Abstract: A door latch system includes an exit device having a housing mounted to an unsecured side of a door. A latch assembly is mounted in the housing and includes a latch for releasably securing the door in a door frame. An actuating assembly includes a driving member. A push bar is configured to be received within the housing. Relative movement between the push bar and base plate so as to reduce the distance between the push bar and base plate moves the driving member and latch to release the door from the door frame. A dashpot is connected to the driving member and configured to allow movement of the driving member when the push bar is manually depressed but to resist movement of the driving member when a secure side of the door experiences a high velocity impact. A method of resisting unwanted unlatching of the latch is also disclosed.

Abstract: A door lock device is provided and includes: a lock assembly having a first lock structure and a second lock structure; an acting assembly interlocked with the first lock structure and the second lock structure; and an operation assembly interlocked with the acting assembly so as to unlock the first lock structure and the second lock structure synchronously. Therefore, when the lock assembly is in the form of top and bottom locks, the top and bottom locks can be unlocked at the same time, so as to allow an escape door to be opened quickly, thereby facilitating emergency escape.

Abstract: A force adjustment mechanism configured for use with an exit device including a pushbar having an extended position and a retracted position. With the pushbar in the extended position, the pushbar resists movement toward the retracted position with a net resistive force. The force adjustment mechanism is operable to adjust the net resistive force.

Abstract: A lock assembly is provided and includes: a driving member; an acting member connected to the driving member; an active member cooperating with the acting member for operation; and a main lock member interlocked with the active member. The driving member drives the acting member to swing and the acting member touches the active member so as to displace the active member and synchronously displace the main lock member. Therefore, the lock assembly is buried in a door frame through cooperation of the driving member, the acting member and the active member, so as to be protected from being damaged or stolen.

Abstract: A motor-vehicle lock has a latch mechanism, catch, has and an actuating lever, of which the actuation from a starting position into an actuating position makes it possible to disengage the catch, wherein the motor-vehicle lock has a crash element, which can be adjusted from a normal state into a crash state, in which the crash element blocks the actuating lever in a blocking position or uncouples it from the catch, wherein the crash element is coupled to the actuating lever such that, when the actuating lever is actuated at an actuating speed above a limit actuating speed, the crash element latches in the crash state. With the crash element latched in the crash state, a restoring action of the actuating lever into the starting position causes the latching action to be reversed and the crash element to be adjusted into the normal state.

Abstract: A door latch system comprises an interchangeable latch assembly for securing a door to a door frame. The interchangeable latch assembly comprises a head and a latch mounted to the head. The latch is moveable between latched and unlatched positions. A driven member is operatively connected to the latch, the driven member moveable to latch or unlatch the latch. The door latch system further comprises a universal actuating assembly removably couple-able to the interchangeable latch assembly. The universal actuating assembly comprises a mounting bracket and a driving member releasably coupled to the driven member. Actuation of the universal actuating assembly translates the driving member and the driven member, moving the latch to the unlatched position. A first interchangeable latch assembly may be swapped with a second interchangeable latch assembly without requiring modification of the universal actuating assembly.

Abstract: A bar handle with incorporated lock having a tubular element for gripping a handle, installed on a face of a door by way of interposition of at least one spacer element, and a lock which is at least partially contained inside the tubular element. The handle includes a release device for releasing the lock, which is configured to be operated manually with a pusher element installed on the tubular element. the handle comprises a release device for releasing the lock, which is configured to be operated manually with a pusher element installed on the tubular element.

Abstract: An exemplary electronic actuator assembly is configured for use with a pushbar assembly having a drive assembly operable to retract a latchbolt, and includes an input shaft, a motor, and a boost spring. The motor has a retracting state in which the motor drives the input shaft from a proximal position to a distal position, a holding state in which the motor exerts a holding force to retain the input shaft in the distal position, and a releasing state in which the motor exerts a residual force that resists movement of the input shaft. The boost spring exerts a boost force urging the input shaft in the proximal direction to at least partially counteract the residual force.

Abstract: A latch dogging assembly comprises an electromagnet and an actuator mounted on a bracket. A guide slide is pivotally mounted on the bracket with a lead block coupled to the guide slide. A guide pin rides along an inner surface of the bracket causing the guide slide to pivot. A pawl is slidably engaged with the guide slide. A guide link includes a post. An armature is mounted to the panic bar and the post engages the pawl. When the actuator is energized to move the lead block, the pawl engages the post to pivot the armature and thereby cause the panic bar to move from the extended position to the depressed position. When the electromagnet is energized the armature is magnetically held preventing reverse pivoting of the guide link. A method for fully retracting a door latch is also provided.

