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Emergency operating means

Subclass of:

292 - Closure fasteners

292002000 - BOLTS

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Class / Patent application numberDescriptionNumber of patent applications / Date published
292092000 Emergency operating means 50
20090127869ELECTRONIC PUSH RETRACTION EXIT DEVICE - An electronic push retraction exit device includes a support rail, a push rail and a latch mechanism having a latch bolt operably connected to the push rail and movable between latched and unlatched positions. A control circuit in the exit device drives a linear actuator to retract and hold the push rail and the latch bolt in the unlatched position. The linear actuator preferably includes a stepping motor and is connected to the push rail through a lost motion connection allowing the exit device to be mechanically operated without moving the linear actuator. The control circuit preferably includes an electrical adjustment for the retraction distance of the latch bolt and an adjustable relatch timer. The exit device may be operated by a remote switch attached to a control connection, which may be permanently closed to simulate a prior art electrically operated exit device for compatibility with third party control systems.05-21-2009
20090174194Dogging Device for Latch Assembly - A dogging device includes a base mounted in a housing of a latch assembly. The base includes a hole through which a shaft rotatably extends. A limiting keyway extends from the hole and receives and limits rotation of a shaft key on the shaft. A dogging member includes a through-hole receiving the shaft. A keyway extends from the through-hole and receives the shaft key of the shaft, allowing joint rotation of the shaft and the dogging member. By engaging a tool with a driving groove in an end of the shaft or by utilizing a lock core key to turn a lock core that directly pivots the dogging member, the dogging member is pivotable between a first position engaged with a latching/unlatching control rod of the latch assembly to lock a latch bolt in a retracted state and a second position disengaged from the latching/unlatching control rod.07-09-2009
20090302617SAFETY INTERLOCKING DEVICE WITH ESCAPE UNLOCKING MEANS - A safety interlocking device has a locking unit for mounting on the safe side to a door relative to a hazardous region, and a locking cage for mounting on a door frame interacting with the door. In order to be able to open, from the hazardous region, the locked door and escape from the hazardous region, an escape unlocking device is provided for unlocking the safety interlocking device. The locking cage has a locking stop which is articulated to a base plate so as to be able to pivot about a pivot axis from an interlocking position into an emergency opening position. The escape unlocking device possesses at least one arresting tip which, in an escape position, releases the locking stop for pivoting into the emergency opening position. Provided between an emergency handle and the arresting tip is a stretched rod piece which is embodied so as to be displaceable together with the arresting tip. In the normal position of the escape unlocking (EU) device, the arresting tip is in arresting operative connection with a first arresting surface of the locking stop and a second arresting surface of the base plate. At least one of these operative connections can be released by displacement of the arresting tip in the rod direction.12-10-2009
20090309374Outside door grip, in particular for vehicles - The invention relates to an outside door grip, in particular for vehicles. The outside door grip exhibits a manually actuated handle, which engages a lock disposed in the door upon actuation. In addition, a pivotable blocking member serving as a mass blockage is furnished, which blocking member is disposed generally in its ineffective disengagement position, wherein the handle remains actuatable, which blocking member moves into an effective blocking position based on the inertia of its mass in case of a crash and thereby blocks the handle. Furthermore means are furnished which take care that the blocking member remains at least so long in its blocking position in case of a crash, until oscillations caused by the crash and acting on the outside door grip and/or the handle, have decayed so far that an effective actuation of the handle by the oscillations is not any longer possible.12-17-2009
20100007154EXIT DEVICE - An exit device includes a housing, a latchbolt coupled to and movable relative to the housing, and an auxiliary bolt coupled to the housing and movable relative to the latchbolt. The exit device also includes a deadlock link coupled to the housing and movable relative to the latchbolt and the auxiliary bolt between a first position, in which the deadlock link allows movement of the latchbolt relative to the housing, and a second position, in which the deadlock link inhibits movement of the latchbolt relative to the housing. The exit device further includes a spring biasing the auxiliary bolt into engagement with a portion of the deadlock link to move the deadlock link toward the first position.01-14-2010
