EP0044870A1 - Elektrisches verschlusssystem - Google Patents

Elektrisches verschlusssystem Download PDF

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Publication number
EP0044870A1
EP0044870A1 EP80900422A EP80900422A EP0044870A1 EP 0044870 A1 EP0044870 A1 EP 0044870A1 EP 80900422 A EP80900422 A EP 80900422A EP 80900422 A EP80900422 A EP 80900422A EP 0044870 A1 EP0044870 A1 EP 0044870A1
Authority
EP
European Patent Office
Prior art keywords
circuit
electric lock
switch
door
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80900422A
Other languages
English (en)
French (fr)
Other versions
EP0044870A4 (de
EP0044870B1 (de
Inventor
Shunsaku Nakauchi
Akifusa Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kokusai Gijutsu Kaihatsu Co Ltd
Original Assignee
Kokusai Gijutsu Kaihatsu Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kokusai Gijutsu Kaihatsu Co Ltd filed Critical Kokusai Gijutsu Kaihatsu Co Ltd
Priority to AT80900422T priority Critical patent/ATE15827T1/de
Publication of EP0044870A1 publication Critical patent/EP0044870A1/de
Publication of EP0044870A4 publication Critical patent/EP0044870A4/de
Application granted granted Critical
Publication of EP0044870B1 publication Critical patent/EP0044870B1/de
Expired legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to an electric lock system in which the locking operation and the unlocking operation are controlled by an electric signal.
  • An object of the present invention is to provide an electric lock system in which two light emitting devices such as a light emitting diode, whose light emitting condition varies depending upon the voltage polarity applied thereto are employed, and the opened and closed state of a door and the locked and unlocked state of a lock device can be displayed on the basis of the combination of the light emitting conditions.
  • Another object of the present invention is to provide an electric lock system in which the monitoring of the state of the locking and unlocking operation of the lock device and the state of the opening and closing of a door is carried out through two lead wires and it is possible to automatically monitor the disconnected state and the circuit short state of these two lead wires to improve the reliability of the system.
  • a further object of the present invention is to provide an electric lock system in which, in an electric lock device arranged so as to be able to be unlocked by electrical remote operation and to be manually unlocked by the use of a key, the manual unlocking operation can be prevented by an electrical control.
  • a still further object of the present invention is to provide an electric lock system which is of the so-called hotel lock type, in which a lock of a door is automatically locked when the door is closed again after the door has been opened once.
  • an electric lock system in which an electric lock device is connected to a monitoring/controlling device having a power source circuit for operating the electric lock device and a device for monitoring the locked state and the unlocked state of the electric lock device by means of two lead wires;
  • the electric lock device having a latch for locking a door, a solenoid for locking or unlocking the latch, a change-over switch linked to the operation of the solenoid and a door switch operated in accordance with the opening/closing of the door; an exciting coil of the solenoid, the change-over switch, a diode and the door switch being electrically connected together within the lock device;
  • the power source circuit being arranged by the combination of a power source, a control switch circuit and resistors so as to supply a current thereto with low impedance for actuating operation of the electric device and to supply a current alternately inverting in polarity through the resistors for the monitoring operation of the electric device;
  • the monitoring device having at least two devices for displaying by light emitting
  • Fig. 1 is a sectional view of one example of an electric lock device for use in the system of the present invention
  • Fig. 2 is a circuit diagram of the electric lock device for explaining the operation of the electric lock device shown in Fig. 1
  • Fig. 3 is a circuit diagram of an embodiment of the electric lock system of the present invention
  • Fig. 4 is a circuit diagram of another embodiment of the electric lock system of the present invention
  • Fig. 5 is a circuit diagram illustrating an example of the display device of Fig. 4
  • Fig. 6 is a circuit diagram illustrating another example of the display device of Fig. 4
  • Fig. 7 is a circuit diagram of still another embodiment of the present invention
  • Figs. 8A to 81 are timing charts for explaining the operation of the circuit shown in Fig. 7
  • Fig. 9 is a circuit diagram of one embodiment of an additional circuit
  • Fig. 10 is a circuit diagram of another embodiment for the additional circuit of Fig. 9.
  • Fig. 1 shows an arrangement of an electric lock device used in an embodiment of the system of the present invention.
