Permutation Patents (Class 340/543)
  • Patent number: 4408251
    Abstract: A tamper-resistant security system for and method of operating and installing the same are disclosed for electronically controlling an access device such as a garage door. A manual keyboard encoder mounted exteriorly on a garage door jamb is operative for generating coded electrical signals, including a predetermined sequence of coded electrical signals required to move the garage door from a closed to an open position. A control-processor unit mounted within the interior garage area is operative for detecting the coded signals, and for moving the garage door from the closed to the open position in response to detection of the predetermined coded signal sequence. A single pair of electrical conductors interconnects the encoder and the control-processor unit. The transmission of the predetermined coded signal sequence over the single pair of conductors deters intruders from compromising system security, and also simplifies the installation.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: October 4, 1983
    Assignee: Spectrum Four-Syte Corporation
    Inventor: Irwin M. Kaplan
  • Patent number: 4390758
    Abstract: A key-actuated locking device is used with a key having a plurality of spaced-apart teeth which define a pattern. The locking device includes a key passageway into which the key is inserted with predetermined orientation. A plurality of elastomeric conductors are positioned proximate the passageway and are selectively compressed by the teeth of the key when the key is inserted into the key passageway. A plurality of pairs of separated conductors are also supported by a base (such as a printed circuit board). Each conductor pair is positioned to be engaged and conductively connected by one of the elastomeric conductors when that elastomeric conductor is connected by a tooth of the key. A circuit is connected to the separated conductor pairs which permits operation of a lock mechanism when all of the proper elastomeric conductors (corresponding to the required pattern of teeth on the key) are compressed and all other elastomeric conductors are not compressed.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: June 28, 1983
    Inventor: Max S. Hendrickson
  • Patent number: 4383242
    Abstract: An anti-theft system which is armed only when a hand-held coded transmitter is operated; the system is disarmed upon a subsequent operation of the transmitter. Whenever the transmitter is operated, the horn beeps, and the lights flash; this provides both verification that the system is armed, and serves as a car-locating aid in a parking field. Tampering with the automobile results in intermittent beeping of the horn and flashing of the lights. The horn beeping may be disabled during the verification and car locating sequences, while still operating if unauthorized access to the automobile is attempted. Other features include disabling of the horn beeping by momentarily turning on the ignition; beeping of the horn after the system is disarmed and a door is opened by the operator if, during his absence, unauthorized access was attempted; locking and unlocking of the doors with transmitter operation; and detection of unauthorized access attempts by sensing vibrations in the vehicle radio loudspeakers.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: May 10, 1983
    Assignee: TMX Systems Limited
    Inventors: Nathan Sassover, William A. Rennie
  • Patent number: 4354189
    Abstract: A system and method are provided for opening a lock or activating a switch by electronically controlled means. In one form, a finger ring is provided which contains a code recording supported within or adjacent the crown thereof. When the hand of the person wearing the ring is held near a reading device, such as to dispose the crown within a receptacle containing the reading device, the code is automatically read and electrical signals generated thereby are applied to close or open an electrical switch or operate a motor or solenoid for opening a lock and/or drive a door to open. If the signals generated in reading the ring recording is a code, they may be applied to a comparator for operating the lock or switch if the code is an enabling code. The reading device may comprise a photoelectric cell or bank of cells adapted to read variations in reflectivity of the ring code.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: October 12, 1982
    Inventor: Jerome H. Lemelson
  • Patent number: 4333073
    Abstract: A mechanism comprising a code wheel assembly including a first element, a second element and a third element, a element, a plurality of main code posts preset for locking the first element and the second element in driving relation, selectively operable means for actuating the main code posts sequentially in a predetermined sense for unlocking the second and first elements, an auxiliary code post operable for locking the first element to the third element following the actuation of the main code posts sequentially in said predetermined sense to unlock the first and second elements, control means selectively actuated by the third element for performing a control function, and said control means being selectively actuated by said third element following the locking of the first element to the third element by the auxiliary code post and after the first element has been unlocked from the second element.