Abstract: An exit device according to one embodiment includes a plurality of sensors and an electronic dogging mechanism. The exit device is configured to locally analyze sensor data to determine the security state of the exit device, report data to a management system via a wireless communication channel established between the exit device and the management system, and receive and process instructions to perform an electronic dogging operation.

Abstract: A panic bar latch release assembly is disclosed having an inside latch release and an outside pull type handle latch. The handle latch includes a main housing having a pivotal pull handle. The inside latch release includes a first bar mount, a second bar mount, and an elongated push bar. The first bar mount has a support bracket with a floor with a first stop wall and an extended portion with a push rod guide hole extending therethrough. A body portion is coupled to the support bracket which includes a handle mount channel which is partially defined by a second stop wall. A handle mount is pivotally coupled to the body portion. An elongated push rod is positioned within a push rod channel of the door so as to extend through the push rod guide hole.

Abstract: A latch dogging assembly comprises an electromagnet and an actuator mounted on a bracket. A guide slide is pivotally mounted on the bracket with a lead block coupled to the guide slide. A guide pin rides along an inner surface of the bracket causing the guide slide to pivot. A pawl is slidably engaged with the guide slide. A guide link includes a post. An armature is mounted to the panic bar and the post engages the pawl. When the actuator is energized to move the lead block, the pawl engages the post to pivot the armature and thereby cause the panic bar to move from the extended position to the depressed position. When the electromagnet is energized the armature is magnetically held preventing reverse pivoting of the guide link. A method for fully retracting a door latch is also provided.

Abstract: An auto-latching latch assembly is mounted to a follower door of a double door. The latch assembly includes a latch movable between an unlatching position and a latching position and a movable member jointly movable with the latch. A positioning member is jointly pivotable with the movable member. When the latch moves to the unlatching position, the positioning member positions the latch in the unlatching position. When the follower door is closed while a primary door of the double door is closed, an actuation latch presses against and releases the positioning member to move the latch to the latching position, reliably locking the follower door.

Abstract: A locking device for a door located at a door frame having a door strike. The locking device includes an actuator having a neutral position and a displaced position, and a latchbolt assembly having an extended position configured to engage the door strike, and a retracted position configured to move past the door strike. The latchbolt assembly includes a latchbolt link configured to move the latchbolt in response to movement of the actuator. A first dampening device is disposed adjacent to the latchbolt link, with the dampening device resiliently engaging the latchbolt link as the latchbolt link moves from the retracted position to the extended position. The first dampening device limits movement of the latchbolt link. A second dampening device is configured to restrain movement of the latchbolt during movement from the retracted position to the extended position.

Abstract: A card reader which reads information recorded on a card may include a plurality of units having overlapping operation periods; and a control unit structured to operate each of the plurality of units by a plurality of drive powers. The control unit may be configured to control the plurality of units so that periods in which the drive powers of each of the plurality of units are maximum do not overlap.

Abstract: An electronic lock housing for the inside surface of a door with an opening therethrough has an interior portion for receiving electronic components for a door lock, a back portion with channels, a bracket, a plug, and a front portion. The back portion is meant for securing onto the door surface and has an opening meant for alignment with the door opening. The channels in the back portion permit air from the outside of the door to flow through the door opening and housing back opening to the inside of the door without passing through the housing interior. The bracket secures the back portion to the door and receives the plug to create an air-tight seal within the housing interior. The housing front portion is secured over the assembled back portion, bracket, and plug once they are installed to the door surface, fully encasing the electronic components.

Abstract: A compact door barricade apparatus for use on doors is described. The apparatus is equipped with a protective inner case, outer case, door mount, an upper barricade, a lower barricade, barricade pivot links, handles, and barricade latches. Screws or lag bolts are used to mount the barricade latches to the door frame. The door mount connects the apparatus to the door. The barricade pivot links effectively link the movement of the upper barricade to that of the lower barricade. The movement of the handle disposed on the apparatus facilitates the synchronous movement of the upper and lower barricades across the width of the door and door frame, effectively securing individuals within a room.

Abstract: A cooler access control system locks a cooler when occurrence of an event is detected that requires limiting access to the inside of the cooler. Examples of such events include the loss of power to the cooler for a predetermined period of time, the opening of the cooler door for longer than an allowed time, the loss of functionality of a temperature probe and others. In an embodiment, a service mode is supported wherein the door is left unlocked despite the occurrence of such an event, to allow a stocker or other personnel to leave the cooler door open while stocking the cooler with product.