  • a latch 3 inserted into a seat 2 and a self-sustaining solenoid 4 for maintaining the latch 3 in a locked state are incorporated into a casing 1 mounted on a door not shown.
  • a movable iron core 5 of the solenoid 4 is mechanically connected with a change-over switch 6 by a connecting rod 7.
  • One end of each of diodes 8 and 9 is connected to the change-over switch 6 and the other end of each of the diodes 8 and 9 is connected to a door switch 10 which is turned ON/OFF depending upon whether the door (not shown) is in an open or a closed state.
  • the lock device of the constitution shown in Fig. 1 can be locked or unlocked by an electric signal applied to the solenoid 4, and moreover, the arrangement enables it to be locked and unlocked by a key similarly to the conventionally known lock devices.
  • An exciting coil of the solenoid 4 is designated by reference numeral 11 in Fig. 2, and when the direction of flow of the exciting current through the exciting coil 11 is inverted, depending upon the direction of the exciting current the movable iron core 5 moves from the position shown by the dotted line of Fig. 1 into the position shown by the solid line or from the position shown by the solid line into the position shown by the dotted line. After the movement, it remains at the position it has moved to even if the exciting current is cut off.
  • the latch 3 is prevented from moving in the axial direction when it is sustained at the position shown by the solid line in Fig. 1 so that the lock device is in a locked state, whereas the lock device is in an unlocked state when the movable iron core 5 is sustained in the state shown by the dotted line.
  • the electric lock device shown in Fig. 1 is arranged in such a way that the change-over state of the switch 6 is reversed when the operation of the self-sustaining solenoid 4 finishes and the current is rapidly reduced due to the action of the diodes 8 or 9 so as to prevent the consumption of superfluous current.
  • the solenoid 4 is not limited to a self-sustaining solenoid; a conventional non-self-sustaining solenoid may be used for the arrangement if it is given function equivalent to that of the solenoid 4. That is, on arrangement of two conventional solenoid exciting coils to each of which a diode is connected inversely to the other, and the two sets of exciting coils and the set of diodes connected in parallel, may be inserted in place of the exciting coil 11 of Fig. 2. In accordance with such an arrangement, just one of the two solenoids would be selectively operated by the action of the diodes, depending upon the direction of current flow in this circuit. Therefore, if each operation of these solenoids is interlocked with the well-known mechanical type latch mechanism, the two operations of locking and unlocking can be carried out.
  • Fig. 3 illustrates a circuit diagram of an embodiment of the electric lock system of the present invention for remote-controlling and monitoring the electric lock device arranged as described above by employing two lead wires.
  • a control circuit 60 is connected to an electric lock device 61 by two lead wires 12.
  • a control switch 13 is a switch which can be changed over to any one one of positions A, B and C, but is normally at rest in the position B, and the switch is made so as to be able to be positioned at A or C by manually.
  • the control circuit 60 includes a resistor 14 and.an a.c. power source 15, and diodes 16 and 17 enable the selection of the polarity of a voltage applied to the lead wires 12 by the power source 15 on the basis the switch 13 is changed-over to position A or position C.
  • Reference numerals 18 and 19 designate indicators having polarity for carrying out the current monitoring/indicating, and for example, light emitting diodes or lamps connected in series with a diode may be employed. These indicators have characteristics whereby they emit light when the voltage has been applied thereto in a forward direction and current flows, whereas there is barely any flow of current when the voltage is applied thereto in a reverse direction so that the indicator does not emit a light.
  • the door switch 10 is closed.
  • the control switch 13 is in the B position and an electric lock device 61 is in the locked state.
  • the switch 6 is in the state shown by the dotted line, as described above.
  • the current from the power source 15 flows through the switch 10, the diode 9, the switch 6, the exciting coil 11, the switch 13, the resistor 14 and the indicator 19, the said current never flowing in the reverse direction.
  • the resistance value of the resistor 14 is selected to be a sufficiently large value compared with the resistance of the exciting coil 11 and of a value moreover necessary for lighting the indicator 19. Therefore, in the locked state, the self-sustaining solenoid 4 is not operated and the indicator 19 is lighted by the current flowing through the lead wires.