    Type: Grant
    Filed: May 28, 1964
    Date of Patent: June 1, 1982
    Assignee: The Bendix Corporation
    Inventor: Peter J. Caruso
  • Patent number: 4333074
    Abstract: A security system in which a predetermined combination can be set by a operator to disable the system. An audible alarm is sounded when the entered combination differs from the correct combination by an error outside prescribed limits and a secondary alarm given when the error is within the limits.
    Type: Grant
    Filed: March 5, 1980
    Date of Patent: June 1, 1982
    Assignee: Southwater Security Limited
    Inventors: Hugh E. Sutherland, Philip J. Spiegelhalter, Martin R. Spiegelhalter, Brian H. Goring
  • Patent number: 4333090
    Abstract: A secure keyboard input terminal is disclosed in which a secret user identification code number or other confidential data sequence formed from a set of alpha-numeric characters (for example, the ten numerical digits 0 through 9) may be input secretly by a user, the terminal itself comprising (a) a plurality of input keys (in the case of the illustrated apparatus, 10 separate keys), (b) a corresponding plurality of character displays adapted for displaying said characters and (c) electronic circuitry for (1) apparently randomly associating selected ones of said character set to respective individual keys, (2) displaying to the user the character thus associated with each key and (3) translating a signal representing the actuation of a particular key by the user into a signal representing the particular character then associated with that key.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: June 1, 1982
    Inventor: Steven B. Hirsch
  • Patent number: 4327353
    Abstract: An electronic system is provided for use with motor vehicles, homes, offices, factories, or other applications where it is desired to control access and/or operation. The security system utilizes a coded electronic key, preferably in the form of a card, which is connected to a decoder for identification by composing the key code with a stored code. If the electronic key is properly matched to the decoder, the system is allowed to function without tripping alarms. The system includes monitoring devices, supervising cabling and various access points, such as doors, hoods, etc., which, if breached without the proper card in place, will trip an alarm. The system is deactivated with the proper key and the system includes appropriate delays to allow proper parties to move in and out of the secured vehicle, room, etc.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: April 27, 1982
    Assignee: George W. Beard
    Inventors: George W. Beard, James M. Mulvaney
  • Patent number: 4322719
    Abstract: A coded key operated solid state entry system for a controlled access to a multiplicity of electronic circuits by the use of corresponding coded keys embodying a detection and monitoring system, the detection and monitor system being activated by the insertion into the keyway of a coded key particularly adapted to successively engage a plurality of switches which engage a timer for a timed interval of key insertion and which energizes a circuit to unlatch normally latched tumblers and which upon rotation by the key to the extent of the code of the key, an optic coupling circuit is energized and the code of the tumblers is read, the optic coupler interfaces with a comparator which functions to match the code read with a corresponding coded electronic circuit. If the code is not matched with a corresponding circuit, the timed interval of the timer will expire and the circuit unlatching the tumblers will be caused to become de-energized locking up the tumblers and the key.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: March 30, 1982
    Inventor: John H. Moorhouse
  • Patent number: 4319223
    Abstract: A decoder mechanism comprising a code wheel assembly including an inner wheel element and an outer wheel element, means for locking the inner wheel element to the outer wheel element in driving relation, means selectively operable for actuating said locking means in locking and unlocking senses, other means selectively operable for changing the locking and unlocking senses of said locking means, and said other means including means effective to transfer from said one unlocking sense to said other unlocking sense upon actuation of said locking means in said one unlocking sense.
