Abstract: A push-pull cable arrangement for selectively transmitting longitudinal motion to two separate destinations has an inner wire having a front end, a rear end and an intermediate node between the front and the rear ends. The inner wire is enclosed with a first outer casing between the front end and the intermediate node, and with a second outer casing between the intermediate node and the rear end. Front and rear ends of the first outer casing are held stationary. A front end of the second outer casing facing the intermediate node of the inner wire is movable, and a rear end of the second outer casing facing the rear end of the inner wire is held stationary. When the front end of the inner wire is pulled, a longitudinal motion of the inner wire is transmitted to the rear end of the inner wire, by which a first receiving unit is moved. When the front end of the inner wire is pushed, the intermediate node of the inner wire pushes the front end of the second outer casing, by which a second receiving unit is moved.

Abstract: In a magnetic locking system for locking a door to a fixed member, comprising a key cylinder connected to the door, a magnetic sensor connected to the door near the key and operating when sensing a predetermined magnetic force, control means for locking the door to the fixed member when the magnetic sensor operates, and a magnet-mounted key including a key cylinder proper which is to be engaged with the key cylinder and a key head which is equipped with an elongate magnet piece, there is proposed an arrangement in which when the key is operatively engaged with the key cylinder to turn same, an imaginary plane which the axis of the magnet piece describes when the key turns about the axis of the key cylinder intersects the axis of the magnetic sensor.

Abstract: The present invention relates to a hood locking apparatus for motor vehicles, and more particularly to a hood locking apparatus which is adapted to overcome any tendency for a remote control cable to disengage from a base plate of the locking mechanism. The locking apparatus uniquely comprises a reinforcing plate defined at the reverse side of a base plate to straddle mounting end portions defined at opposite ends of the base plate for attachment to the vehicle body and a cable disengagement preventive piece defined at and projected from the reinforcing plate to extend in the direction of a notch formed through the base plate. The reinforcing plate has its one end welded to the mounting end portions in such a manner that a predetermined clearance can be formed between the other end and one of the mounting end portions of the base plate.

Abstract: A reduction gear mechanism comprising a worm and a worm wheel which mechanism includes a magnet clutch wherein a coil is disposed in one side of the worm wheel which serves as a rotor, while an armature is disposed in the other side of the same. Upon energization of the coil, the mechanism acts as a normal reduction gear whereas, upon deenergization, an output power shaft of the clutch can be rotated freely or independently. Since the incorporation of the magnet clutch results in no substantial increase of the size of the reduction gear mechanism, the mechanism can be advantageously installed where a space for installation is restricted, such as a door of an automobile.

Abstract: A device for detecting the removal of a cylinder lock used on cars, trunks, etc. when an unjust force is applied to the cylinder lock. The device also detects the locked and unlocked conditions of the cylinder lock. Magnets and magnetic sensor switches are used. A magnetic shield plate shields the flow of magnetic flux between the magnet and the magnetic sensor switch. When an unjust force is applied to the cylinder lock to take off the cylinder lock, the magnetic shield plate will be removed from between the magnet and the magnetic sensor switch, causing the magnet to energize the magnetic sensor switch, thereby detecting the removal of the cylinder lock.In addition, when the cylinder lock is turned by a key, another magnet connected to a rotor of fixed on the cylinder lock approaches either of a pair of magnetic sensor switches, whereby the locked and unlocked conditions of the cylinder lock are detected.

Abstract: A locking system for a door of an automobile is provided with an emergency unlocking means which detects critical deceleration or acceleration of the automobile by the aid of inertia and transmits inertial movement to the locking system to cause it to move from its locking position to its unlocking position. Preferably, the emergency unlocking means comprises an inertia lever having a weight pendulum capable of swinging and thereby pushing a member of the locking system, and holding means for normally holding the inertia lever in its normal position.

