Abstract: A closing device for a lock, comprising a pivoting bolt that can be closed in a forward and retracted position with the aid of a locking means. The invented device also comprises a closing element (13) that accommodates the bolt in a forward close position and a locking and unlocking device for said bolt. The locking and unlocking device comprises at least one locking element (17, 18) that can be moved forwards into the movement area of the bolt or retracted, whereby the pivoting bolt is secured in a forward position against closure in a retracted position or retracting from the forward close position. When in a locked position, mechanical door-side interventions on the locking mechanism of the locking cylinder or the pivoting bolt-lock do not result in a closing movement of said bolt.

Abstract: A door lock able to be unlocked by a key or a remote controller, has a body and a bolt provided inside the body. The bolt has a recess defined therein, and a tooth formed at a bottom side of a first end thereof. Two upper sheets and two lower sheets are respectively provided in an upper portion and a lower portion of the recess. Four links are pivotally connected end to end by four pivot pins to form a rhombic structure and respectively provided between the upper sheets and between the lower sheets. Two torsion springs are provided between the sheets and respectively mounted on two transversal pivot pins and pushing against two longitudinal pivot pins. An upper cam is mounted at an upper side of the bolt. A lower cam is mounted at a lower side of the bolt. The upper cam and the lower cam each have two tongues for pushing the upper sheets and the lower sheets inwards, and pushing the bolt to transversally move.

Abstract: A power supplying device for a door lock has a body, a dead bolt and a latch bolt installed on the body. A tongue is formed at a distal end of a latch bolt. A resilient member is provided between a disk and a flange on the latch bolt. An iron core is movably installed on the body and has a first coil connected with a circuit board by a first wire. The iron core is electrically connected with the storage battery. An inductor formed inside a strike plate has a coil for receiving the iron core. The coil is electrically connected with a transformer by a wire, and the transformer is supplied with AC. Whereby, an induced current is generated in the coil by the mutual inductance between the iron core and the inductor to charge the storage battery for supplying power to the motor.

Abstract: A mortise lockset incorporates an electrically actuated clutch within the lock case. The clutch selectively engages one latch operator to permit access through a door equipped with the lockset. The lockset further includes a key rotatable cam for retracting the latch. The lockset includes a lock bar that permits retraction of the latch by means external to the lockset. An extended throw deadbolt-like latch is held in a retracted position by an auxiliary latch and hook until released by retraction of the auxiliary latch. The latch incorporates a recessed roller in the projected end of the latch to facilitate latch deployment.

Abstract: An electrically operated, strong, security system comprising a lock with remote control installed in a wall adjacent to a door frame or under a door. The lock comprises at least one rod which extends into the door when the door is closed and in a locked state. In an unlocked state an actuator retracts the rods from the door, back into the door frame or into the floor. The security lock system provides a manual control for the lock inside a house or building along with indicator lights showing the lock status. An emergency DC battery provides power for the security lock if there is a primary power outage. A remote control locks all doors in the house simultaneous that have such a security lock, and the remote control unlocks only the door or doors selected to be unlocked.

Abstract: A locking mechanism for engaging a strike includes a frame having a receptacle configured to receive the strike and a locking pin reciprocally mounted to the frame for reciprocating between a retracted position and an extended position. The locking pin is configured for mating with the strike when the locking pin is disposed in the extended position. A drive link extends from the locking pin and a motor is provided for driving a drive shaft. A spring shaft has one end engageable with the drive shaft. A coupling is disposed between a second end of the spring shaft and the frame. The drive link is configured to engage individual coil surfaces of the spring shaft during rotation thereof to drive the locking pin towards the retracted or extended position.

Abstract: The invention relates to a closing device for a movable element, in particular for a door, a flap or the like, of a vehicle, having a rotary latch which arrests or releases a closing bolt, it being possible for the rotary latch to be arrested by a detent pawl to effect a closed position of the element and it being possible for the detent pawl to be driven by an actuating drive for the purpose of releasing the rotary latch to effect an opening position of the element, the invention making provision for means which control the actuating drive in such a manner that after the actuating drive has been driven from a rest position in the direction of a working position for the purpose of releasing the rotary latch it is returned in a controlled manner from the working position into the rest position.

