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 having a housing with at least one deadbolt supported in the housing for movement between a retracted position and an extended position and biased toward the extended position by a spring, and a trigger mechanism mounted on the door separate from the lock body for engagement with a door jamb upon closure of the door, said trigger mechanism being adapted to hold the at least one deadbolt in the retracted position when the door is open in opposition to a spring bias, and to permit movement of the at least one deadbolt to the extended position upon engagement of the trigger mechanism with the door jamb.

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: 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 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 vandal-resistant torque sensitive release mechanism is disclosed for coupling and decoupling an actuating handle to a lock mechanism. The torque sensitive release mechanism is disclosed is in the form of a slip-clutch, with the rotational movement of the slip clutch being limited when excessive force is applied to prevent the actuating handle from moving to a position where it would interfere with the subsequent desired opening of the door.

Abstract: A vandal-resistant torque sensitive release mechanism for coupling an actuating handle to a lock mechanism. The torque sensitive release mechanism: is in the form of a slip-clutch, which utilizes spherical ball connectors in cooperating detents; is connected at one end to the operating handle via threaded engagement; and permits an adjustment of the disengagement force. A conventional type connection is provided at the other end of the slip clutch to allow a mutiplicty of different lock connections for coupling the handle operating to the operating lock mechanisms via the slip clutch.

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.

Abstract: A device for removing a damaged locking cylinder, which eliminates the need for removing the escutcheon plates, which employs an internal locking bolt acting in concert with locking arms mounted on a locking plate, to selectively tighten or loosen the locking cylinder, as required, by use of an external adjusting mechanism which mates and co-acts with the locking bolt. Also provided is a cylinder protector which is affixed over the locking cylinder to deter vandalism of the cylinder by use of a tool.

Abstract: A door locking assembly which facilitates removal and replacement of a damaged lockset without the need to remove the cylinder, levers or knobs, or the escutcheon plates, which includes a lockset mountable within a door, said lockset including a latch for locking the door, a spindle engageable with the lockset, said lockset including a bushing defining a spindle aperture for accommodating a first end of the spindle, said spindle being adapted to rotatably displace the bushing for actuating the latch, a handle for securing a second end of the spindle, said handle means defining a socket for withdrawing the spindle to remove the lockset from within the door.