Abstract: By providing two separate units for actively opening and closing a door of an automobile, safe and reliable door opening and closing operation may be achieved. The first unit is operated to open the door in a normal way and closes the door to its not fully latched state while the second unit completes the door closure operation by closing it to the fully latched state, thereby reducing the unfavorable influences arising from the impact which is otherwise unavoidable for complete closure of the door.

Abstract: A push-pull cable arrangement for selectively transmitting longitudinal motion to two separate destinations has an inner wire having a front end, a rear end and an intermediate node between the front and rear ends. The inner wire is enclosed with a first outer casing between the front end and the intermediate node, and with a second outer casing between the intermediate node and the rear end. A front end of the first casing facing the front end of the wire is stationary, and a rear end of the second casing facing the rear end of the inner wire is also stationary. There is further provided an intermediate unit having a first member to which a rear end of the first casing is fixed, and a second member to which a front end of the second casing is fixed. One of the first and second members is a stationary housing, and the other is a sliding member slidably contained in the housing.

Abstract: A door locking device having a high anti-theft performance is herein disclosed. The device comprises a catching device mounted in the door and including a hook member and a lever member, the hook member being locked when the lever member is moved in a direction and unlocked when the lever is moved in an opposite direction; a key cylinder rotatably mounted to the door, the key cylinder being rotatable about the axis thereof only when handled by a specified key; an arm securely connected to an end of the key cylinder and extending therefrom radially outwardly; a rod pivotally connected to the arm and extending therefrom toward the lever member, so that rotation of the key cylinder about the axis thereof induces an axial movement of the rod; and a play providing device interposed between the extending end of the rod and the lever member, so that a play is permitted between the rod and the lever member upon relative movement therebetween.

Abstract: There is provided a keyless entry system in which a permanent code, or first code, and a user's code, or second code are used. The second code is presettable in conjunction with use of the first code. When the first code is inputted, the system gets ready for presetting a desired number of code elements consituting the second code. According to the invention, the system is provided with a circuit for variably presetting the number of the code elements, which circuit is responsive to the first code to vary the presetted number of the second code elements to that inputted following to the input of the first code. Preferably, the keyless entry system further includes a theft prevention circuit which inhibits input of a code for a given period of time when wrong codes are inputted more than a predetermined number of times.

Abstract: An electronic door locking system for an automotive vehicle which locks the vehicle doors when the driver depresses push-button type switches installed at an appropriate position on the outside of an automotive vehicle in accordance with a predetermined code, only after the vehicle has been kept parked in a safe state, e.g. after all the vehicle doors have been closed perfectly and/or when the parking brake has been applied to the vehicle securely or the gear shift lever has been set to Park position securely. The system according to the present invention comprises, in particular, a device for detecting unsafe-park states and another device for disabling the lock command signal in response to the unsafe-park signal from the detecting device, in addition to the conventional electronic door locking system.

Abstract: A steering lock assembly to lock and unlock a steering shaft by use of a key. The rotation of the rotor through key manipulation is controlled by a knob provided back of the steering lock assembly with a spacing to make impossible one-hand operation. Only when the knob is depressed, control means permits the rotor to rotate from an unlock position to a lock position with the result that car accidents due to inadvertent pulling out of the key on a down-hill ride is avoided.

Abstract: An engine starter circuit for an automotive vehicle provided with an automatic transmission such that an engine can be started only when the gear selector lever is in the park or neutral position, in particular, only when the gear selector lever is securely shifted into the park position. The engine starter circuit according to the present invention comprises a redundant park-position detection switch in addition to an engine-starter switch and an inhibitor switch including a park-position detection switch and a neutral-position detection switch, so that the pseudo-parking position caused by a mechanical play in a linkage mechanism can be reduced, with more reliable detection of the park position. The redundant park-position detection switch is a pin-actuated or a body-actuated selector microswitch positioned with respect to the gear selector lever of the automatic transmission and so constructed as to reduce the mechanical play inherent in the detection of park-position.