  • the switch 6 If the movable iron core 5 is pushed down by the use of the key of the door so that the electric lock device 61 is unlocked, since the switch 6 is linked with the movable iron core 5, the switch 6 reverses to change over from the position shown by the dotted line to the position shown by the solid line. As a result, the current flows from the power source 15 to the indicator 18, through the resistor 14, the switch 13, the exciting coil 11, the switch 6, the diode 8 and the switch 10 lighting the indicator 18.
  • the switch 6 Since the switch 6 is switched over as shown by the solid line when the door is not locked by the electric lock device 61, when in this state the switch 13 is switched over manually into the position A, the resistor 14 is by-passed by the switch 13 so that the current from the power source 15 flows into a low impedance circuit. Consequently, sufficient current for driving the self-sustaining solenoid 4 flows into the driving coil 11, and the movable iron core 5 moves upwards so that the electric lock device locks. At the same time, the switch 6 is switched over as shown by the dotted line, and because of the diodes 9 and 16, almost no current flows from the power source 15. In this conditon, the self-sustaining solenoid 4 is maintained in the state at that time, so that the locked state can be confirmed by means of the indicator 19 if the switch 13 is switched back to the positon B.
  • the time required to lock the lock device depends upon the operating time of the solenoid 4,, and is not more than 1/10 of a second, the time is sufficiently start when the switch 13 is at position A, so that there is no problem in practical use.
  • the switch 6 is switched to the state shown by the solid line so that the current flowing through the diode 9 is cut off.
  • the unlocked stat can be confirmed by the indicator 18 when the switch 13 is switched back to the position B.
  • Fig. 4 is a circuit diagram illustrating another embodiment of the present invention.
  • a resistor 20 is connected in parallel with the door switch 10 so that the system is able to distinguish between a break in the circuit and when the door has been opened.
  • Reference numeral 21 designates an interlocking switch wherein two movable contacts 2la and 21b are interlockedly switched to any one of the switching positions A', B' and C'. These movable contacts 21a and 21b are normally at rest in positon B', but they can be changed manually to position A' or C'.
  • the values of the resistors 22 and 23 can be decided in a similar way to that of the resistor 14 of Fig. 3.
  • a relay 26 closes contact portions 26a and 26b when the above-mentioned output signal C 1 becomes “H”.
  • a relay 27 closes contact portions 27a and 27b when the reverse output signal C 2 becomes "H”. Since the signal C 1 and the signal C 2 are mutually opposite states, the relays 26 and 27 operate alternatively and a voltage with an alternating polarity is applied to the lead wires 12 in response to this.
  • a d.c. power source 28 acts as an a.c. power source for lead wires 12 when the movable contacts 21a and 21b are at the position B' through the operation of the relays 26 and 27.
  • a current monitoring device 29 which measures the magnitude of the current flowing through the lead wires 12 and outputs a signal M 1 or M 2 in response to the magnitude of the current flowing therethrough.
  • the signal M 1 is output when the current is not more than a determined value and the signal M 2 is output when the current is more than the determined value.
  • This device 29 may be arranged, for example, by employing a circuit combining a zener diode and a transistor, exciting coil and reed relay, a meter-relay or the like.
  • the current monitoring device 29 is arranged so as to send a signal for discriminating whether the current flowing therethrough is heavy, light or zero.
  • the magnitude of the current mainly depends upon the resistance values of the resistors 20, 22 and 23, heavy current flowing when the resistor 20 is circumvented by the switch 10. The current value becomes low when the switch 10 is open.
  • the current monitoring device 29 is arranged by employing two meter-relays and the signal is sent in response to each current level state, high, low, or zero.
  • one of the meter-relays produces a signal only when the current level is high and the other meter-relay produces a signal when the current level is more than low, that is, when it is also a high level.
  • An indicating device 30 indicates the state on the basis of the combination of the signal from the current monitoring device 29 and H level states of the signals C1 and C 2 from the oscillator 24.
  • the switch 6 Since the switch 6 is switched over at the position shown by the solid line in the unlocked state, in contrast with the locked state, the current is prevented from flowing when the signal C 1 is “H” level and the current flows in the circuit when the signal C 2 is “H” level.
  • the current flowing through the current monitoring device 29 at this time is also large.
