US3919869A - Magnetic door lock system - Google Patents
Magnetic door lock system Download PDFInfo
- Publication number
- US3919869A US3919869A US470188A US47018874A US3919869A US 3919869 A US3919869 A US 3919869A US 470188 A US470188 A US 470188A US 47018874 A US47018874 A US 47018874A US 3919869 A US3919869 A US 3919869A
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- US
- United States
- Prior art keywords
- key
- lock
- door
- armature
- magnetic
- Prior art date
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
- E05B47/0696—Controlling mechanically-operated bolts by electro-magnetically-operated detents locking the bolt by an electromagnet in the striker
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
- G07C9/00722—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with magnetic components, e.g. magnets, magnetic strips, metallic inserts
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
- G07C9/00904—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses for hotels, motels, office buildings or the like
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B63/00—Locks or fastenings with special structural characteristics
- E05B63/12—Locks or fastenings with special structural characteristics with means carried by the bolt for interlocking with the keeper
- E05B63/128—Locks or fastenings with special structural characteristics with means carried by the bolt for interlocking with the keeper with additional bolt in the striker
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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S402/00—Binder device releasably engaging aperture or notch of sheet
- Y10S402/502—Container with sheet retainer
-
- 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
- Y10T292/00—Closure fasteners
- Y10T292/68—Keepers
- Y10T292/696—With movable dog, catch or striker
- Y10T292/699—Motor controlled
-
- 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
- Y10T292/00—Closure fasteners
- Y10T292/68—Keepers
- Y10T292/696—With movable dog, catch or striker
- Y10T292/702—Pivoted or swinging
-
- 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
- Y10T70/60—Systems
- Y10T70/625—Operation and control
-
- 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
- Y10T70/60—Systems
- Y10T70/625—Operation and control
- Y10T70/65—Central control
-
- 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
- Y10T70/7051—Using a powered device [e.g., motor]
- Y10T70/7057—Permanent magnet
-
- 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
- Y10T70/7441—Key
- Y10T70/778—Operating elements
- Y10T70/7791—Keys
- Y10T70/7904—Magnetic features
Definitions
- a lock system as for a door, has a magnetic reader which reads a magnetic code on a key moved past the reader and communicates the code to a control device having electronic logic circuits which compare the key code with a lock code. When the two codes correspond, the control device will energize an electromagnet which moves a locking armature from a catch on a locking bar, allowing the bar to be withdrawn from the door frame and the door to be opened. Provisions to give warning of unauthorized unlocking of a door, and to lock and unlock one or more doors from a central location are also provided.
- the magnetic system may be combined with a conventional pin-tumbler system for added flexibility or security.
- FIG. 3a is a diagrammatic representation of FIG. 3a
- FIG. 4a is a diagrammatic representation of FIG. 4a
- the present invention has as its object the alleviation of the disadvantages and difficulties indicated above, particularly of increasing appreciably the security of individual locks and locking systems against unauthorized tampering and entry.
- the key used in the present invention is magnetically coded.
- a magnetic instrument in the lock reads the keys coding when the key is brought into proximity therewith.
- a control device in communication with the magnetic reader in the lock compares the keys coding with a code for the door or lock and, if the codes match, unlocks the door with an electromagnet.
- a signaling circuit is provided by the control device and lock to indicate when a door is locked or unlocked.
- control device may be connected to an alarm circuit to warn of unauthorized activation of the electromagnet to unlock a door.
- the magnetic information may be encoded on the back side of a conventional-shaped key and a reading device provided on the upper side of the lock, adjacent the back of the key when it is introduced into the lock keyway.
- the lock cylinder may have a radial groove in which the reading device fits to be adjacent to the back of the key.
- Doors in a locking installation may be grouped to correspond with a switch plate in the control device.
- On the switch plate for each group of doors is disposed a switch-circuit for processing information from the keys and for actuation of the electromagnetic locking device of the doors. All the switch-circuits of each plate are connected with group switches and also with a central switch.
- the locking armature of the electromagnetic locking device has an electrical contact through which the electric circuit of a signal or alarm device is closed upon a change in position of the locking armature such as in an engagement with or a disengagement from the locking bar.
- FIG. 1 is a cut-away front view of a door employing the magnetic locking device of the present invention.
- FIG. 2 is a top view through the door and locking mechanism-of FIG. 1.
- FIG. 3 is a partial, cross-sectional detailed view through the side of the lock with a key inserted in the cylinder.
- FIG. 3a is a front view of the lock without the key.
- FIG. 4 is a top view of the lock.
- FIG. 4a shows the front of the lock with the cylinder turned.
- FIG. 5 shows a locking system installation with control panel and groups of doors to be secured.
- a locking bar 1 is slidably mounted within a door above the axis of rotation of inner and outer rotary knobs 2 and 2a, respectively, which engage via transport pins 3 and 3a in corresponding recesses 4 and 5 in the locking bar when either knob 2 or 2a is rotated.
- the locking bar 1 possesses catch-member 6 and 6a as well as a recess 7, into which recess may drop a locking armature 8.
- the locking bar 1 has an'inclination 9 making possible the engagement of a locking armature 8 with the locking bar upon full rotation of either knob.
- the locking bar 1 is located in a housing 10 which is installed in the door.
- a housing 1 l disposed in the door frame contains the electromagnetic locking and unlocking device, which is controlled by means of a key 20 with magnetic coding which may be introduced into the lock cylinder 12.
- the electromagnetic device includes a lifting magnet or solenoid 13.