Abstract: The invention concerns a multipoint electric lock, comprising at least two mutually spaced locking devices, a rod assembly directly connecting the locking devices together, integral with a housing, which slides in the housing, guided thereon by means of the locking devices, an electric motor constituting an actuating device, integral with the housing, and a transmission mechanism which ensures the transmission of movement between the actuating device and the rod assembly.

Abstract: The present invention is a remote control lock device that is used with any type of rotating lock typically associated with residential homes, offices, or the like. This device can be a singular unit utilized with a dead bolt mechanism, a key operated lock or a combination of a dead bolt mechanism and key operated lock. The locking device comprises a gear assembly having an adapter coupled to the gear assembly and the conventional lock mechanism. A motor assembly is coupled to the gear assembly. Activation of the motor assembly will cause the rotation of the gear assembly. Rotation of the gear assembly will force the adapter to move, causing the conventional lock mechanism to rotate to a desired position.

Abstract: A keyless locking system includes a housing in a generally rectilinear configuration having a plate with peripheral edge walls to form an open housing there between. A rotatable assembly is secured to the front wall and includes a visible rotator extending inwardly from the front wall and a cylindrical shaft extending through the front wall. A C-shaped channel member extending interiorly from the front wall to encompass and contact the sides of the deadbolt. A gearing assembly includes a large gear coupled to the channel member and a smaller gear and an intermediate gear whereby rotation of the intermediate gear will rotate the smaller gear and then the larger gear to rotate the channel member and deadbolt to lock and unlock the door. A motor within the housing with an associated battery drives the intermediate gear. An electronic assembly effects the driving of the motor and intermediate gear in a first direction and then a second direction.

Abstract: A deadbolt locking actuator includes a housing mounting a reversible motor. A worm is fitted on an output shaft of the motor and meshed with a worm gear. A rotary arm is provided outside of the housing and coupled to the worm gear. A pin on the rotary arm is received in an elongated slot of a link connected to a manual locking lever of a door latch. A control circuit operates the drive unit and link between deadbolt and non-deadbolt positions.

Abstract: A method and apparatus for inhibiting unauthorized access to or utilization of a container or other protected device wherein a free standing lock or other control is provided, the state of which may be varied in response to receipt of a dynamic non-predictable code. The device may be a lock which when in a first state locks the container or other device, but which may switch to an unlocked state in response to verification that an authorized dynamic non-predictable code has been received. Alternatively, the control may be a mechanism integrally formed with the protected device which, when in a first state, inhibits and prevents normal operation of the device, permitting such operation when the mechanism is in its second state. The non-predictable code may be produced by a token carried by an authorized user, may involve query response operations, or may otherwise be generated in manners known in the art.

Abstract: An electrically operated, strong, security system comprising a lock with remote control installed in a wall adjacent to a door frame. The lock comprises rods which extend into the door when the door is closed and in a locked state. In an unlocked state an actuator retracts the rods from the door, back into the door frame. The security lock system provides a manual control for the lock inside a house or building along with indicator lights showing the lock status. An emergency DC battery provides power for the security lock if there is a primary power outage. A remote control locks all doors in the house simultaneous that have such a security lock, and the remote control unlocks only the door or doors selected to be unlocked.

Abstract: A Remote Controlled Door Lock System for securely retracting a locking bolt from engagement to a striker plate disposed in a door jamb. The inventive device includes a solenoid for retracting the lock bolt from engagement to the striker plate, a first microcontroller and associated circuitry for generating and transmitting a first signal representing an access code, receiving and decoding a second signal representing a random value and generating and transmitting a third signal representing a unique alteration of the random value, and a second microcontroller and associated circuitry for receiving and decoding the first and third signals, generating and transmitting the second signal and for generating a fourth signal operable to energize the solenoid.