20100026012Press bar mechanism - A press bar mechanism includes a latch bolt slidably attached to a housing, a pressing bar slidably attached to the housing and coupled to the latch bolt, a rod slidably received in the housing and coupled to the latch bolt, a casing disposed in the housing and having a compartment for receiving a spring member and a follower and having a helical groove communicating with the compartment of the casing, a guide pin secured to the follower and engaged in the helical groove of the casing for cushioning the movement of the follower relative to the casing and also for cushioning the pressing bar and for preventing the press bar from generating sounds or noises.02-04-2010
20100045050DOOR LOCK - This invention relates to a door lock comprising a lock body (02-25-2010
20100066102Adjustable Sliding Device for Panic Exit Door Lock - A lock for a door includes a latch to which an end of a connecting device is operably coupled, so that movement of the connecting device in a vertical direction causes movement of the latch between locking and unlocking positions. A base is fixed to the door, and a slide is slideably mounted to the base along the vertical direction. An adjusting block is coupled to the other end of the connecting device to move therewith. An adjusting screw is rotatably extended through the slide and threadedly coupled to the adjusting block so that movement of the slide in the vertical direction causes movement of the adjusting block and the connecting device in the vertical direction. Rotation of the adjusting screw causes movement of the adjusting block and the connecting device in the vertical direction to adjust the locking position of the latch relative to the door.03-18-2010
20100117376Connecting Device for Concealed-Type Top or Bottom Latch for Panic Exit Door Lock - A lock for a door includes a latch (05-13-2010
20110012372PHOTOLUMINESCENT EXIT DEVICE - A photoluminescent member is provided for an exit device. The photoluminescent member comprises a housing member for mounting to the exterior surface of the exit device. The housing member includes a photoluminescent portion for being energized by exposure to an ambient light source and operable to automatically emit visible light photoluminescently for a substantial period of time in low ambient light or dark conditions and without being energized by an electrical current so that the photoluminescent portion provides illumination to identify the exit device in the low ambient light or dark conditions for providing a visual cue directing a person to a location of the exit device.01-20-2011
20110181052MOTOR VECHICLE LOCK ARRANGEMENT - Described herein is a motor vehicle lock arrangement that includes a motor vehicle lock, with an operable functional element and a securing device which is associated with the functional element, wherein the securing device is coupled or it being possible to couple the securing device to the functional element in order to counteract an automatic operating movement of the functional element due to a crash acceleration phenomena which can occur in the event of a crash. In one embodiment, the securing device has a deflectable blocking element which can be deflected into a blocking position in which an operating movement of the functional element can be blocked by the blocking element, and the blocking element has an associated latching arrangement which latches in when the blocking element is deflected into the blocking position, and the latched-in latching arrangement holds the blocking element in the blocking position07-28-2011
20110204658Fire Bolt Assembly for Door - A fire bolt assembly (08-25-2011
20120032455Press bar mechanism - A press bar mechanism includes a latch bolt attached to a housing, a pressing bar attached to the housing and coupled to the latch bolt, a rod received in the housing and coupled to the latch bolt, a casing coupled to the housing and having a chamber for receiving a hydraulic fluid, a piston is engaged in the casing and has one or more fluid flowing orifices, and the piston is smaller than the casing for forming a peripheral passage between the casing and the piston, a piston rod is attached to the piston and coupled to the rod, and a valve member is attached to the piston for blocking the orifices of the piston and for limiting the fluid to flow in one direction relative to the piston, and a spring biases the rod toward the casing for biasing the pressing bar away from the housing.02-09-2012
20120119519DOOR LOCK RELEASE MECHANISM FOR AUTOMOBILE DOOR - A door lock release mechanism includes a spacer 05-17-2012
20120175892Outer Operational Device for Panic Exit Door Lock - An outer operational device includes a cover mounted to an outer side of a door. The outer operational device includes a handle and an actuating member operatively connected between the handle and a latch. A sliding block is movable between an alignment position and an alignment position under control of a driving device through electrification. When the sliding block is in the engagement position, a locking block locks the actuating member to prevent rotation of the handle, and the outer operational device is in a locked state avoiding retraction of the latch. When the sliding block is in the disengagement position, the sliding block allows rotation of the actuating member and the handle, and the outer operational device is in an unlocked state allowing retraction of the latch.07-12-2012
20120200094Stop Device for Preventing Opening of Deformed Door - A stop device (08-09-2012
