch housing beyond the rear end of spindle 61, to rotatably receive the forward end portion of the latch actuating shaft 67. A pin 68 projects radially from the outside of the shaft and into a notch 69 to establish a driving connection between the operating disc 54 and the latch actuating shaft 67 capable of accommodating rotation of the shaft relative to the latch operating disc through an angle of 90 .
Such relative rotation is necessary at times when the spindle ~267S~
61 is drivingly connected to a key-over-ride mechanism in the outer knob 4, as for example, a pin tumbler lock which has an operating stroke of 180. In that case, the forward end of the latch actuat~ng shaft 67 is half cut away to provide a flat drive abutment 70 lying in a plane containing the shaft axis. A drive lug 71 on the rear end of the spindle 61 is then so located with respect to the abutment 70 as to enable the spindle to rotate 90 in the clockwise directian, as viewed from the knob 4, be~ore it comes into driving relation with the shaft abutment 70 and rotates the latter the next 90 relative to the latch operating disc 54. The latch operating shaft 67 is provided with a square end for operating the latch in the door.
Normally the latch is operated from the outside knob 4 which drives the cammed disc 40 and through the cam surfaces engaging the mating cam surfaces on the clutch operating disc 54. If there is no interference of the linkage 13, the drive normally retracts the latch for opening of the door. When, however, there is interference with the linkage 13, the cammed drive disc 40 rotates relative to the clutch operating disc 54 and forces the clutch operating disc 54 rearwardly. This causes the abutment 65 to extend into the opening 66 and lock the clutch operating disc 54.
With a rearward movement of the clutch operating disc 54, the spring 56 biases the reset diSc 35 forwardly until the tabs 38 engage the slots 39 in the forward end of the cammed drive disc 40. Accordingly, then the reset disc 35 is rotated to the position shown in FIG. 4, and the control shaft 8 is rotated and the chamber lock is scrambled.
33 The deuice operates in the following manner:
The outside knob 4 is rotated to retract the latch.
6~543 Rotation of the knob 4 in a clockwise direction causes the linkage 13 to operate. Since the plunger 11 of the time delay mechanism extends into the path of motion of the cams 28 and 29, it interferes with the movement of the linkage.
This, in turn, causes the cammed drive disc 40 to rotate relative to the clutch actuator disc 54 and drive the clutch actuator disc 54 rearwardly so that the lugs 65 move rearwardly into the opening 66 of end wall 45 and lock the clutch actuating disc 54 in a stationary position. The rearward movement of the clutch actuating cam 54 allows the spring 56 to bias the reset disc 35 rearwardly, unseating the tabs 41 from the openings 42 in the plate 43 of the clutch housing. This in turn, permits the reset disc 35 to be rotated by the cammed drive disc 40 and operate the linkage. The linkage operates the control shaft 8 and scrambles or cancels any code that may remain in the lock chamber. Release of the knob will allow it to rotate counterclcckwise. Counterclockwise rotation to return the knob 4 to its original retracted position is caused by the springs 80 engaging the pin 81 in the shaft 82. The shaft 82 rotates counterclockwise until the pin 81 returns to a rest position against the stop 83 which is fastened to the panel 6 of the chamber housing.
Rotation of the knob 4 and the linkage in the manner described also provides another function in that the cam 28 on the control shaft arm 24 biases the plunger 11 rearwardly moving the plunger out of the path of the linkage or cams 28 and 29. The plunger will remain in a retracted position for a predetermined duration of time.
The duration of time is adjustable by an adjustable knob on the adjustment 17.
~675f~3 When the code is -then applied to the buttons 5 on the panel 6, the knob 4 is again rotated and, because there is no interference with the movement of the linkage due to shaft 8, the knob will rotate cammed drive disc 40 which will carry the clutch operating disc 54. Movement of the clutch operating disc 54 will drive the pin 68 and shaft 67 and retract the latch.