Abstract: A system 10 for remote operation of a deadbolt lock locks or unlocks a deadbolt 22 associated with a door 14 with a remotely-operated actuator 28 that is operationally coupled to deadbolt 22. The system 10 can convert an existing manually operated deadbolt 22 into a remotely operated deadbolt by replacing an existing turnpiece associated with the manually operated deadbolt with a remotely operated actuator 28. Alternatively, the system 10 can lock door 14 of building 12 by mounting system 10 on or in either door 14 or building 12. System 10 can cooperate with other security systems in the building, including a siren 34 or a window sensor 46.

Abstract: A kit for retrofitting a door with a remotely controllable locking mechanism having a combination key-operated deadbolt lock and door knob latching lock for a door. A housing for the operating parts is insertable in a mortised pocket or cavity in the latch edge of the door or it may be attached to the exterior surface of the interior well of the door. The electronics to operate the mechanism sends a signal to a receiver installable in the wall near the locks. Power is supplied to solenoids to simultaneously activate the locking and unlocking mechanisms of the deadbolt and the door knob latching lock when the kit is assembled in the door. Manual key overrides are provided for the deadbolt and for the latch.

Abstract: A motorized lock assembly includes a lock bolt mounted in a door and having a rotary core containing a first slot, an inside assembly having a casing attached to the inside of the door, and a transmission mechanism having a rectangular block rotated by a drive device, and an extension post containing a second slot aligning with the first slot, and an outside assembly attached to the outside of the door and having an elongate rotor in turn extending through the first slot and the second slot such that the rotary core rotates in conjunction with the extension post, whereby the rectangular block can be rotated so as to rotate the extension post and the rotary core, thereby extending a dead bolt outward from the lock bolt.

Abstract: An electrically actuated power door lock actuator which provides simplicity, long term reliability, minimal mechanical complexity and solves the problem of back driving when the door lock mechanism is manually actuated.

Abstract: An electrical circuit that includes a ferrous plunger operated by electrical coils and pulses current. One end of the plunger extends and retracts into contact with an adjustable latch such that only one moving part is required and only a small amount of electrical energy. Selectively activating the coils throws the plunger between the locked and unlocked positions. The circuit includes provisions to open the lock in the event of power failure. The plunger mechanism is mounted on an easily installed housing that, with the latch mechanism, has hardware for accurate alignment and installation. In one embodiment, a series of plungers can be operated by a wireless remote-control device. In another embodiment, the series of plungers can be operated by a switch mounted on a wall. In yet another embodiment, the series of plungers can be operated only after entering a four digit code into a programable key pad unit.

Abstract: A keyless entry system for use with conventional locksets is provided. The system employs a battery operated motor and a gear train mounted on the inside of a door. The motor and gear train rotate the inside handle of the lockset in the same manner as a user would rotate the handle to unlatch the door. Misalignments between the gear train and the lockset are accommodated by a pawl which connects the gear train to the connecting shaft between the lockset's inside and outside door handles. The electric motor is activated by a control system responsive to a RF signal generated by a transmitter pendant carried by the user. The RF signal includes a user code, and the control system has a learning mode and an operating mode, with the learning mode serving to record a list of one or more authorized user codes and the operating mode employing that list to determine if the door should be unlatched in response to a particular user code.

Abstract: The charge on a capacitor is supplied by a manual generator in a self-powered lock. The capacitor retains a reduced level charge after completion of the operation of the electronic lock controls that may serve as a capacitor pre-charge. The pre-charge reduces the amount of manual input to the generator required. The drain of the electronic control circuitry on the capacitor is disconnected responsive to a microprocessor command at the completion of microprocessor operations. The disconnection may occur at a higher level of charge voltage on the capacitor when the control is from the microprocessor without having to wait for charge decay to reach a disconnect or power down level based on charge voltage level.

Abstract: A door interlock includes a pivot arm having a door lock position, a door unlock position, and a latch recess. A latch has a door lock position against the pivot arm, a door unlock position releasing the pivot arm, and a latch projection. A latch operating solenoid is the only solenoid mechanically linked to the latch. A capacitor is supplied by a power supply and is arranged to pulse the latch operating solenoid without pulling down the power supply. The pulsing of the latch operating solenoid by the capacitor causes the latch operating solenoid to move the latch projection of the latch into and out of the latch recess of the pivot arm so that a door is locked and unlocked.