20120242092High Security Exit System - A high security exit system employs a door latching assembly which cooperates with a frame latching assembly mounted to the door frame. The frame latch is mounted for pivotal movement and has a latching surface movable toward a projected position. When the door is closed, the door and frame latching surfaces are projected and engaged in opposed surface-to-surface orientation. A direction of force resulting from an attempt to forcibly disengage the latching surfaces is directed through or close to the pivot access of the door latch. An override assembly is provided to force the frame latch to a retracted position when the door is opened. Auxiliary latch assemblies and corresponding frame latch assemblies are provided for coordinated latching and retraction when the push bar retracts the primary door latch. Dual latch assemblies are also provided. A solenoid mechanism may be employed to dog the push bar.09-27-2012
20120256428Stop Device for Door Lock for Panic Exit Door - A stop device (10-11-2012
20140084600EMERGENCY OPENING DEVICE FOR AN AIRCRAFT DOOR - The invention relates to an emergency opening device for an aircraft door provided with an opening mechanism (03-27-2014
20140132008MOTOR VEHICLE DOOR LOCK - The invention relates to a motor vehicle door lock equipped with a locking mechanism (05-15-2014
20140175807LOCK ASSEMBLY - A lock assembly (06-26-2014
20140284939MOTOR VEHICLE LOCK - The invention relates to a lock for a door, comprising a catch and a pawl. The catch can be in an open or closed position. The catch may be brought into holding engagement with a lock striker. The pawl may be brought into an engagement position. The pawl may be deflected into a release position, to release the catch. A pawl actuation lever can deflect the pawl into the release position. A switchable coupling arrangement is provided between the pawl actuation lever and the pawl. The switchable coupling arrangement may be brought into a closing and an opening state. When the actuation movement of the pawl actuation lever surpasses a threshold, an inertial characteristic of the lock causes the switchable coupling arrangement to switch into the opening state such that the pawl actuation lever runs without deflecting the pawl into its release state.09-25-2014
20140284940MOTOR VEHICLE LOCK - The invention is directed to a lock for a door arrangement, wherein a catch and a pawl, which is assigned to the catch, are provided. The catch can be brought into an open position and into a closed position. The catch may be brought into holding engagement with a lock striker. The pawl may be brought into an engagement position or deflected into a release position. A lock mechanism and a crash mechanism with a crash element are provided. The crash mechanism may be brought from a normal condition into a crash condition. A switchable coupling is provided between the pawl actuation arrangement and the pawl. The crash element is acting on the switchable coupling or is part of the switchable coupling in such a way that bringing the crash mechanism into the crash condition opens the switchable coupling and lets the actuation of the pawl actuation arrangement run free.09-25-2014
20140284941MOTOR VEHICLE LOCK - 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. The coupling element is arranged on one of the two coupling levers09-25-2014
20140284942MOTOR VEHICLE LOCK - The invention relates to a motor vehicle lock for a motor 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. The catch may be brought into holding engagement with a lock striker. The pawl may be brought into an engagement position. The pawl may be deflected into a release position. A pawl actuation lever is provided for deflecting the pawl. An engagement arrangement is provided. The engagement arrangement comprises a deflection lever on the side of the pawl actuation lever and a counter contour on the side of the pawl. The deflection lever is configured to engage the counter contour. An actuation movement of the pawl actuation lever can deflect the pawl into the release. An inertial characteristic of the deflection lever causes a deflection movement along a free-wheeling path.09-25-2014
20140284943MOTOR VEHICLE LOCK - The invention relates to a motor vehicle lock for a motor 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. The catch may be brought into holding engagement with a lock striker. The pawl may be brought into an engagement position. The pawl may be deflected into a release position. A pawl actuation lever is provided for deflecting the pawl. An engagement arrangement is provided. The engagement arrangement comprises a deflection lever on the side of the pawl actuation lever and a counter contour on the side of the pawl. The deflection lever is configured to engage the counter contour. An actuation movement of the pawl actuation lever can deflect the pawl into the release. An inertial characteristic of the deflection lever causes a deflection movement along a free-wheeling path.09-25-2014
20140291997LOCK FOR A MOTOR VEHICLE - 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.10-02-2014
20150014999STRIKER FOR USE WITH VEHICLE - 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.01-15-2015
20150028601MOTOR VEHICLE LOCK - 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.01-29-2015
20150054293ACTIVE HOOD LATCH DEVICE FOR VEHICLE - 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.02-26-2015
20150076833MOTOR VEHICLE LOCK - 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.03-19-2015
20150102607ACTIVE HOOD LATCH APPARATUS FOR VEHICLE - 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.04-16-2015
20160010363LOCK FOR A MOTOR VEHICLE01-14-2016
