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8687341 Control circuit for electric unlocking devices using actuating solenoids  
A system and method is provided for an enhanced and user friendly control circuit for an electric unlocking device, such as for example, an electric door strike or other unlocking devices...
7545620 Access protection device for a prohibited area  
The invention relates to an access protection device for a physical area which can be switched on and off in a controlled manner, comprising a fixed part, at least one movable part for closing an...
7522025 Switchgear with a switching device and an electronic component as well as a supplementary electrical circuit for the switchgear  
A switchgear comprises a switching device, such as a relay, with a switching mechanism. A printed-circuit board that is provided with at least one electronic component is electrically connected to...
7051561 Electronic lock  
A mortise lockset apparatus (10) that includes a retractable bolt (20) movably supported within a case (12). A handle (18) is pivotally supported on a hub (16) supported in the case, the hub being...
6771479 Method and device for controlling a selection device with solenoids for a weaving machine  
Device for energizing a number of coils of a hook selection device for a weaving machine includes an electrical power supply source connected to the coils and a regulating device for regulating...
6643112 Semiconductor switch-assisted electromechanical relay  
An electromechanical relay including a mechanical displacement electrical contact and a transistor parallel-connected with the electrical contact. The contact is closed for a voltage V...
6418003 Control methods for electromagnetic valve actuators  
A method for initializing an actuator valve (12) and controlling the valve (12) using current command control (100) or voltage control including an estimate of back emf (200). A series of low...
6282931 Electrically operated actuator and method  
A method is provided for retrofitting an existing dead-bolt assembly with an electrically operated actuator (12, 112, 212, 312, 800). The electrically operated actuator automatically operates the...
6259362 System for conveying vehicle status information upon exit from a vehicle  
A system (10) for a vehicle (12), wherein the system includes transmitter components (26, 28), located at the vehicle, that are operable to send communication that conveys a vehicle system status....
6181256 Remotely operable switch actuator and method for retrofitting a manually operated enclosed electrical disconnect switch  
A remotely operable switch actuation module for retrofitting a manually operated disconnect switch. The switch actuation module includes a linear operator which produces a linear movement in...
6169650 Single access control system and method  
A way of controlling access to golf cart starter keys, (referred herein as user-keys) is described. A specially coded and specially shaped key, the user-key is given to a golf cart renter once an...
6137409 Computer anti-theft system  
A computer anti-theft system that includes a remote transmitter unit carried by the user, a dongle that physically attaches and selectively locks onto the parallel port on an existing computer,...
6111504 Electronic equipment security and recovery system  
The present invention describes an apparatus and method for an electronic equipment security and recovery system in which the disconnection of electrical power and subsequent movement of the...
6049448 Security system for roll down doors  
A security system with a driver circuit for energizing a solenoid actuated locking device. The circuit can include a microprocessor, a battery power supply, a boosting circuit and an energy...
6046681 Remote controlled door lock system  
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...
5999095 Electronic security system  
An access control unit for an electrified door lock also toggles the state of an associated alarm. The unit is arranged to unlock the door only temporarily, but the alarm state is not toggled...
5979199 Electrically operated actuator  
An electrically operated actuator (12, 112, 212, 312, 800) automatically operates dead-bolt assemblies and other locks, while preserving manual operation of the locks. The actuator assembly has...
5940001 Transmission and reception system for controlling locking/unlocking operation of key  
A transmission and reception system for controlling a locking/unlocking operation of a key includes a transmission section for transmitting a control signal having a predetermined frequency for...
5841363 Locking system especially for automobiles  
A locking system for an automobile, comprises an operating key, an operating key receptacle and an associated operating unit. The operating key and the operating key receptacle have first means...
5815083 Process for entry of a confidential piece of information and associated terminal  
With confidential information being composed of authenticating signs which belong to a first series, a second series of signs or designating symbols is defined, the first and second series of...
5796329 Immobilizer and method for initializing the immobilizer  
In an immobilizer and a method for initializing the immobilizer, a multiplicity of control devices, all of which must correctly signal back their identification code word before the vehicle can be...
5781399 Energy efficient control circuit for solenoid actuated locking device  
The present invention provides a driver circuit for energizing a solenoid actuated locking device. The circuit is adapted to include a microprocessor, a battery power supply, a boosting circuit...
5774066 Programmably operable system for the delayed locking/unlocking of a security installation  
A programmable activation system for the timed locking/unlocking of a security installation includes at least one activation module (10a, 10b) for unlocking an opening element (4) and apparatus...
5632169 Self powered electronic combination lock having comprehensive monitoring of power levels for various functions  
A user of a self-powered electronic combination lock rotates an outer dial to cause generators to generate energy for storage in a capacitor bank. The user then rotates an inner dial to cause a...
5614883 Automotive opto-electric starter interlock  
An automotive opto-electric starter interlock for use in a motor vehicle for the purpose of preventing the engine from being remotely started unless the transmission is in neutral. The starter...