- the locking armature 8, rotatable about a pin 14, may engage the recess 7 of the locking bar.
- the locking bar may be brought into any of three positions:
- Locking bar fully recessed up to the end of the housing 10. The door may be opened.
- Locking bar moved to catch 6A.
- the door may be closed and opened again solely with the aid of the rotary knob.
- Locking bar moved to catch 6.
- the door is bolted and the locking armature 8 has engaged the recess 7; to open the door, actuation of the solenoid 13 is necessary. Unlocking the door by rotating one of the rotary knobs alone is not possible.
- the lock 12 is equipped with a reading device 21 which is connected by means of conductors 15 to an electronic control device which may be provided adjacent to the lock or at a central location.
- the control device may be constructed for example as a Schmitt-Trigger or as a bistable or monostable multivibrator which, upon communication with the code of a key as it is inserted into the lock, receives a starting voltage by which it activates its logic circuits. As the key is introduced further into the lock, the coding is scanned or read or interrogated by means of the reading device 21.
- a relay not shown, is activated by the output device and completes a circuit via conductors 16 to energize the solenoid 13, which in turn lifts the locking armature 8 from the locking bar recess 7.
- the locking armature 8 has a contact plate 18, which in its raised position will close contacts 17 of a signaling or alarm device. The contacts 17 are closed when the locking armature 8 is raised and the locking bar 1 is thereby disengaged.
- the logic, input, and output circuitry of control devices suitable for use with this invention are well known to the art and are not shown here.
- the control device input circuits may be attached constantly to a source of current, or power may be provided by means of contacts 26 provided on the lock body 12 which complete a circuit 25, 27 upon introduction of the key or upon its rotation. A circuit closure after rotation of the key will be important if the lock possesses, in addition to the reading device and electromagnetic lock, the usual mechanical tumblers.
- the current feed may also be provided by contacts between the door and the door frame which are closed upon the door being closed. Capacitor connections may also be used between the door and the door frame if alternating current power is used.
- FIGS. 3 and 4 show a key 20 carrying a magnetic coding strip 19.
- the key is also formed to displace mechanical pin-tumblers of a conventional sort.
- the lock 12 houses corresponding pins 22 and rotary cylinder pins 23, to obtain mechanical locking capacities. Where both mechanical and. magnetic locking devices are used, the locking bar 1 may be released only when lock 12 is actuated by a key 20 which both carries the correct magnetic information and can turn the lock mechanically.
- a radial groove 24 is provided in the lock housing and has shoulders which limit the rotation of the lock cylinder.
- the magnetic key-reader device 21 is inserted into the groove 24. Conductors connect the reading device 21 with the electronic control device. From the control device, conductors 25, the contact device 26, and the conductors 27 conduct current from the control device or relay to the lifting magnet or solenoid 13. When the key is withdrawn from the lock, the control device will return to its initial state.
- each door 5 on a control panel, a functional and a switch circuit to process .information from a key in the lock and for actuating the control relay respectively.
- Each individual switch circuit on the control panel is connected with a group switch and with the central switch for manual locking or unlocking of each door, of all doors in a group, or of all doors in a structure, respectively.
- a key having a pair of longitudinal surfaces, and a strip having a magnetically readable intelligenc on one of said surfaces; a lock having a rotatable cylinder into which said key may be inserted on a path, and a dynamic magnetic reading device adjacent said insertion path in said cylinder and adjacent said magnetic strip on said key; control means having input circuit means cooperating with said magnetic reading device in said lock, comparison means for comparing said intelligence on said magnetic strip of said key during insertion of said key into said lock cylinder with a control code stored in the comparison means, and output circuit means cooperating with an actuating means; said actuator means having an electro-magnet connected in said output circuit, an armature having a catch opposite a pivot bearing about which the catch may pivot toward and away from said electro-magnet in response to changes in the current flow through said electromagnet provided by said output circuit, and a door bolt movable to and from engagement with said latch, the bolt having an open position, a latched position, and a caught or locked position, said bolt being moved among its
- said key having a mechanically-readable intelligence on the other of said longitudinal surfaces; and said lock having mechanically-displaceable lock pin means engageable with said other key surface on said path selectively to permit and prevent rotation of said lock depending on the mechanical intelligence on a key inserted thereinto.
Abstract
A lock system, as for a door, has a magnetic reader which reads a magnetic code on a key moved past the reader and communicates the code to a control device having electronic logic circuits which compare the key code with a lock code. When the two codes correspond, the control device will energize an electromagnet which moves a locking armature from a catch on a locking bar, allowing the bar to be withdrawn from the door frame and the door to be opened. Provisions to give warning of unauthorized unlocking of a door, and to lock and unlock one or more doors from a central location are also provided. The magnetic system may be combined with a conventional pin-tumbler system for added flexibility or security.
Description
United States Patent [191 Fromm Nov. 18, 1975 21 Appl. No.: 470,188
[30] Foreign Application Priority Data May 19, 1973 Germany 2325566 [52] US. Cl. 70/263; 70/264; 70/276; 70/413; 292/341.l6; 292/341.17
[51] Int. CL' EOSB 35/14; EOSB 47/04, 1505B 56/36; 13058 57/00 [58] Field of Search 70/262-264, 70/276, 277, 283, 413, 432; 292/153,
1/1974 Hochman et a1. 70/263 X 3,837,194 9/1974 Fish 70/413 X FOREIGN PATENTS OR APPLICATIONS 284,194 5/1915 Germany 292/341.16
Primary ExaminerRobert L. Wolfe Assistant Examiner-Carl F. Pietruszka Attorney, Agent, or FirmI-Ii1l, Gross, Simpson, Van Santen, Steadman, Chiara & Simpson I 57 ABSTRACT A lock system, as for a door, has a magnetic reader which reads a magnetic code on a key moved past the reader and communicates the code to a control device having electronic logic circuits which compare the key code with a lock code. When the two codes correspond, the control device will energize an electromagnet which moves a locking armature from a catch on a locking bar, allowing the bar to be withdrawn from the door frame and the door to be opened. Provisions to give warning of unauthorized unlocking of a door, and to lock and unlock one or more doors from a central location are also provided. The magnetic system may be combined with a conventional pin-tumbler system for added flexibility or security.
