Security lock and seal for double door or window installations

Details Security lock and seal for double door or window installations Security lock and seal for double door or window installations

1988-09-08

1990-01-09

Brittain, James R.

Movable or removable closures

Facially opposed primary and auxiliary closure for common...

Auxiliary mounted for movement

292 59, 2923363, 292347, 292358, E05B 6504

Patent

active

048919071

ABSTRACT:
The present device secures two doors or panels together from the inside, either separately from or integral with a lock assembly for the outer door. A moveable element is provided on the inner surface of the outer door selectively engageable by a rotatable link on the inner door which may be engaged with the outer door element when both doors are closed.

REFERENCES:
patent: 525906 (1894-09-01), Johnson
patent: 1102519 (1914-07-01), Lande
patent: 1382758 (1921-06-01), Brown
patent: 1480686 (1924-01-01), Light
patent: 1622791 (1927-03-01), Lang
patent: 1639661 (1927-07-01), Newcomb
patent: 1664820 (1928-04-01), Hughes
patent: 1842724 (1932-01-01), Langsner
patent: 2018346 (1935-10-01), Busby
patent: 2537896 (1951-09-01), Hinton et al.
patent: 4302907 (1981-12-01), Canals et al.
patent: 4660873 (1987-04-01), Sholund
patent: 4688835 (1987-08-01), Wu

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