Abstract: A lock (10) having inductive key detection includes a lock mechanism (14). A detector member (20) is movably disposed proximate the lock mechanism (14) such that the detector member (20) moves when a key engages the lock mechanism (14). The detector member (20) has a magnetic portion (24). An antenna (30) is disposed proximate the detector member (20) such that movement of the detector member (20) induces a signal in the antenna (30). A detector (42) is coupled to the antenna (30) and is operable to detect the signal in the antenna (30).

Abstract: An electronically operated lock has a latch mechanism which is operable by a rotatable spindle. The spindle can be rotated manually either by an inside turn lever or a key operated outside plug or rotated electronically. A pinion is secured to the spindle and a slider supported for vertical displacement has a vertical rack which cooperates with the pinion. The slider has vertically separated upper and lower control surfaces and a rotatable wheel gear has an eccentric axially extending finger located intermediate the upper and lower control surfaces. The wheel gear is driven by a single direction motor through gearing.

Abstract: A remotely controllable locking mechanism for a combination key-operated deadbolt lock and door knob latching lock for a door. A housing for the operating parts is inserted in a mortised pocket or cavity in the latch edge of the door. The electronics to operate the mechanism sends a signal to a receiver installed in the wall near the locks. Power is supplied to solenoids to simultaneously activate the locking and unlocking mechanisms of the deadbolt and the door knob latching lock. Manual key overrides are provided for the deadbolt and for the latch.

Abstract: A motor driven locking mechanism including a door hingably coupled to a door frame at a first side edge thereof, the door having a horizontally orientated channel with a first open end situated on a second side edge of the door opposite the first side edge and a second closed end and a door knob rotatably coupled to the door about an axis which extends above and perpendicular to the channel; a first locking mechanism including a locking rod for slidably inserting within the channel, a strip gear longitudinally situated on a top edge of the locking rod, and a motor located adjacent the closed end of the channel having a rotor extending therefrom with a bevel gear coupled thereto, the bevel gear in threaded engagement with the strip gear for situating the locking rod in an extended orientation with the locking rod engaged with the door frame upon the receipt of a lock signal and a retracted orientation with the locking rod residing only within the channel upon the receipt of an unlock signal; and actuation mech

Abstract: A retrofittable remote controlled deadbolt operating system is provided for locking and unlocking a deadbolt lock. The system has a transmitter that activates a receiver located on the actuator of the lock to engage a motor which is connected to gears that are in turn connected to an adaptor that mates with the actuator. The adaptor transfers the force of the motor in the necessary direction for operating the lock. The system also has a panic alarm siren that can be activated by the remote control. The remote controller can also be used to operate an existing garage door opener, and to turn on lights.

Abstract: Described is a preferred wireless system for unlatching the door of a residence. The system includes a solenoid/strike plate assembly controlled by a receiver unit which in turn is controlled by RF or other electromagnetic signals. The preferred system is readily retrofit into existing residential structures with a single bore into the door jamb into which the solenoid/strike plate assembly is mounted, and includes a minimum of moving parts.

Abstract: A lock assembly comprising a casing, a lever rotatably attached to the casing, the lever having a spindle attached thereto, a motor secured to the casing, the motor having a shaft, a substantially cylindrical member attached to the motor shaft and having a helically extending groove, and an interfering member threadedly and non-rotatably engaged with the helically extending groove of the cylindrical member. The interfering member moves between a locked position and an unlocked position. The interfering member moves into the locked position to prevent rotation of the lever when the motor shaft rotates in one direction. The interfering member moves into the unlocked position to allow rotation of the lever when the motor shaft rotates in an opposite direction.

Abstract: A door lock device having an anti-theft mechanism comprises a motor adapted to change a locking lever into a locking position by a normal rotation thereof in a predetermined amount, to change an anti-theft member into an anti-theft position by a continuous normal rotation thereof over the predetermined amount, and to return the anti-theft member to an anti-theft canceling position by a reverse rotation thereof. A controller has a locking operation of changing the locking lever into the locking position by using the motor, an anti-theft operation of changing the anti-theft member into the anti-theft position by using the motor, and an anti-theft canceling operation of changing the anti-theft member into the anti-theft canceling position by using the motor. If the anti-theft position of the anti-theft member is detected after performing the locking operation, the controller performs the anti-theft canceling operation.