3 Claims, 7 Drawing Figures U.S. Patent Nov. 18,1975 Sheet1of3 3,919,869
FIG. I
FIG. 2
US. Patent Nov. 18, 1975 FIG. 3
FIG. 3a
25 FIG. 4
FIG. 4a
USw Patent Nov. 18, 1975 Sheet 3 of 3 MAGNETIC DOOR LOCK SYSTEM BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to improvements in magnetic door locks and access security systems, including surveillance and central control thereof.
2. Description of the Prior Art It is well known with mechanical pin-tumbler locks to provide master keys for all or for different portions of the locks in a security system, as for an apartment building, warehouse, or office. It is also known to lock and unlock doors by means of supplemental electromagnetic devices from a central location. In spite of the general safety and versatility of these prior devices, they have several shortcomings.
1. If a master key is unlawfully made, or such a key is lost, the security of the installation is endangered.
2. Re-establishment of security after such endangerment requires alteration of all locks and production of new sets of keys, an expensive undertaking which may also cause appreciable disruption.
3. No central locking of some or all rooms, or the surveillance of doors thereto from a central point by means of a lock-connected signal-system is possible, necessitating locking of doors one by one and provision of a separate surveillance system.
4. No immediate unlocking of all locked doors from a central location in case of danger is possible, but each door must be unlocked individually.
SUMMARY OF THE INVENTION The present invention has as its object the alleviation of the disadvantages and difficulties indicated above, particularly of increasing appreciably the security of individual locks and locking systems against unauthorized tampering and entry.
The key used in the present invention is magnetically coded. A magnetic instrument in the lock reads the keys coding when the key is brought into proximity therewith. A control device in communication with the magnetic reader in the lock compares the keys coding with a code for the door or lock and, if the codes match, unlocks the door with an electromagnet.
A signaling circuit is provided by the control device and lock to indicate when a door is locked or unlocked.
A further feature of the invention is that the control device may be connected to an alarm circuit to warn of unauthorized activation of the electromagnet to unlock a door.
The magnetic information may be encoded on the back side of a conventional-shaped key and a reading device provided on the upper side of the lock, adjacent the back of the key when it is introduced into the lock keyway.
The lock cylinder may have a radial groove in which the reading device fits to be adjacent to the back of the key.
Doors in a locking installation may be grouped to correspond with a switch plate in the control device. On the switch plate for each group of doors is disposed a switch-circuit for processing information from the keys and for actuation of the electromagnetic locking device of the doors. All the switch-circuits of each plate are connected with group switches and also with a central switch.
The locking armature of the electromagnetic locking device has an electrical contact through which the electric circuit of a signal or alarm device is closed upon a change in position of the locking armature such as in an engagement with or a disengagement from the locking bar.
Also within the scope of the invention is the use of conventional pin-cylinder locks which are modified to incorporate the magnetic protection of the present invention. An advantageous variation of an installation may be provided where only some of the locks of an installation have the additional magnetic coding, where the group and master key systems of the prior art remain in use.
These and further features of the invention will be explained on the basis of embodiments shown by way of example in the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cut-away front view of a door employing the magnetic locking device of the present invention.
FIG. 2 is a top view through the door and locking mechanism-of FIG. 1.
FIG. 3 is a partial, cross-sectional detailed view through the side of the lock with a key inserted in the cylinder. FIG. 3a is a front view of the lock without the key.
FIG. 4 is a top view of the lock. FIG. 4a shows the front of the lock with the cylinder turned.
FIG. 5 shows a locking system installation with control panel and groups of doors to be secured.
DESCRIPTION OF THE PREFERRED EMBODIMENTS A locking bar 1 is slidably mounted within a door above the axis of rotation of inner and outer rotary knobs 2 and 2a, respectively, which engage via transport pins 3 and 3a in corresponding recesses 4 and 5 in the locking bar when either knob 2 or 2a is rotated. The locking bar 1 possesses catch- member 6 and 6a as well as a recess 7, into which recess may drop a locking armature 8. The locking bar 1 has an'inclination 9 making possible the engagement of a locking armature 8 with the locking bar upon full rotation of either knob. The locking bar 1 is located in a housing 10 which is installed in the door.
A housing 1 l disposed in the door frame contains the electromagnetic locking and unlocking device, which is controlled by means of a key 20 with magnetic coding which may be introduced into the lock cylinder 12. The electromagnetic device includes a lifting magnet or solenoid 13. The locking armature 8, rotatable about a pin 14, may engage the recess 7 of the locking bar.
With the aid of one of the rotary knobs, the locking bar may be brought into any of three positions:
a. Locking bar fully recessed up to the end of the housing 10. The door may be opened.
b. Locking bar moved to catch 6A. The door may be closed and opened again solely with the aid of the rotary knob.
c. Locking bar moved to catch 6. The door is bolted and the locking armature 8 has engaged the recess 7; to open the door, actuation of the solenoid 13 is necessary. Unlocking the door by rotating one of the rotary knobs alone is not possible.