  • the current flowing through the current monitoring device 29 is large when the lead wires 12 are shortened midway, even if the signals C 1 and C 2 are "H" level, and there is no current in the circuit when the lead wires 12 are disconnected midway, even if the signals C 1 and C 2 are "H” level.
  • Fig. 5 shows an example of the indicating device 30.
  • the indicating device 30 comprises D type flip-flops 62 to 65, AND circuits 66 to 70, driving transistors 71 to 75 and indicating lamps 77 to 81 inserted between a power source 76 and each transistor.
  • the output signal C 1 is input into the clock terminal CK of the D type flip-flop 62, the inverted output signal C 2 into clock terminals CK cf the D type flip-flops 63, 64 and 65, and the signals M 1 and M 2 into D input terminal D of each D type flip-flop as shown in the figure.
  • Each of the D type flip-flops 62 to 65 latches the level state of the signal M 2 when the signal C 1 is at "H” level and the level state of the signal M 1 when the signal C 2 is at “H” level, and the output signals from these D type flip-flops are input into a logic circuit composed of AND circuits 66 to 70 and arranged in accordance with Table 1.
  • the outputs from the AND circuits 66 to 70 represent the states of circuit short, locked, unlocked, door opened and disconnection, respectively. The result is indicated by the lamps.
  • a series circuit of a resistor 20' and the switch 10 may be arranged as shown by the dotted line in the figure instead of the parallel circuit of the resistor 20 and the switch 10. Since the resistor 20' is inserted into or disconnected from the electric lock device circuit in response to the opening/closing of the door switch 10 even when such a circuit arrangement is employed, it is possible to change the value of the current flowing through the current monitoring device 29.
  • each state can be discriminated on the basis of the signals M 1 , M 2 , C 1 and C2.
  • Fig. 6 shows another embodiment of an indicating device arranged on the basis of Table 2.
  • This indicating device is composed of D type flip-flops 82 to 87, AND circuits 88 to 92, transistors 93 to 97, lamps 98 to 102 and a power source 103.
  • the basic operation of this circuit is the same as that of the circuit shown in Fig. 5, and each output of the AND circuits 88 to 92 represents each state of circuit short, locked, unlocked, door opened and disconnection.
  • F ig. 7 shows a circuit of still another embodiment of the present invention.
  • Figs. 8A to 81 are timing charts showing the operation of the circuit.
  • two electric lock devices 31 and 32 are connected in parallel by means of the lead wires 12.
  • the electric lock device 31 is provided with a mechanism which enables the lock device to be opened by a key as mentioned above, the electric lock device 32 does not have such a mechanism so that the device 32 can be locked or unlocked only by the electrical control. Since the lock device 32 is so arranged that the bolt is directly driven by the iron core of the solenoid to move in or out, there is not provided a keyhole.
  • These two lock devices are mounted on one dcor which can be opened only when both lock devices have become unlocked.
  • the circuits in the electric lock devices 31 and 32 are designated by adding suffixes -1, -2 to the references numeral of Fig. 3.
  • Numerals 33 and 34 designate photo- couplers employing light emitting diodes and the output circuit becomes low in impedance when the voltage is applied to input circuit in a forward direction.
  • the output signals 33a and 34a from photo-couplers 33 and 34 are derived as output signals S 1 and S 2 through inverters 35 and 36.
  • Fig. 37 is a clock oscillator for generating a clock signal S 3 synchronizing with the period of the power source 15.
  • the waveform of the power source voltage is shown in Fig. 6A and the waveform of the clock signal is shown in Fig. 6B.
  • 41, 42 and 43 are AND circuits, 44 and 45 are transistors, and 46 is a relay whose exciting coil and contact point are designated by references R A and ra. 47 is also a relay whose exciting coil and contact point are designated by references RB and rb.
  • 48 and 49 are manual operating switches
  • 50 is an outer contact point which is closed by reception of a signal from a fire alarm box to automatically unlock the lock device in an emergency
  • 51 is an input portion actuated by an outer signal which will be described hereinafter
  • 52-1, 52-2 and 52-3 are pull-up resistors one end of each of which is connected to a d.c. power source for the inverters and the AND circuits.
  • the relay operates to switch over the contact point rb as shown by the dotted line when the transistor 45 or the switch 49 is closed, and the current for locking the lock device is sent to the exciting coils 11-1 and 11-2 of the electric lock devices 31 and 32 through a diode 16 to lock the electric lock device.