The lock chamber, being decoded, allows shaft 8 to rotate in the opposite direction which carried the arm 31 of the latch actuating disc 54. Accordingly, the latch is retracted and the linkage swings to the position shown in Fig. 5 and, in this position, the latch is retracted and the chamber code will be cancelled when it returns to its former position, as shown in FIG. 3.
When the knob 4 is allowed to rotate counterclockwise the linkage will return to the position shown in FIG. 3 and the code will be cancelled from the permutation lock chamber.
Adjustment of the adjustor 17 will control the duration of time of the time delay device. The time may be shortened or extended, as desired. The microswitch 16 is also provided with an electrical circuit to the remote indicator which will indicate to the personnel at a remote location that an attempt has been made to open the door, or that the door has been opened.
This invention relates to a permutation lock and, more particularly, to an adjustable time delay device for preventing unlocking of the lock after a predetermined time from inserting the code in the permutation lock.
Pushbutton mechanical loeks are available in the market today. These locks, however, have a drawback in that there is no automatic relocking feature with time delay. Por example, an authorized person wishing to open the door enters the eorreet code. For some reason or other, if he has to leave without opening the door, or someone else opens the door for him on the inside of the building, the eode remains in the lock. There is no automatie feature available meehanieally to decode or relock the lock. In such eases, any unauthorized person ean open the door not knowing the secret code, by simply actuating the knob or handle.
The invention detailed below allows the opening of the loek for a seleeted period of time when the door knob is turned and the correet eode is inserted. If the lock is not opened within the duration of the selected time, the lock automatically disables the opening mechanism of the lock, eliminating the possibility of unauthorized entry.
U. S. Patent No. 3,747,377 to Van Deudekom, shows a permutation loek with a pushbutton eontrol for the loek ehamber and doorknobs on the inside and on the outside of the door to operate the lateh. A linkage eonneets the loek ehamber with a elutch of the doorknob to control the operation of the loek. This patent shows a eonventional loek in whieh there is no means for automatieally eaneelling the eode in the loek eham~er if the door were opened from the i2675~3 inside of the building when the code was inserted.
Accordingly, the applicant has provided for an adjustable time delay which will automatically disable operation of the lock if the door is not opened from the ou-tside within a predetermined time.
It is an object of this invention to provide a time-delay device on a permutation lock for disabling operation of the lock a predetermined time after entry of the code in the lock chamber, and if the lock has not been operated.
It is another object of this invention to provide a time-delay device on a permutation lock disabling operation of the lock a predetermined time after entry of the code if the lock has not been operated.
It is a further object of this invention to provide a time-delay device on a permuation lock operating a micro-switch monitoring the operation or attempted operation of the lock and providing a signal at some remote location of the attempted opening of the lock.
The objects of this invention are accomplished by a permutation combination lock with pushbutton chamber control for entering of the code. The latch operator is provided for selectively unlatching the latch when the code is entered in the lock chamber. A time delay device on the permutation lock operates in conjunction with the latch operator to disable operation of the lock after a predetermined time has lapsed subsequent to the entry of the code in the lock chamber. This prevents unauthorized entry by a person even though the code is entered in the lock chamber. In order to place the time delay device in an opening mode, which is done by rotating the latch, a linkage scrambles or cancels any code on the permutation lock chamber and thereby requires reentry of the code before opening of the lock.
~X675'~3 Referring to -the drawings;
FIG. 1 illustrates a front elevation view of the permutation lock and lock chamber;
FIG. 2 is a cross section view showing the permutation lock cham~er, latch operating means and a clutch with a linkage connected between a control shaft on the lock chamber;
FIG. 3 is a cross section view taken on line 3-3 of FIG. 2, showing the linkage connected between the control shaft on the permutation lock chamber in the neutral position, and the clutch for unlatching the latch element;
FIG. 4 is a cross section view similar to FIG. 3, showing the position for the linkage for scrambling the code in the lock chamber and resetting the time-delay device in the opening mode;
FIG. 5 is a similar view to that of FIG. 3, showing a linkage between the control shaft of the permutation lock chamber and the clutch, for driving the unlatching mechanism to the unlatching position;
FIG. 6 is a cross section view taken on the plane on the lines 6-6 in FIG. 3, showing the cam surfaces on the linkage;
FIG. 7 is a three-dimensional view of the control shaft arm on the lock chamber, showing the cam surfaces for operating the time-delay device;
FIG. 8 is a cross section view showing the linkage and clutch in the operating pos~tion, as shown in FIG. 4, for the scrambling of the code in the lock chamber and resetting of the time delay device;
FIG. 9 is a cross section v~ew with the linkage in a position similar to that as shown in FIG. 3; and FIG. 10 is an exploded view of the clutch, showing the components in the clutch.