    Type: Grant
    Filed: July 1, 1965
    Date of Patent: March 9, 1982
    Assignee: The Bendix Corporation
    Inventor: Peter J. Caruso
  • Patent number: 4315247
    Abstract: A security system employs a combination memory and processor which upon insertion of a key, is operative in a first mode to store a predetermined digital code associated with the key in a memory associated with the processor. During this first mode, any digital code manifested by any one of a plurality of keys is automatically stored in the memory by the insertion and withdrawal of the selected key. Thereafter, the processor serves to recognize only the selected key to enable activation of a controlled mechanism in a second mode again manifested by the insertion of the selected key within the access slot. The combination processor can be paralleled to enable one to control a single entranceway by means of a plurality of keys each associated with one processor or to employ different keys at one location to initiate other functions as activation of burglar alarms and so on. The system has applicability as a security system and has utility in many commercial and residential applications.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: February 9, 1982
    Inventor: Charles E. Germanton
  • Patent number: 4303909
    Abstract: A standard mechanical lock is provided with an electrical coding system for setting off an alarm in the event that an incorrect key is used or the lock is tampered with. The electrical coding system includes a binary code inscribed in the back edge of the key. A plurality of conductive fingers are mounted on the lock body to contact the back of the key when the key is rotated in the lock. A decoding circuit is provided which sounds an alarm in the event that an incorrect code is presented to the fingers. In the event that an attempt is made to pick the lock, one or more of the fingers will become grounded thus setting off the alarm. Automotive and building applications are disclosed wherein microswitch sensors are placed at strategic locations to set off the alarm in the event that an attempt is made to circumvent the mechanical lock.
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: December 1, 1981
    Assignee: James A. Martin
    Inventor: Franklin J. Martin
  • Patent number: 4283097
    Abstract: A cassette for banknotes and like valuable articles is provided with a displaceable lid (6) and locking means (10) for latching the lid of the cassette when the cassette is located outside a housing (25) in which it is intended to be placed. An operating means (8) is arranged to co-act with the locking means and with a latching element (15). The latching element is arranged to be released in dependence upon a pre-set program. A signal circuit is arranged to send a code signal to a detector circuit (23) when electrical contact elements on the cassette and the housing co-act with one another, which detector circuit, when the signal coincides with the signal program in the detector circuit, causes a signal to be sent for moving the latching means to a non-latching position.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: August 11, 1981
    Inventor: Leif Lundblad
  • Patent number: 4280119
    Abstract: Electronic key systems using no moving parts are disclosed. In one embodiment capacitive sensing is provided and in a further embodiment ultrasonic sensing is used. Both embodiments can employ binary coding for use with local or remote logic circuits to control locking mechanisms.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: July 21, 1981
    Inventor: George A. May
  • Patent number: 4277777
    Abstract: This invention relates to safety and security systems. Selective analog solid state electronics which permit entry to or exit from a secured area for authorized personal by a sequential push button operation or by coded card reading.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: July 7, 1981
    Assignee: Friedemann Joachim Schulz
    Inventor: Friedemann J. Schulz
  • Patent number: 4274080
    Abstract: A magnetic security system is controlled by a magnetic key having magnetic devices defining an operating code which may be operatively interposed relative to a sensing device which will read the code defined on the key and will activate an electrical control system for delivering an electrical signal depending upon the code sensed upon the interposed key. The sensor device includes a code storage element and when the magnetic key is interposed relative to the sensor device, a comparison is drawn between the code on the key and the code programmed into the storage element. The storage element includes means for changing the code which is stored therein and lock means are provided to enable and disable changing of the code stored in the storage element.