  • the operation in this arrangement is different from that in the foregoing arrangement in the locking/unlocking operation effected by the key.
  • the switches 6-1 and 6-2 are switched over as shown by the dotted lines when the two electric lock devices 31 and 32 are in the locked state, so that the circuit current is prevented from flowing by diodes 9-1 and 9-2. Therefore, the photo-coupler 33 is rendered inoperative, and the input terminal of the inverter 35 is at "H" level so that the signal S I is maintained at "L” level.
  • the level of the output signal 34a from the photo-coupler 34 is alternately changed to "H" level or "L” level in response to the current flowing through the contact point 6-1 and the diode 9-1.
  • Fig. 9 is a still further embodiment of the present invention.
  • Fig. 9 illustrates an example of the circuit arrangement of an additional circuit 200 which is added to the circuit shown in Fig. 7 for the purpose of forming a lock device which is automatically locked when the door is closed after the door has been opened once (this will be referred to as a hotel lock device hereinafter).
  • the door open signal S 4 is input to an AND circuit 55 through an inverter 54 and, furthermore, the output signal from a memory 53 is also applied thereto.
  • the output signal from the AND circuit 55 is applied to an actuator. 56 and to the connecting point betweeen the relay 47 and the switch 49 through a manual operating switch 57 for automatically locking.
  • the door open signal S 4 is sent from the AND circuit 43.
  • the memory circuit 53 memorizes the door open signal S 4 and sends a signal to the AND circuit 55. Since the signal from the inverter 54 is at “L” level at this time, the output from the AND circuit is also at “L” level. Next, when the door is closed, the signal from the AND circuit 43 becomes “L” level and the output of the inverter 54 becomes “H” level.
  • the AND circuit 55 is opened in accordance with the output from the inverter 54 and the signal from the memory circuit 53, and the signal of "H" level is applied to the actuator 56.
  • the actuator 56 applies the signal to the relay 47 via the manual switch 57 to deenergize the relay 47. At the same time, the memory content of the memory circuit 53 is erased. When the relay 47 is energized, as described above, the electric lock device is locked.
  • this electric lock device can possess the function of a hotel lock so that once a person opens the door and exits, and the door has closed the person cannot reenter the room without the key.
  • the switch S 7 is turned ON/OFF by the manual operation in the embodiment shown in Fig. 9, it is also possible to arrange so as to automatically close the switch 57 for a predetermined time period, e.g., for the night time. According to the arrangement described above, even if the locking operation is forgotten at the closing of an office or the like, the door is automatically locked without the locking operation with the key when the last person goes out. It is very easy to realize a timer device for automatically opening or closing the switch 57 at a predetermined time by means of a conventional circuit.
  • Fig. 10 shows another embodiment of the additional circuit having the function equal to that of the additional circuit shown in Fig. 9.
  • This additional circuit 203 comprises a relay 58 having contact points rc-1 and rc-2 which are operated by the energization of the coil RC, a power source 59, a capacitor 201 and a relay 204 having a contact point rd operated by the energization of a coil RD.
  • the relay 58 When the door is opened, the relay 58 is actuated by the signal S 4 from the AND circuit 43. Since the contact point rc-1 is a make contact, it is switched as shown by the dotted line when the relay 58 is operated, so that the capacitor 201 is charged. The capacitor 201 is used instead of the memory circuit 53.
  • the contact point rc-2 is a break contact, and it is at the position shown by the dotted line during the period the relay 58 is operating, that is, the period the door is open.
  • the contact point rc-2 has the same function as that of the AND circuit 55 shown in Fig. 9.
  • the relay 58 is rendered inoperative when the door is closed, and the contact points rc-1 and rc-2 are returned to the positions shown by the solid lines.
  • the discharge current from the capacitor 201 flows into the relay 204 when the contact point rc-2 is closed, and the relay 204 is actuated.
  • the relay 47 is operated by the operation of the make contact rd to carry out the locking operation.
  • the relay 204 acts as the actuator 56 of Fig. 9.
  • the present invention is not limited to the relay circuit and an additional circuit which can attain the same aims may be arranged by utilizing conventional semiconductor techniques or the combination of relay and semiconductor.
  • the present invention can improve the reliability of an electric lock device and save the construction and maintenance costs, and the present invention is applicable for many uses due to its multiple functions.

