Abstract: A door lock has a housing adapted to be mounted on an edge of the door, inside and outside nuts rotatable about respective inside and outside axes on the housing, and respective inside and outside handles fixed to the nuts and respectively projecting inward and outward from the door with each handle movable upward and downward from a central position. A pair of bolts in the housing each movable between an outer position and an inner position are coupled to respective slides and movable jointly therewith between a position extended from the door in the outer position of the respective slide and a position recessed in the door in an inner position of the respective slide. An actuating arm on the inside nut can engage stops on one of the slide and a gear train meshes on one side with the outside nut and on the other side with both of the slides for opposite movement of the two slides on rotation of the outside nut.

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 lock assembly has a main lock housing, a bolt movable in the housing between a locked position projecting from the housing and an unlocked position largely recessed in the housing, a key-operable mechanism having an actuator movable by turning of an appropriately bitted key in the mechanism, and a linkage between the actuator and the bolt for displacing the bolt by means of the actuator. A secondary housing is provided adjacent the lock housing and an actuator element coupled and movable with the linkage extends from the lock housing to the secondary housing. The element moves in one direction relative to the secondary housing on movement of the bolt from the locked to the unlocked position and in the opposite direction on movement of the bolt from the unlocked to the locked position. An electric motor on the secondary housing connected to the element is energizable for displacing same in both directions and thereby also displacing the bolt between its positions.

Abstract: A latch has a housing, a main bolt displaceable in the housing between a fully extended position projecting fully from the housing and a retracted position generally withdrawn into the housing, and a spring engaged between the main bolt and the housing for urging the main bolt with a predetermined spring force into the fully extended position. At least one secondary bolt is similarly displaceable relative to the housing between an extended and a retracted position. A lockout mechanism in the housing connected between the main bolt and the secondary bolt prevents the secondary bolt from being displaced from its withdrawn into its extended position except when the main bolt is in its fully extended position. The bolt is engageable in a keeper provided with a spring-loaded flap that inhibits the bolt from extending thereinto into its fully extended position and that normally retains it in an intermediate position.