Abstract: A housing mounted to the frame of a panic exit device confines a translatable limb, and a pivotable arm. The limb has a lobe which obstructs the arm to prevent its pivoting and, as a consequence, the arm blocks the latchbolt linkage of the device to prevent unlatching. A rod joined to a time-delayed-operative solenoid is coupled to the limb for displacing the limb from arm-pivoting obstruction, to allow the arm to unblock the latchbolt linkage, whereby the latchbolt can unlatch following the time delayed deenergization of the solenoid. Under normal conditions, the solenoid is energized to prohibit immediate unlatching.

Abstract: The housing comprises an actuating lever (8) articulated about a transversal spindle (13), and a mechanism (16), controlled by the lever, capable of driving, in opposite direction, two rods (17, 18); each rod is provided, at its end farthest away from the housing, with a bolt, in order to bring about a locking at an upper point and a lower point, respectively. The actuating lever (8) comprises a unilateral thrust organ (19) capable of co-operating with one or two complementary abutments (21, 22) provided for on a driving organ (23) of the mechanism (16), whereby the lever (8) may be tilted from one position into another, to co-operate with the appropriate complementary abutment (21, 22), in order to selectively allow the fitting onto a "right-hand" or "left-hand" door.

Abstract: A flush bolt including override protection is disclosed for flush mounting on the inactive one of a pair of swinging doors. In one embodiment of the invention, an automatic flush bolt comprising a trigger member senses whether the active door is closed. If closed, the flush bolt assumes an engaged position securing a bolt into a securing surface. If open, the flush bolt assumes its disengaged position with the bolt retracted into the mechanism. In a second embodiment of the invention, a semi-automatic flush bolt is provided with a slotted member and a spring to bias the bolt toward the engaged position. When the door containing the mechanism is closed, the bolt may temporarily and automatically override the securing surface and engage the securing surface without damage to the mechanism, the door, or the door frame. Opening the door requires manual intervention through activation of a control member.

Abstract: A latch retraction device for narrow stile doors which may be hinged either on the left side or on the right side, and which utilizes a push or pull actuator for retracting the latch instead of utilizing a rotary knob for that purpose. The device utilizes inter-engaged toothed elements to provide linear to rotary motion in a novel configuration of parts which permits one set of parts to be utilized to provide either a push or a pull actuation for latch retraction with either a right hand or left hand door and thereby eliminating the necessity to manufacture and inventory a large number of parts to accommodate all four types of desired uses.

Abstract: A door hold open device for use with fire doors connected to a door closer unit. The hold open device has a latching means that automatically unlatches if the power supply drops below a predetermined threshold or a person attempts to disconnect the power supply. The device includes an electrical actuating means for unlatching the held open door. The actuating means allows a door to be latched open without constant current being supplied to the actuating means, so battery power is possible. The invention may be used with any door closer unit, does not require special wiring, and may include a self-contained power supply and an integral smoke detector.

Abstract: The Device is of the push pad type having a translating action rod which is biased in the latch bolt-extended position. An abutment is fixed to the action rod to receive thereagainst the extending plunger of a shock absorber which is removably coupled to an open guide base. The base is mounted on a base plate to support action rod operating bellcranks, and to support the action rod therein also. A shock absorber holder is clasped to the guide base, and the cylinder of the shock absorber, in which a viscous fluid is confined, is engaged by the holder to direct the plunger toward the abutment. In the depicted embodiment, the plunger resists retraction, to decelerate and damp the return of the push pad and action rod to their at-rest positions and, consequently, to suppress the operating noise of the panic exit device.

Abstract: The antipanic lock comprises at least a bolt and an actuating rod pivotingly connected to a door by a unit formed by at least two housings fixed onto the door and two levers (2) integral, towards their one end, with the actuating rod and pivotingly mounted, at their other end, into an associated housing (4); said lock comprises a torsion spring (10), in a first dihedron corresponding to a first direction of opening of the door, the actuating rod and the levers (2) towards a neutral position, one of the levers being a control lever co-operating with members in order to actuate the bolt.

Abstract: In a first embodiment, the invention has a casing set in the frame of a door in confronting relationship to the latchbolt-confining housing of the door. A bolt, translatable in the casing, is extended, by a solenoid, and enters the housing to prevent opening of the door. A latchbolt position sensor, in the form of a dual-ended limb, monitors the position of the latchbolt. Upon withdrawal of the latchbolt, from latching closure of the door, the limb actuates a switch to operate a time delay circuit component. When the specified time delay set by the component has run its course, it cuts power to the solenoid. Compression springs withdraw the bolt from the latchbolt-confining housing, to permit the door to open.