Abstract: A door locking system for an automotive vehicle including an anti-theft automatic door locking apparatus by which the door can automatically be locked a fixed time period after the door has been closed in the case where an ignition switch is open and the ignition switch is left at the steering-lock position. The door locking system according to the present invention comprises an ignition switch for detecting the state in which the engine is not operating, a door-close switch for detecting the state where the vehicle doors are closed, a timer for delaying the automatic locking of the doors for a fixed time period, and an AND gate, in addition to the conventional door locking system.

Abstract: An alarm system for an automatic transmission includes an alarm device and two or three control switches in a serial connection. One switch closes when the transmission selector lever is not in park position; the second switch closes when a condition preparatory to leaving the vehicle, such as door opening, is detected. The third, optional switch closes when an emergency brake is not securely engaged. Thus, an alarm is generated when the driver prepares to leave the vehicle with the transmission selector lever not in the park position. Redundant switches are disclosed for the first and second switches. Also, a holding relay is disclosed which maintains the alarm until the automatic transmission selector lever is shifted into the park position, by closing a shunt across the second switch whenever the alarm is produced.

Abstract: A mischief preventive electronic lock device has a mischief prevention system which prevents lock/unlock operation for a given period of time after a pushbutton input unit has been operated extraordinarily often in comparison with usual number of keystrokes required for entry of an input code. The electronic lock device is normally operated to lock/unlock a door matching by the input code with a preset code. The mischief prevention system is adapted to count the number of keystrokes from the input unit to perform the foregoing preventive operation whenever the keystroke count exceeds a predetermined value. The mischief prevention system permits further input after expiration of the given period. This discourages trial-and-error attempts to satisfactorily protect the electronic lock device from mischief.

Abstract: A shift lever control device for an automotive transmission by which a shift lever can be shifted from a Park position to a Reverse position or vice versa only when the park brake is in opertion and the engine has been started. The control device comprises a shift lever control means having a plunger and an electromagnetic actuation mechanism, an ignition key switch and a park brake switch, in addition to a conventional shift lever device having a shift lever, a position plate, a pin, and so forth. The ignition key switch, the park brake switch, and the electromagnetic mechanism are connected in series between a power supply and ground, so that if the park brake is released or the engine turned off, the electromagnetic mechanism is operated to actuate the plunger to drive the pin of the gear shift level into engagement with a Park position slot. The control device is also intended to prevent the dangerous situation when the shift lever is accidentally set to the park position while the engine is running.

Abstract: An electronic lock system is provided with an audible entry monitor for confirmation of entry of an input code and a mischief preventive circuit for disabling the audible entry monitor for a given period of time in response to an excessive number of inaccurate code input attempts. The audio signal generator is associated with a pushbutton input unit having a plurality of push buttons. The audio signal generator is adapted to produce an audible signal whenever an input code is entered through the input unit. The audible signal generator is also associated with a comparator for comparing the input code and a permanent code. The comparator is adapted to allow the system to change a voluntary code and operates the audible signal generator to produce another audible signal for a predetermined period while the system is capable of accepting entry of the new voluntary code to be preset.

Abstract: A safe remote-control door opening-and-closing device for an automotive vehicle by which the door can not be opened or the door now being opened is closed, even if the driver operates the door open switch, in the case where there exists an obstruction within a predetermined warning region near the vehicle door or around the vehicle. The safe remote-control door device according to the present invention comprises an obstruction sensor for detecting the presence of an obstruction, if any, and a switching unit for disconnecting the door open switch from the door driving device or for connecting the door open switch to the reverse revolution terminal of the driving device in order to close the door now being opened, in addition to a conventional remote-control door opening-and-closing device.

Abstract: A stopper is provided on the inner wire of a Bowden cable type arrangement. The stopper allows the wire to be pulled in a first axial direction to operate one of two latch mechanisms and engages a shoulder defined in the second latch mechanism when driven in a second axial direction to produce a reaction which causes the tubular housing disposed about the wire between the second latch mechanism and a single handled actuating mechanism, to flex and pull a lever of the second latch mechanism for operating same, whereby a single lever can be used to selectively operate two different mechanisms. .Iadd.