Latch assembly for doors

Details Latch assembly for doors Latch assembly for doors

1990-08-24

1992-03-03

Nicholson, Eric K.

Closure fasteners

Bolts

Sliding

292333, 292150, 292DIG72, E05C 116

Patent

active

050926373

ABSTRACT:
A latch assembly for a door movably mounted on a frame is disclosed together with its method of operation, the assembly including a housing mounted on the frame adjacent an opening for receiving the door, a first pin mounted in a first passageway of the housing with a spring biasing the first pin into extended locking engagement with the door, a second pin being mounted in a second passageway intersecting with the first passageway, a spring biasing the second pin into extension for opening the door from the frame, retainers being interconnected with the first and second pins for securing each pin in a retracted position when the other pin is extended so that the first pin positively locks the door in a closed position retracting the second pin and the second pin positively opens the door when the first pin is retracted by the actuator.

REFERENCES:
patent: 45963 (1865-01-01), Andrews
patent: 390507 (1888-10-01), Morton
patent: 1355735 (1920-10-01), Crompton et al.
patent: 1768021 (1930-06-01), Bauerband
patent: 3605459 (1971-09-01), Van Dalen
patent: 3736778 (1973-06-01), Bako
patent: 3843174 (1974-10-01), Bogunovich et al.
patent: 3890814 (1975-06-01), Fantoni
patent: 4049304 (1977-09-01), Imhoff
patent: 4132439 (1979-01-01), Millar

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