20160017641FIRE DOOR LOCK - A fire door lock is provides. A first opening unit is installed in a fire door panel to move a door locking bolt. A second opening unit laterally located on the fire door has a pressing handle coupled with an actuating block for operating the locking bolt. When the pressing handle is pushed and pressed, the actuating block activates an actuating rod and a linking arm to move horizontally. One end of the linking arm is coupled to a driving lever which is induced by the linking arm to swing. One end of the driving lever has a pulley extending into the first opening unit to activate a locking bolt base connected to the locking bolt to move horizontally. The locking bolt is accordingly adapted to extend from or retract into the first opening unit in a horizontal direction to facilitate the release or engagement of the lock.01-21-2016
20160017643LOCK FOR A MOTOR VEHICLE - The invention relates to a lock, in particular for a door or opening element of a motor vehicle, said lock comprising a locking mechanism with a rotary latch, a pawl for locking the rotary latch in a detent position, preferably a blocking lever for blocking the pawl in the detent position and a release lever for opening the locking mechanism, in particular by moving the blocking lever out of the blocking position. The lock is characterised in that a safety catch device of the lock, said device comprising in particular more than one catch position, is designed to prevent the opening of the locking mechanism during excessive acceleration, in particular during excessively violent acceleration of the release lever and/or handle of a door or opening element. An unplanned opening of the lock in the event of a crash can thus be avoided.01-21-2016
20160024819MOTOR VEHICLE LOCK ARRANGEMENT - A motor vehicle lock arrangement having a motor vehicle lock, wherein the motor vehicle lock has the locking elements of lock latch and pawl, wherein the lock latch is adjustable into an open position, into a main locked position and optionally into a pre-locked position, wherein the pawl is adjustable into a lowered position in which it retains the lock latch in a locked position, and into a raised position in which it is disengaged from the lock latch, wherein provision is made of an actuating lever for raising the pawl, wherein a switchable clutch arrangement is arranged between the actuating lever and the pawl, via which clutch arrangement a drive connection between the actuating lever and the pawl is establishable in the engaged state, and in the disengaged state the drive connection between the actuating lever and the pawl is severable.01-28-2016
20160097223MOTOR VEHICLE DOOR LOCK ARRANGEMENT - The invention relates to a motor vehicle door lock arrangement with a motor vehicle lock, wherein a force transmission chain is provided and wherein an actuation movement may be transmitted via the force transmission chain for opening of the motor vehicle lock, which force transmission chain is designed for a longitudinal force transmission along a longitudinal extension of movement, wherein a crash coupling arrangement is provided between two force transmission chain sections, which comprises a coupling element in the form of a coupling spring element.04-07-2016
20160130842MECHANICAL ASSIST MECHANISM FOR ACTIVE PEDESTRIAN SAFETY LATCH - A latch assembly for driving a closure panel from a closed panel position to an open panel position. The latch assembly comprises: a latch mechanism having a first latch element for retaining a mating latch component in a latched position and for moving the mating latch component from the latched position to an unlatched position when released, the movement of the first latch element biased towards the unlatched position by a latch biasing element; and an actuation system having: a mechanical energy storage system having a device for storing mechanical potential energy for assisting the latch biasing element in moving the mating latch component from the latched position to the unlatched position; a mechanical advantage system having a plurality of advantage elements for engaging the device, such that movement of the plurality of advantage elements is associated with a trigger force and cooperation of the plurality of advantage elements provides for amplification of the trigger force as an initiating force to release the stored mechanical potential energy; and a trigger system configured to provide the trigger force to release the stored mechanical potential energy.05-12-2016
20160138302VEHICLE DOOR OUTER HANDLE STRUCTURE - A door opening prevention mechanism includes a lever member rotatable relative to a base member and swingable in a vehicle inside-and-outside direction, and an urging member to bias the lever member toward a set position. The lever member is held in the set position when an outer handle is located in a door closing position when a given inertial force does not act in a vehicle outside direction during a vehicle collision, and swings in the vehicle outside direction from the set position to be moved to a locked position against an urging force of the urging member when the inertial force acts. When the lever member is in the set position, movement of a connection lever in a door opening direction is allowed. When the lever member is located in the locked position, movement of the connection lever in the door opening direction is restricted.05-19-2016