Abstract: The invention is a motorized linkage for engaging a thumb piece in a door mechanism. The device has an exterior lock assembly with a small battery cell and combination lock. Proper entry by a user of a security code allows the battery to operate a small motor within the exterior lock assembly. The small motor manipulates a cam-plunger which moves an actuator pin into a thumb piece. The user applies a force on to the thumb piece. This force is transmitted by the thumb piece to a latch engagement mechanism by the actuator pin. The latch engagement mechanism operates the door latch.

Abstract: A locking device is disclosed, comprising a locking mechanism having a locked position and an unlocked position, a hollow plunger member having a central axis, the hollow plunger member being engaged with the locking mechanism to move the locking mechanism alternatively into the locked and unlocked positions upon reciprocating linear motion of the hollow plunger member in first and second directions along its central axis, and a motor having a shaft disposed coaxial with the central axis of the hollow plunger member is disclosed. In one embodiment, the locking device further comprises a spring having first and second ends, the first end being fixed to the motor shaft, and a pin fixed to the hollow plunger member for engaging the second end of the spring such that when the motor shaft rotates in a third direction the hollow plunger member moves in the first direction and when the motor shaft rotates in a fourth direction the hollow plunger member moves in the second direction.

Abstract: Electric safety-lock consisting of a motor (3) which by means of movement reduction gears (4, 5) drives a worm screw (6) axially mounted on the driven wheel (5). A slider (8) is keyed onto the worm screw (6) on which the mobile lock studs (9) entering the holes (10) in the locking box (1) are fastened. A mobile rack (13) is mounted on the slider (8); the rack (13) may be operated in case of emergency by a gear wheel (14) meshing with a cylinder or sprocket latch (17) and functioning when using a key (15) or knob. An electric circuit provided with sensors (24, 25, 26) provides for remote control (34) of the door lock via opening (A) and closing push-buttons (C). The safety-lock may also be equipped with an alarm system.

Abstract: A remote-controlled lock device including a striking plate fixed to one door pillar (or the trunk) of the car, a mounting plate fixed to the corresponding door (or the trunk lid) of the car, a casing fixed to the mounting plate, a reversible motor, a transmission device coupled to the reversible motor, a lock bolt disposed in the mounting plate and moved by the transmission device between the locking position to lock the door (or the trunk lid) and the unlocking position to unlock the door (or the trunk lid), a two-way switch automatically triggererd to cut off power supply from the reversible motor when the lock bolt is moved to the locking or unlocking position, a remote controller, and a control circuit controlled by the remote controller to turn the reversible motor forwards or backwards.

Abstract: A central lock system for a motor vehicle having a trunk door and a gas-filler door, has respective latches at the trunk and gas-filler doors movable between locked and unlocked positions corresponding to locked and unlocked conditions of the respective doors and an actuator adjacent the trunk latch having a single output member displaceable between an actuated and an unactuated position and a motor connected to the member for displacing same between the respective positions. Respective trunk and gas-filler links are connected to the respective latches and are both connected to the member. A controller is connected to the motor for actuating same and thereby simultaneously moving the trunk and gas-filler latches between the locked and unlocked positions.

Abstract: A deadbolt locking system for use on existing locks having a bolt longitudinally moveable between extended and retracted positions by a manual operator mechanism. The system includes an engaging member defining a torque blade key that telescopes a torque blade that extends transversely through a crank hub of the bolt moving mechanism and to a thumbturn. An actuator having a moving member that moves between extended and retracted positions is operatively connected to a connecting rod that is also connected to a torque blade key. The actuator is connected to a signal receiver that receives a signal sent by a transmitter. Upon receiving the signal, the receiver supplies current to the actuator to energize the actuator to move the moving member and connecting rod. This movement rotates the torque blade key to rotate the torque blade that rotates the bolt moving mechanism to move the bolt longitudinally between its extended and retracted positions.