Abstract: The apparatus includes a rod having a handle end and a cam at the other end, a housing and a hasp holding means, a housing spring, a handle and a handle spring. The housing has an aperture formed therethrough for receiving the rod. The apparatus is adapted to be assembled to wall structure for releasable securing a door. The wall structure will have an aperture formed therethrough for receiving the rod. The apparatus is assembled by locating the housing and housing spring on one side of the wall structure and the handle and handle spring on the other side of the wall structure with the rod extending through the housing aperture and through the wall aperture with its handle end coupled to the handle and handle spring and its cam located in a holding position to engage the housing such that the cam cannot pass through the housing aperture. Means is provided for preventing the housing from rotating when held next to the wall structure.

Abstract: A dogging device for a door panic exit device which provides a tongue portion which releasably engages a ledge portion of an inwardly projecting push bar to lock the push bar in an inward position with respect to the door. The tongue portion is mounted for axial movement and limited rotational movement with respect to a housing of the panic exit device. In an undogged condition the ledge portion moves inward with the push bar and abuts and deflects the tongue portion harmlessly inwardly without any engagement. By axially translating the tongue portion into the housing the tongue portion clears the ledge portion and springs into a position outwardly of a trailing side of the ledge portion whereupon release of the actuating button translates, by a spring bias, the tongue portion back axially toward its original position, which results in the tongue portion being positioned abutting the trailing side of the ledge.

Abstract: A time-delayed mechanism obstructs movement of a latchbolt from its latched position to an unlatched position. Linkage coupled to the latchbolt, and manually acutated (by a push pad, or the like), includes an arm which normally pivots, with the manual actuation of the linkage. An initial, limited movement of the linkage activates a switch, and the latter activates a time delay circuit component. The latter component, following a specified time delay, interrupts power to a solenoid. The solenoid, normally powered, has a bar inductively movable therein with a rod joined thereto for coincident movement. An end of the rod carries a roller which intrudes into the pivotal arc of the arm, preventing full pivotable movement thereof. Consequently, the linkage, which is to move the latchbolt to its unlatched position is blocked until the time delay has run its course, whereupon the solenoid is de-energized.

Abstract: A flush bolt including override protection is disclosed for flush mounting on the inactive one of a pair of swinging doors. In one embodiment of the invention, an automatic flush bolt comprising a trigger member senses whether the active door is closed. If closed, the flush bolt assumes an engaged position securing a bolt into a securing surface. If open, the flush bolt assumes its disengaged position with the bolt retracted into the mechanism. In a second embodiment of the invention, a semi-automatic flush bolt is provided with a slotted member and a spring to bias the bolt toward the engaged position. When the door containing the mechanism is closed, the bolt may temporarily and automatically override the securing surface and engage the securing surface without damage to the mechanism, the door, or the door frame. Opening the door requires manual intervention through a activation of a control member.

Abstract: A cooker includes a body having a heating compartment therein, and a door attached to the body to open and close the heating compartment. The door is locked in a closed position by a lock mechanism. When the door is to be opened, the lock mechanism is electromotively released by first release mechanism, or released by external mechanical force through a second release mechanism.

Abstract: The mechanism is configured to operate both a primary latch bolt and secondary latches, and provides for immediate, ready egress for the side of a door to which the mechanism is mounted, but offers high security for the other, outside of the door. The latch bolt is directly controlled by a first linkage, and the secondary latches are directly controlled by a second linkage. During egress, both linkages translate together, via a pin connection. However, a lost motion arrangement prevents retraction of either the bolt, or the secondary latches, if the other is compromised (or operated by a key or combination). From the outside, high security side of the door, the latch bolt and the secondary latches must be retracted together.

Abstract: An improved mechanism of simplified smaller construction for independently manually, as by a pushbar, or electrically, as by remote control, unlocking a latch bolt normally urged to locking position by a spring. The mechanism is especially adapted to be incorporated in a panic exit or fire door latch.

