Drop-bolt door lock assembly

Details Drop-bolt door lock assembly Drop-bolt door lock assembly

1986-06-06

1987-08-25

Wolfe, Robert L.

Locks

Operating mechanism

Key

70451, 70452, E05B 908, E05B 6300

Patent

active

046884092

ABSTRACT:
A high security drop-bolt lock assembly for a door includes a cylinder lock carried by a guard plate positionable on the outside of the door with the cylinder lock within the door, and a drop-bolt assembly on the inside of the door. The drop-bolt assembly is connected to protected studs extending from the guard plate to make a strong unitary construction extremely difficult to defeat and protecting the cylinder lock behind the guard plate and within the door.

REFERENCES:
patent: 1065848 (1913-06-01), Segal
patent: 1922043 (1933-08-01), Hines
patent: 3095727 (1963-07-01), Kerr
patent: 3545799 (1970-12-01), Gertsfeld
patent: 3582119 (1971-06-01), Woodworth
patent: 3698217 (1972-10-01), Roy
patent: 3768284 (1973-10-01), Kent et al.
patent: 3981168 (1976-09-01), Coralli et al.
patent: 4296619 (1981-10-01), Widen
patent: 4316371 (1982-02-01), Del Nero
patent: 4466264 (1984-08-01), Del Nero
patent: 4484463 (1984-11-01), Hennessey
patent: 4522048 (1985-06-01), Davis
patent: 4530223 (1985-07-01), Oliver
New England Lock & Hardware Co.--Advertisement.
R. Wasson, Locksmith Ledger, Jun. 1983, pp. 17-19.
Locksmith Ledger, Jul. 1983, p. 19--Advertisement.

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