Abstract: An improved structure for an actuator for the lock mechanism of a latch assembly, such as a vehicle door latch assembly. The actuator includes a housing having an output arm moveable relative thereto between a lock position and an unlock position, to lock and unlock, respectively, the latch mechanism. An output gear having a pawl formed thereon is rotatably mounted adjacent the output arm. The output gear is adapted to rotate about an axis to cause the pawl to engage a first one of the pair of drive surfaces to urge the output arm toward the lock position. The output gear may be rotated in a second direction to cause the pawl to engage the other of the pair of drive surfaces to urge the output arm toward the unlock position. The output arm is coupled to a blocking member adapted for movement relative thereto. The blocking member may be moved to a blocking position when the output arm is in the lock position.

Abstract: An electronic combination lock is provided with and incorporates the enhanced feature of covert entry detection and notification. Whenever the bolt of an electronic lock provided with this enhancement is retracted to its withdrawn or unlocked position and whenever the lock has not received an authorized combination enabling the movement of the bolt, movement of the bolt is detected and the electronics of the lock is powered for a time sufficient to record an indication of the covert entry in its non-volatile memory. Upon normal operation at a subsequent time, the indication of covert entry is read from the non-volatile memory and a visual indication is displayed to the operator to inform the operator that covert entry has occurred.

Abstract: A motorized electronic lock is disclosed including an electric motor, a screw powered by the motor, a nut threadedly engaged with the screw and having two extending arms projecting therefrom, one of which arms is a cam follower arm that rides along a cam surface on a cam bracket, and the other of which is a locking arm that is engageable with a slot in a bolt in order to provide a dead-bolting feature for the bolt, and a relocking spring which is either held out of the way of the bolt by a downwardly extending leg of the cam bracket or is biased to a position behind the bolt, blocking the bolt from being able to retract.

Abstract: The invention relates to an electromotive actuator with a housing for a central door locking system of a motor vehicle having a first slide adjustable by a first electric motor between two end positions. The first slide can be connected with a door lock of the motor vehicle independently of the end position and is preferably decoupled from the electric motor in the end positions, so that the first slide is manually adjustable between its end positions. Such an electromotive actuator is provided with a theft protection capability in the sense that, after a windshield of a motor vehicle is smashed in, an unlocking of the door by the inside locking handle is no more possible because the parts of the actuator are not actuated by operating the inside locking handle. Finally, an unlocking operation initiated from the outside is possible when the theft protection is put into operation.

Abstract: A lock system adapted to be used with both conventional mortise and cylinder locks includes an electronic socket to removably receive a button-like metal casing having an integrated circuit therein. The socket transmits code to a microprocessor based circuit which control a rotary two-directional motor. In one embodiment, the motor turns a cam which lifts, or lowers, a frame-like slide having a plunger which fits into a cavity of the cylinder to lock the cylinder.

Abstract: A lock assembly has a main lock housing, a bolt movable in the housing between a locked position projecting from the housing and an unlocked position largely recessed in the housing, a key-operable mechanism having an actuator movable by turning of an appropriately bitted key in the mechanism, and a linkage between the actuator and the bolt for displacing the bolt by means of the actuator. A secondary housing is provided adjacent the lock housing and an actuator element coupled and movable with the linkage extends from the lock housing to the secondary housing. The element moves in one direction relative to the secondary housing on movement of the bolt from the locked to the unlocked position and in the opposite direction on movement of the bolt from the unlocked to the locked position. An electric motor on the secondary housing connected to the element is energizable for displacing same in both directions and thereby also displacing the bolt between its positions.

Abstract: A remote control car deadbolt lock includes a lock housing (14) mountable between a car door and car door facing which includes a locking mechanism (24). Receiver assembly (12) mounts within the car door or door facing opposite the lock housing. Locking mechanism (24) includes deadbolt (26) which mounts to reciprocate between a locked position (34) and unlocked position (106). Locking mechanism (24) also includes solenoid (60) and spring actuator comprising spring (44), cam (46) and select mechanism (52). Solenoid (60) causes deadbolt (26) to reciprocate in response to an electrical signal. Spring actuator (25) controls the locked and unlocked position of deadbolt (26). Receiver assembly (12) receives deadbolt (26) when deadbolt (26) is in locked position (34), thereby causing deadbolt (26) to lock car door to car door facing. A remote actuator, in the preferred embodiment, includes a transmitter (108) and receiver (112) for remote control of locking mechanism (24).