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: June 16, 1981
    Assignee: Sachs-Systemtechnik GmbH
    Inventor: Gerd Brunken
  • Patent number: 4258346
    Abstract: A magnetically operated digital switch (10) includes an array of magnetically actuated relays (14-24) mounted adjacent a magnetic shield (26) having an array of holes (28-38) therein corresponding to the location of the relays (14-24). The switch assembly is mounted on a nonmagnetic plate so that the relays can be actuated by a small magnet (58) which is positioned adjacent the holes in the magnetic shield (26). The shield (26) prevents magnetic flux which is applied to one of the relays from being spilled over and inadvertently actuating a nearby relay. An alarm circuit (50) is provided to decode the key number sequence entered into the digital switch (10) for operation of an alarm relay (56) when the proper key number is entered.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: March 24, 1981
    Inventor: Roger W. Williams
  • Patent number: 4258358
    Abstract: The device includes a housing, a keyboard on the housing, and a loudspeaker and electric components within the housing. The housing is mounted on a door adjacent a magnet mounted on the door frame. The device includes an audio alarm circuit including a loudspeaker for generating an audio alarm, a control circuit coupled to the alarm circuit for controlling operation of the alarm circuit, and signal generating curcuitry including door motion sensing logic for sensing when the door has been opened and for generating an alarm signal which is applied to the control circuit for operating the alarm circuit. The device further includes a programmable alarm inhibiting circuit including the keyboard which comprises a plurality of keys and pushbutton switches operated by the keys. The alarm inhibiting circuit includes keyboard decoding logic. A code setting circuit includes three leads which are coupled to the keyboard decoding logic and which are releasably connected to one side of the pushbutton switches.
    Type: Grant
    Filed: August 14, 1979
    Date of Patent: March 24, 1981
    Assignee: International Quartz Ltd.
    Inventors: Thomas K. P. Lee, Hau C. Lam
  • Patent number: 4245213
    Abstract: A security system includes apparatus for producing a pair of identical keys in the form of photographs of a kaleidoscopic image. One photograph is retained in the system and upon introduction of another photograph back into the system, the images thereon are compared and employed to sound an alarm if the introduced photograph is not the same as the stored photograph or to open a door in response to a favorable comparison of the images. In either case, inasmuch as kleidoscopic images are substantially unique, the photographs become garbaged and are dumped into a bin.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: January 13, 1981
    Inventor: Igor Kriger
  • Patent number: 4232289
    Abstract: An automotive security, convenience and fuel saving system which utilizes a pushbutton combination panel in lieu of conventional keys to control all access to ignition and engine compartment, prevent burglary of mounted components, save fuel, and screen physically and mentally disabled drivers. Basic to the system are pulse gates, pulse triggered locking and unlocking means for hood-ignition-start, burglar alarm pulses to the horn, improved fuel economy pulses to the air conditioner, and pulses to screen physically or mentally disabled drivers. The invention further consolidates and improves the efficiencies of each of these functions and is a new application for and an extended use of electric permutation locks referenced and as modified.
    Type: Grant
    Filed: October 24, 1978
    Date of Patent: November 4, 1980
    Inventor: Don H. Daniel
  • Patent number: 4232291
    Abstract: An electronic key and lock system. The key unit is plugged in the unit and electrically interconnected therewith only through the leads. Each unit is fitted with a contact strip matrix provided with slots which allow access to the points of intersection of the contact strips from the external face of the unit, the user being provided with conductor pins that can be inserted in the slots so as to set up different combinations. Each unit contains electronic circuits designed to generate (in the case of both the key and the lock) and to detect (in the case of the lock only) a signal in which at least one parameter varies as a function of the established combination, the lock incorporating an electrical power supply for the electronic circuits of both units.
    Type: Grant
    Filed: October 13, 1978
    Date of Patent: November 4, 1980
    Assignee: International Detection Protection
    Inventor: Raymond Bernier
  • Patent number: 4210900
    Abstract: A system is disclosed for reading a code established by a surface acoustic wave device. The system has a first antenna connected to a supply for transmitting a signal, a second antenna for receiving said signal and supplying it to a first transducer on a surface acoustic wave device, the first transducer converting the signal into surface acoustic waves, a second transducer on the surface acoustic wave device for converting the surface acoustic waves to a coded signal, a third antenna for transmitting the coded signal, and a fourth antenna for receiving the coded signal and connected to a receiver for providing an output dependent upon the coded signal. This system is particularly useful for access control systems.
    Type: Grant
    Filed: August 16, 1978
    Date of Patent: July 1, 1980
    Assignee: Honeywell Inc.