1~6~5~
Referring to the drawings~ ~IG. 1 illustrates the permutation lock 1 on a door 2~ an outside door knob 4 and the inside doorknob 18. The latch element 44 is in the extended position for engaging a stop in the plate 22.
The pushbuttons 5 are provided for inserting the code in the lock chamber which is immediately behind the panel 6.
FIG. 2 illustrates a cross section view of the device shown in FIG. 1, with the lock chamber 7 immediately behind the pushbuttons 5 and panel 6. Rotation of the control shaft 8 is controlled by the lock chamber mechanism.
A time-delay device 9 is positioned in a cavity 10 in the door 2. The time-delay device 9 includes a plunger 11 which extends forwardly into the compartment 12 and interferes with the operation of the linkage 13. The plunger 11 is retracted by the cams 28 and 29 when the linkage is operated and progresses forwardly to an interfering position during a predetermined time interval. The microswitch 16 provides terminals for that connection to a signalling device which will indicate if there is tampering or opening of the lock.
The indicator can be positioned at a remote location to provide the owner a means of determining when there is someone attempting to operate the lock. An adjustable knob 17 controls the time interval for operation of the time delay deviee 9. For the purpose of illustration, the device may be an air control device with a diaphragm and an adjustable orifice controlled by an adjustable knob 17 to control the duration of time for the plunger to move forward to an extended interfering position.
The inner knob 18 on the inside of the door will operate the latch element 44 without use of the permutation lock 1.
'.- .
~ 267543 The outer knob 4 operates through a drive shaft 19 extending intc the clutch 20. A shaft 21 extends into the latch operating mechanism behind the plate 22.
FIG. 3 illustrates the position of the linkage and the control shaft when the latch is in the extended position and the door is latched. The housing 23 encloses the lock chamber 7 and the control shaft 8 is rotated to neutral position, as shown. The control shaft arm 24 extends to the link 25. The control shaft arm 24 also has two cam arms 26 and 27. The cam 28 on cam arm 27 resets the time-delay mechanism when the linkage is operated to scramble the code in the lock chamber 7. The plunger 11 is shown in section and extended to an interfering position with the linkage. The cam 29 operates to reset the time delay mechanism if the linkage has been rotated to its position shown in FIG. S and retained in th~s position long enough for the time dela~ mechanism to cycle to its extended position.
FIG. 6 illustrates a section view of the cams and the plunger 11;
FIG. 4 illustrates the scrambling or "cancelling"
position, and also the reset position for -the time delay mechanism. The control shaft arm 24 has been rotated in a clockwise direction, as viewed in FIG. 4 relative to the view in FIG. 3. The reset disc 30 has been rotated in a counterclock~ise direction and the linkage has changed position, as indicated. This operation scrambles the code in the lock chamber 7;
FIG. 5 illustrates the l~nkage moved to a position for retracting a latch. The linkage has shifted to the position where the clutch actuator disc arm 31 is rotated in a counter-.. . .