Abstract: A cooler access control system locks a cooler when occurrence of an event is detected that requires limiting access to the inside of the cooler. Examples of such events include the loss of power to the cooler for a predetermined period of time, the opening of the cooler door for longer than an allowed time, the loss of functionality of a temperature probe and others. In an embodiment, a service mode is supported wherein the door is left unlocked despite the occurrence of such an event, to allow a stocker or other personnel to leave the cooler door open while stocking the cooler with product.

Abstract: An exit device located in a door frame having a door strike including a latchbolt assembly, a pushbar assembly, and a link assembly. The latchbolt assembly includes an extended position configured to engage the door strike, and a retracted position configured to move past the door strike. The pushbar assembly moves from a released position to a pressed position to move the latchbolt assembly from the extended position to the retracted position. The link assembly is operatively connected to the pushbar assembly and includes a security link having an elongated aperture and a pin configured to extend through the elongated aperture about which the security link rotates. A keeper surrounds the pin and supports the security link for rotation. In the event of extreme heat, the keeper melts and the security link moves to a position to substantially prevent opening of the door.

Abstract: A vehicle door latch device comprises a latch that can engage with a striker; a ratchet that engages with the latch to hold a door closed; a stationary stopper; a first lever pivotally mounted on a first shaft to rotate from an initial position in a releasing direction; a first spring that biases the first lever toward the initial position, a second lever supported to the first lever on a second shaft and rotating between an initial position where the second lever cannot contact the stationary stopper and a blocking position where the second lever can contact the stationary stopper and prevents the first lever from rotating in the releasing direction; and a second spring that biases the second lever toward the initial position with a force greater than a biasing force of the first spring.

Abstract: A hand-held controller includes a controller body having a front and a back, with at least one thumb control on the front of the controller body. A back shell on the back of the controller body has left and right portions, each having top and bottom regions. A first force sensitive resistor (FSR) underlies the top region of the left portion of the back shell. A second FSR underlies the bottom region of the left portion of the back shell. A third FSR underlies the top region of the right portion of the back shell. A fourth FSR underlies the bottom region of the right portion of the back shell.

Abstract: Door sensor hardware is provided that automatically senses the orientation of a door. The door sensor hardware includes electronic circuitry and sensor(s). The sensor(s) determine a current orientation of a door (open, closed, ajar), recent movement, door swing speed, and door acceleration. The door sensor hardware is in communication with at least remote device. The remote device includes a user display to facilitate calibration of the door sensor hardware by a user. The remote device also provides the user with the door orientation as determined by the door sensor hardware.

Abstract: An over-travel mechanism configured to couple an input shaft and an output shaft in an exit device assembly. The input shaft is connected to an actuator that linearly displaces the input shaft, and the output shaft is connected to a locking member of the exit device. The over-travel mechanism includes a link coupled to the output shaft, and a preloaded elastic member transmits force between the input shaft and the link. Movement of the input shaft from a first input shaft position to a second input shaft position causes the elastic member to urge the link from a first link position toward a second link position. Movement of the input shaft from the second input shaft position to a third input shaft position causes the elastic member to elastically deform without moving the link from the second link position.

Abstract: A system and technique for visual indicator status recognition includes an imaging system configured to capture a first optical data of an indicator, the imaging system configured to verify indicator code indicia is derivable from the first optical data. Responsive to verifying that the indicator code indicia is derivable from the first optical data, the imaging system is configured to capture a second optical data of the indicator. The system and technique also includes a detection module executable by a processing unit to analyze the second optical data and derive status information of the indicator.

Abstract: An inner operating device for a door lock is mounted to an inner side of a door and includes a first detecting member electrically connected to an electric driving device. A second detecting member is mounted in a latch device of the door lock. When the first detecting member detects an external force applied to the inner operating device, the electric driving device is activated, and the latch is moved to the unlatching position. When the latch device is set to be in a locked state or an unlocked state, the second detecting device outputs a signal to a lighting device to emit light for indicating the locked or unlocked state. In another example, the lighting device emits light of a first color when the latch device is in the locked state and emits light of a second color when the latch device is in the unlocked state.

