Door latch assembly

Details Door latch assembly Door latch assembly

E - Fixed Constructions

05

C

E05C 1/08 (2006.01) E05B 13/00 (2006.01) E05C 1/16 (2006.01)

Patent

CA 2046829

ABSTRACT OF THE DISCLOSURE A door latch assembly (10) includes a latch bolt mechanism (60) having a bolt (62) movable between a door latching position and a door unlatching position. Assembly (10) further includes handle lever (16) and (36) at opposite ends of a square spindle 64. An adapter 68 is attached to spindle 64 and engages cam surfaces 158 and 160 of a slide 142 within mechanism (60) to facilitate movement of bolt 62 when either of the levers (16) or (36) are operated. A locking plate 44 is attached to spindle 64 for movement therewith and is formed with a peripheral notch 138. A locking dog 48 is selectively positionable within notch 138 to prevent rotation of spindle 64 and movement of bolt 62 when an attempt is made to operate either of the levers 16 or 36. A stop plate 230 is also mounted on spindle 64 for rotation therewith and is positioned to engage fixed stems 28 to preclude attempted movement of either of the levers 16 or 36 in an upward direction but permits downward movement thereof to facilitate movement of bolt 62. 4345US

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