Abstract: A door latching or unlatching push bar apparatus comprising: a mounting rail means to be carried by the door, the rail means having a locking rail; a push bar mounted for advancement and retraction relative to the rail means; support means carried by the push bar to extend toward the rail means, and a lock arm carried by the support means to be movable into and out of dogging position relative to the locking rail; and an actuator carried by the push bar and operatively connected with the lock arm to move the lock arm into and out of dogging position when the push bar has been advanced toward the rail means.

Abstract: A combined panic exit and combination lock assembly for a security area door including a panic exit device on the door inner side and a high security combination lock on the door outer side, wherein operation of a panic bar from within the security area concurrently retracts both the latch system of the panic exit device and the lock bolt of the combination lock for egress from the security area. However, retraction of the panic exit latch system and of the lock bolt from outside the door requires independent unlocking operation of both the panic exit device and combination lock. A primary latch bolt of the exit device is retracted by a rod member and main control link, and secondary outputs and associated secondary latch bolts are connected to bellcranks.

Abstract: A mounting cassette for an exit device includes a latch bolt assembly. Latch bolt assembly includes a rotatable member for causing retraction of the latch of said assembly. The cassette is used to mount the exit device on a first side of a door having on the opposite side thereof a cylinder lock. The cylinder lock includes an actuator member extending through the door. The mounting cassette has first motion transmitting member mounted for rotation therein. The first motion transmitting member receives the actuating member for rotation thereby. Second motion transmitting member is rotatably coupled with the first motion transmitting member and is connected to the rotatable member of the latch bolt assembly.

Abstract: A locking and unlocking device for opening an emergency exit in which an anti-panic bar is supported, at its ends, by two arms rotating in housings fastened by their bottoms on the leaf of the exit, on each side of the bar, one of the housings including the actual lock and the other including a horizontal finger extension from a lever of the anti-panic bar on the other side of the axis of rotation of the lever toward the bottom of the housing, a slide supported on the finger and vertically movable, whose front upper edge has the shape of a step, the side of the step being almost vertical and the base of the step slightly inclined forward, a transverse rod movable between a rear position where it abuts against the side of the step, slightly above its base, when the slide is in a low position, and a forward position where it is in front of the slide, a return device being provided for the rod in the forward position, the transverse rod being carried by the lower arms of lateral small rods rotating about a trans

Abstract: A panic device for doors comprises a bar disposed horizontally along and carried by the inside of a door and mounted thereto for limited pivotal movement of the bar between positions toward and away from the door, a latching assembly affixed to the door and disposed within the bar, the latching assembly having a latch sub-assembly in operable engagement with the bar whereby upon movement of the bar between positions toward and away from the door, the latch sub-assembly is actuated to unlatch or latch the door. Additional embodiments include an optional stationary exterior door handle, a lock cylinder and crank sub-assembly for actuating the latch sub-assembly from the exterior of the door, and a dogging device for selectively operating the bar in a panic mode or as a stationary door handle.

Abstract: An electromagnetic lock which mounts at the top of a door frame and magnetically bonds with an armature employs both an ultrasonic sensor and a passive infrared sensor to detect the approach of an individual at the doorway. Both the ultrasonic sensor and the passive infrared detector have fan-shaped sensing regions which are positioned forwardly from the doorway. Upon detection of an individual approaching the doorway, the lock is capable of automatically releasing to allow egress through the doorway.

Abstract: A push door opening mechanism for use where protection from fire is sought. In operation the push handle causes a spring biased operating lever to rotate within the door opener. The operating lever pulls a bolt which allows the door to open. When the lever is in the return position, a cavity in the operating lever is positioned adjacent to a locking pin. That pin is held in the base plate and is longer than the depth of the cavity in the operating lever. The locking pin is also mechanically biased to move into the cavity. Once positioned in the cavity, the rotation of the operating lever is jammed because the locking pin is partially in the operating lever and partially held rigid in the base plate. However, during normal operation, the locking pin is retained out of the cavity by a low melting point fusible link pin. During a fire the base plate becomes hot, causing the link pin to melt which frees the locking pin.

Abstract: The vertical slide in the latch linkage of an exit device is coupled for vertical movement together with a channel inside the door stile. The channel holds a pair of blocks having inclined surfaces held in touching relation and relatively slideable. The vertical latch-operating rod is attached to the first of the blocks and the other block is secured to the channel by a horizontally disposed threaded adjusting element. The side walls of the channel restrict the first of the blocks from lateral but not vertical movement. The other block is restricted from lateral movement only by the threaded element, and turning the threaded element moves that block from side to side in the channel to raise or lower the first block as the inclined surfaces slide. This changes the effective length of the rod. The turning of the threaded element may be done from the outside of the door through an access hole.

