Locks – Special application – For closures
Patent
1974-08-15
1976-05-04
Gilliam, Paul R.
Locks
Special application
For closures
70279, 70282, 70465, 292159, 292170, 292333, 292DIG65, E05B 4704, E05B 6312, E05B 6320, E05C 106
Patent
active
039539911
ABSTRACT:
A radio-operated lock construction is adapted to be mounted on a door and is positioned to engage a mating piece mounted on the adjacent door jamb to lock the door in the closed position. The lock comprises a lock housing having means for mounting the housing on the door. A drop bolt is movably mounted on the housing for movement between an extended position wherein the bolt engages with the mating piece and a retracted position wherein the bolt and mating piece are disengaged. The drop bolt comprises an operating member which is movable from a first position corresponding to the extended position of the bolt to a second position corresponding to the retracted position of the bolt. An opening slide is connected with the operating member and is movable upon actuation from a first to a second position to move the operate member from the first to the second position thereby retracting the drop bolt. A retainer in the form of a reciprocating plate is responsive to the movement of the opening slide to the second position to retain the operating member in its second position. Actuating means is connected to the opening slide for actuating the opening slide.
The actuating device comprises a receiver responsive to the reception of a preselected signal for operating the opening slide whereby external openings on the face or front of the door for a key or the like are eliminated.
REFERENCES:
patent: 1736761 (1929-11-01), Haffner
patent: 1998246 (1935-04-01), Ledin et al.
patent: 2105350 (1938-01-01), FitzGerald
patent: 2241872 (1941-05-01), Van Note
patent: 2541461 (1951-02-01), Churchill
patent: 3168737 (1965-02-01), Weinstein
patent: 3392559 (1968-07-01), Hedin et al.
patent: 3725939 (1973-04-01), Saltzstein
patent: 3772574 (1973-11-01), Hughes
patent: 3828592 (1974-08-01), Horgan
Daskal Elliot
Gilliam Paul R.
Grossman Paul
Pietruszka Carl F.
Siliato Vincent G.
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