    Inventor: Gideon Shavit
  • Patent number: 4205300
    Abstract: An antitheft system for vehicles in which an operator actuates a thumbwheel to select one predetermined numerical combination and actuates a push button switch to turn on the system. The operator also actuates the thumbwheel to select another predetermined numerical combination and actuates the push button switch to turn off the system. The actuation of the thumbwheel by an operator to a numerical combination other than one of the predetermined numerical combination results in the operation of an alarm. Disposed within the vehicle are mercury switches, which sense any movement of the vehicle, when the system is turned on. When a mercury switch senses any movement of the vehicle, such as movement caused by the towing of the vehicle or the jacking up of the vehicle, the change of state of the mercury switch initiates the operation of an alarm. Also, the opening of a hood, door or trunk will initiate the operation of an alarm when the system is turned on.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: May 27, 1980
    Assignee: Techne Electronics, Ltd.
    Inventors: Eugene Y. Ho, Joseph A. Musolino
  • Patent number: 4197524
    Abstract: An electromechanical lock detects a series of taps on a surface. After converting the taps into a series of electrical signals, processes the signals and compares the tap sequence with a pre-set code.
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: April 8, 1980
    Assignee: General Electric Company
    Inventor: Robert J. Salem
  • Patent number: 4194176
    Abstract: Only one lockable key switch is provided to which plural kinds of operator clerk keys held by cashiers and a master clerk key held by an administrator are inserted. The lockable key switch develops a signal representative of the inserted clerk key for identifying a cashier operating the electronic cash register. Nonlockable switches are formed on a keyboard panel for introducing a clerk specifying signal when the master clerk key is inserted into the lockable key switch.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: March 18, 1980
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yositaka Fukuma
  • Patent number: 4189712
    Abstract: A system and method are provided for opening a lock or activating a switch by electronically controlled means. In one form, a finger ring is provided which contains a code recording supported within or adjacent the crown thereof. When the hand of the person wearing the ring is held near a reading device, such as to dispose the crown within a recepticle containing the reading device, the code is automatically read and electrical signals generated thereby are applied to close or open an electrical switch or operate a motor or solenoid for opening a lock and/or drive a door to open. If the signals generated in reading the ring recording is a code, they may be applied to a comparator for operating the lock or switch if the code is an enabling code. The reading device may comprise a photoelectric cell or bank of cells adapted to read variations in reflectivity of the ring code.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: February 19, 1980
    Inventor: Jerome H. Lemelson
  • Patent number: 4161721
    Abstract: An alarm device having a code verification system is disclosed for registering and transmitting a preselected code to a receiving station. If the preselected code is at the receiving station, no alarm signal will be produced. The code verification system comprises register means under control of an operator for registering a code that is entered therein by the operator. A transmitter is provided which is responsive to a transmit signal for transmitting the contents of the register to the receiving station. A transmitter signal generating means is similarly provided for generating the transmit signal to initiate a transmission. The system further includes a comparator for comparing the code registered in the register with the preselected code and for generating an inhibit signal when the codes are different. Inhibit means is provided which is responsive to the inhibit signal for preventing transmission of the contents of the register.
    Type: Grant
    Filed: August 25, 1977
    Date of Patent: July 17, 1979
    Assignee: Holmes Protection, Inc.