The lock 12 is equipped with a reading device 21 which is connected by means of conductors 15 to an electronic control device which may be provided adjacent to the lock or at a central location. The control device may be constructed for example as a Schmitt-Trigger or as a bistable or monostable multivibrator which, upon communication with the code of a key as it is inserted into the lock, receives a starting voltage by which it activates its logic circuits. As the key is introduced further into the lock, the coding is scanned or read or interrogated by means of the reading device 21. If the code on the key matches the code recognized by the control device for that lock or door, a relay, not shown, is activated by the output device and completes a circuit via conductors 16 to energize the solenoid 13, which in turn lifts the locking armature 8 from the locking bar recess 7. The locking armature 8 has a contact plate 18, which in its raised position will close contacts 17 of a signaling or alarm device. The contacts 17 are closed when the locking armature 8 is raised and the locking bar 1 is thereby disengaged. The logic, input, and output circuitry of control devices suitable for use with this invention are well known to the art and are not shown here.
The control device input circuits may be attached constantly to a source of current, or power may be provided by means of contacts 26 provided on the lock body 12 which complete a circuit 25, 27 upon introduction of the key or upon its rotation. A circuit closure after rotation of the key will be important if the lock possesses, in addition to the reading device and electromagnetic lock, the usual mechanical tumblers. The current feed may also be provided by contacts between the door and the door frame which are closed upon the door being closed. Capacitor connections may also be used between the door and the door frame if alternating current power is used.
FIGS. 3 and 4 show a key 20 carrying a magnetic coding strip 19. The key is also formed to displace mechanical pin-tumblers of a conventional sort. The lock 12 houses corresponding pins 22 and rotary cylinder pins 23, to obtain mechanical locking capacities. Where both mechanical and. magnetic locking devices are used, the locking bar 1 may be released only when lock 12 is actuated by a key 20 which both carries the correct magnetic information and can turn the lock mechanically. A radial groove 24 is provided in the lock housing and has shoulders which limit the rotation of the lock cylinder. The magnetic key-reader device 21 is inserted into the groove 24. Conductors connect the reading device 21 with the electronic control device. From the control device, conductors 25, the contact device 26, and the conductors 27 conduct current from the control device or relay to the lifting magnet or solenoid 13. When the key is withdrawn from the lock, the control device will return to its initial state.
A lock installation in accordance with the invention affords the possibilities,
1. Of closing and opening any particular door with an individual key, a group key, or a general key, 2. Locking a group of doors from a central location, 3. Opening a group of doors from the central location, and 4. Locking the entire plant from a central location. Surveillance of individual doors and groups of doors is readily afforded by this system. Construction of an installation is shown diagramatically in FIG. 5. Groups 4 of doors T1, T2, T3, designated by Gl, Gll, and G111, are correlated with a switch-plate in the electronic control device, which stands in a central point C.
Within the control device is disposed for each door, 5 on a control panel, a functional and a switch circuit to process .information from a key in the lock and for actuating the control relay respectively. Each individual switch circuit on the control panel is connected with a group switch and with the central switch for manual locking or unlocking of each door, of all doors in a group, or of all doors in a structure, respectively.
We claim: 1. A magnetically coded prising:
a key having a pair of longitudinal surfaces, and a strip having a magnetically readable intelligenc on one of said surfaces; a lock having a rotatable cylinder into which said key may be inserted on a path, and a dynamic magnetic reading device adjacent said insertion path in said cylinder and adjacent said magnetic strip on said key; control means having input circuit means cooperating with said magnetic reading device in said lock, comparison means for comparing said intelligence on said magnetic strip of said key during insertion of said key into said lock cylinder with a control code stored in the comparison means, and output circuit means cooperating with an actuating means; said actuator means having an electro-magnet connected in said output circuit, an armature having a catch opposite a pivot bearing about which the catch may pivot toward and away from said electro-magnet in response to changes in the current flow through said electromagnet provided by said output circuit, and a door bolt movable to and from engagement with said latch, the bolt having an open position, a latched position, and a caught or locked position, said bolt being moved among its positions by a manually rotatable knob and being immobilized in its locked position by said catch on said armature. 2. A magnetically coded locking system as defined in claim 1, further comprising: said key having a mechanically-readable intelligence on the other of said longitudinal surfaces; and said lock having mechanically-displaceable lock pin means engageable with said other key surface on said path selectively to permit and prevent rotation of said lock depending on the mechanical intelligence on a key inserted thereinto. 3. A magnetically coded locking system as defined in claim 1, further comprising:
a circuit opened and closed by switch means on said armature; and remote alarm means actuated by said circuit when said circuit is opened by a change in position of said armature. 65
door locking system com-
Claims (3)
1. A magnetically coded door locking system comprising: a key having a pair of longitudinal surfaces, and a strip having a magnetically readable intelligence on one of said surfaces; a lock having a rotatable cylinder into which said key may be inserted on a path, and a dynamic magnetic reading device adjacent said insertion path in said cylinder and adjacent said magnetic strip on said key; control means having input circuit means cooperating with said magnetic reading device in said lock, comparison means for comparing said intelligence on said magnetic strip of said key during insertion of said key into said lock cylinder with a control code stored in the comparison means, and output circuit means cooperating with an actuating means; said actuator means having an electro-magnet connected in said output circuit, an armature having a catch opposite a pivot bearing about which the catch may pivot toward and away from said electro-magnet in response to changes in the current flow through said electro-magnet provided by said output circuit, and a door bolt movable to and from engagement with said latch, the bolt having an open position, a latched position, and a caught or locked position, said bolt being moved among its positions by a manually rotatable knob and being immobilized in its locked position by said catch on said armature.
