Abstract: A motor-vehicle door latch to avoid unnecessary sound emission, has its motor operated with pulse-width modulation so that, once a blockade time point is reached or prior thereto, the motor is energized with reduced power so that it generates a ramp characteristic running to a minimum. The torque and/or speed are thereby reduced along the ramp characteristic correspondingly.

Abstract: A latch is mounted between the inside and outside of a motor-vehicle door provided with a plurality of actuating elements and respective links extending from the elements and each having a respective movable part. The latch has latching and locking mechanism, a closed housing enclosing the mechanism and formed with a respective openings receiving free ends of the links, and seals in the openings engaged hermetically around the link free ends. The free ends are connected inside the housing to the mechanism. The housing includes a pair of housing parts that are hermetically joined to each other and the mechanism includes locking and latching elements received in the respective parts. The holes are all formed in one of the parts.

Abstract: A door latch for a motor-vehicle central-latch system has a housing, a locking element displaceable on the housing between a door-bolt-holding position and a door-bolt-releasing position, and a pawl displaceable on the housing between a retaining position holding the locking element in its bolt-holding position and a freeing position allowing the locking element to assume its bolt-releasing position. A release lever pivotal on the housing into an actuated position can put the paws into the freeing position. A outside operating lever is pivotal on the housing between actuated and unactuated positions and a main locking lever is pivotal on the housing by an electric motor between locked and unlocked positions.

Abstract: A motor vehicle has a body provided with at least one generally horizontal rail having a bent end portion and along which a sliding door is displaceable between a closed position in against the body and an open position out from the body. A sliding-door assembly has a door drive on the body including a flexible toothed belt extending along the rail and having an end and a link assembly fixed to the door, riding along the rail, connected to the belt end, and engaged in the bent end portion of the rail in the closed position of the door. A guide extends along the rail and laterally confines the belt so an actuator on the body can displacing the belt in one sense and thereby tension the belt and move the door in one direction and displace the belt in the opposite sense and thereby longitudinally compress the belt and move the door in the opposite direction.

Abstract: A motor-vehicle door latch has a housing and a locking mechanism in the housing having an inside locking lever displaceable between a locked position in which the latch is locked and an unlocked position in which the latch is unlocked. An output element rotatable about an axis on the housing is formed with a spiral main groove having a pair of ends and with a transverse connecting groove extending between the ends. A pin mounted directly on the locking lever rides directly in the spiral groove. A reversible electric motor can rotate the output element so that the pin travels between the ends of the spiral groove for displacing the locking lever into the locked position when the pin engages one of the groove ends and for displacing the locking lever into the unlocked position when the pin engages the other of the groove ends. A locking element connected to the inside locking lever displaces same manually between its positions with movement of the pin along the connecting groove between the spiral groove ends.

Abstract: A motor vehicle has a body, a door movable on the body between a closed position and an open position, an electric power source mounted in the body, and a latch having interengageable parts on the vehicle body and on the door engageable in a latched position to retain the door in the closed position, and an electrical actuator energizable to put the latch in an unlatched position. A drive on the body connected to the door is energizable from the source for moving the door between the open and closed positions and a battery is provided in the door separate from the body-mounted power source. An electronic controller in the door powered by the battery is connected to the latch actuator for operating same to unlatch the door and to a transmitter for transmitting a signal indicating the position of the door and of the latch.

Abstract: A door is aligned in an opening of a motor-vehicle in which is fixed a latch by first mounting in the door opening a keeper having a screw adjuster effective for horizontally displacing the keeper on the vehicle transverse to a normal vehicle travel direction, a bolt engageable with the latch and orbitable about a horizontal axis transverse to the normal vehicle travel direction through an arc having an outer pull-in section and an inner adjustment section, a drive including a motor for orbiting the bolt through its arc, and a controller connected to the motor for operating same. Then the door is carefully closed to engage the latch with the bolt and the door is pulled into the opening by orbiting the bolt by its motor through the outer pull-in section of its arc.

Abstract: A central control system for the door locks of a motor vehicle has a central unit connected to the door locks via a control line and the door locks each have a first electrically-operable actuator and a second electrically-operable actuator together enabling the "operate", "locked and unlocked", "antitheft mode on and off" and "child-safety mode on and off" operations. The door locks can be mechanically identical and can have a keeper pawl controlled both by the first actuator and an interior lever which is effective only when the second operator has displaced a lever from its ineffective position into an effective position.

Abstract: A motor-vehicle door latch has a door-mounted fork displaceable between an open and a fully latched position and through an intermediate semilatched position and a body-mounted door bolt engageable with the fork and retainable thereby only in the semilatched and fully latched positions. A door-mounted pawl can pivot about a pawl axis between a holding position engaging and retaining the fork in the fully latched and semilatched positions and a freeing position permitting the fork to move freely between its positions. A controller is connected to a servomotor in turn coupled to the door bolt for displacing same between an outer and an inner position so that, when the bolt is engaged with the fork in the fully latched position, movement of the bolt into the inner position pulls a door carrying the latch tightly closed. A switch lever can pivot about the pawl axis.

Abstract: An electrically-operated system for the locks of a motor vehicle as a remote controller with a multifunction push button which, when first operated, locks the vehicle doors and sets a time window open within which a second actuation of the button will provide the antitheft mode. This arrangement allows a single push button to be used for both locking and antitheft operations.

Abstract: A control system for electrical components of a motor vehicle has an emergency battery and emergency circuitry which, when the starter battery fails, connects the control unit to the emergency battery and cuts off comfort functions like window lifters while allowing the basic control mode to operate in which door locks, a theft alarm and a lid lock for the compartment containing the starter battery remain operative.

