Abstract: A handleset having a half round spindle for operating a latch assembly when rotated from a neutral orientation, a cylinder lock having a key operated cylinder assembly which rotates a round spindle, a half round driving pinion mounted for rotation on the round spindle, a rack having teeth engaged with the pinion, a connector displaceable between down and up positions, a pivotal thumb piece having a lever for displacing the connector from the down position to the up position, the connector having an arcuate slot, a locking arm having an arcuate flange for location in the arcuate slot, an axially extending pin, and a central opening, the round spindle including a cam secured thereto at a location selected so that the cam will be located within the opening, the cam and the opening being selectively configured so that turning the key from the neutral orientation to the lock open position will result in the cam rotating the locking arm from a first position whereat the arcuate flange is at one end of the arcuate s

Abstract: A latch release disabling device for use in a vehicle. The device can be applied to the release mechanism of latches on passenger doors, hoods, deck lids and similar features such as latch locks. The device is useful in preventing the unlatching or unlocking of a latch by disabling the latch or lock release mechanism. The device is responsive to electrical control means and can be remotely activated.

Abstract: A door security device includes an elongate support bar, attachment mechanism mounted to the support bar, opposing blocking members attached to opposing ends of the support bar, and an actuation mechanism. In one embodiment, the attachment mechanism includes a pair of generally J-shaped hooks which engage a portion of a door. The blocking members include a surface thereon which rests flush against the door frame. The actuation mechanism includes a handle assembly which is pivotally connected to the hooks. The handle assembly includes a camming surface thereon which contacts the support bar. The security device is actuated by positioning the hooks about the door and positioning the blocking members flush against the door frame. The handle is then pivoted, causing the camming surface to pivot about the support bar and pull the hooks away from the door and towards the support bar.

Abstract: A door lock having upper and lower vertically spaced actuator seats centered on respective vertically spaced upper and lower axes has a handle assembly having inner and outer mounting plates horizontally flanking the door lock. An upper stem fitted in the upper actuator seat and supported on the inner plate can rotate about the upper actuator axis and carries an inner handle. A lower stem fitted in the lower actuator seat and supported on the outer plate can rotate about the lower axis. An outer stem separate from the inner stem and supported on the outer plate can rotate about the upper axis coaxially with the inner stem and carries an outer handle. Gearing interconnects the outer and lower stems for rotation of the lower stem about the lower axis on rotation of the outer stem about the upper axis.

Abstract: A motor-vehicle door latch has a latching element movable between a latched position and an unlatched position, and a locking pawl engageable with the element and displaceable between a locked position retaining it in the latched position and an unlocked position allowing it to move into the unlatched position. Power actuation is effected by a planetary-gear drive and including a reversible electric motor, a sun gear rotatable by the motor about the planetary axis, at least one planet gear meshing with the sun gear, a planet carrier carrying the planet gear, and a ring gear meshing with the planet gear.

Abstract: A vehicle door latch assembly including a pivotal rotor engagable with the striker pin. A pawl is moveable between a blocking position retaining the rotor in engagement with the striker pin, and a release position permitting the rotor to disengage the striker pin. A link is moveable, manually or by means of an electric motor, between a coupled position engaging the pawl and an uncoupled position disengaged from the pawl. The link also engages an actuator member when the link is in the coupled position, and is disengaged from the actuator member in the uncoupled position. The actuator member may be operated, when the link is in the coupled position, to move the pawl to the release position. In some embodiments, a double lock feature is provided in which a lock/unlock lever is operatively coupled to the link, to a first fork, and to a second fork. The first or second fork may be operated to urge the link between the coupled and the uncoupled positions.

Abstract: A vehicle door latch has a fork bolt lever that is latched by a detent lever. The detent lever is operated by an intermittent lever that is operated by a transfer lever that is actuated by inside and outside door handles via operating levers. The door latch includes a locking lever that disconnects the door handle from the intermittent lever when it is in the locked position. The door latch also includes an anti-theft feature in the form of an electrically actuated "dead bolt" lock that is engaged and disengaged solely by a key lock cylinder. The door latch further includes an override feature that unlocks the door latch mechanically in the event of electrical power failure.