2. A magnetically coded locking system as defined in claim 1, further comprising: said key having a mechanically-readable intelligence on the other of said longitudinal surfaces; and said lock having mechanically-displaceable lock pin means engageable with said other key surface on said path selectively to permit and prevent rotation of said lock depending on the mechanical intelligence on a key inserted thereinto.
3. A magnetically coded locking system as defined in claim 1, further comprising: a circuit opened and closed by switch means on said armature; and remote alarm means actuated by said circuit when said circuit is opened by a change in position of said armature.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2325566A DE2325566B2 (en) | 1973-05-19 | 1973-05-19 | Magnetically / mechanically working lock cylinder |
Publications (1)
Publication Number | Publication Date |
---|---|
US3919869A true US3919869A (en) | 1975-11-18 |
Family
ID=5881522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US470188A Expired - Lifetime US3919869A (en) | 1973-05-19 | 1974-05-15 | Magnetic door lock system |
Country Status (9)
Country | Link |
---|---|
US (1) | US3919869A (en) |
JP (1) | JPS5725711B2 (en) |
AT (1) | AT344039B (en) |
CH (1) | CH574034A5 (en) |
DE (1) | DE2325566B2 (en) |
FR (1) | FR2229842B1 (en) |
GB (1) | GB1475395A (en) |
IT (1) | IT1012384B (en) |
NL (1) | NL7405346A (en) |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4270370A (en) * | 1978-11-20 | 1981-06-02 | Oftelie Phil C | Radio operated latch dead-bolting system |
US4280118A (en) * | 1977-11-30 | 1981-07-21 | Sachs-Systemtechnik Gmbh | Key-controlled electromagnetic operating mechanism for a lock and the like |
US4288944A (en) * | 1979-06-04 | 1981-09-15 | Donovan Terrence P | Security door |
US4563886A (en) * | 1982-06-07 | 1986-01-14 | Elektronikbau Krippner & Kletzmaier Gesellschaft M.B.H. & Co. | Locking arrangement for securing doors |
FR2580025A1 (en) * | 1984-07-18 | 1986-10-10 | Sachs Systemtechnik Gmbh | |
US4616865A (en) * | 1984-01-05 | 1986-10-14 | Wormald International, Limited | Security lock assembly |
US4649725A (en) * | 1984-08-21 | 1987-03-17 | Uniqey International Ltd. | Door lock |
US4815773A (en) * | 1987-02-17 | 1989-03-28 | Merrell Richard L | Door lock assembly for freight vehicles |
US4904005A (en) * | 1988-11-18 | 1990-02-27 | Harrow Products, Inc. | Entrance security system |
US4922115A (en) * | 1987-12-28 | 1990-05-01 | Toshiba Glass Co., Ltd. | Fluorescent glass dosimeter |
US4993757A (en) * | 1989-10-13 | 1991-02-19 | Corzine Robert D | Electromechanical locking device |
US5359322A (en) * | 1992-09-28 | 1994-10-25 | Stanley Home Automation | Method and apparatus for interconnected electronic locks |
US5518282A (en) * | 1993-11-30 | 1996-05-21 | Koei Sangyo Co., Ltd. | Locking device for open-close mechanism of a cabinet |
US5636881A (en) * | 1994-10-21 | 1997-06-10 | Star Lock Systems, Inc. | Automatic latching system with automated unlatching feature |
US5682777A (en) * | 1994-01-21 | 1997-11-04 | R. Schmidt Gmbh | Anti-theft device for a motor vehicle |
US5987944A (en) * | 1996-12-14 | 1999-11-23 | Becker Group Europe Gmbh | Locking device |
US20020014950A1 (en) * | 1998-08-12 | 2002-02-07 | Ayala Raymond F. | Method for programming a key for selectively allowing access to an enclosure |
US6345522B1 (en) | 1998-08-12 | 2002-02-12 | Star Lock Systems, Inc. | Electro-mechanical latching apparatus |
US20020024418A1 (en) * | 1999-08-11 | 2002-02-28 | Ayala Raymond F. | Method for a key to selectively allow access to an enclosure |
US20020024420A1 (en) * | 1998-08-12 | 2002-02-28 | Ayala Raymond F. | Key for selectively allowing access to an enclosure |
US20020142831A1 (en) * | 2001-04-02 | 2002-10-03 | Harold Mattice | Method and apparatus for controlling access to areas of gaming machines |
US20040159134A1 (en) * | 2003-02-12 | 2004-08-19 | Manfred Eichenauer | Safety lock |
WO2002055382A3 (en) * | 2001-01-16 | 2004-11-11 | A.L.S. Aviation Locking Systems Ltd. | Lock system for aircraft cockpit door |
US6867685B1 (en) | 1999-05-10 | 2005-03-15 | Star Lock Systems, Inc. | Electro-mechanical lock assembly |
US20050144991A1 (en) * | 2004-01-06 | 2005-07-07 | Bravo Ramiro H. | Reusable hasp-locking mechanism |
US20070262589A1 (en) * | 2004-11-23 | 2007-11-15 | Control Dynamics Inc. | Latch mechanism for gates and the like |
