Abstract: A push-button-operated flush type handle assembly is provided. The assembly enables a person trapped in a cabinet to unlock and open a cabinet door from inside even when push button 16 is locked from outside. In the assembly: handle 4 is pivoted to housing 2 of casing 1 and swingably urged by spring 20 in its projecting direction; projection 7 for rotatably driving lock plate 6 is formed in the handle; latch 29 is mounted in guide hole 3 of the casing and slidably urged by spring 22 toward pivot 5; locking projection 12 engaged with and disengaged from receiver projection 11 of the handle is formed in the latch; oblique cam surface 19 is formed in the latch which has operating projection 14 in its rear surface; escape hole 15 of bottom wall of the casing permits the projection 14 to pass therethrough; and, oblique cam surface 18 is formed in the push button or in push-button guide 17 fitted to the push button.

Abstract: A testing apparatus which has a test chamber located within a chamber frame. The apparatus includes a computer controlled ergonomic system which can vary the temperature of the test chamber. Within the test chamber is an adjustable ceiling that can be moved to vary the volume of the chamber. Extending around the outer edge of the ceiling is an inflatable seal which seals the chamber when the ceiling is moved to a new position. The ceiling and walls have a plurality of adjustable vents that direct fluid flow into the chamber. The doors of the apparatus are each constructed from an inner wall that is coupled to an outer wall by a plurality of floating joints. The floating joints allow the inner wall to contract or expand relative to the outer wall without creating a corresponding stress on the outer wall or the joints.

Abstract: A structural assembly comprises first and second closure parts displaceable between a closed disposition in which they are locked by a locking mechanism and in which they close off the front side of the closure parts from the rear side and an open disposition in which they are spaced apart for access to the rear side of the closure parts and a default indicating device comprising a projection element (34) which is movable to the rear side of the closure parts where it is stowed and which releases when the closure parts move to an open disposition and moves to a projecting position in which it projects from the rear side to the front side of the closure parts to provide a visual warning that the closure parts are not in the closed disposition. The closure parts in one embodiment are fan cowl doors of an aero engine nacelle which are hinged at their upper edges to the upper part of the nacelle and which have bottom edges which move into the closed disposition at the base of the nacelle.

Abstract: A device (10) for preventing the opening of a door (52) into an enclosed space (50) if the atmosphere in the space is hazardous. A sensor or sensors (31) monitor the atmosphere in the space and provide a controller (32) with a signal proportional to atmospheric conditions. If the controller determines that a hazardous condition exists, it produces a signal that actuates a lock that prevents the door from being opened. In a preferred embodiment, the device prevents the opening of a door of a transport container if the proportion of oxygen in the atmosphere of the interior of the container is less than a predetermined value.

Abstract: An improved structure for an actuator for the lock mechanism of a latch assembly, such as a vehicle door latch assembly. The actuator includes a housing having an output arm moveable relative thereto between a lock position and an unlock position, to lock and unlock, respectively, the latch mechanism. An output gear having a pawl formed thereon is rotatably mounted adjacent the output arm. The output gear is adapted to rotate about an axis to cause the pawl to engage a first one of the pair of drive surfaces to urge the output arm toward the lock position. The output gear may be rotated in a second direction to cause the pawl to engage the other of the pair of drive surfaces to urge the output arm toward the unlock position. The output arm is coupled to a blocking member adapted for movement relative thereto. The blocking member may be moved to a blocking position when the output arm is in the lock position.

Abstract: An electrical release door strike comprising a carrier frame; a strike bolt carried by the frame for movement when released, allowing door opening, the bolt adapted to receive and resist door opening force prior to bolt movement; a solenoid carried by the frame to have either of two alternate positions relative to the frame; and structure operatively connected between the solenoid and bolt in either of the positions to cause the bolt to assumei) a fail safe condition when the solenoid is in one of the positions,ii) a fail secure condition when the solenoid is in the other of the positions.

Abstract: A locking device, suitable for walk-in freezer doors, automatically locks when the door is closed, allows the door to be pulled open from the outside only when a proper key is inserted and rotated 90.degree., and always allows the door to be opened from the inside by pushing on a manual actuator. The locking device includes a strike mounted on the door frame, an outside plate assembly including a rigid handle and lock cylinder, and an inside plate assembly including a bracket supporting a spring loaded bolt, an enabling mechanism in the form of a collapsible linkage coupled to the bolt, a manual actuator, and a cover.