5559493 Automobile anti-theft device  
An automobile anti-theft device connected to the electrical system and fuel line of a vehicle. A control unit is positioned proximate to an operator of an automobile. The control unit has a first...
5552777 Mechanical/electronic lock and key  
A mechanical lock and key, which may have a conventional cylinder with mechanical bittings, includes an electronic access control feature for preventing opening of the lock, even with the proper...
5508691 Self-contained electronic lock with changeable master and slave codes  
An erasable circuit provides a nonvolatile memory for holding key codes in at least two memory locations. At least one of these locations is a master key code address. "Master key" here means a...
5508569 Battery driven equipment having a locking mechanism  
Disclosed herein is a battery driven equipment including an equipment body, a battery pack detachably mounted in the equipment body, a locking mechanism for releasably locking the battery pack...
5507162 Eurocylinder-type assembly for electronic lock and key system  
A `Eurocylinder` configuration for an electronic lock and key system has a plug fitted into a main body housing which is readily mounted into a mortise of standardized dimensions. The plug has a...
5499157 Multiplexed electronic fuel injection control system  
An electronic fuel injection control system having a plurality of fuel injection valves, wherein each valve is operated by an electromagnetic solenoid. The control system includes at least one...
5430600 Latching relay control circuit  
A latching relay control circuit comprising a latching relay pulse generator circuit and a relay coil drive circuit, the latching relay pulse generator circuit receiving relay control signals and...
5402303 Remotely-powdered and remotely-addressed zero-standby-current energy-accumulating high-power solenoid drivers, particularly for systems that are micropowered  
One or more loads, commonly solenoids, requiring a high-power drive--typically 500 ma. 7.5 v.d.c.--are selectively actuated by energy that is accumulated over time--typically over several hundred...
5359322 Method and apparatus for interconnected electronic locks  
A group of cabinets or other units each have a solenoid operated lock controlled by an electronic lock accessible by one or more electronic keys. The locks are linked together in a chain by power...
5351042 Lock, key and combination of lock and key  
A battery-less electronic cylinder lock comprises an electromagnet or other electrical release mechanism controlled by an electronic circuit. A cooperating key comprises a battery and a code...
5347267 Electronic lock reset system and method  
A group of cabinets or other units each have a solenoid operated lock controlled by an electronic lock accessible by one or more electronic keys. The locks are linked together in a chain by power...
5337588 Electronic lock and key system  
An electronic key and lock system, particularly useful for solenoid-operated locks employs a key that can operate electronically and mechanically. The key is mechanically polarized with its blade...
5309743 Door unlocking device  
An object of this invention is to provide a door unlocking device adapted unlock a door by transmitting a signal in the air through a signal transmitter, which can unlock the door even when the...
5268811 Method of controlling and controller for a refrigerator  
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...
5252960 Secure keyless entry system for automatic garage door operator  
A secure, keyless secondary transmitter unit for use in an automatic garage door operator transmits a code set by a code setting device as modified by digits entered at a keyboard. A controller...
5223829 Electric locker apparatus with automatic locker box designation device  
An electric locker apparatus to be installed at a public space, such as entrance hall of a condominium, includes a plurality of locker boxes of at least one type, each having a door with an...
5218338 Coded anti-theft system  
A coded anti-theft system of the present invention employs a keyswitch board, a number of relays and timers, and a number of peripherals including a first sensing device, a second sensing device,...
5206782 Surge lock power controller  
A power controller for electric locks which draw large startup current surges which controls and manages the energy of a pair of storage batteries to reliably operate such electric locks and...
5153561 Secured valuable box for beach goers  
A container, e.g., case or bag, has an internal compartment with an access opening that is entirely closed with a cover having a clasp that cooperates with a latch of an electronic lock carried on...
5132661 Security system employing optical key shape reader  
A security system which employs an optical key shape reader to photoelectrically derive an electrical signal from a shape characteristic of a key is disclosed. The system provides heightened...
5117122 Integrated outlet for communication and electrical power transmissions with noise reducing characteristics  
The present invention relates to an integrated outlet that allows supply of AC power to an outlet receptacle when certain conditions are satisfied. The integrated outlet contains separate modules...
5107258 Wireless remote control high security system permitting the opening or theft-proof closing of relays actuating systems such as locks  
A wireless remote control high security system permits the opening or theft-proof closing of relay actuating systems such as locks. The system comprises an assembly of remote control security keys...
RE33873 Microcomputer controlled combination lock security system  
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...
5086288 VATS interrogator accessory  
An accessory for use with a vehicle, equipped with a vehicle anti-theft system, and an interrogator device for the anti-theft system. The accessory includes a connector arrangement for...
5083122 Programmable individualized security system for door locks  
A battery-powered security device for controlling access through a door by authorized uses which includes a lock operated by a low power driven motor; a keyboard by which a user enters codes or...

Matches 1 - 50 out of 284 1 2 3 4 5 6 >