Sliding patio door dual point latch and lock

Details Sliding patio door dual point latch and lock Sliding patio door dual point latch and lock

1989-09-20

1990-11-27

Nicholson, Eric K.

Closure fasteners

Bolts

Multiple

29291646, 292216, E05C 912

Patent

active

049730916

ABSTRACT:
A latch mechanism for a patio door having a narrow rectangular frame surrounding a window and slidable in a casing so that a vertical frame side abuts the casing when the door is closed. A pair of vertically spaced keepers on the casing are engagable by a pair of spaced latches on the door frame. The latches are biased toward an open position, and are moved by the keepers to a latching position when the door is closed. Catches secure the latches in the latching position, and the door handles are operably connected to the catches by a pair of longitudinally movable tie bars and pivoting links. A locking cam gear is movable by a sliding rack actuator between an unlocked position clear of the tie bars and a locked position with a raised cam surface engaging the tie bars to prevent longitudinal movement of the tie bars.

REFERENCES:
patent: 1131247 (1915-03-01), Kiekert
patent: 3040555 (1962-06-01), Wartian
patent: 4273368 (1981-06-01), Tanaka
patent: 4362328 (1982-12-01), Tacheny et al.
patent: 4643005 (1987-02-01), Logas

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