David L Rice

US Patent:

20040055222, Mar 25, 2004

Filed:

Jul 24, 2003

Appl. No.:

10/627112

Inventors:

David Rice - Livonia MI, US
Matthew Larowe - Southgate MI, US
Malcolm McAdam - Dearborn MI, US

International Classification:

E05F001/00

US Classification:

049/449000

Abstract:

A door latch is provided for vertical sliding doors of the type used in warehouses and loading bays. The latch includes a housing, a latch bolt supported on the housing for sliding movement between a latched position and an unlatched position, and an actuator arm supported on the housing for moving the latch bolt between the latched and unlatched positions. A linkage interconnects the actuator arm and the latch bolt to transmit movement between the actuator arm and the latch bolt, with the linkage including a first end pivotally connected to an end of the latch bolt and a second end pivotally connected to and end of the actuator arm. A pivot pin supported on the housing extends through the actuator arm at a point spaced away from the linkage whereby the actuator arm will move the latch bolt to the unlatched position with movement of the handle end of the actuator arm in either a clockwise or counterclockwise direction about the pivot pin.