~-iX67S~3 clockwise direction. Thi~ carries the lin~s 32 and 33 to the position shown. The reset disc arm 3~ remains in the fixed position;
To rotate the linkage ta this position, normally the cam 29 would interfere with the plunger 11 unless the linkage is rotated in a clockwise direction first allowing the cam 28 to reset the plunger 11 and move it out of the way of the linkage. If the latch mechanism were held in this position for any length of time for the duration of the return cycle of the time delay mechanism, the cam 29 would reset the time delay mechanism when it is rotated in a clockwise direction to the normal latch extended position;
FIG. 8 illustrates the position for resetting or scrambling the code in the lock chamber, while FIG. 9 shows the clutch in the unlatching position;
FIG. 10 illustrates the components of the clutch for transmitting the unlatching force from the outer knob 4 to unlatch the latch 44;
FIG. 10 shows the reset disc 35 integral with a reset disc arm 30 connected through the pin 36 to the link 32.
The reset disc 35 is provided with the tabs 38 which drive through the slots 39 in the cammed clutch disc 40. The reset disc 35 is also provided with the tabs 41 which extend forwardly into the openings 42 on the plate 43 of the housing.
The housing also includes the housing member 14 which has an end wall 45 and the cylindrical portion 46.
The cammed clutch disc 40 is formed with protrusions 47 and 48 each having cammed surfaces 49 and 50. These cammed surfaces engage mating cam surfaces 51 and 52 on the protrusions 53 in the c].utch actuator disc 54. Nor~ally the spring 55 biases the cammed disc 40 in engagement with the clutch actuator disc 54 and the cammed surfaces provide a ~26754;~
drive between the t~o disc~. ~he spring 55 provides a force to overcome the spring 56 and provide the drive.
Spring 55 also biases the clutch actuator disc 54 forwardly, causing the surface 57 on the forward ends of the cylindrical portion of the disc to engage the reset disc 35 and bias the reset disc 35 so that the tabs 41 enter the openings 42 and lock the reset disc to the housing plate 43.
The cammed disc 40 is formed with a hub 58 which extends to an abutting engagement with,the plate 43 of the housing. The jaws 59 of the cammed disc 40 extend through an opening in the end plate 43 and rotate within the bearing 60 which is retained in the plate 43. A spindle 61 which may be keyed to the outer knob, extends centrally within the sleeve 62 which is connected to the knob 4.
Accordingly, the knob 4 operates the cammed disc 40 and drives the clutch actuator disc 54. The clutch actuator disc is also formed with a hub 63. In the forward position of the latch operating disc, the lugs 65 are held dis-engaged from the holes 66 in the rear walls 4' of the clutch housing 14.
It will be noted that the latch operating disc 54 has an elongated hub 63 which projects rearwardly therefrom to a central hole in the rear wall 45 of the clutch housing beyond the rear end of spindle 61, to rotatably receive the forward end portion of the latch actuating shaft 67. A pin 68 projects radially from the outside of the shaft and into a notch 69 to establish a driving connection between the operating disc 54 and the latch actuating shaft 67 capable of accommodating rotation of the shaft relative to the latch operating disc through an angle of 90 .
Such relative rotation is necessary at times when the spindle ~267S~
61 is drivingly connected to a key-over-ride mechanism in the outer knob 4, as for example, a pin tumbler lock which has an operating stroke of 180. In that case, the forward end of the latch actuat~ng shaft 67 is half cut away to provide a flat drive abutment 70 lying in a plane containing the shaft axis. A drive lug 71 on the rear end of the spindle 61 is then so located with respect to the abutment 70 as to enable the spindle to rotate 90 in the clockwise directian, as viewed from the knob 4, be~ore it comes into driving relation with the shaft abutment 70 and rotates the latter the next 90 relative to the latch operating disc 54. The latch operating shaft 67 is provided with a square end for operating the latch in the door.
Normally the latch is operated from the outside knob 4 which drives the cammed disc 40 and through the cam surfaces engaging the mating cam surfaces on the clutch operating disc 54. If there is no interference of the linkage 13, the drive normally retracts the latch for opening of the door. When, however, there is interference with the linkage 13, the cammed drive disc 40 rotates relative to the clutch operating disc 54 and forces the clutch operating disc 54 rearwardly. This causes the abutment 65 to extend into the opening 66 and lock the clutch operating disc 54.
