Self-latching, semi-automatic door lock and opener

Details Self-latching, semi-automatic door lock and opener Self-latching, semi-automatic door lock and opener

1980-10-23

1984-07-24

Wolfe, Robert L.

Locks

Special application

For closures

70160, 292 38, 292171, E05B 5514, E05B 6508, E05C 112

Patent

active

044611609

ABSTRACT:
A lock mechanism is disclosed for use with sliding, swinging or overhead doors. A receiver is affixed to the door frame and a bolt, linkage and handle are affixed to the door. The linkage allows the bolt to engage the receiver by sliding along the receiver until it becomes latched so that the door may be closed though the handle is locked. Pulling upon the unlocked handle retracts the bolt from the receiver and also causes the door to start opening.

REFERENCES:
patent: 866073 (1907-09-01), Saunders
patent: 1282787 (1918-10-01), Evans
patent: 1628473 (1927-05-01), Pokorney
patent: 1831117 (1931-11-01), Huston
patent: 2022718 (1935-12-01), Heins
patent: 2140621 (1938-12-01), Gerlach
patent: 2153916 (1939-04-01), Dunbar
patent: 2198952 (1940-04-01), Sitko
patent: 2548242 (1951-04-01), Rosenbarger
patent: 3027188 (1962-03-01), Eichstadt
patent: 3543441 (1970-12-01), LaPorte
patent: 3834747 (1974-09-01), Slovensky, Jr.
patent: 4094540 (1978-06-01), Roig

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