Abstract: A safety latch for securing a cover on a machine integrating a safety swi with a latching swing bolt. The swing bolt for securing the cover pivots between a latched position and an unlatched position. The switch for energizing and de-energizing the machine is switchable between a closed position and an open position. An interlock flag must be moved to a predetermined position before the latch can be released. Moving the flag to the predetermined position causes the safety switch to open, de-energizing the machine. A portion of the swing bolt obstructs the interlock flag from closing the switch, thus preventing the machine from being energized when the cover is unlatched. The swing bolt is preferably threaded and a nut is provided to clamp the threaded swing bolt in the latched position and secure the cover. A shoulder of the interlock flag prevents the nut from being loosened unless the interlock flag is moved to the predetermined position in which the machine is de-energized.

Abstract: A system for preventing the automatic or inadvertent opening of an aircraft door or access hatch that has not been closed and locked properly provides an increase in the overall flight safety of aircraft. The system includes a door monitoring system (1), which is connected to at least one of a cabin pressure control arrangement (4), a cabin temperature control arrangement (5), and an air tap system control arrangement (36). The door monitoring system (1) provides a signal indicating if at least one door or access hatch is not properly closed and locked. The controllers (4, 5, 36) receive the door monitor signal at respective inputs and also receive information necessary for determining the current flight configuration of the aircraft from various other aircraft systems, such as a landing gear control arrangement or an engine monitor arrangement.

Abstract: A safety hasp (10) is attached to a door (14) and a door frame (16) of a walk-in cooler by threading a rod (35) from inside the cooler, through a bore (34) in door (14) into an aperture (37) of a hasp hinge plate (25) or staple plate (29). The trailing end of rod (35) has a handle (38) which can be turned to release hasp (10) for unlocking door (14) from inside the cooler. Handle (38) has a disc portion (39) including an illuminator (40) for providing temporary "emergency" lighting.

Abstract: A latch for releasably securing the trunk lid of a vehicle which may be actuated by a person inside the trunk in emergency situations. The device includes a latch assembly operable by both a conventional exterior lock assembly and a release assembly positioned within the trunk compartment. The release assembly utilizes a flexible cable coupled to a detent lever within the latch in which the cable may be pulled by a person inside the trunk to open the trunk lid. Alternatively or additionally, the release assembly may utilize a spring loaded button which engages the detent lever to release the lid upon actuation. An alternate embodiment of the present invention includes a luminescent coating on the release assembly.

Abstract: A security system for use on doors which have an electrically operated door locking mechanism is disclosed, which security system is operative to provide a preset egress time delay following an effort to exit through the controlled door before actuating the door locking mechanism to unlock the door and allow egress. During the egress time delay, the system provides a visual input of the time remaining until the door locking mechanism will unlock the door to allow egress or access therethrough. In the preferred embodiment, a speech synthesizer and digital display is also utilized to inform the individual demanding egress or access of the delay, and to provide other information as desired.

Abstract: An emergency mechanism is incorporated in a powered back door closing device of a motor vehicle. During the time when, with the aid of a driving mechanism, a drawing mechanism of the door closing device is pulling down the back door through a striker secured thereto, the emergency mechanism forces a locking plate of the closing device to pivot from a locking position to an unlocking position thereby to release the striker from the drawing mechanism. The emergency mechanism comprises a cam member which is powered by the drive mechanism and rotatable about its axis in both directions; and a cam follower member which is pivotally connected to the locking plate.

Abstract: A safety latching device for refrigerators of the type having at least one vertically-hinged door extending the entire length of the refrigerator. The safety latching device includes an elongated support base having a latching bar rotatably attached thereto secured to the top of the refrigerator, and a coupling plate having a slot therein secured to the top of the refrigerator door in alignment with the latching bar. To prevent the refrigerator door from being opened by a young child, the latching bar is positioned in the coupling plate slot. To allow access to the refrigerator by an adult, the latching bar is rotatably moved from the slot. For refrigerators having more than one vertically-hinged door, the safety latching device utilizes a pair of latching bars with a pair of corresponding coupling plates.