Abstract: A vehicle door lock device has an inside lock lever connected to a lock member on the inside of the door, a key lock lever connected to a key cylinder of the door, and a super lock member for blocking a displacement of the inside lock lever in its unlocking direction after engaging with the inside lock lever at its locked position. The key lock lever has a releasing protrusion adapted to abut on the super lock member in order to release or unlock the super lock when the key lock lever rotates. An engagement of the super lock member with the inside lock lever is adapted to be unreleasable or unlockable by a door-open-operation of the open lever.

Abstract: A door lock device has a one-motion door opening mechanism. The door lock device comprises a latch mechanism consisting of a latch and a ratchet preventing the latch from reverse-rotating, an outer opening lever, a lock lever, a link operatively placed between the outer opening lever and the lock lever, an inner opening lever connected to the inside opening handle of the vehicular door. The link and the inside opening handle are so connected that the link moves apart from the pressing piece of the ratchet when the inside opening handle excessively rotates. Consequently, when it is at the locked condition and the inside opening handle is operated to open the door, the ratchet is disengaged from the latch and the link is pressed by the pressing piece displacing it to the unlocked position. When the inside opening handle is excessively rotated, the link moves apart from the pressing piece.

Abstract: A device is provided for use in actuating a locking lug in a cylindrical lockset. The device includes a mechanism for moving the locking device between door handle locking and unlocking positions. The moving mechanism includes a plunger having an axis, a locking-assist spring coupled to the plunger and the locking lug, and a mechanism for reciprocating the plunger along its axis in opposite directions. To lock the cylindrical lockset, the reciprocating mechanism moves the plunger along its axis in a locking direction against the locking-assist spring so that the locking-assist spring is moved toward the locking lug to urge the locking lug to its door handle-locking position. To unlock the cylindrical lockset, the reciprocating mechanism moves the plunger along its axis in an opposite, unlocking direction away from the locking lug so that the locking lug is allowed to move to its door handle-unlocking position.

Abstract: An apparatus for controlling a primary actuator comprises a primary moveable link connected to the primary actuator, a secondary actuator, and a secondary moveable link connected to the secondary actuator. The secondary moveable link is engageable and disengageable with the primary moveable link and the primary and secondary links are guided for movement along a predefined path. The user of the apparatus is able to control the engagement and disengagement of the primary and secondary links such that movement of the secondary actuator is transferred to the primary actuator when the links are engaged and such that movement of the secondary actuator is not transferred to the primary actuator when the links are disengaged.

Abstract: A mounting hub is arranged for securement orthogonally relative to a steering wheel shaft, such that the mounting hub includes a lock cylinder arranged for rotation of an actuator rod arranged to effect rotating a cam member to project a plurality of lock plates from within an extension tube of the mounting hub for reception of the lock plates within complementary cavities of a steering wheel tubular hub to lock the associated steering wheel relative to the steering wheel shaft.

Abstract: An outer handle of a door lock includes a tube extended inward of the door, a lock disposed in the tube, a stub fixed on one end of a shaft and having a square section and a circular section, a cylinder rotatably received in the tube and coupled to the lock and including two pairs of notches of different depth, a board engaged with either of the sections. The shaft can be rotated by the outer handle when the board is engaged with the square section of the stub and can not be rotated when the board is engaged with the circular section. The stub can be rotated by the shaft when the board is engaged with either of the sections.

Abstract: A door security device includes an elongate support bar, attachment mechanism mounted to the support bar, opposing blocking members attached to opposing ends of the support bar, and an actuation mechanism. The attachment mechanism includes a pair of generally J-shaped hooks which engage a portion of a door. The blocking members include a surface thereon which rests flush against the door frame. The actuation mechanism includes a handle assembly which is pivotally connected to the hooks. The handle assembly includes a camming surface thereon which contacts the support bar. The security device is actuated by positioning the hooks about the door and positioning the blocking members flush against the door frame. The handle is then pivoted, causing the camming surface to pivot about the support bar and pull the hooks away from the door and towards the support bar.