With a rearward movement of the clutch operating disc 54, the spring 56 biases the reset diSc 35 forwardly until the tabs 38 engage the slots 39 in the forward end of the cammed drive disc 40. Accordingly, then the reset disc 35 is rotated to the position shown in FIG. 4, and the control shaft 8 is rotated and the chamber lock is scrambled.
33 The deuice operates in the following manner:
The outside knob 4 is rotated to retract the latch.
6~543 Rotation of the knob 4 in a clockwise direction causes the linkage 13 to operate. Since the plunger 11 of the time delay mechanism extends into the path of motion of the cams 28 and 29, it interferes with the movement of the linkage.
This, in turn, causes the cammed drive disc 40 to rotate relative to the clutch actuator disc 54 and drive the clutch actuator disc 54 rearwardly so that the lugs 65 move rearwardly into the opening 66 of end wall 45 and lock the clutch actuating disc 54 in a stationary position. The rearward movement of the clutch actuating cam 54 allows the spring 56 to bias the reset disc 35 rearwardly, unseating the tabs 41 from the openings 42 in the plate 43 of the clutch housing. This in turn, permits the reset disc 35 to be rotated by the cammed drive disc 40 and operate the linkage. The linkage operates the control shaft 8 and scrambles or cancels any code that may remain in the lock chamber. Release of the knob will allow it to rotate counterclcckwise. Counterclockwise rotation to return the knob 4 to its original retracted position is caused by the springs 80 engaging the pin 81 in the shaft 82. The shaft 82 rotates counterclockwise until the pin 81 returns to a rest position against the stop 83 which is fastened to the panel 6 of the chamber housing.
Rotation of the knob 4 and the linkage in the manner described also provides another function in that the cam 28 on the control shaft arm 24 biases the plunger 11 rearwardly moving the plunger out of the path of the linkage or cams 28 and 29. The plunger will remain in a retracted position for a predetermined duration of time.
The duration of time is adjustable by an adjustable knob on the adjustment 17.
~675f~3 When the code is -then applied to the buttons 5 on the panel 6, the knob 4 is again rotated and, because there is no interference with the movement of the linkage due to shaft 8, the knob will rotate cammed drive disc 40 which will carry the clutch operating disc 54. Movement of the clutch operating disc 54 will drive the pin 68 and shaft 67 and retract the latch.
The lock chamber, being decoded, allows shaft 8 to rotate in the opposite direction which carried the arm 31 of the latch actuating disc 54. Accordingly, the latch is retracted and the linkage swings to the position shown in Fig. 5 and, in this position, the latch is retracted and the chamber code will be cancelled when it returns to its former position, as shown in FIG. 3.
When the knob 4 is allowed to rotate counterclockwise the linkage will return to the position shown in FIG. 3 and the code will be cancelled from the permutation lock chamber.
Adjustment of the adjustor 17 will control the duration of time of the time delay device. The time may be shortened or extended, as desired. The microswitch 16 is also provided with an electrical circuit to the remote indicator which will indicate to the personnel at a remote location that an attempt has been made to open the door, or that the door has been opened.
Claims (10)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A latching means comprising:
a permutation lock having a latch element;
a control element releasable for motion in one direction from a normal position responsive to proper decoding of the permutation lock;
a first rotatable clutch member connected to said latch element for retracting said latch element in response to rotation of said clutch member in one direction;
a second rotatable clutch member for transmitting such latch retracting rotation through said clutch member;
drive means providing a rotation transmitting connection between said clutch members which is disruptable upon movement of one of said member to an inactive position in a predeter-mined direction along an axis of rotation relative to the other clutch member;
connecting means connecting said control element with said first clutch member whereby rotary latch retracting motion of the latter is interfered with, except when the permutation lock has been properly decoded, said drive means on said clutch members rendered ineffective by such interference with latch retracting rotation of the clutch member to move said member relative to the other to an inactive position;
a delayed relocking device having a retracted lock opening mode and an extended lock closed mode, said connecting means normally biasing said delayed relocking device to a retracted position when moving in one direction, means in said delayed relocking device biasing said device to an extended position in a predetermined time, said delayed relocking device in the extended position interfering with movement of said linkage means in a second direction and causing said first clutch member to move relative to the other to its said inactive position, except for a predetermined time from the setting of the opening mode of said delayed relocking device.