Abstract: A motor-vehicle latch mounted on a door has a front end pivoted about an upright axis, a rear end with a rearwardly directed end face, and an inside face immediately adjacent the rear end face, the door being movable relative to a frame member having a forwardly directed front face confronting the rear end face of the door in a fully closed position of the door. A holding element fixed to the front face of the frame member has a part projecting inward past the inside face of the door in the fully closed position of the door and having a support face facing forward toward the rear end face of the door. A retaining member, for example a bolt or wedge, is fixed in the holding element and a retaining element on the rear end face of the door is engageable with the retaining member to latch the door in the fully closed position.

Abstract: A restraint device for preventing access to a compartment having a door includes a plate. The plate includes first and second ends, the second end thereof including an aperture. Structure is provided for mounting the plate to the compartment. A closure device is provided, and is slidably disposed within the plate aperture for selectively blocking the opening of the compartment door. The closure device is disposed generally perpendicular to the plate and is adapted to be positioned adjacent to the compartment door and is operable between first and second positions. In the first position, the closure device rigidly engages the plate and is positioned adjacent to the compartment door to thereby prevent opening of the compartment door. In the second position, the closure device is disengaged from the plate and is slidable to a position to allow opening of the compartment door.

Abstract: A sliding side door of a van type automotive vehicle has a door latch mounted in the back end of the sliding door. The door latch includes a pivoted operating lever that is rotated to unlatch the door. The operating lever is connected to a pivoted transfer lever by a vertical rod. The transfer lever in turn is connected to a long horizontal rod that is pulled forward by an outside handle near the front of the sliding door to rotate the operating lever and unlatch the door. The pivoted operating lever is also engaged by a pivoted release lever that is connected to another long horizontal rod that is pulled forward by an inside door handle that is also near the front of the sliding door to rotate the operating lever and unlatch the door. The door latch is equipped with a block out mechanism that prevents rotation of the pivoted operating lever when the vehicle decelerates rapidly.

Abstract: A safety draw-latch which can be opened by normal adults but not by people with less coordination such as children or mental defectives. It differs from normal latches in that a complex set of actions must be carried out in one continous movement.

Abstract: A security cabinet for storing of articles of value which is designed to prevent unauthorized access into the security cabinet by individuals not possessing sufficient physical strength such as young children. The latching arrangement of the security cabinet can be located in a position requiring an inward force of a sufficient magnitude to be applied to the door in order to permit the door to be opened and thereby gain access into the cabinet.

Abstract: A hatchback door for an automobile hinged at its upper end to a body of the automobile includes an outer panel having a handle to open the hatchback door; an inner panel connected to the outer panel, the inner panel having an opening immediately in front of the handle; a door lock assembly mounted at the lower end of the door; and a rod assembly provided between the inner panel and the outer panel connecting the handle and the door lock assembly.

Abstract: The locking device comprises a first hook cantilevered out from a rocking pin to support a catch member and bearing against a retractable locking member that opposes rocking movement of the first hook, and a second hook adjacent to the first hook and associated therewith by a link member so that when the first hook is closed, the second hook is kept in a position close to a position in which the second hook supports the catch member.

Abstract: A multi-controlled security lock includes a slide which can be moved back and forth with respect to frame by at least one of two control devices, such as, a key control device or a remote electric control device. A carriage mounted on lock bolts is movable back and forth with respect to the frame. An irreversible actuating device is located between the carriage and the slide for permitting a movement of the carriage between an open position and a locked position in response to a movement of the slide and for preventing a movement of the carriage between the locked position and the open position in response to a force exerted on the carriage.

Abstract: Disclosed is a locking mechanism to retain and seal a blast door of an amition compartment against a compartment door frame after an explosion in the compartment. The mechanism has a linkage connected to a panel that is blown off the compartment by the explosion, whereby the panel actuates the mechanism. The linkage turns a cam a controlled amount so that the cam contacts the door in an optimal position for retaining and sealing the door.

