Abstract: An easily installed delayed egress lock system that comprises a control module and a latching mechanism attached to the door jamb and a bolt attached to the door. The control module comprises a shell that houses the control circuitry. The latch mechanism comprises a casing that houses a keeper and actuator, two interconnecting channels for retaining the keeper and actuator, and an electrical solenoid. The mechanism also defines a port that receives the bolt when the door is shut. The bolt comprises an elongated body supported by a base and terminating with a spaced-apart head. Preferably, the primary door lock signals the control module when released to start counting down a preselected time period. At the end of the time period, the solenoid deactivates to unlock the door. In the preferred embodiment, the keeper comprises a ball while the actuator comprises a larger ball. The bolt for all embodiments defines a seat that receives the keeper.

Abstract: An alarm lock for securely locking both edges of an emergency exit door. A rigid, hollow housing mounts upon an existing door between opposing door facings. A pair of rigid, elongated rods is longitudinally displaceable within the housing between a locked position and an unlocked position. The rods are driven by a coupler confined within the housing and coupled to a rotatable crank controlled by a paddle arm handle assembly. The crank is journaled for rotation about a rigid axle which projects through the housing interior. Movement of the handle rotates the crank, selectively extending and retracting the rods into and out of engagement with the door casings. A panel mounted on the paddle arm clearly displays instructions for emergency use. When the handle is activated, a rigid follower associated with one of the rods forcibly contacts an alarm switch to activate an audible transducer. The alarm may be manually disarmed and reset by manipulation of a key switch.