Abstract: The present invention comprises a simple deadbolt assembly for hinged doors. The deadbolt assembly includes a deadbolt slideably mounted between two side plates for movement between an extended position and a retracted position. A cam is rotatably mounted between the side plates and actuates movement of the deadbolt upon rotation of the cam. The cam is mounted through an elongated opening in the deadbolt and includes an actuating arm with a guide. The guide is positioned within a corresponding guide channel formed in the deadbolt. Upon rotation of the cam, the guide is rotated through the guide channel and the force of the cam guide is transferred to the deadbolt causing the deadbolt to move between its extended and retracted positions. Opposing leaf springs are mounted to the deadbolt, along the length of the elongated opening to engage the cam and prevent binding between the cam and deadbolt during actuation of the deadbolt.

Abstract: The present invention is a two piece plastic door latch for use with hinged doors. The invention is intended as a temporary replacement of a traditional doorknob system, and is specifically designed for use during construction of a building. A typical door includes a cutout for mounting the door knob assembly and a bore extending from the front edge of the door to the cutout, through which passes the door latch bolt. The invention consists of a tubular casing with a latch plate formed at one end and a latch bolt slidably mounted within a glide path formed within the casing. The casing is inserted into the bore and secured to the edge of a door by the latch plate. The latch bolt extends outwardly from the casing to engage a strike plate secured to the doorjamb. A rubber band secured to the casing engages the latch bolt to urge the latch bolt to its extended position, with the head of the latch bolt extending outward of the door edge.