Abstract: A child resistant latch having a latch operating assembly comprising a latch operating assembly and a striker bar or keeper plate assembly, one of which is supported on a gate and the other of which is to be supported on a gate post. The latch operating assembly comprises a closed box supported a predetermined distance above the striker bar or keeper plate assembly to permit operation only by an adult or tall child. A locking latch member is supported for vertical movement into and out of latching engagement with the striker bar or keeper plate. A guard box surrounds the striker bar or keeper plate when the latch member is in latching position to prevent opening other than by said operating means. A guide tube extends to a point just above the guard box and has a reciprocally movable rod guided for movement therein which interconnects a key-operated, latch operating lever and the latch member for movement in a vertical direction.

Abstract: The invention relates to an emergency exit window for vehicles such as school buses. Spring biased latches are carried by the upper part of a window pane. The spring biased latches have bolts which engage stops at various locations on opposite sides of the window frame surrounding the window. The latches may be normally operated individually by hand to riase and lower the window between a ventilating position (including half-open and other partially open positions), and a fully closed position. The window is equipped with an emergency handle which may be used to pull the latches towards each other, and thereby enable the window to assume a fully open position. In the fully open position, inversion stops prevent the window from inadvertently closing in the event that the vehicle is overturned. The latches are housed in a latch cover which has latch openings. The latch openings are sized so that they prevent manual use of the latches to cause the window to be fully opened.

Abstract: A latchable safety protection device for covering the cassette receiving opening of a cassette tape recorder for preventing the introduction of foreign elements into the recording chamber in which the device includes a plastic body having an integral hollow insert portion and cover portion. A pair of spring biased latching members which engage the sides of the cassette receiving opening, and a pair of slidable release members for retracting the spring biased latching members to permit the withdrawal of the device from the cassette receiving opening to allow the insertion of a tape cassette.

Abstract: A shock-activated lock for attachment to a cabinet that prevents the cabinet door from opening in the event of an earthquake. The lock includes a slotted engaging member attached to the cabinet door, and a lock housing attached to the cabinet frame that contains a ball that normally rests on a raised shelf. The engaging member extends into the housing when the door is closed. In the event of an earthquake, the ball falls into the slot in the engaging member, preventing the engaging member from withdrawing from the housing, thus preventing the cabinet door from opening.

Abstract: A child-proof latch which prevents a child from directly accessing the latch member (arm) itself, thus rendering it extremely difficult for a child to open a cabinet secured by the latch. The latch of the invention comprises a latch member, a support for the latch member, and an actuator member for selectively moving the latch member between its extended position (in which the cabinet is prevented from opening) and retracted position (in which the cabinet is allowed to open). Mutually engageable locking surfaces are provided on the actuator and the support, such that the actuation is normally locked with the latch member in its normally extended position. In order to open the cabinet, it is necessary to first disengage the locking surfaces and then depress the actuator sufficiently to move the latch, which is biased toward its extended position, to its retracted position. As it is unlikely that a child could accomplish both tasks, the latch is extremely secure.

Abstract: Combined vehicle vent and escape hatch having a frame bounding a roof opening, a cover hingedly connected to opposite sides of the frame by hinge brackets for limited venting movement relative to one or more of the sides, one of the brackets being separable into cover and frame parts and normally prevented from separating by a cammable release rod engaging the cover part and a frame-backed movable stop plate backing the rod, and an emergency button instanding from the cover and when pushed operative to project the cover from all of said sides to full venting position and separate the parts of the separable bracket for enabling the cover, as an escape hatch, to be swung about the opposite bracket to open position. For extending the service life of the combined vent and hatch, an inner panel of the cover is backed by a rigid metal backup plate on which, for relieving the panel of stress, are hung the operating parts attached to the cover.

Abstract: A child protecting mechanism for a door lock apparatus of an automotive vehicle is installed in a door panel formed to have an opening. The mechanism includes an operating device disposed in the opening in operative association with a child protecting lever and adapted to be rotated with respect to the door panel to operate the child protecting lever.

Abstract: A door stop apparatus is arranged for securement to a door for cooperation with a door jamb, wherein a bracket mounting the slide portion of the organization includes an abutment leg orthogonally mounted to a slide bar and the slide bar further includes an abutment flange limiting projection of the abutment leg beyond the associated door relative to the support bracket. A modification of the invention includes a crossed tubular bracket structure utilizing a severed abutment leg within each tube section, and each abutment leg relative to an associated slide member is of a varying length to provide for adjustment of gap of an associated door relative to an associated door frame.