Abstract: An electrically operated exit device comprises a low powered dogging assembly for a pushbar and an electrical actuator for a latch bolt. A latching bracket is attached to the pushbar for movement inwardly and outwardly along a path. A dogging plate of the dogging element is pivotally moveable between a retracted position out of the path of the latching element and an extended position in the path of the latching element. The dogging plate is spring biased toward the extended position and has a protruding shoulder. When the dogging plate is extended and the pushbar moved inward manually, the latching bracket strikes the dogging plate, retracts it slightly against the force of the spring bias and then continues slightly beyond the shoulder of the dogging plate. Then, the dogging plate again extends fully under the influence of the spring bias such that a bearing surface on the far side of the shoulder catches the latching bracket and thereby dogs the pushbar.

Abstract: A door lock structure includes a frame and a latch bolt carried by the frame for movement between retracted and advanced positions relative to a jamb. The bolt in its retracted position allows the door to open and when its in its advanced position blocks the closed door from opening. A first heat-fusible spring carried by the frame urges the bolt toward the advanced position. A lever pivotally carried by the bolt pivots between a first bolt blocking position and a second bolt freeing position. The lever has a second heat fusible spring carried by the bolt and acting on the lever for urging the lever toward the first bolt blocking position. The frame carries an actuator for pivoting the lever into the second position allowing movement of the bolt toward the retracted position. The lever also has a counterweight on the lever for keeping the lever in the first position to block retraction of the bolt in the event that the first and second springs melt.

Abstract: The invention disclosed herein provides a panic exit device for doors having in their active side vertically operating bolts extending from the top and bottom of the door and a mechanism for retracting the bolts. Usually, the retracting mechanism may be activated by using a key in an exterior door lock or by depressing a panic bar on the interior of the door. The improved panic exit device of this invention provide a device for actuating the bolt retraction mechanism which is mounted inside a semi-hollow enclosure which is integral with the door. The mounting is accomplished with screws hidden from view by the glass pane securing mouldings. The panic exit device of the invention also provides an improved dogging mechanism to lock the actuator device in the actuated position, while simultaneously preventing excessive play in the panic bar.

Abstract: A heavy-duty panic proof lock unit comprising a latch bolt mechanism, a dead bolt mechanism, and a cartridge mechanism. The latch bolt mechanism cooperates with a primary spindle. The dead bolt mechanism cooperates with a secondary cylinder. The cartridge mechanism comprises a first cartridge plate, a second cartridge plate, a rocker lever, a collar, an H-shaped slide, a rotary lever, and a spring-loaded catch. The collar is a ring-shaped plate having approximately a same size with the opening of the drive ring of the rocker lever and comprises two outwardly projecting teeth at opposite locations respectively to cooperate with notches of the rocker lever. The collar also has an inwardly projecting tooth designed to fit in slide along the spindle slot and to transmit rotary force between the primary spindle and the rocker lever. The collar is entrapped in the opening of the drive ring, with the two outwardly projecting teeth thereof retained within the notches of the rocker lever.

Abstract: Apparatus deadlocking a door member to a door frame member, one of the members rigidly supporting a bolt to project freely in the direction of a first axis, for captivation by said mechanism, comprises:(a) a body attachable to the other member,(b) a rotary latching structure carried by the body to pivot about a second axis generally parallel to the first axis, the latching structure including a latch forming a recess to relatively receive the bolt as the members relatively close and so that the bolt pivots the latch about the second axis into full latching position, therby to deadlock the two members,(c) a confinement wall on the body to face and confine the bolt in the recess in full latching position,(d) the latching assembly including a latch dog,(e) and a blocking and unblocking part extending in co-operation with the body and movable from a first location in which the latch dog is blocked to prevent pivoting of the latch to release the bolt, to a second location in which the dog is unblocked, to allow la

Abstract: A door retention assembly locks a door in closed position in response to high temperature as during a fire, the door element having an edge portion closable into adjacent relation to an edge portion defined by a header element, and there being a strike carried by one of the elements. The assembly includes:(a) a latch carried by the other element to relatively move into latching relation with the strike when the door element is closed relative to the header element, thereby to hold the door closed,(b) and a control to control movement of the latch into and out of latching relation with the strike. A heat fusible part, when fused, renders the control inoperable to effect movement of the latch out of latching relation with the strike.