Abstract: A high security locking device is disclosed especially adapted for use as a vehicle anti-theft and passenger security system. In one embodiment, the device comprises a frame, a bolt and a motor driven bolt actuator. The bolt resists slim-jim tampering and may be instantly locked and unlocked by means of a suitable switch. In a second embodiment of the present invention, a high security locking device is disclosed which comprises a frame; a coaxial slide bolt, having an inner core and an outer sheath, slideably positioned within the frame; a cylinder assembly positioned within the frame; an outer sheath positioning means coupled to and operated by said cylinder assembly; and a motor driven bolt actuator. The outer sheath is extended and withdrawn by means of the outer sheath positioning means controlled by a keyed cylinder mounted upon the outer surface of a door and optionally by means of a latch located within the vehicle. The inner core is operated by means of a motor driven bolt actuator.

Abstract: A refrigerator controller which can positively lock and unlock a door thereof in accordance with a command signal from a host-computer connected therewith. The refrigerator controller includes a power supply voltage indicating device. A DC power supply is charged by a DC power source and energizes a door lock mechanism activating device to lock and unlock the door. DC voltage generated by the DC power supply rises as it is charged by the DC power source. The door lock mechanism activating device can be energized to positively lock and unlock the door by being fed with a predetermined lower limit voltage. Only when the DC voltage generated by the DC power supply is no lower than the predetermined lower limit voltage is the door lock mechanism activating device energized by the DC power supply to lock and unlock the door of the refrigerator in accordance with the command signal.

Abstract: A remote control locking device is provided for a door of a motor vehicle, which consists of a remote transmitter outside of the motor vehicle for transmitting a radio signal. A receiver is carried within and is electrically connected to the electrical system of the motor vehicle for receiving the radio signal from the remote transmitter. A piston is electrically connected to the receiver and is mounted within a door jamb of the motor vehicle adjacent the side of the door. A dead bolt plunger is axially aligned with and projects outwardly from the piston for a relative lineal movement between extended and retracted positions upon operation of the remote transmitter, so that the dead bolt plunger can engage with the side to lock the door and disengage from the side to unlock the door.

Abstract: A remotely controlled door lock for a dog cage is provided. The door lock includes a pair of solenoids connected to a latch bolt, and a main controller which receives a radio frequency control signal from a remote radio transmitter. The main controller decodes the signal and sends it to one of the solenoids to retract the latch bolt from engagement with the cage door, or extend it into engagement therewith.

Abstract: A rim lock having a housing within which is disposed a solenoid with anvil and a plunger movable within the solenoid being reversible and interchangeable within the housing and using interchangeable bolt assemblies to provide for Fail Safe or Fail Secure or Mechanical applications. This invention also accommodates in a compact manner the use of the rim lock for both inswing and outswing door applications and from narrow to large stile door configurations.

Abstract: A security system for a gaming device prevents a door on the gaming device from being opened during a power failure so as to prevent tampering with the controls of the gaming device when no power is supplied to the system. When power is supplied to the system, a processor logs the time of occurrence of detected door openings in a nonerasable programmable memory so as to provide a record thereof. The information is stored in a sequential manner in accordance with the time of occurrence of the door opening events so that the microprocessor can verify the information stored. If any anomalies are detected in the stored information, the microprocessor 10 can prevent operation of the gaming device or generate alarms.

Abstract: A security system includes a microcomputer with an auxiliary read-only memory and a key device including a similar read-only memory, each of the read-only memories containing corresponding pluralities of corresponding binary combination codes. Under the control of the microcomputer the codes are read and compared. If the combination and the sequence do not compare, the system will not unlock and an alarm will be generated. The read-only memories are of the programmable type, so that changes in the combinations and sequences can be accomplished easily. A plurality of visual indicators and an audible alarm provide the user and personnel in the secure area with information concerning the status of the system.