Abstract: A fire-retardant pivoted door assembly with fire activated latching members includes a metal door frame having jambs and a header in which a fire-retardant door is mounted by a hinge assembly with a lower temperature resistance that the door and frame. Fire actuated latch bolt assemblies in the door are spaced vertically along the hinge side of the door, and include a housing providing an elongated cavity opening at the edge of the door. A latch bolt is slidably seated in the cavity and is biased towards the opening of the cavity. A fusible closure extends across the opening of the cavity and retains the latch bolt against the biasing pressure, and the hinge jamb has a spaced recess formed therein to receive the latch bolt upon melting of the fusible closure.

Abstract: A peristaltic pump comprising a housing (19), including a base (21), a resilient tube (27) and a peristaltic pumping fingers (31) carried by the supporting structure. The tube (27) is positionable on the base (21) in a proper position and an improper position. In the proper position, the peristaltic pumping fingers (31) can properly progressively squeeze the tube to pump a fluid through the tube and in an improper position. A door (23) is mounted on the housing (19) for movement between an open position and a closed position. A latch (25) includes a pivotable latch member (51) on the door (23) and a fixed latch member (55) on the housing (19). The pivotable latch member (51) is movable between a latching position in which the door (23) is locked in the closed position and a releasing position in which the door (23) is not locked in the closed position. If the tube (27) is in the improper position, the pivotable latch member (51) is prevented from being placed in the latching position.

Abstract: An explosion vent installation for a closed space comprising a door swingably mounted for outward movement. An elongated pressure collapsible pin is supported at one end, by an arm end portion overlying the door edge portion opposite its hinges and in the direction of the door opening movement. The other end of the arm is pivotally connected with a pin supported body mounted on a door jam. The pin is supported at its other end by a pin support bolt in the pin support body. The arm is moved in a pin collapsing direction by the door opening in response to excess pressure above a predetermined value in the space monitored.

Abstract: A structural latch is provided for mechanically joining vehicle coupling mechanisms such as spacecraft coupling and berthing mechanisms. The structural latch is manually operable to join the coupling mechanisms. Each structural latch is configured to be readily removable from the joined coupling mechanisms in the event the latch becomes inoperable so as to effect coupling mechanism separation.

Abstract: A latch for a motor-vehicle door comprises a housing, a door bolt engageable in and separable from the housing, a pivotal lock fork in the housing engageable around the bolt, and a release lever operatively coupled to the lock fork. Inside and outside latching elements respectively accessible and actuatable from inside and outside the door can each displace a common latching lever pivotal in the housing between a latched position and an unlatched position. Inside and outside locking elements respectively accessible and actuatable from inside and outside the door can similarly displace a common locking lever pivotal in the housing between a locked and an unlocked position. A coupling element connected to the locking lever is displaceable thereby between coupling and uncoupling positions respectively corresponding to the unlocked and locked positions of the locking lever.

Abstract: The locking apparatus for a vehicle according to the present invention has a child-lock mechanism in which a door of the vehicle can be opened not by operating the inner door opener handle but by operating the outer door opener handle. The changeover control portion of this child-lock mechanism is designed to be rotated, pushed or pressed to function. The opening in which the changeover control portion is fitted is formed into the same shape as that of the changeover control portion so that no gap is formed therebetween. A lock-direction and an unlock direction are indicated on the outer surface of the changeover control portion.

Abstract: A motor-vehicle door latch for securing together two relatively movable body parts has a housing mounted on one of the parts, a bolt mounted on the other part and engageable in the housing, a fork pivotal in the housing between a locked position engaging around the bolt when therein and an unlocked position permitting the bolt to enter and exit the housing, a pawl pivotal in the housing between a holding position retaining the fork in the locked position and a freeing position permitting the fork to move between its positions, and an actuating lever engageable with the pawl and pivotal in the housing between a holding position holding the pawl in its freeing position and a freeing position in which it does not impede movement of the pawl between its position. A position-holding element engageable in the housing with the lever is movable between a blocking position preventing movement of the lever of the freeing position and an unblocking position permitting movement of the lever between its positions.

Abstract: A tamper resistant lock construction for a door, drawer, or similar closure is disclosed. A lock bolt releasably locks the closure. A plurality of finger openings are provided, each finger opening adapted to receive a finger. At least one actuator in each finger opening is positioned to be selectively operated by a finger inserted into the finger opening. The lock bolt is released only in response to the actuation of a preselected combination of the actuators.