20160145907BLOCKING STRUCTURE OF ANTI-FIRE DOOR LOCK - A blocking structure of an anti-fire door lock includes a latch set, a blocking pin set and a blocking base, wherein the latch set comprises a lock base and a latch that pivotally connected to the lock base. The blocking pin set disposed in an accommodating hole of the latch comprises a blocking pin and an elastic member, and the blocking base comprises a constraining slot. The elastic member is used for pushing the blocking pin to move and making the blocking pin to lodge into the constraining slot to prevent an anti-fire door from being opened.05-26-2016
20160160536LOCKING MECHANISM WITH INCREASED SAFETY FEATURE - A locking mechanism (06-09-2016
20160168882DOOR LATCH DEVICE OF VEHICLE06-16-2016
20160201362LATCH DEVICE FOR TRUNK LID OF VEHICLE07-14-2016
292093000 Panel 7
20090079204DELAYED EGRESS EXIT DEVICE - A touch bar (03-26-2009
20090230700VEHICLE DOOR LATCH SYSTEM - A vehicle door latch system configured to temporarily prevent door latch mechanisms from unlatching during a predetermined event is provided. The vehicle door latch system includes a forkbolt pivotally mounted to a housing portion of the vehicle door latch. The forkbolt is capable of moving between a latching position and an unlatching position. The door latch system also includes a block out mechanism configured for movement between a blocking position and an unblocking position. The block out mechanism is configured to prevent the forkbolt from moving from the latching position to the unlatching position when the block out mechanism is in the blocking position. A biasing member biases the block out mechanism into the unblocking position. The door latch system also includes an activation mechanism for moving the block out mechanism to the blocking position when the activation mechanism is activated for a predetermined time period to overcome the biasing member and after the predetermined time period, the block out mechanism moves to the unblocking position by the biasing member.09-17-2009
20090243307DELAY APPARATUS FOR OPENING OF VEHICLE DOOR - An inertia activated mechanism associated with a door latch mechanism of a vehicle obstructs operation of a door handle assembly when the inertia activated mechanism is subjected to acceleration forces from a vehicle event. Delaying structure in the inertia activated mechanism momentarily delays return to the pre-event condition during rapidly changing acceleration of the vehicle event.10-01-2009
20100102573Retrofit safety door lock - The invention involves the creation of a security lock system that allows a room's occupant to quickly secure the room against entry from the outside without the need to exit the room and without the need to use a key for activating the lock mechanism; the lock is a retrofit device that fits onto a typical inner lever arm door handle, and provides a frictional means for maintaining the inner door handle in an open position; in an emergency, the handle can be manually rotated into the closed, position, rendering the door non operable from outside without the use of the appropriate key.04-29-2010
20100140961Outer Operational Device For panic Exit Door Lock - An outer operational device includes a cover mounted to a side of a door. An actuating member is mounted in the cover and includes an end engaged with a handle to rotate therewith. A driving member is pivotably received in the cover and includes a wing. A link includes an upper end pivotably coupled with the wing and a lower end pivotably coupled with an end of the actuating member. A driving rod is coupled with the driving member and operably connected to a latch of a lock mounted in the door, so that rotation of the handle causes retraction of the latch.06-10-2010
20100301618CABLE-ACTUATED INERTIAL LOCK FOR A VEHICLE DOOR - A vehicle includes a door assembly having an outside door handle, a latching assembly, and a cable-actuated inertial lock having a moveable linkage disposed within a cavity of a stationary housing. A first end of the cable is connected to the handle, and a second end is connected to the linkage. The inertial lock includes a lever for actuating the latch under normal conditions when the handle is actuated, and also contains a deployable toggle piece that is stowed in the linkage. The toggle piece is configured to rotate within the linkage, and thereafter lock against a shaped inner surface of the housing in response to a threshold acceleration of the type set forth in FMVSS 206 or other standards. A torsion spring may be used to bias the toggle piece into a stowed position within the linkage.12-02-2010
20130093195Latch Assembly with a Safety Device for a Fireproof Door Lock - A latch assembly includes a base having two sidewalls each having a positioning hole. A follower plate includes two sidewalls each having an engagement hole that is aligned with the positioning holes when the latch is in a latching position and that is not aligned with the positioning holes when the latch is in an unlatching position. Two sleeves are mounted between the sidewalls of the follower plate. An end of each sleeve is received in the engagement hole of one of the sidewalls of the follower plate. A stop having a low melting point is received in each sleeve to retain a safety pin in the sleeve. When the stops melt due to heat of a fire while the latch is in the latching position, the safety pins are moved by a spring into the positioning holes of the base to retain the latch in the latching position.04-18-2013

Patent applications in class Emergency operating means

Patent applications in all subclasses Emergency operating means

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