a permutation lock having a latch element;
a control element releasable for motion in one direction from a normal position responsive to proper decoding of the permutation lock;
a first rotatable clutch member connected to said latch element for retracting said latch element in response to rotation of said clutch member in one direction;
a second rotatable clutch member for transmitting such latch retracting rotation through said clutch member;
drive means providing a rotation transmitting connection between said clutch members which is disruptable upon movement of one of said member to an inactive position in a predeter-mined direction along an axis of rotation relative to the other clutch member;
connecting means connecting said control element with said first clutch member whereby rotary latch retracting motion of the latter is interfered with, except when the permutation lock has been properly decoded, said drive means on said clutch members rendered ineffective by such interference with latch retracting rotation of the clutch member to move said member relative to the other to an inactive position;
a delayed relocking device having a retracted lock opening mode and an extended lock closed mode, said connecting means normally biasing said delayed relocking device to a retracted position when moving in one direction, means in said delayed relocking device biasing said device to an extended position in a predetermined time, said delayed relocking device in the extended position interfering with movement of said linkage means in a second direction and causing said first clutch member to move relative to the other to its said inactive position, except for a predetermined time from the setting of the opening mode of said delayed relocking device.
2. A locking means comprising:
a permutation lock controlling retraction of a latch element;
a rotatable drive member;
a control element on the permutation lock releasable for motion in one direction out of a neutral position after proper decoding of the permutation lock and movable in the opposite direction from a neutral position at the other times to effect resetting of the permutation lock;
a first rotatable clutch member driven by said rotatable drive member to effect retraction of said latch element;
drive means between said members allowing relative movement between said members to provide active drive or drive interruption;
linkage means connecting the control element with said clutch member so that the rotation thereof is interfered with except upon proper decoding of the permutation lock mechanism;
said drive means on said members rendered ineffective at times when rotation of the clutch member is thus interfered with, for axial relative movement of said members to their said inactive positions;
a second clutch element connected through said linkage means with said control element;
means providing drive connection between the second clutch element and the drive member effective only in said inactive position of said first clutch member to translate said latch releasing rotation of the drive member into motion of the control element in said opposite direction to effect resetting of the permutation lock member;
a time delayed relocking device having means selectively interfering with said linkage means and drive between the drive and first clutch member; and means normally biasing said device to an interfering position with said linkage means in a predetermined time of duration;
manual means on said linkage means for biasing said device from an interfering position with said linkage means, said device thereby interrupting drive for retraction of said latch when said delayed relocking device is in the extended interfering position.
a permutation lock controlling retraction of a latch element;
a rotatable drive member;
a control element on the permutation lock releasable for motion in one direction out of a neutral position after proper decoding of the permutation lock and movable in the opposite direction from a neutral position at the other times to effect resetting of the permutation lock;
a first rotatable clutch member driven by said rotatable drive member to effect retraction of said latch element;
drive means between said members allowing relative movement between said members to provide active drive or drive interruption;
linkage means connecting the control element with said clutch member so that the rotation thereof is interfered with except upon proper decoding of the permutation lock mechanism;
said drive means on said members rendered ineffective at times when rotation of the clutch member is thus interfered with, for axial relative movement of said members to their said inactive positions;
a second clutch element connected through said linkage means with said control element;
means providing drive connection between the second clutch element and the drive member effective only in said inactive position of said first clutch member to translate said latch releasing rotation of the drive member into motion of the control element in said opposite direction to effect resetting of the permutation lock member;
a time delayed relocking device having means selectively interfering with said linkage means and drive between the drive and first clutch member; and means normally biasing said device to an interfering position with said linkage means in a predetermined time of duration;
manual means on said linkage means for biasing said device from an interfering position with said linkage means, said device thereby interrupting drive for retraction of said latch when said delayed relocking device is in the extended interfering position.