Abstract: In the system, exits are provided with opening bars and locks. The system has a central post and control boxes. Each control box is associated with an exit and is connected to the central post. Activation of an opening bar initiates the sending of information to the central post by the associated control box. This triggers a first delay To. During this delay, the opening of the exit can be stopped for a further delay Tc. The opening is allowed at the end of the first delay or at the end of the second delay. A third delay Tp can be triggered during the second delay Tc to allow the opening of the exit under question during the third delay Tp and to relock the exit under question at the end of the third delay Tp, by cancelling the effect of the second delay Tc. The system can also operate in the anti-intrusion mode. In particular, it can be used in stores or public establishments of medium area.

Abstract: An electrically operated exit device comprises a low powered dogging assembly for a pushbar and an electrical actuator for a latch bolt. A latching bracket is attached to the pushbar for movement inwardly and outwardly along a path. A dogging plate of the dogging element is pivotally moveable between a retracted position out of the path of the latching element and an extended position in the path of the latching element. The dogging plate is spring biased toward the extended position and has a protruding shoulder. When the dogging plate is extended and the pushbar moved inward manually, the latching bracket strikes the dogging plate, retracts it slightly against the force of the spring bias and then continues slightly beyond the shoulder of the dogging plate. Then, the doggin plate again extends fully under the influence of the spring bias such that a bearing surface on the far side of the shoulder catches the latching bracket and thereby dogs the pushbar.

Abstract: An exit device providing adjustable backset. This is achieved by having the touch bar linked to a driven element adjacent the base plate of the unit and the latch mechanism linked to an activator element also adjacent the base plate. These two elements are coupled by a sliding drive plate having a plurality of sets of apertures spaced along it to receive both elements respectively in a selected set. An exterior operator of specified backset is provided and connects with a cam adjacent an end of the drive plate to slide the plate when the exterior operator is moved. By selecting the proper set of apertures for the elements the installer can see that the cam is at the proper backset and therefore aligned with the operator.

Abstract: A door push-bar lock-out retainer which includes a block for mounting onto a door and it has a flexible strap for surrounding the push-bar and holding it in the door unlatched position. The strap is adjustable to accommodate various sizes of push-bars. The block has an opening which receives one end of the strap which has a latch end which is trapped in the opening by a latch member on the block. A key is utilized for releasing the strap from the latched position to thereby release the push-bar and thereby place the door in its locked position.

Abstract: Improvements in a panic bar door operator assembly include a self-contained alarm unit, and a remote unlatching mechanism. The alarm unit comprises a separate key-switch assembly and a separate alarm assembly which separably mount on the housing of the panic bar assembly in a cooperative relationship with the panic bar operator. The key-switch assembly is selectively operable to armed and disarmed settings and also to an access setting. In the access setting, the alarm switch of the alarm assembly is in its disarmed position and an alarm cannot be given, and in this position an adjacent cover member can be removed to provide access to the interior of the alarm assembly, particularly for battery replacement where self-contained batteries power the alarm. In the disarmed setting, the key-switch assembly latches the cover member on the housing so that it cannot be removed and in this setting an alarm will not be given when the panic bar is operated.

Abstract: A coordinated door stop and latch includes a retractable stop, a sliding bolt latch, and a mechanism between the stop and latch. The sliding bolt is used to latch the door to preclude inward movement in a normal fashion. If emergency outward operation of the door is required, retraction of the stop causes ejection of the sliding bolt from its strike opening, thereby enabling resuce door operation.

Abstract: Door lock and lock assemblies are useful, for example, in vehicle cabs. Latch and lock assemblies of known structures which can be unlocked from inside the cab while remaining locked from outside the cab require complex and bulky linkage assemblies. The subject door latch and lock assembly includes pivotal outer and inner actuator. The pivotal movement of the outer actuator simultaneously pivots the inner actuator to open a catch mechanism. Pivot movement of the inner actuator can be independent of the outer actuator. A locking lever can be pivoted to a locked position to prevent pivotal movement of the outer actuator. Pivotal movement of the inner actuator is not prevented by the locking lever. Thus, the disclosed door latch and lock assembly can be opened from inside the cab while remaining locked from outside the cab without requiring complex and bulky linkage assemblies.