Abstract: In order to keep the latched condition of a door lock proper even when the associated door is considerably deformed due to a vehicle collision or the like, the outside lever extending from the door lock proper is provided with a pointed portion which is directed toward an outer panel of the door. Upon deformation of the outer panel, the pointed portion is forced to stick into the deformed outer panel establishing a locked engagement therebetween and thus preventing the door lock proper from taking the unlatched condition.

Abstract: A lock monitor for fitting to lockable objects that have locks that incorporate a bolt mechanism incuding a slidable bolt and mortise. The opening of the mortise is larger in at least one dimension than the engaging face of the slidable bolt. The lock monitor comprises a status indicator, a contact member mountable to the bolt mechanism adjacent to the slidable bolt and it communication with the status indicator, and an actuating arm mountable on the slidable bolt such that the actuating arm engages the contact member when the slidable bolt is disengaged from the mortise. When the actuating arm engages the contact member it causes the status indicator to register a change in status in the lock.

Abstract: A child protecting mechanism in a door lock apparatus includes a base internally accommodating an opening/closing mechanism, an opening lever pivotally supported on the base for actuating the opening/closing mechanism, an inside lever and a child protecting lever pivotally supported on the base, and an opening lift lever having one end connected to the inside lever and another end connected to the child protecting lever and capable of being engaged with and disengaged from the opening lever. Turning the child protecting lever causes the opening lift lever to rock to disengage the opening lever and the opening lift lever, thereby preventing the turning motion of the inside lever from being transmitted to the opening lever.

Abstract: Damages to load supporting structures in an aircraft or spacecraft resulting from an explosive decompression are minimized or avoided by rapidly making available at least one relatively large flow-cross-sectional area. This is accomplished by mounting a decompression panel with a plurality of releasable mounting locks to a frame. The locks are so constructed that the panel along can be blown out in one direction and the panel with the frame and the locks can be blown out in the opposite direction in response to a rapid pressure increase which shears off shearing pins normally holding locking levers in a clamp-down or hold-down position. The frame has support flanges against which the panel and a wall section rest. The locks rest on and are secured to the frame and respond to defined release pressure ratios between the inside and outside in either direction. Each lock has at least one locking or clamp-down lever for the panel and one for a wall section.

Abstract: A door latch coupling arrangement includes a detent release member connected to an inside operator by a freewheeling connection. An intermittent member is movable between coupled and uncoupled positions with respect to the detent release member and pivotally connected to the inside operator to establish an operative connection between the detent release member and inside operator when in coupled position. A manual control member shifts the intermittent member between its coupled and uncoupled positions.

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 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: An escape door system for a bus is described which can be easily and quickly opened to enable passengers to exit the bus after an accident. The door can be used as a normal exit door or it may be completely detached and separated from the bus. Preferably the door is installed in the rear wall of the bus. A window adjacent the door can also be pivoted out of the way after the door has been separated from the wall to facilitate ingress and egress of people.

Abstract: An automotive vehicle door lock apparatus consists of a latch mechanism having a latch for latching a door by latching a striker secured to a vehicle body upon closing the door, a door release or unlatch mechanism for unlatching the door by releasing the striker from the latch and a lock mechanism for locking the door by operationally disabling the unlatching mechanism. The unlatching mechanism is in cooperation with a disconnecting mechanism having an extension arm which extends laterally toward the outer door panel. Upon a lateral car crash, the extension arm is pushed laterally inward by the crushed outer door panel to operate and operationally disable the unlatching mechanism independently of the unlatching mechanism.

Abstract: A push-type and a pull-type door-latch opener capable of use with a plunger-type fusible pin operated fire-safety lock mechanism including a mounting plate, a horizontal pivoting rod attached to the plate, a vertical pivoting rod attached to the plate at a right angle to and adjacent the horizontal pivoting rod, a horizontal bell crank pivoted about the vertical rod and having a first arm projecting into the plane of the door for operating the door-latch and a second arm engaged by a portion of a door handle pivoted on the horizontal rod, and a torsion spring coaxial with the horizontal rod for biasing the door handle into a preselected position.