Abstract: An anti-theft device for a motor vehicle comprises a steering wheel 10 having a centre boss 12 mounting the steering wheel onto a steering column 11. The boss is slidable axially of the steering column between a first position in which complementary splines 14/15 on the steering column and boss engage each other to secure the steering wheel and steering column for co-rotation and a second position in which the splines are disengaged so that the steering wheel is freely rotatable on the steering column. A lock 21 can secure the steering wheel in a selected one of the first and second axial positions by engaging in a groove 17 or 18 in the steering column.

Abstract: A vehicle door latch has a selectively activated security lock that prevents a vehicle door from being unlatched by an inside door handle. The security lock is activated and deactivated when the vehicle door is open by inserting a key or other probe-like instrument into a slot in an inner panel of the vehicle door to manipulate a moveable arm of the security lock.

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 vehicle door latch has a fork bolt lever that is latched by a detent lever. The detent lever is operated by an intermittent lever that is operated by a transfer lever that is actuated by inside and outside door handles via operating levers. The door latch includes with a locking lever that disconnects the door handles from the intermittent lever when it is in the locked position. The door latch also includes an interlock between the intermittent lever and the locking lever that is automatically engaged in response to the position of the detent so that the door latch cannot be locked when the fork bolt lever is in an unlatched position. Consequently the door latch can only be locked when the door is closed and the fork bolt lever is in a latched position. This prevents the driver from locking his or her keys in the vehicle.

Abstract: An electromechanical actuator for an automotive door latch has a selectively activated feature that prevents a rear door from being unlatched by the inside door handle. The feature is electrically activated by a switch or the like that is conveniently located near the driver and out-of -reach of the rear seat passengers.

Abstract: A modular latch assembly is disposed in a sliding van door for unlatching the van from a closed position and actuating a roller latch release so that the door can be moved from the fully open position. The latch assembly includes interior and exterior handles pivotally mounted relative to a mounting plate. The handles alternately engage and forcibly rotate a crank bar supported on the mounting plate. A motion transmitting core element extends from the crank bar to a rear latch supported on the door for controlling the rear latch. An interior lock button and an exterior lock cylinder move the crank bar into and out of operative engagement with the interior and exterior handles. The interior and exterior actuator handles also control a roller latch release mechanism supported on the mounting plate.

Abstract: A motor-vehicle door latch has a housing, a latch fork pivotal on the housing about a latch-fork axis, engageable in a latched position with a door bolt to retain same and lock the door, and having a latching surface offset from the latch-fork axis, a main latching lever pivotal on the housing adjacent the fork about a main-lever axis substantially parallel to the latch-fork axis, and a secondary latching lever pivotal on the main lever about a secondary-lever axis substantially parallel to the latch-fork axis and having an outer end formed with a surface engaging the latch-fork surface in the latched position. A pair of stops define for the latching levers in the latched position of the latch fork a normal position with the surface in surface contact and an actuated position with the surfaces only in line contact. Thus to open the door the main lever is pivoted from the normal position to the actuated position and thereafter the latching-lever surface is slid off the latch-fork surface.

Abstract: A camper shell door latch which while locked is openable from within the camper shell by a push button nut which shifts out of locking engagement with a bushing shoulder of limited axial extent to free the latch for inside actuation.

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 casement window locking system includes a rotatable locking cam mounted in the frame jamb with a window catch access opening on one side and a locking lever access opening on the opposite side. The locking lever has a U-shaped inner end which embraces the locking cam when the two members are engaged and a tab on the locking cam engages a shoulder on the locking lever to prevent withdrawal of the locking lever until a tool is used to raise the locking cam when the tool is inserted through the catch opening. In an alternative embodiment, a spring clip may be placed on top of the locking cam and it includes a shoulder for engaging the shoulder on the locking lever. The removable locking lever makes it possible to install and finish the window without the locking lever and change locking levers to color coordinate with the room interior.

Abstract: A cylindrical lock is locked, the "locked" position is kept from the outside knob, which can not be revolved to open the door, but the inside knob is turnable to open the door after the lock is locked.