3. A looking means comprising:
a permutation lock controlling retraction of a latch element;
a rotary drive member;
a control element on the permutation lock releasable for motion in one direction out of a neutral position after proper decoding of the permutation lock and movable in the opposite direction from the neutral position at times to effect resetting of the permutation lock;
a first rotatable clutch member driven by said rotatable drive member to effect retraction of said latch element;
linkage means connecting the control element with said clutch member so that the rotation thereof is interfered with except upon proper decoding of the permutation lock mechanism;
drive means between said members allowing transient relative movement between said members to provide active drive or interrupted drive;
said drive means on said members rendered ineffective at times when notation of the clutch member is thus interfered with for moving said members to their interrupted drive position;
a second clutch member connected by said linkage means to the control element;
means providing driving connection between the second clutch member and drive member effective only in said inter-rupted position of said drive and first clutch members to translate said latch releasing rotation of the drive member into motion of the control element in said opposite direction to effect resetting of the permutation lock;
a delayed relocking device including biasing means normally biasing an element to an interfering position with said linkage means;
a cam member on said linkage means selectively engaging said device for biasing said element to a non-interfering position when said linkage is operated, said biasing means biasing said element of said delayed relocking device to an interfering position after a predeter-mined time subsequent to decoding of said lock to thereby prevent the unlocking of said permutation lock even when the permutation lock is decoded.
a permutation lock controlling retraction of a latch element;
a rotary drive member;
a control element on the permutation lock releasable for motion in one direction out of a neutral position after proper decoding of the permutation lock and movable in the opposite direction from the neutral position at times to effect resetting of the permutation lock;
a first rotatable clutch member driven by said rotatable drive member to effect retraction of said latch element;
linkage means connecting the control element with said clutch member so that the rotation thereof is interfered with except upon proper decoding of the permutation lock mechanism;
drive means between said members allowing transient relative movement between said members to provide active drive or interrupted drive;
said drive means on said members rendered ineffective at times when notation of the clutch member is thus interfered with for moving said members to their interrupted drive position;
a second clutch member connected by said linkage means to the control element;
means providing driving connection between the second clutch member and drive member effective only in said inter-rupted position of said drive and first clutch members to translate said latch releasing rotation of the drive member into motion of the control element in said opposite direction to effect resetting of the permutation lock;
a delayed relocking device including biasing means normally biasing an element to an interfering position with said linkage means;
a cam member on said linkage means selectively engaging said device for biasing said element to a non-interfering position when said linkage is operated, said biasing means biasing said element of said delayed relocking device to an interfering position after a predeter-mined time subsequent to decoding of said lock to thereby prevent the unlocking of said permutation lock even when the permutation lock is decoded.
4. A locking means as set forth in claim 1, wherein said means connecting said control element with said clutch member defines a linkage, and said delayed relocking device includes a plunger reciprocating between a linkage interfering and non-interfering position.
5. A locking means as set forth in claim 1, wherein said means connecting said control element of said first clutch member defines a linkage, said linkage includes at least one cam, said delayed relocking device includes a plunger reciprocating between an interfering and a non-interfering position with said linkage, said cam operating to bias said plunger to a non-interfering position with said linkage to allow decoding of said lock chamber.
6. A locking means as set forth in claim 2, wherein said delayed relocking device includes a reciprocating plunger, said means connecting said control element with said clutch member includes a linkage defining a path of motion interfering with the path of motion of said reciprocating plunger, whereby interference between said plunger and linkage prevents operation or retraction of said latch element.
7. A looking means as set forth in claim 1, wherein said control element includes a rotating shaft, said means connecting said control element with said clutch member defines a linkage, said linkage allowing rotation and counterrotation of said control shaft responsive to interference between said delayed relocking device and said linkage.
8. A locking means as set forth in claim 2, wherein said means connecting said control element and said clutch member defines a linkage including a pair of cams, said delayed relocking device includes a member moving into and out of the path of motion of said linkage, said cams biasing said member of said delayed relocking device to a non-interfering position with said linkage to allow operation of said linkage and operation of said lock.