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  • Lock And Its Accessories (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
EP80900422A 1980-02-09 1980-02-09 Elektrisches verschlusssystem Expired EP0044870B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80900422T ATE15827T1 (de) 1980-02-09 1980-02-09 Elektrisches verschlusssystem.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1980/000019 WO1981002321A1 (en) 1980-02-09 1980-02-09 Electric lock system

Publications (3)

Publication Number Publication Date
EP0044870A1 true EP0044870A1 (de) 1982-02-03
EP0044870A4 EP0044870A4 (de) 1982-06-18
EP0044870B1 EP0044870B1 (de) 1985-09-25

Family

ID=13706005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80900422A Expired EP0044870B1 (de) 1980-02-09 1980-02-09 Elektrisches verschlusssystem

Country Status (4)

Country Link
EP (1) EP0044870B1 (de)
AT (1) ATE15827T1 (de)
DE (1) DE3071111D1 (de)
WO (1) WO1981002321A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535773A1 (fr) * 1982-11-10 1984-05-11 Lewiner Jacques Perfectionnements aux dispositifs de controle et de commande comportant plusieurs serrures electriques
GB2215387A (en) * 1988-02-03 1989-09-20 John Paul Keeble Central locking system for buildings
WO1990003485A1 (en) * 1988-09-28 1990-04-05 Mikromax Ab General locking system
FR2695955A1 (fr) * 1992-09-23 1994-03-25 Rockwell Abs France Dispositif de détermination de l'état d'un circuit électrique, notamment de contrôle/commande d'une serrure électrique d'un ouvrant de véhicule automobile et serrure comportant un tel dispositif.
AT400608B (de) * 1991-10-22 1996-02-26 Wiener Metallwerk Gesmbh Verriegelung für türen, insbesondere drehfalttüren
FR2788546A1 (fr) * 1999-01-18 2000-07-21 Abs Rica Ateliers Bernard Seri Serrure et systeme de securite equipe d'une telle serrure
US20090119785A1 (en) * 2007-11-05 2009-05-07 David Carroll Challener System and Method for Secure Usage of Peripheral Devices Using Shared Secrets
WO2016064596A1 (en) * 2014-10-22 2016-04-28 Borgwarner Inc. Solenoid driver