US7571694B2 (en) | 2007-03-16 | 2009-08-11 | Rick Boerner | Occupancy indication device and method |
US20090255303A1 (en) * | 2008-04-14 | 2009-10-15 | Anatoli Stobbe | Lock cylinder arrangement |
US20110259060A1 (en) * | 2008-11-25 | 2011-10-27 | Tobias Leska | Safety switch for generating a system enable signal depending on the position of a movable guard door |
US20130020817A1 (en) * | 2010-02-02 | 2013-01-24 | Juergen Pullmann | Locking apparatus having a tumbler for safety doors |
US20140300116A1 (en) * | 2013-04-03 | 2014-10-09 | Alexander Hellwig | System For Interlocking and Unlocking a Sliding Door |
DE102016012611A1 (en) * | 2016-10-19 | 2018-04-19 | Roto Frank Aktiengesellschaft | Closure element of a property and method for operating the closure element |
DE102016012603A1 (en) * | 2016-10-19 | 2018-04-19 | Roto Frank Aktiengesellschaft | Lock system for a closure element of a property as well as closure element of the property with the lock system |
US10584515B2 (en) | 2016-09-06 | 2020-03-10 | Ellenby Technologies, Inc. | Electronic lock for safes |
US11639617B1 (en) | 2019-04-03 | 2023-05-02 | The Chamberlain Group Llc | Access control system and method |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5464000A (en) * | 1977-10-31 | 1979-05-23 | Kokusan Kinzoku Kogyo Kk | Magnetic cylinder lock |
CH627513A5 (en) * | 1978-03-29 | 1982-01-15 | Bauer Kaba Ag | LOCKING CYLINDER WITH KEY. |
DE2814650C2 (en) * | 1978-04-05 | 1984-02-02 | EC Erdölchemie GmbH, 5000 Köln | Production of homo- or copolymers of ethylene by the high pressure process in a stirred autoclave with practically complete backmixing |
DE2962140D1 (en) * | 1979-07-16 | 1982-03-25 | Nederlanden Staat | Striking box for retaining the bolt of a door lock |
DE2933453B1 (en) * | 1979-08-17 | 1980-10-09 | Perkut B R | Lock to be operated with a key |
SE424568B (en) * | 1980-05-20 | 1982-07-26 | Gkn Stenman Ab | Cylinder lock and key combination |
CH653400A5 (en) * | 1981-06-17 | 1985-12-31 | Bauer Kaba Ag | LOCK CYLINDER. |
DE3245681C2 (en) * | 1982-01-16 | 1986-02-13 | BKS Sicherheitstechnik GmbH, 5040 Brühl | Non-mechanically / mechanically coded key with a lock cylinder to be operated |
DE3205586C2 (en) * | 1982-02-17 | 1985-10-03 | Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim | Electromechanical locking device for magnetic keys |
JPS58135502U (en) * | 1982-03-09 | 1983-09-12 | 日信工業株式会社 | reservoir |
FR2536106B1 (en) * | 1982-11-15 | 1985-06-14 | Castanet Raymond | METHOD AND DEVICE FOR CLOSING A DOOR |
AU566903B2 (en) * | 1982-11-26 | 1987-11-05 | Bauer Kaba Ag | Electromagnetic cylinder lock |
FR2537642B1 (en) * | 1982-12-10 | 1991-09-20 | Scovill Sicherheitseinrichtung | KEY AND CLOSING CYLINDER THAT IT OPERATES |
JPS59117901A (en) * | 1982-12-22 | 1984-07-07 | Koyo Seiko Co Ltd | Reservoir tank for power steering device |
JPS59115102U (en) * | 1983-01-25 | 1984-08-03 | 豊田工機株式会社 | reservoir |
JPS60142302U (en) * | 1984-03-01 | 1985-09-20 | 豊田工機株式会社 | resin reservoir |
CH664595A5 (en) * | 1984-03-15 | 1988-03-15 | Bauer Kaba Ag | ELECTRONIC-MECHANICAL FLAT KEY. |
US4616491A (en) * | 1984-05-30 | 1986-10-14 | Genest Leonard Joseph | Key operated electronic lock |
GB8432549D0 (en) * | 1984-12-21 | 1985-02-06 | Lowe & Fletcher Ltd | Lock & key |
GB2169651B (en) * | 1985-01-12 | 1988-04-07 | Snr John Maxwell Mullin | Locking device |
DE3507305A1 (en) * | 1985-03-01 | 1986-09-04 | Fritz Fuss Kg, 7470 Albstadt | DEVICE FOR ACTUATING A RELEASE LOCK |
CH668451A5 (en) * | 1985-10-24 | 1988-12-30 | Bauer Kaba Ag | DEVICE FOR ELECTROMAGNETIC LOCKING ON A LOCKING CYLINDER FOR A MECHANICAL / ELECTRONIC LOCKING SYSTEM. |
GB8529222D0 (en) * | 1985-11-27 | 1986-01-02 | Yale Security Prod Ltd | Keys |
DE3701576A1 (en) * | 1986-02-05 | 1987-10-01 | Bauer Kaba Ag | LOCKING SYSTEM |
FR2596095A1 (en) * | 1986-03-21 | 1987-09-25 | Alain Laborderie | Key and electrical combination lock integrated in a remote monitoring and control system |
KR870009095A (en) * | 1986-03-21 | 1987-10-23 | 존 디. 델폰티 | Keying system |
ES2001949A6 (en) * | 1986-09-09 | 1988-07-01 | Cardese S A | Card operated lock. |
US4937560A (en) * | 1988-08-11 | 1990-06-26 | Nourmand Stephan S | Security system with door deadbolt interlock |
JPH0373702U (en) * | 1990-09-05 | 1991-07-24 | ||