Abstract: A centralized lock system for a motor vehicle, provided with a system-specific identity code word which is stored in memories of the satellite processors associated with the door locks as well as in the code word storage memory of the central processor and the code words are transmitted back and forth along the base or line connecting the electronic controller with the door locks. An identity test is effected at these memories and upon failure of the identity test, the door lock and/or electronic controller or all of the door locks and preferably also the electronic controller are deactivated. This prevents ready replacement of the components since the system will not recognize a foreign component and deactivation will occur upon an attempt to substitute a foreign component for one of the original family of components of the system.

Abstract: A motor-vehicle door latch has a pivotal fork and a latch element interfittable in a latched position and disengageable from each other in an unlatched position, a latch pawl engageable in a holding position with the fork to retain same in the latched position and disengageable in a releasing position from the fork to allow the fork to move into the unlatched position, and a pawl-actuating lever coupled to the pawl for displacing same between its holding and releasing positions. An inside actuating element and an outside lock cylinder can each displace the pawl between its positions. An actuator connected to the lever and electrically energizable from a rest position to an energized position displaces the pawl from its holding to its releasing position. A bistable relay having an input connected to a vehicular power supply and an output is displaceable between a closed position connecting its input and output together and an open position electrically disconnecting its output from its input.

Abstract: A motor-vehicle door latch having an element settable in locked, unlocked, and open positions, has an actuating assembly having a pivot defining a pivot axis remote from the latch. An inside locking lever mounted on the pivot has an outer end to one side of the pivot and an inner end to the opposite side of the pivot and a bowden cable is connected between the outer end and the latch element and connects the latch element with the inside lever for joint pivoting between the locked, unlocked, and open positions. An inside actuating lever is mounted on the pivot coaxial with the locking lever. A coupling between the levers is displaceable between a coupling position for displacing the locking lever and bowden cable and thereby setting the element in the open position on pivoting of the actuating lever and a decoupling position for pivoting of the actuating lever without pivoting of the locking lever.

Abstract: A motor-vehicle door latch has a housing and a locking mechanism in the housing having an inside locking lever displaceable between a locked position in which the latch is locked and unlocked position in which the latch is unlocked. An output element rotatable about an axis on the housing is formed with a spiral main groove having a pair of ends and with a transverse connecting groove extending between the ends. A pin mounted directly on the locking lever rides directly in the spiral groove. A reversible electric motor can rotate the output element so that the pin travels between the ends of the spiral groove for displacing the locking lever into the locked position when the pin engages one of the groove ends and for displacing the locking lever into the unlocked position when the pin engages the other of the groove ends. A locking element connected to the inside locking lever displaces same manually between its positions with movement of the pin along the connecting groove between the spiral groove ends.

Abstract: A motor-vehicle door has an outer skin and an inner skin fixed to the outer skin, forming therewith a cavity, and formed with a cutout. A mechanism holder is releasably secured in the cavity at the cutout. A latch is secured by a horizontally effective slide mount on the holder and can move via the mount horizontally on the holder and be fixed on the holder in any of a plurality of horizontally offset positions thereon. A detent engaged between the slide mount and the latch releasably secures the latch in one of the positions. The slide mount includes a pair of interfitting and horizontally extending rails respectively fixed to the holder and to the latch.

Abstract: A door latch has a main housing holding latching element that can retain it in a latched or an unlatched position. A manual actuating mechanism is movable in the main housing between actuated and unactuated positions and a coupling part on the main housing can move between a coupling position connecting the actuating mechanism to the latching elements for displacement of them into the unlatched position on displacement of the actuating mechanism into the actuated position and a decoupling position for disconnecting the actuating mechanism from the latching elements. A central locking element on the main housing is movable between locked and unlocked positions and a locking mechanism jointly movable with the locking element can displace the coupling part into the decoupling position on displacement of the central locking element into the locked position and for displacing the coupling part into the coupling position on displacement of the central locking element into the unlocked position.

Abstract: A motor vehicle having a plurality of pivotal doors and a sliding door each movable between a closed and an open position has a lock system with a respective lock on each of the doors having an electrical motor energizable to set the respective lock in a locked position and in an unlocked position. A sensor at the sliding door produces a closed-door output when the sliding door is closed and an open-door output when the sliding door is open. Contacts on the sliding door are connected to the respective motor and contacts on the vehicle are engageable with the sliding-door contacts only in the closed position of the sliding door. A command unit can generate a lock-doors output and an unlock-doors output and an electrical controller is connected to the sensor, to the command unit, to the pivotal-door motors, and to the motor-vehicle contacts for energizing the pivotal-door motors to place the pivotal-door locks in the locked position after generation of the lock-doors signal.

Abstract: A motor-vehicle lock system has a remote operator separate from the motor vehicle and having a key part having a predetermined bitting, a transmitter actuatable to transmit a main signal containing a main code word, and a transponder independent of the transmitter for receiving an interrogation signal and thereupon generating a callback signal containing a callback code word. A lock provided with a switch is actuatable mechanically by the key part to operate the switch. A receiver in the motor vehicle connected to a central lock controller receives the main signal including the main code word, extracts the main code word from the transmitted main signal, compares the extracted main code word with a predetermined main code word, and sends a release signal to the controller when the extracted main code word corresponds to the predetermined main code word to actuate the elements.

Abstract: A motor-vehicle door latch has a molded synthetic-resin housing having a floor side plate, a perimeter wall projecting laterally from an inside face of the plate, and a cover plate. The housing is unitarily formed with a plurality of pivots. Mechanism inside the housing includes a latching fork, a latching pawl, and operating levers mounted on respective pivots. A metal reinforcing plate is imbedded in the floor side plate only in the region of the fork and pawl and is unitarily formed with upstanding tabs extending into and imbedded in the pivots of the fork and pawl only. The pivots of the operating levers are substantially wholly formed of the plastic of the housing.