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN102431609B (zh) * 2011-09-30 2013-11-06 河南龙驹电动科技有限公司 电动自行车自动锁
CN112803273B (zh) * 2020-12-07 2022-03-29 新沂市五联电气科技有限公司 一种安全方便的多功能低压电表箱

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US2096935A (en) * 1935-05-24 1937-10-26 Gen Railway Signal Co Railway traffic controlling system
GB808989A (en) * 1956-05-25 1959-02-18 Hollins J R Thermo-electrically controlled latch
JPS3822790Y1 (de) * 1961-01-28 1963-10-30
GB1164110A (en) * 1965-12-22 1969-09-17 Heiwa Denki Kabushiki Kaisha Remote Control Devices for Operating Doors Locks
JPS5161398A (ja) * 1974-11-25 1976-05-27 Kokusai Gijutsu Kaihatsu Kk Denkijokudosochi
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DE2532059A1 (de) * 1975-07-17 1977-02-03 Patra Patent Treuhand Schliessanlage mit mindestens einem schloss oder einzelschloss
US4013930A (en) * 1975-10-20 1977-03-22 Wico Corporation Electronic door lock
JPS5627320Y2 (de) * 1976-04-30 1981-06-29

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Publication number Priority date Publication date Assignee Title
US2096935A (en) * 1935-05-24 1937-10-26 Gen Railway Signal Co Railway traffic controlling system
GB808989A (en) * 1956-05-25 1959-02-18 Hollins J R Thermo-electrically controlled latch
JPS3822790Y1 (de) * 1961-01-28 1963-10-30
GB1164110A (en) * 1965-12-22 1969-09-17 Heiwa Denki Kabushiki Kaisha Remote Control Devices for Operating Doors Locks
JPS5161398A (ja) * 1974-11-25 1976-05-27 Kokusai Gijutsu Kaihatsu Kk Denkijokudosochi
JPS5390593U (de) * 1976-12-24 1978-07-25

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See also references of WO8102321A1 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535773A1 (fr) * 1982-11-10 1984-05-11 Lewiner Jacques Perfectionnements aux dispositifs de controle et de commande comportant plusieurs serrures electriques
GB2215387A (en) * 1988-02-03 1989-09-20 John Paul Keeble Central locking system for buildings
GB2215387B (en) * 1988-02-03 1992-08-26 John Paul Keeble Central locking system for buildings
WO1990003485A1 (en) * 1988-09-28 1990-04-05 Mikromax Ab General locking system
AT400608B (de) * 1991-10-22 1996-02-26 Wiener Metallwerk Gesmbh Verriegelung für türen, insbesondere drehfalttüren
FR2695955A1 (fr) * 1992-09-23 1994-03-25 Rockwell Abs France Dispositif de détermination de l'état d'un circuit électrique, notamment de contrôle/commande d'une serrure électrique d'un ouvrant de véhicule automobile et serrure comportant un tel dispositif.
FR2788546A1 (fr) * 1999-01-18 2000-07-21 Abs Rica Ateliers Bernard Seri Serrure et systeme de securite equipe d'une telle serrure
US20090119785A1 (en) * 2007-11-05 2009-05-07 David Carroll Challener System and Method for Secure Usage of Peripheral Devices Using Shared Secrets
US8539572B2 (en) * 2007-11-05 2013-09-17 Lenovo (Singapore) Pte. Ltd. System and method for secure usage of peripheral devices using shared secrets
WO2016064596A1 (en) * 2014-10-22 2016-04-28 Borgwarner Inc. Solenoid driver
CN106796839A (zh) * 2014-10-22 2017-05-31 博格华纳公司 电磁阀驱动器

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WO1981002321A1 (en) 1981-08-20
EP0044870A4 (de) 1982-06-18
EP0044870B1 (de) 1985-09-25
ATE15827T1 (de) 1985-10-15
DE3071111D1 (en) 1985-10-31

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