Abstract: A motor-vehicle door latch for use on a vehicle door having a handle and an inside locking element has a housing, a latch fork pivotal on the housing and engageable in a locking position with a door bolt to retain same and lock the door, an actuating lever pivoted on the housing and connected to the handle, a release pawl operatively engageable with the fork to release same from the locking position, and a link displaceable between a position coupling the actuating lever to the release pawl for displacement of the fork out of the locking position by actuation of the actuating lever and a position decoupling the actuating lever from the release pawl. Thus in the decoupling position actuation of the actuating lever will not unlock the door.

Abstract: A latching mechanism for mounting on a closure, such as a storm door. The mechanism includes an inside housing with a latch movably mounted on the inside housing and including a tongue movable between a latching position for engaging the striker plate defining the doorway, and an unlatching position in which the tongue permits opening of the door. An operating shaft extends through the closure and the inside housing and is pivotally mounted with respect to them. Inside and outside operators are mounted on the shaft. A cam is rotatable with the shaft and is axially slidable with respect to the shaft between an operative position in which the cam is located to move the tongue toward its unlatching position, and an inoperative position in which rotation of the cam does not cause movement of the tongue.

Abstract: The vehicle has a luggage compartment panel which carries a latch engageable with a striker mounted on the vehicle body. A release trigger carried by the latch is positioned near the striker when the latch engages the striker. An actuator member is movably mounted on the striker and has an actuator arm extending into proximity with the trigger. A remote release handle mounted in the operator compartment is connected to the actuator member so that operator actuation of the release handle moves the actuator member relative the striker to carry the actuator arm into engagement with the trigger and actuate the trigger to unlatch the latch. A hinge is interposed in the actuator member by which the operator may fold the actuator member to a folded condition removing the actuator arm from proximity with the release trigger so that operator actuation of the remote release handle moves the actuator member without releasing the latch.

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: 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: Lockset has within its outer tubular spindle a radial dog which, depending on its position, couples or decouples the spindle and the outer handle. Dog is moved from one position to the other by pin on rotary motor shaft screwing in or out a spring encircling the shaft and attached to dog. Motor is in inner tubular spindle.

Abstract: This invention relates generally to a child safety vehicle door lock with a blocking arrangement for selectively blocking operation of an operating handle to prevent release of the door latch by an unauthorized person such as a child passenger. The blocking arrangement includes a blocking lever of plastic material pivotally mounted of the latch frame for manual movement between blocking and non-blocking positions. The blocking lever and frame have detent elements for releasably locating the blocking lever in each of its positions. The blocking lever includes a portion, which when in the blocking position, is engaged on one side by the frame and engaged on the other side by the a portion of the operating lever.

Abstract: An over-loading idling lock set having an actuating shaft connected to an indoor lock core and an outdoor sealing block wherein the sealing block is connected to an outdoor lock core, and plural ball members pushed by corresponding restricting springs are disposed between the sealing block and outdoor lock core whereby the ball members are partially extended into corresponding restricting holes formed on the sealing block to associate the outdoor lock core with the sealing block. By means of turning an indoor or outdoor handle, the actuating shaft is rotated to open the lock set. When closing the lock set, a controlling bolt is inserted into a longitudinal groove formed on the indoor lock core to lock the same and thus when turning the outdoor handle, the ball members are separate from the restricting holes due to insufficient spring force. Therefore, the outdoor handle can only idle without opening the lock set.

Abstract: Disclosed herein is a latch device for use in a foldable backrest of an automotive seat.

Abstract: An operating mechanism suitable for use in a vehicle door latch mechanism comprising structural components for locking, the operating mechanism comprising:(a) an inside handle release lever for being operated from the inside of the door;(b) an outside handle release lever for being operated from the outside of the door;(c) structure for being engaged by the inside handle release lever and outside handle release lever, the structure being connected to release the structural components of the latch mechanism for operation;(d) at least one of the inside handle release lever and outside handle release lever being movable to a position whereat the release lever cannot engage the structure to release the structural components when operated.

Abstract: A door lock assembly includes a door lock operating unit having a locking arm, and an actuator for driving the locking arm to a locked position and unlocked position. The actuator has an operating lever which rocks together with the locking arm, a neutral position restoration level which, when in a neutral position, is in a state non-engagable with the operating lever and, when displaced from the neutral position, drives the operating lever to the locked position and unlocked position, an output member which makes contact with and separates form the neutral position restoration lever for driving the neutral position restoration lever to the locked position and unlocked position, and a motor for driving the output member.

Abstract: Lock (1) with electrically controlled setting, comprising two rotatably mounted coaxial components (32; 52, 41), of which one is connected to a locking means in order to move it and the other to an actuating means, at least one electromagnet comprising a magnet (49) and a coil (46), one of the elements of this electromagnet being rotatably mounted coaxially relative to the said component, in order to be driven in rotation from a first angular position to a second angular position when the coil receives an electrical pulse, a connecting element (55) mounted on the said first component and designed to be shifted between an active position engaged with the second component, in order to connect the said first and second components in terms of rotation, and a retracted position, and a cam (65) carried by the movable element (46) of the electromagnet and designed to act on the said connecting element (55), in order to shift it from its retracted position to its active position when the movable element (46) of the e

Abstract: An improved latch for a drop side crib having at least one drop-side movably disposed between two crib ends includes locking means carried by the movable side for engaging at least one of the ends to fix the position of the side with respect to the ends. Inaccessible actuating means on the side are effective to release the locking means, to allow the crib side to be moved. Manually operable control means are provided having a first disengaged position in which movement of the control means does not operate the actuating means to release the side; and a second, engaged position where movement of the control means operates the actuating means to release the side for adjustment or removal.

Abstract: A latch lock comprising a latch bolt adapted for movement between a latching and a retracted position, a first part including a boss adapted to be rotated by a door handle, and a second part adapted to move the latch bolt between these positions. A clutch is provided for transmitting rotation of the first part by the door handle to the second part to move the latch bolt to the retracted position when engaged and for freely rotating the first part by the door handle when disengaged. The clutch comprises a lever pivotally connected to the second part and the lever is provided with a spur which can be engaged by pivotal movement of the lever with a recess in the boss of the first part. The lever is biased toward engagement of the spur and recess and is operated to disengage the first and second parts by a locking device. In the locked configuration, the locking device can also operate to prevent movement of the latch bolt by abutment with the second part.

Abstract: A lock intended, for example, for a door and comprising a lock bolt and a knob, handle or corresponding device (4) and an electrically actuable coupling arrangement (7, 8, 9) arranged through the agency of an electric signal to connect the knob to the lock bolt, so that the lock bolt can be moved to a lock-release position by rotating the knob, but which in an electrically non-activated position is disengaged so as to prevent the lock bolt from being manipulated by rotation of the knob.

Abstract: A door lock is provided for use with a building wall having a door opening formed by building framing members and in which a door is pivotally mounted and movable between a closed and an open position. The door lock has a locking bolt which is slidably mounted by a slide block to the building framing members on the inside of the wall. A key operated assembly accessible from the outside of the wall is operable to move the locking bolt between a locking position in which a portion of the bolt extends behind the door and thus into the path of the door swing, and a nonlocking position in which the bolt is retracted into the slide block and thus spaced downwardly from the path of the door swing. Since the slide block is mounted to the building framing member, typically a two by four wooden stud, the door lock utilizes the strength of the building itself rather than just the strength of the door or its jamb.

Abstract: An electric lock comprising a solenoid which has a permanent magnet for attracting a plunger and an electromagnetic coil which is positioned adjacent the permanent magnet so as to control the magnetic flux of the permanent magnet. A cam member which has a cam surface formed at one end thereof engages an engaging pin when a bolt operating member is rotated so as to lock the electric lock so that an engaging rod is forced to move in the direction opposite to the direction in which an engaging bolt is biased, the other end of the engaging rod being connected to the plunger of the solenoid. A positive voltage application unit responds to an unlocking signal so as to temporarily cause a current to flow through the electromagnetic coil in such a way that the flux produced by the electromagnetic coil cancels the magnetic flux produced by the permanent magnet.

Abstract: A lock arrangement to be secured in a door panel is formed of as few parts as possible and includes a pair of knobs to be secured to the opposite sides of the door panel and an elongated latch bolt. The latch bolt is operated by an actuating pin eccentrically arranged within and extending between the knobs. The actuating pin interconnects the knobs so that they can be turned together. The knobs have the same outside configuration and the knob surfaces which face one another each have a recessed edge which fits into a bore formed in the door panel extending between the knobs. The actuating pin operating the latch bolt is located in the locking position of the bolt on an extension of the elongated direction of the bolt. A spring biases the bolt into the locking position. A retaining pin extends between and is centered relative to the knobs and secures the knobs to the door panel.

Abstract: A door lock in which the lock bolt is not retracted by direct action of the handles but is instead retracted by slide members acted upon by the handles, the slide members having means for engaging a further slide which carries the bolt. One of the engagement means includes an electromagnet and an engagement member. The engagement member engages the bolt carrying slide only when the electromagnet is energized, which occurs when an appropriate key has been inserted into the lock and verified.

Abstract: A security lock comprising a latch positioned at the edge of a door which is actuated to selectively lock or unlock the door. The security lock includes an optional key-actuated dead bolt which can provide additional security when needed. A mechanism for locking or unlocking the latch comprises a hand-actuated knob positioned on the inside of the door so that when the dead bolt is not in use, the latch mechanism may still be locked or unlocked simply by rotating the knob between two positions. The mechanism for locking the latch is disengaged when the latch is in the locked position. If the latch is in the locked position when the door is opened, when the door is closed the latch is automatically unlocked to prevent a person from accidentally being locked out.

Abstract: A multi-point closure control mechanism or lock especially designed for use with rear and/or side doors of a closed body highway truck, particularly a so-called panel truck, and for use with doors of military vehicles. The closure control mechanism comprises two dead bolts, slidably supported in suitable brackets adjacent to the upper and lower edges of a door near its free vertical edge, that engage keepers or catches in the form of plates on the vehicle body. Each bolt has a free running roller therein to facilitate entrance and retraction of the bolt into and out of engagement with its respective keeper or catch. The dead bolts are connected by rod members to pivots eccentrically located on a lock operating member rotatable in a frame member fixed to the door intermediate the bolts. The operating member also includes a cylindrical rod-like projection extending normal to the free edge of the door when the bolts are engaged with their keepers or catches at the top and bottom of the door.

Abstract: An improved rear seat back locking arrangement, in which in a motor vehicle adapted to communicate its passenger compartment with its trunk room when a rear seat back is turned down forwardly, a key cylinder or cylinder lock is provided on the seat back, so that when the key cylinder is operated for locking, with the seat back held in the erected state, the seat back can not be released from the locked state, whereby such possibilities that a mischievous child enters the trunk room from the compartment without permission or baggage in the trunk room is taken out from the compartment side may be positively prevented.

Abstract: A vehicle door locking system uses a simple latch mechanism (10) without internal locking means connected to an external door handle (28) through a collapsible bellows (32). A solenoid controlled valve (44), when open, vents the bellows to atmosphere, allowing the bellows to collapse and transmit no movement from the door handle to the latch mechanism or, when closed, presents collapse of the bellows, which then transmits movement of the door handle to the latch mechanism.

Abstract: Disclosed herein is an improved door latching device which is generally composed of two sections which are hingedly connected to each other, one section including a latch plate and a first control mechanism, the first control mechanism being capable of causing the latch plate to assume a non-latched condition, a half-latched condition or a full-latched condition, the other section including a second control mechanism and a third control mechanism, the second control mechanism being capable of transmitting the movement of the door inside handle to the first control mechanism, the third control mechanism being capable of disabling the second control mechanism from transmitting the movement from the door inside handle to the first control mechanism. With the hinge portion, the two sections are openable to assume a substantially flat configuration thereby to facilitate the mounting of parts to the casings of them.