AT397270B (en) * | 1992-06-25 | 1994-03-25 | Evva Werke | Key-operated sliding bolt lock with electrical locking function - uses pivoted catch cooperating with sliding bolt controlled via electromagnet |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1172203A (en) * | 1914-06-19 | 1916-02-15 | Albert B Tenney | Magnetic lock. |
US1270264A (en) * | 1917-09-29 | 1918-06-25 | Int Time Recording Co Ltd | Interlocking door system. |
US2899027A (en) * | 1956-07-02 | 1959-08-11 | Adam Folger | Jail locking devices, and the like |
US3015087A (en) * | 1955-07-26 | 1961-12-26 | Security Systems Inc | Security system |
US3600021A (en) * | 1969-09-15 | 1971-08-17 | Minnesota Mining & Mfg | Lock structure |
US3763676A (en) * | 1972-06-12 | 1973-10-09 | Instrument Systems Corp | Programmable lock system |
US3786471A (en) * | 1971-04-05 | 1974-01-15 | H Hochman | Security maintenance system |
US3785187A (en) * | 1972-06-16 | 1974-01-15 | Folger Adam Co | Institutional security system |
US3837194A (en) * | 1973-01-04 | 1974-09-24 | Unican Security Systems | Pin tumbler lock |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2121301A (en) * | 1936-03-12 | 1938-06-21 | Ractliffe Edwin Merchant | Magnetic lock and key |
US2261868A (en) * | 1939-09-13 | 1941-11-04 | Humberto Arriaza H And Jorge P | Electric safety device for locks |
US3639906A (en) * | 1968-10-14 | 1972-02-01 | Peter R Tritsch | Key identification system having key code control |
-
1973
- 1973-05-19 DE DE2325566A patent/DE2325566B2/en not_active Ceased
-
1974
- 1974-04-05 CH CH484074A patent/CH574034A5/xx not_active IP Right Cessation
- 1974-04-18 AT AT319674A patent/AT344039B/en not_active IP Right Cessation
- 1974-04-19 NL NL7405346A patent/NL7405346A/xx not_active Application Discontinuation
- 1974-05-15 US US470188A patent/US3919869A/en not_active Expired - Lifetime
- 1974-05-15 IT IT22742/74A patent/IT1012384B/en active
- 1974-05-16 JP JP5499274A patent/JPS5725711B2/ja not_active Expired
- 1974-05-17 GB GB2215374A patent/GB1475395A/en not_active Expired
- 1974-05-17 FR FR7417277A patent/FR2229842B1/fr not_active Expired
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1172203A (en) * | 1914-06-19 | 1916-02-15 | Albert B Tenney | Magnetic lock. |
US1270264A (en) * | 1917-09-29 | 1918-06-25 | Int Time Recording Co Ltd | Interlocking door system. |
US3015087A (en) * | 1955-07-26 | 1961-12-26 | Security Systems Inc | Security system |
US2899027A (en) * | 1956-07-02 | 1959-08-11 | Adam Folger | Jail locking devices, and the like |
US3600021A (en) * | 1969-09-15 | 1971-08-17 | Minnesota Mining & Mfg | Lock structure |
US3786471A (en) * | 1971-04-05 | 1974-01-15 | H Hochman | Security maintenance system |
US3763676A (en) * | 1972-06-12 | 1973-10-09 | Instrument Systems Corp | Programmable lock system |
US3785187A (en) * | 1972-06-16 | 1974-01-15 | Folger Adam Co | Institutional security system |
US3837194A (en) * | 1973-01-04 | 1974-09-24 | Unican Security Systems | Pin tumbler lock |
Cited By (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4280118A (en) * | 1977-11-30 | 1981-07-21 | Sachs-Systemtechnik Gmbh | Key-controlled electromagnetic operating mechanism for a lock and the like |
US4270370A (en) * | 1978-11-20 | 1981-06-02 | Oftelie Phil C | Radio operated latch dead-bolting system |
US4288944A (en) * | 1979-06-04 | 1981-09-15 | Donovan Terrence P | Security door |
US4563886A (en) * | 1982-06-07 | 1986-01-14 | Elektronikbau Krippner & Kletzmaier Gesellschaft M.B.H. & Co. | Locking arrangement for securing doors |
US4616865A (en) * | 1984-01-05 | 1986-10-14 | Wormald International, Limited | Security lock assembly |
FR2580025A1 (en) * | 1984-07-18 | 1986-10-10 | Sachs Systemtechnik Gmbh | |
US4734693A (en) * | 1984-07-18 | 1988-03-29 | Sachs-Systemtechnik Gmbh | Switch lock installation |
US4649725A (en) * | 1984-08-21 | 1987-03-17 | Uniqey International Ltd. | Door lock |
US4815773A (en) * | 1987-02-17 | 1989-03-28 | Merrell Richard L | Door lock assembly for freight vehicles |
US4922115A (en) * | 1987-12-28 | 1990-05-01 | Toshiba Glass Co., Ltd. | Fluorescent glass dosimeter |
US4904005A (en) * | 1988-11-18 | 1990-02-27 | Harrow Products, Inc. | Entrance security system |
US4993757A (en) * | 1989-10-13 | 1991-02-19 | Corzine Robert D | Electromechanical locking device |
US5359322A (en) * | 1992-09-28 | 1994-10-25 | Stanley Home Automation | Method and apparatus for interconnected electronic locks |