Abstract: An electromagnetic door lock system employs an electromagnetic lock which magnetically bonds with an armature plate. An acoustical sensor generates a detection beam. The detection beam is directed toward the doorknob. Reflected energy is received and electronically processed to detect the presence of a foreign object in the vicinity of the doorknob. The lock automatically deactuates when a foreign object is detected in the vicinity of the knob. The electromagnetic lock, sensor and processing circuitry are mounted in a housing which is located near the top of a doorway. An audio alarm and status light indicators are mounted at the housing to indicate the status of the lock.

Abstract: An exit device primarily designed for outwardly opening doors comprises a rigid plate member having mounted thereon a latch-bolt assembly anchored to a door member and a strike assembly mounted on a door frame member in operative association with the latch-bolt assembly, wherein the plate member includes projections positioned to be on each side of the latch bolt of the latch-bolt assembly, and wherein the strike assembly includes recesses for receiving such projections. The recesses in the strike assembly are configured in relation to the projections to allow limited vertical movement of the projections within the recesses. When the device is subjected to a major force such as in a fire the projections will restrict linear growth of the frame member in the latch area by engagement of the projections, with the walls of the recesses thereby preventing excessive strain from occurring on the latch bolt which can lead to disengagement of a latch bolt from the strike.

Abstract: A crash bar door locking device is provided, suited for mounting on the inside of a swinging door. The crash bar is mounted horizontally across the door providing ready access by movement in the outside direction. The crash bar activates a pivotal lever which causes a latch bolt to rotate inwardly and disengage from a door strike. The pivotal lever provides a deadbolt feature by preventing the rotation of the latch bolt. A release is incorporated in the latch bolt and allows the latch bolt to rotate when the release engages the door strike as the door closes. An additional unlocking mechanism may be provided for retracting the latch bolt from the outside of the door independently of the crossbar. A firelocking mechanism may be incorporated in the latch bolt to secure the latch bolt when a fire occurs. Two pins with a spring between them are retained by fusible plugs at either end of a bore in the latch bolt, so that the latch bolt operates as a normal lock on the door.

Abstract: An electromagnetic lock for doors includes a large electromagnet mounted on the door frame, and a strike plate or armature secured to the door. A double-throw, double-pole type of relay or other switching circuit serves to selectively connect the electromagnet to receive rectified current when it is energized, and to receive a reverse pulse from a large capacitor when the door circuitry is de-energized. The large capacitor is charged to the same voltage as the electromagnet to insure full reversal of the magnetic domains to prevent residual magnetism. The double-throw, double-pole switch may be actuated by a high speed relay to insure timely switching of the contacts to apply reverse current from the capacitor to the electromagnet. The relay coil may be a latching relay which is selectively actuated in one direction while the circuit is energized, and is reversed as the electromagnet is discharged, so that it draws no current except when it is being switched on.

Abstract: A building has at least one security guard post to control the secured building exits, each of which has an unlocking instrumentality, without forbidding their emergency use. When activating the unlocking instrument to open a secured exit, there is a transmission of information to the security guard post and an initiation of a delay during which the security guard can forbid the opening of the exit. The unlocking instrument can also visually indicate events at the exit. The apparatus has an electro-mechanical lock, a sensor which is sensitive to motion of the unlocking instrument, a control line linking each door to be controlled to the security guard post, and a central electronic processing unit. A surveillance circuit responds to the sensor. A security circuit frees the unlocking instrument when a fault is detected.

Abstract: A door mounted in a door frame is held closed by an electromagnet mounted on the door frame which magnet attracts an armature mounted on the door. A switch is mounted adjacent to the electromagnet and is operated by a switch operator mounted on the door. The switch provides a signal indicating that an attempt is being made to open the door, which signal may be used to sound an alarm or start a time delay release. A pair of contacts are also mounted adjacent to the electromagnet and are bridged by the armature to indicate when the armature is properly held by the electromagnet.