    Inventors: Robert M. Conklin, Arthur T. Human
  • Patent number: 4143368
    Abstract: A portable infrared signal generator is actuatable by a motor vehicle operator at a distance from the vehicle to generate digitally coded infrared signal pulses in accordance with either a first or a second predetermined digital code. A receiver on the motor vehicle is effective to receive the infrared signal pulses, decode them and actuate apparatus responsive to the first digital code to unlock a power door lock and power a light effective to illuminate at least a part of the vehicle or responsive to the second digital code to actuate an alarm. Both the first and second digital codes contain a common identifying portion substantially unique to the particular motor vehicle, which portion may be permanently stored in the generator and receiver by the connections of the input/output terminals of a microprocessor chip mounted on a printed circuit board to one of two voltage sources on the printed circuit board.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: March 6, 1979
    Assignee: General Motors Corporation
    Inventors: William D. Route, John T. Auman, Wesley A. Rogers
  • Patent number: 4125833
    Abstract: A sequence switching circuit including a plurality of two state DPDT switches for controlling the coupling of an energy source to either an output terminal or an alarm terminal, said switching circuit including interconnection means between said plurality of switches for coupling said energy source to said output terminal upon the changing of the state of said switches in a predetermined sequence, and for coupling said source of energy to said alarm terminal upon the changing of the state of any switch in a sequence other than the predetermined sequence. Said switching circuit further includes means for continuing the coupling of the energy source to said alarm terminal once said coupling has begun until all said switches are returned to their original state, and further until override means are actuated. The switching circuit further includes means for altering said predetermined sequence in a simple and easy manner.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: November 14, 1978
    Inventor: Donald L. Ravey
  • Patent number: 4114142
    Abstract: A memory device stores signals representative of a predetermined number of words constituting a given code. When and only when all the words have been received, a release signal causes the stored signals to be released to a device that displays or otherwise furnishes the information contained in the code. If more or less than the predetermined number of words is received by the decoder, a release signal is not generated.
    Type: Grant
    Filed: July 24, 1975
    Date of Patent: September 12, 1978
    Assignee: Keith H. Wycoff
    Inventors: Keith H. Wycoff, William H. Dittmer
  • Patent number: 4114147
    Abstract: A property protection alarm system is disclosed for protecting property against unauthorized intrusion and the like. The alarm system includes a numeric key board and a code combination logic circuit for arming an alarm energization circuit in response to the proper entry of a predetermined numeric code in the numeric keyboard. This predetermined code must be entered within a given period of time determined by the code combination logic circuit. In addition, the numeric key associated with the last digit of the predetermined code must be depressed for a given period of time as also determined by the code combination logic circuit. An exit delay circuit is connected to the output of the code combination logic circuit for delaying the arming of the alarm energization circuit in order to permit an authorized operator to leave the property without energizing the alarm. The alarm energization circuit is connected to a sensing circuit for sensing any intrusion of the property.
    Type: Grant
    Filed: March 24, 1977
    Date of Patent: September 12, 1978
    Inventor: John R. Hile
  • Patent number: 4107655
    Abstract: A code operated device which includes a multiplicity of coded electrical circuits to which it provides access and is mechanically operated by coded keys which respectively correspond to each of the circuits for access to a corresponding circuit. This device includes cylindrical tumblers having their edges coded by an arrangement of reflective spots, the edge coding being arranged by the relative rotation of each tumbler by the coded keys, the edge coding is read by a reflective spot readout unit and the code read is transmitted to an addressing box which in turn matches the code read to a corresponding circuit. The circuits representing the various combinations of the code used are in a conventional arrangement in circuit with said readout units by the use of a printed circuit board.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: August 15, 1978
    Inventor: John H. Moorhouse
  • Patent number: 4106006
    Abstract: A dual-frequency keyable control circuit is triggered into providing an electrical control output signal when two passive keying circuits, tuned to the correct radio frequencies are brought close enough to a sensing element of the keyable control circuit to cause mutual influence between the passive keying circuits and the sensing element.When the keyable control circuit detects that modulation is present at both ratio frequencies in sequence, it produces control signals which can unlock a door, actuate or defeat an alarm, or perform other functions for which it is desired to require key combinations to attain access.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: August 8, 1978
    Assignee: Wagner Electric Corporation
    Inventor: Carl E. Atkins
  • Patent number: 4099161
    Abstract: A coded safing device is provided which produces a desired output upon receipt of a predetermined dual channel binary code. A stepping drive solenoid provides motion input to dual channel electromechanical binary code sensors to drive the sensors and establish the system output only when the proper code has been delivered to permit the electromechanical sensors to move.
    Type: Grant
    Filed: April 1, 1977
    Date of Patent: July 4, 1978
    Assignee: Raymond Engineering Inc.
    Inventor: Raymond A. Wolski