Abstract: An emergency access system comprising a structure having therein at least two rooms with at least one common wall between them and an exterior wall, at least one bi-directional access opening defined in at least one selected from an exterior wall and common wall, a sheet of material with a bi-directional breakaway panel sized to substantially fill the access opening, the sheet affixed and in-line to at least one wall, the breakaway panel is a double panel, one panel on each side of an internal framed structure allowing entry from either room, and at least one bi-directional breakaway mounting fastener retaining each panel within each opening and, under pressure, breakably releasing the panel whereby an access opening enables a person in an emergency to release the breakaway mounting panel by applying pressure to the panel, thus allowing emergency access.

Abstract: A panic exit door lock includes an outer operational device mounted to an outer side of a door, an inner operational device mounted to an inner door of the door, a lock mounted in the door, and a locking mechanism mounted between the inner and outer operational devices and the lock. The locking mechanism includes an outer cylinder mounted to the outer operational device and an inner cylinder mounted to the inner operational device. An indicator member is operably connected to the inner cylinder and a setting member. The setting member is connected to a transmission block. When a key is used to set a locking function of the inner or outer cylinder, the transmission block and the indicator member pivot jointly. A user can see whether the locking function is set by observing the position of the indicator member via a window of an inner cylinder seat.

Abstract: A door device of a small-sized vehicle, that enables easily interlocking a door lock and a lever is provided. An openable door 70 is provided to a side of a body, a lever 92 provided inside the door 70 for opening the door 70 is swingably provided, and a rotational central axis of a lever supporting shaft 120 turned by a swing of the lever 92 and a rotational central axis of a latch for a door lock (a lever member 144) driven by a turn of the supporting shaft 120 are made the same.

Abstract: A handle is supported by a hollow tube so as to be movable in the direction in which the handle is pushed toward a hollow space. A hole leading to the hollow space of the hollow tube has a first hole portion located at one end of a base portion extending in a longitudinal direction L of the hollow tube and a second hole portion extending from the first hole portion to a portion corresponding to the other end of the base portion in the longitudinal direction L. A dimension W2b of a grip portion of the handle in a width direction W is greater than a dimension W2a of the base portion of the handle in the width direction W and greater than a dimension W1a of the second hole portion in the width direction W.

Abstract: Automatic doors have become commonplace in hospitals or retirement homes to facilitate entry into auxiliary rooms, such as bathrooms. Unfortunately, when a patient becomes incapacitated inside the bathroom, the door often becomes obstructed by the patient, making entry into the bathroom through the door impossible without further injuring the patient. In many instances removal of adjacent walls is required to gain entry into the room. The automatic door of the present invention includes a retractable door stop enabling reverse rotation of the door, and sensors for automatically setting and resetting the automatic door controls when the door is opened and closed in either direction.

Abstract: In response to receiving information regarding an unsafe condition from portable electrical energy storage device (e.g., battery) safety sensors, a locking mechanism controller determines whether the battery is in a desired state to, as a safety measure, have the compartment that holds the battery locked and/or to send a signal to reduce or eliminate current draw from the battery. If the locking mechanism controller determines the battery is in the desired state to have the compartment locked, then it sends a signal to a compartment locking mechanism causing the compartment locking mechanism to lock the compartment in which the battery is located to prevent a user from opening the compartment, and thus helps protect the user against the unsafe condition. In some embodiments, the unsafe condition may be a potential or existing catastrophic failure of the battery in the compartment (e.g., a meltdown, explosion or dangerous leak, etc.).

Abstract: A decompression panel for use in a door of an aircraft disclosed herein includes bi-directional latching mechanisms. A differential pressure sensor disengages upon a decompression event in a compartment of an aircraft, allowing latch hooks to disengage from a panel latch of the decompression panel. Once disengaged, the decompression panel can rotate to vent air in a compartment of higher pressure to the compartment experiencing the decompression event.

Abstract: A push/pull operating device includes first and second operational devices mounted to two sides of a door. The first operating device includes a first bracket having a plurality of non-circular mounting holes. Two engaging rods extend through two of the mounting holes of the first bracket, the door, and a latch device mounted in the door. Each engaging rod has a limiting portion fixedly received in one of the mounting holes. A head of each engaging rod presses against the first bracket. The second operational device includes a second bracket having a plurality of non-circular mounting holes. A bolt is extended through one of the mounting holes of the second bracket and the door and engaged with one of the engaging rods. A head of each bolt presses against the second bracket. Thus, the first and second brackets are securely fixed to the sides of the door.