9. A locking means as set forth in claim 3, wherein said delayed relocking device includes a reciprocating element normally in an interfering position.
10. A locking means as set forth in claim 2, wherein said control element defines a control shaft, said means connecting said control element with said clutch member defines a linkage, said first clutch member defines a clutch actuating member including an arm connected to said linkage, said second clutch member includes a clutch reset disc having an arm connected to said linkage, said linkage selectively and alternatively operated by said clutch actuating member and said reset clutch disc member responsive to interference and non-interference with operation of said linkage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US776,626 | 1985-09-16 | ||
| US06/776,626 US4640110A (en) | 1985-09-16 | 1985-09-16 | Automatic delay relocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1267543A true CA1267543A (en) | 1990-04-10 |
Family
ID=25107938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000506822A Expired - Fee Related CA1267543A (en) | 1985-09-16 | 1986-04-16 | Automatic delay relocking device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4640110A (en) |
| JP (1) | JPS6268977A (en) |
| CA (1) | CA1267543A (en) |
| GB (1) | GB2180589B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754625A (en) * | 1987-03-16 | 1988-07-05 | Mcgourty Thomas K | Electrically controlled lock |
| US4941334A (en) * | 1989-01-31 | 1990-07-17 | Ilco Unican Inc. | Door locking arrangement |
| US6000254A (en) * | 1998-03-31 | 1999-12-14 | Ilco Unican Corporation | Door lock combination chambers |
| GB2343482B (en) * | 1998-11-04 | 2000-09-27 | Wang Song Ming | Numeral lock with resettable feature |
| US6449995B1 (en) | 2000-03-09 | 2002-09-17 | International Business Machines Corp. | Automatic deadbolt |
| JP3542797B2 (en) * | 2002-06-26 | 2004-07-14 | 株式会社長沢製作所 | Button lock |
| US6963280B2 (en) * | 2003-06-16 | 2005-11-08 | Honeywell International Inc. | Door security device for use in security systems |
| US7007526B2 (en) * | 2003-09-08 | 2006-03-07 | Harrow Products, Inc. | Electronic clutch assembly for a lock system |
| US9051761B2 (en) | 2011-08-02 | 2015-06-09 | Kwikset Corporation | Manually driven electronic deadbolt assembly with fixed turnpiece |
| US9982455B2 (en) * | 2013-01-10 | 2018-05-29 | Schlage Lock Company Llc | Side mounted privacy lock for a residential door |
| US9487971B2 (en) | 2013-03-15 | 2016-11-08 | Spectrum Brands, Inc. | Electro-mechanical locks with bezel turning function |
| US9423211B2 (en) * | 2014-11-03 | 2016-08-23 | Truckvault, Inc. | Locking container for firearms |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2079702A (en) * | 1934-05-15 | 1937-05-11 | Sargent & Greenleaf | Lock mechanism |
| US3702551A (en) * | 1971-02-19 | 1972-11-14 | Mosler Safe Co | Time delay combination locks |
| US3747377A (en) * | 1972-02-07 | 1973-07-24 | Unican Security Sys Ltd | Door locking means |
| FR2174438A5 (en) * | 1972-03-03 | 1973-10-12 | Beharelle Bernard | |
| IE54719B1 (en) * | 1982-10-28 | 1990-01-17 | Terry P A Security Consult | Lever lock safety device |
-
1985
- 1985-09-16 US US06/776,626 patent/US4640110A/en not_active Expired - Lifetime
-
1986
- 1986-04-16 CA CA000506822A patent/CA1267543A/en not_active Expired - Fee Related
- 1986-05-20 JP JP61116038A patent/JPS6268977A/en active Pending
- 1986-07-04 GB GB8616352A patent/GB2180589B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2180589A (en) | 1987-04-01 |
| JPS6268977A (en) | 1987-03-30 |
| GB8616352D0 (en) | 1986-08-13 |
| US4640110A (en) | 1987-02-03 |
| GB2180589B (en) | 1988-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |