Abstract: A lock assembly for a door includes a lock body for mounting above a door lever of the door and including a locking bolt supported in a housing of the lock body for movement between a retracted position and an extended position. The locking bolt is held in the retracted position and spring biased toward the extended position and releasable from the retracted position to move to the extended position in response to actuation of a trigger operatively coupled with the lock body. The lock assembly further includes a door lever assembly adapted for mounting on the door lever in rotative fixed relationship with the door lever, and operatively coupled with the locking bolt so that rotation of the door lever assembly causes movement of the locking bolt from the extended position to the retracted position.

Abstract: A lock assembly for a door includes a lock body for mounting above a door lever of the door and including a locking bolt supported in a housing of the lock body for movement between a retracted position and an extended position. The locking bolt is held in the retracted position and spring biased toward the extended position and releasable from the retracted position to move to the extended position in response to actuation of a trigger operatively coupled with the lock body. The lock assembly further includes a door lever assembly adapted for mounting on the door lever in rotative fixed relationship with the door lever, and operatively coupled with the locking bolt so that rotation of the door lever assembly causes movement of the locking bolt from the extended position to the retracted position.

Abstract: A door lever and mounting plate assembly attachable to a door and coupleable to a latch and spindle assembly in the door, including a. a mounting plate including an aperture therein mountable on the door with the aperture axially aligned with the spindle, b. a door lever assembly comprising a handle part with a bottom surface, and a pivot plate, the handle part being coupleable to the spindle, and the pivot plate being fixed to the bottom surface of the handle and having an area greater than the area of the aperture and being situated closely adjacent and underlying the aperture, such that when the handle is pivoted the aperture is at all times fully underlied by at least parts of the pivot plate, and d. a keylock cylinder mounted in the handle part with a linkage to engage and control rotation of the spindle.

Abstract: A lever and mounting plate combination attachable to the exposed vertical surface of a door that includes a latch assembly with a spindle extending horizontally outward from the vertical surface, the lever and mounting plate combination including a main plate mountable onto the door's exposed surface and having a window-like opening extending completely through the plate, a lever having a base part which is coupleable to the spindle and pivotable therewith and has an exposed outer part, and a lever plate fixed to the base part of the lever and pivotable with though lever and with the spindle when it is coupled to the lever, the lever plate closely underlies and contacts said inner surface of the main plate while at all times covering the window, the lever being engagable by a user to rotate the lever plate and simultaneously rotate the spindle to open the door.

Abstract: A multi-point exit door lock and method of installing same, the door lock including main lock and upper and lower lock modules. a push type panic bar, lock bolts associated with each of the lock modules, and a pull-type cable of predetermined length having its ends fixed to the main lock module and to each of the upper and lower lock modules, whereby pushing the panic bar opens all lock modules. The method of installing the new lock includes a template which is temporarily mounted to the exit door and rotated to successive positions for automatically and accurately marking all the drill holes for mounting all the lock modules at relative distances apart corresponding to the predetermined distances between them pre-established by the cables of predetermined length fixedly attached to the various lock modules.

Abstract: A latch lock system for a door that is mountable in a doorframe, the latch lock system including a main housing including a spindle and lever, a bolt having a nose part that is attractable to a magnet, the bolt being slidable in the main housing between extended and retracted positions, a spring biasing the bolt to its retracted position, a secondary housing including a strike plate in the doorframe, a magnet mounted in the secondary housing, the magnet having a magnetic force greater than the spring force which will pull the bolt to its extended position when the door is in its closed position and the bolt is aligned with the magnet.

Abstract: A door lever and mounting plate assembly attachable to a door and coupleable to a latch and spindle assembly in the door, including a. a mounting plate including an aperture therein mountable on the door with the aperture axially aligned with the spindle, b. a door lever assembly comprising a handle part with a bottom surface, and a pivot plate, the handle part being coupleable to the spindle, and the pivot plate being fixed to the bottom surface of the handle and having an area greater than the area of the aperture and being situated closely adjacent and underlying the aperture, such that when the handle is pivoted the aperture is at all times fully underlied by at least parts of the pivot plate, and d. a keylock cylinder mounted in the handle part with a linkage to engage and control rotation of the spindle.

Abstract: Apparatus for counteracting a suicide attempt of a person trying to hang himself from a cord extended over the top edge of a door which door has an inside upper surface facing the interior of the room, the apparatus including an elongated pressure sensor mountable on that inside upper surface of the door, the sensor having an exposed surface facing away from the inside surface of the door, that exposed surface being responsive to a force applied thereagainst by a segment of a cord when it is draped over the top of the door and hanging downward adjacent the inside surface, and the apparatus being adapted to forward an alarm signal indicating the sensing of the force by the cord, and an electrical controller to forward an alarm signal indicating that the sensor has sensed the downward force.

Abstract: A lever latch lock assembly including: a. a lock housing mounted in the door including a lock bolt movable along a first axis, a spindle extending along a second axis generally perpendicular to the first axis, the spindle extending outward at each of the interior and exterior sides of the housing and terminating in opposite ends, and a transmission which converts rotation of the spindle to axial motion the lock bolt, b.

Abstract: A delayed egress paddle door lock system operable with a door that is pivotally mounted in a door frame, including a. a main lock module with a lock bolt, b. a push paddle for driving the lock bolt from its locked position to its unlocked position, and c. a delayed egress lock module mountable on the door and including, a locking element having a restraining position where it engages a restraining element on the frame and restrains the door from being opened, and a control member including a timer, adapted to sense when the push paddle has been pushed, move the locking element to its restraining position, activate the timer for a predetermined time delay period while the locking element is in its restraining position, and afterward to move the locking element to its release position, whereby the door becomes openable from the push paddle.

Abstract: Apparatus for counteracting a suicide attempt of a person trying to hang himself from a cord extended over the top edge of a door which door is mounted in a door frame in a room, where the door has a top edge facing upward, a latching edge, an inside surface facing the interior of the room with an upper portion thereof generally adjacent the top edge, an opposite outside surface, and a latch assembly with a latch bolt extendible outward of the latching edge, and the frame includes a strike plate for cooperation with the latch bolt, the apparatus including: a. an elongated pressure sensor mountable on the inside surface at the upper portion thereof, the sensor having an exposed surface facing away from the inside surface, the exposed surface (i) being responsive to force applied thereagainst by a segment of a cord when draped over the top of the door and hanging downward adjacent the inside surface, and (ii) being adapted to forward a signal indicating the sensing of the force by the cord, and b.

Abstract: A lever latch lock assembly including: a. a lock housing mounted in the door including a lock bolt movable along a first axis, a spindle extending along a second axis generally perpendicular to the first axis, the spindle extending outward at each of the interior and exterior sides of the housing and terminating in opposite ends, and a transmission which converts rotation of the spindle to axial motion the lock bolt, b.

Abstract: A multi-point exit door lock and method of installing same, the door lock including main lock and upper and lower lock modules. a push type panic bar, lock bolts associated with each of the lock modules, and a pull-type cable of predetermined length having its ends fixed to the main lock module and to each of the upper and lower lock modules, whereby pushing the panic bar opens all lock modules. The method of installing the new lock includes a template which is temporarily mounted to the exit door and rotated to successive positions for automatically and accurately marking all the drill holes for mounting all the lock modules at relative distances apart corresponding to the predetermined distances between them pre-established by the cables of predetermined length fixedly attached to the various lock modules.

Abstract: A signal transfer assembly supplies a signal to unlock a door by controlling a lock of the door. The signal transfer assembly includes a transfer strip assembly in the door frame for receiving a deactuation signal, for passing the deactuation signal to a transfer tip assembly in the door, and for passing the deactuation signal to the lock to unlock the lock.

Abstract: A signal transfer assembly for, e.g., supplying a signal to unlock a door, includes a transfer strip assembly in the door frame for receiving a deactuation signal and for passing the deactuation signal to a transfer tip assembly in the door and thence to the lock.

Abstract: An electromagnetic door lock and release mechanism is disclosed in which the electromagnet is contained within a separate sub-assembly which is electrically connected to the control circuitry by quick connect type of frictional contacts. Accordingly, the electromagnet portion of the system may be changed without requiring the maintenance person to have access to the wires that connect the electromagnetic door lock and release mechanism to its control circuitry. This advantageously permits replacement of the electromagnet without requiring the services of an electrician.