Abstract: An active hood latch apparatus for a vehicle includes a latch for locking or unlocking a striker connected to a hood; a base panel installed such that the latch can be rotated; a lever member rotatably installed in the base panel, the striker locked by the latch being located in a rotational path thereof; a locking part rotatably installed in the base panel to restrain movement of a guide pin, and to release the restraint of the guide pin in conjunction with the rotation of the lever member; and a driving part rotating the lever member by a force larger than a restraint force of the locking part that restrain the guide pin, to supply power to raise the striker, and then absorbing an impact.

Abstract: An anti-ligative ergonomic type door-knob primarily of the institutional type, essentially serving to defeat the effort of a temporarily mentally-depressed room occupant from succeeding in committing self-hanging via contrived ensnaring by which to secure a cord like hanging-noose. Generic-variant embodiments of my anti-ligative doorknob are set forth, including both a circular and semi-circular escutcheon-plate for I-shaped V-shaped Y-shaped X-shaped fin-levers, and also a non-finned hemispherical iteration. The novel critical minimum approximate 40-degree anti-ligative principle of my LIFESTAR™ doorknobs reliably prevents a person ensnaring any heretofore problematically hazardous to portion of the door-knob assembly, while my optionally cooperating door latchbolt is formed to a matching critical minimum approximate 40-degree anti-ligative tri-beveled latchbolt as well.

Abstract: The invention is directed to a motor vehicle lock for a motor vehicle door arrangement, wherein a pivotable catch and an inlet mouth for a lock striker are provided, wherein the catch can be brought into at least one closed position and into at least one open position, wherein the catch as such in its closed position may hold the lock striker by a holding engagement between the catch and the lock striker and in its open position may release the lock striker, wherein during a closing cycle the lock striker comes into an actuating engagement with the motor vehicle lock such that the catch moves from its open position into its closed position.

Abstract: A fire bolt assembly (10) includes a receiving tube (117) mounted in a door (106). A mounting member (32) is mounted to the receiving tube (117). A positioning bolt (151) is received in the receiving tube (117). A stop member (58) is securely mounted in the mounting member (32) to hold the positioning bolt (151) in the receiving tube (117). The front end (153) of the positioning bolt (151) is moved out of the receiving tube (117) by a spring (100) to engage with a coupling hole (116) in another door (112) or a door frame when the stop member (58) melts due to the heat of a fire, locking the door (106) in place during the fire. A stick (175) in the receiving tube (117) is moved to a blocking position preventing the front end (153) of the positioning bolt (151) from disengaging from the coupling hole (116).

Abstract: A latch assembly includes a latch having a body. A stop having a lower melting point is received in an engagement hole of the body. An ear is pivotable between a storage position in a transverse groove of the body and a blocking position partially extending out of the transverse groove. A pressing pin is slideably received in a longitudinal hole in the body. The ear is located in the storage position when the pressing pin is in a non-pressing position, allowing pivotable movement of the latch between a latching position and an unlatching position. When the latch is in the latching position and the ear is in the storage position, if the stop is melted by heat, the pressing pin is moved from the non-pressing position to the pressing position and pivots the ear to the blocking position, retaining the latch in the latching position.

Abstract: A retractor element includes a rigid slide connected between a latch bolt and a solenoid plunger for movement between a first position and a second position, the slide operably connected to plunger. A pivoting link defines a slot having an inner end portion extending transversely, the slot configured for pivoting the link when the slide moves between the first position and the second position of the slide. When the retracting mechanism is energized the plunger retracts causing movement of the slide to the second position of slide and the pin to enter the transverse end of the slot in the link. A bearing surface intersects the path of movement of the pin such that significantly less current is required for retaining the plunger in the retracted position than to retract the plunger for blocking the return of the latch bolt to the projected position.

Abstract: An active hood latch device for a vehicle may actively reduce a pedestrian injury value by uniformly lifting up a front end portion of a hood of the vehicle by directly popping up a striker in case of a pedestrian collision accident. Such an active hood latch device may include an actuator for generating power for lifting up a striker locked by a passive latch, an actuator cooperating portion installed to connect the striker with the actuator and to lift up the striker in cooperation with the actuator when the actuator operates, and an electronic controller for operating the actuator upon receiving a sensing signal from a collision sensor that senses pedestrian collision.

