Adams Rite Manufacturing Co.

William Chung-Sum Chow

Thomas James Wheeler

Door top latch and actuating apparatus, comprising in combination, a mounting bracket configured to attach to a door top, a latch located by the bracket to move up and down, relative to the door top, an actuator rod extending vertically below the latch, and operatively connected to the latch whereby door handle operated vertical movement of the rod moves the latch vertically, and a compression spring associated with the rod for urging the rod and latch upwardly into latching position, the spring accommodating downward movement of the rod and latch, to unlatch the door, and a motion adaptor operatively connected between the rod and latch.

Door top latching actuation

In a lock drive train, the combination includes a pivoted lock bolt to be carried by a door, a casing, a rotary cylinder operatively rotatable during door opening or closing, a rack driven endwise in response to cylinder rotation, a gear rotatable by the driven rack, a pivoted lock dog driven by the gear, a bolt release lever, pivotable by the gear, between angular positions in which it is retained by the lock dog, the angular positions corresponding to extended and retracted positions of the bolt.

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Rowland Heights, CA, United States of America

William Chung-Sum Chow