US5518282A (en) * | 1993-11-30 | 1996-05-21 | Koei Sangyo Co., Ltd. | Locking device for open-close mechanism of a cabinet |
US5682777A (en) * | 1994-01-21 | 1997-11-04 | R. Schmidt Gmbh | Anti-theft device for a motor vehicle |
US5636881A (en) * | 1994-10-21 | 1997-06-10 | Star Lock Systems, Inc. | Automatic latching system with automated unlatching feature |
US5987944A (en) * | 1996-12-14 | 1999-11-23 | Becker Group Europe Gmbh | Locking device |
US6525644B1 (en) | 1998-08-12 | 2003-02-25 | Star Lock Systems, Inc. | Electro-mechanical latch assembly |
US20020024420A1 (en) * | 1998-08-12 | 2002-02-28 | Ayala Raymond F. | Key for selectively allowing access to an enclosure |
US6345522B1 (en) | 1998-08-12 | 2002-02-12 | Star Lock Systems, Inc. | Electro-mechanical latching apparatus |
US20020014950A1 (en) * | 1998-08-12 | 2002-02-07 | Ayala Raymond F. | Method for programming a key for selectively allowing access to an enclosure |
US6867685B1 (en) | 1999-05-10 | 2005-03-15 | Star Lock Systems, Inc. | Electro-mechanical lock assembly |
US20020024418A1 (en) * | 1999-08-11 | 2002-02-28 | Ayala Raymond F. | Method for a key to selectively allow access to an enclosure |
WO2002055382A3 (en) * | 2001-01-16 | 2004-11-11 | A.L.S. Aviation Locking Systems Ltd. | Lock system for aircraft cockpit door |
US20020142831A1 (en) * | 2001-04-02 | 2002-10-03 | Harold Mattice | Method and apparatus for controlling access to areas of gaming machines |
US7758428B2 (en) * | 2001-04-02 | 2010-07-20 | Igt | Method and apparatus for controlling access to areas of gaming machines |
US20040159134A1 (en) * | 2003-02-12 | 2004-08-19 | Manfred Eichenauer | Safety lock |
US20070029813A1 (en) * | 2003-02-12 | 2007-02-08 | Manfred Eichenauer | Safety lock |
US7357429B2 (en) * | 2003-02-12 | 2008-04-15 | K.A. Schmersal Gmbh & Co. | Safety lock |
US20050144991A1 (en) * | 2004-01-06 | 2005-07-07 | Bravo Ramiro H. | Reusable hasp-locking mechanism |
US20070262589A1 (en) * | 2004-11-23 | 2007-11-15 | Control Dynamics Inc. | Latch mechanism for gates and the like |
US7726706B2 (en) * | 2004-11-23 | 2010-06-01 | Control Dynamics Inc. | Latch mechanism for gates and the like |
US7571694B2 (en) | 2007-03-16 | 2009-08-11 | Rick Boerner | Occupancy indication device and method |
US20090255303A1 (en) * | 2008-04-14 | 2009-10-15 | Anatoli Stobbe | Lock cylinder arrangement |
US8151609B2 (en) * | 2008-04-14 | 2012-04-10 | ASTRA Gesellschaft für Asset Management mbH & Co. KG | Lock cylinder arrangement |
US20110259060A1 (en) * | 2008-11-25 | 2011-10-27 | Tobias Leska | Safety switch for generating a system enable signal depending on the position of a movable guard door |
US8814233B2 (en) * | 2008-11-25 | 2014-08-26 | Pilz Gmbh & Co. Kg | Safety switch for generating a system enable signal depending on the position of a movable guard door |
US20130020817A1 (en) * | 2010-02-02 | 2013-01-24 | Juergen Pullmann | Locking apparatus having a tumbler for safety doors |
US8944478B2 (en) * | 2010-02-02 | 2015-02-03 | Pilz Auslandsbeteiligungen Gmbh | Locking apparatus having a tumbler for safety doors |
US20140300116A1 (en) * | 2013-04-03 | 2014-10-09 | Alexander Hellwig | System For Interlocking and Unlocking a Sliding Door |
US10584515B2 (en) | 2016-09-06 | 2020-03-10 | Ellenby Technologies, Inc. | Electronic lock for safes |
US11193310B2 (en) | 2016-09-06 | 2021-12-07 | Ellenby Technologies, Inc. | Electronic lock for safes |
DE102016012611A1 (en) * | 2016-10-19 | 2018-04-19 | Roto Frank Aktiengesellschaft | Closure element of a property and method for operating the closure element |
DE102016012603A1 (en) * | 2016-10-19 | 2018-04-19 | Roto Frank Aktiengesellschaft | Lock system for a closure element of a property as well as closure element of the property with the lock system |
US11639617B1 (en) | 2019-04-03 | 2023-05-02 | The Chamberlain Group Llc | Access control system and method |
Also Published As
Publication number | Publication date |
---|---|
GB1475395A (en) | 1977-06-01 |
DE2325566B2 (en) | 1981-06-04 |
JPS5019599A (en) | 1975-03-01 |
ATA319674A (en) | 1977-10-15 |
FR2229842A1 (en) | 1974-12-13 |
JPS5725711B2 (en) | 1982-05-31 |
IT1012384B (en) | 1977-03-10 |
NL7405346A (en) | 1974-11-21 |
CH574034A5 (en) | 1976-03-31 |
DE2325566A1 (en) | 1974-12-05 |
FR2229842B1 (en) | 1979-02-16 |
AT344039B (en) | 1978-06-26 |
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