Abstract: A door handle device unlockable from indoor side of refrigerators, which device enables a person trapped in a refrigerator by accident to escape therefrom speedily by a simple operation. This handle device comprises a handle unit fastened to a door, and a latch receiver unit fastened to a wall of a refrigerator. The handle unit consists of the fixed seat attached to the door, a movable body connected to the fixed seat by a pivot, a latch member, and an operating handle for driving the latch member. The door handle device also has a setting bolt, an operating portion is positioned in the inside of the refrigerator. The setting bolt is inserted into a threaded bore provided in a rear portion of the movable body to fix the movable body to the door. The trapped person has only to turn the operating portion of the setting bolt to take out the bolt from the threaded bore and thereby permit the movable body to pivot and release the latch member from the latch receiver unit and then open the door.

Abstract: An emergency exit device of the push bar type to control entry and exit of personnel, including a crossbar which may be pushed toward a door to actuate mechanisms which retract a latch bolt, and an alarm and key system for selective alarm actuation. The alarm and key system includes internal control mechanisms which are mounted in a tamper-proof housing, which may be accessed only by operating the push bar and actuating the alarm. A light emitting diode in the alarm assembly indicates alarm state, the presence of power, and a preset delay interval for alarm actuation. A variety of internal and external key operation configurations may be employed. A fastening arrangement for the exit device housing provides security against unauthorized manipulation of alarm components. Where mounting the alarm assembly within the exit device frame, an internal mounted guard member may include a protection flange to block access to the alarm.

Abstract: Remote control locking and unlocking device, especially for an anti-panic bar, the displacement of which actuates the unlocking of a door or other exit opening means, of the type comprising a latch adapted to oscillate in rotation within a housing, wherein a lever arm comprises supplementary locking means adapted to cooperate with the cam outline of the latch in order to secure the latching rotation with respect to the lever arm when said arm is called into blocking position by the core of the electromagnet, such a control being applied to remote security locking of anti-panic bars.

Abstract: A door release mechanism (10) for a door (24) having a latch bolt (22) is provided. The door release mechanism (10) includes a strike block (12) adapted to receive the latch bolt (22). A ramped surface (26) is provided within the strike block (12) for urging the latch bolt (22) into the door (24) to thereby open the door (24). Structure (30, 42, 48) is further provided within strike block (12) for preventing the latch bolt (22) from being withdrawn within the door (24) for maintaining the door (24) closed.

Abstract: An exit device for a door includes a rear channel member, a latch bolt assembly at one end of the channel member, a pair of spaced rails mounted in the rear channel member, with the channel member including two sets of opposed longitudinally extending grooves in its interior forming tracks for the rails. The rails are mounted in the tracks. A path bar includes a portion extending outwardly of the channel member. At least one connecting link is pivotably attached at one end to the rails and pivotably attached at the other end to the push bar for mounting the push bar in the channel for movement between a retracted position and a depressed position. The push bar has tapered end portions tapering outwardly toward the latch bolt assembly. The exit device further includes a cover including an end portion adjacent the push bar and having a taper complementary to the taper on the adjacent end of the push bar.

Abstract: Exit device has auxiliary bolt which when held in by door strike permits a blocking leg to prevent unauthorized forced retraction of main latch bolt. Normal operation of device by panic bar pivots blocking leg out of the way and then retracts main latch bolt.

Abstract: A handle device for a door which is formed of an assembly installed in a door panel and has a handle grip connected thereto by a pivot pin. A latch is retractably mounted to the assembly and is interlocked with the handle grip. An actuating lever is pushed by the handle grip to move the latch. A reset lever drives the actuating lever when pushed by a push rod extending inside the door. A lock mounted on the assembly has a cam secured to a rotor, serves to release the engagement between a lock plate which is secured to the assembly and adapted to check the slide of the latch, and the latch. When the push rod turns the reset lever, engagement between the lock plate and the latch is released and the latch slides and is retracted by turning the actuating lever.

Abstract: In combination with a door hinged at one edge within a door jamb with a latch assembly mounted upon a closing edge and a strike on the jamb in registry with the latch assembly which comprises a latch within a housing pivotally mounted upon the door upon a first axis and projecting from the housing and having a lock position receiving the strike and normally biased towards an unlocked position, the strike on closing the door rotating the latch to its locking position, there being a locking aperture upon the latch. A yoke, normally biased towards a locking position and rotatable to an unlocked position is pivotally mounted upon the housing upon a second axis and mounts a latch pin adapted for interlocking registry with the lock aperture when the latch is in locking position. A spring biased reciprocal latch bar has an actuator which is adapted on retraction to retract the yoke to an unlocked position, the latch being free to move to its unlocked position on opening of the door relative to the strike.