Abstract: A lock can include a catch and a pawl. The catch can be brought into an opening position and a closed position. The catch can be brought into holding engagement with a lock striker. The pawl may be brought into a position, where it is in blocking engagement with the catch. The pawl may be deflected into a release position. A pawl actuation lever is provided. A switchable lock arrangement in an unlocked state can be included. A first drive train component is decoupled from the pawl for letting the pawl actuation lever run free without deflecting the pawl or a first drive train component is blocked for blocking an actuation of the pawl actuation lever. A crash condition causes the switchable lock arrangement to be in the locked state such that during the crash condition a crash induced actuation of the pawl actuation lever runs free or is blocked.

Abstract: A striker for use with a vehicle having a lock element, which comprises an engagement portion engageable with the lock element and a reinforcing bracket disposed relative to the engagement portion of the striker, such that a predetermined space is provided between the reinforcing bracket and engagement portion. When a relatively small load is applied via the lock element to the engagement portion, an impact energy of the load to body side of the vehicle is absorbed by the striker in a period of time during which the engagement portion is deformed within the predetermined space. If the load is great, the engagement portion is deformed over that space and contacts the reinforcing bracket, thereby being prevented against further deformation, such that an impact energy of the great load to the body side of vehicle is absorbed and reduced in the striker and reinforcing bracket in a stepwise way.

Abstract: An apparatus provided for releasing the dogging function of a panic device for an exit door without the use of a key or other external device includes an end cap button; an adjustable connecting rod assembly; and a modified latch plate; Depressing the end cap button pushes the rod assembly to rotate the modified latch plate to release the dogging function of the panic device.

Abstract: A lockable strike for walk-in cold rooms includes a housing that has a mounting plate, a cover and a deadbolt moveably engaged therein to reciprocally move along a path of travel between an extended position and a retracted position with respect to the housing. The mounting plate includes a base and a bridge defining a tongue channel through which the deadbolt travels. The mounting plate base is made of a metal for strength while the cover is made of a plastic for thermally insulative purposes.

Abstract: An inertial blocking member subassembly is activated by an inertial force vector. A release handle assembly has a framework, a door handle grip, and a bell crank actuator. The subassembly has a blocking member and a biasing element. The blocking member is associated with the framework, and movable in at least one of rotation about an axis of rotation and translation. The biasing element is associated with the blocking member for biasing the blocking member to a first position. The blocking member center of gravity is offset from the axis of rotation. When the force vector acts on the center of gravity, the blocking member can rotate into a second position. When the center of gravity, axis of rotation, and force vector are aligned, the blocking member remains in the second position until the force vector has attenuated. The biasing element can rotate the blocking member to the first position.

Abstract: Safety device comprising an inertial mass (1) pivoted to a frame (2) for rotating around an axis (4), wherein elastic means (6) act on the inertial mass (1) for opposing its rotation, a wedge (12) being arranged in the frame (2) so that the inertial mass (1), when it rotates around this axis (4), slides along the inclined wall of the wedge (12), so as to axially move the inertial mass (1) along this axis (4).

Abstract: An electric latch retraction device comprising a housing for receiving a plurality of internal components of the electric latch retraction device. An actuator mechanism is included in the housing, the actuator mechanism is adapted to impart linear movement on a latch, such that the latch is retracted towards the housing. A holding mechanism is also included in the housing, the holding mechanism holds the latch in a fully retracted position.

Abstract: A lock with a locking mechanism comprises a rotary catch, a pawl for engaging the rotary catch, a blocking lever capable of blocking the pawl if the latter is located in its catching position, and a releasing lever for opening or releasing the locking mechanism. When the releasing lever is actuated, the pawl and, if applicable, the blocking lever is moved out of its blocking position provided that the releasing lever is moved in a usual manner and the releasing lever is not exposed to increased or excessive accelerations. In case of an increased or excessive acceleration of the releasing lever such as caused by a crash or impact, an arresting device prevents the releasing lever from disengaging the pawl and optionally the blocking lever of the pawl. The arresting device is further releasable with the return of the releasing lever to the initial rest position.

Abstract: The invention is directed to lock for a vehicle door arrangement, wherein a catch and a pawl are provided. The catch can be brought into an opening position and into a closed position, wherein the catch, which is in the closed position, is or may be brought into holding engagement with a lock striker. The pawl may be brought into an engagement position. A pawl actuation lever is provided for deflecting the pawl into the release position. A switchable coupling arrangement comprises a first coupling lever on the side of the pawl actuation lever, a second coupling lever on the side of the pawl and a moveable coupling element that may be moved into a closing position for a coupling engagement with the two coupling levers and into an opening position for decoupling the two coupling levers.