Door latch with manually resettable deadbolt lock

Details Door latch with manually resettable deadbolt lock Door latch with manually resettable deadbolt lock

1998-08-11

2000-06-27

Dayoan, B.

Closure fasteners

Bolts

Swinging

292216, E05C 306

Patent

active

060797576

ABSTRACT:
A door latch has an outside latch operating lever for unlatching the door latch, a composite locking lever that has an unlocked position where the outside latch operating lever is operable and a locked position where the outside latch operating lever is disabled; an inside lock operating lever for moving locking lever back and forth between the locked and unlocked positions and an outside lock operating lever for moving the locking lever back and forth between the locked and unlocked position; and a deadbolt locking mechanism for disabling the inside lock operating lever. The composite locking lever has an inside locking lever and an outside locking lever that includes the composite locking lever. The outside locking lever is operated by the outside lock operating lever and has an unlocked position where the outside latch operating lever is disabled. The deadbolt locking mechanism also includes a drive member that has a drive position that couples the inside and outside locking members for concurrent movement so that the inside locking member can move the outside locking member along with it from the locked position to an unlocked position where the outside latch operating lever is operable and a lost motion position where the inside locking member cannot move the outside locking member with it from the locked position to the unlocked position. The drive member is moved back and forth between the drive position and the lost motion position by a link that can be overridden by a reset member that is controlled by the outside latch operating lever.

REFERENCES:
patent: 5192103 (1993-03-01), Fukomoto et al.
patent: 5277461 (1994-01-01), Dzurko
patent: 5474340 (1995-12-01), Brackmann et al.
patent: 5577583 (1996-11-01), O'Donnell
patent: 5583282 (1996-12-01), Ikeda
patent: 5584515 (1996-12-01), Silye
patent: 5715713 (1998-02-01), Aubry
patent: 5887466 (1999-03-01), Yoshizawa
patent: 5931034 (1999-08-01), Fisher

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