Locks – Operating mechanism – Combination
Patent
1992-04-13
1993-11-02
Cuomo, Peter M.
Locks
Operating mechanism
Combination
70443, 70444, 70467, 70150, 70326, E05B 3705
Patent
active
052575195
ABSTRACT:
A dead bolt assembly for use with a combination dial lock assembly includes a housing structure adapted to receive a combination dial lock assembly. The housing structure includes a bolt hold back assembly which prevents extension of a dead bolt into a door strike. The bolt hold back assembly is operable from the inside of the door preventing manipulation of the combination dial on the outside of the door. Arranging the bolt hold back assembly in the housing permits ease of replacement and/or repair of standard or off the shelf type combination locks with the dead bolt assembly. The dead bolt assembly also includes a spring loaded pin arrangement which avoids a lockout situation. The housing structure includes a slot in the back plate which facilitates installation and/or removal of a combination dial lock assembly by permitting the lock shaft to slide into the housing structure without requiring removal of the combination dial or lock casing.
REFERENCES:
patent: 907038 (1908-12-01), Greene
patent: 929712 (1909-08-01), Runkle
patent: 1040764 (1912-10-01), Rose
patent: 1508029 (1924-09-01), Segal
patent: 1510562 (1924-10-01), Segal
patent: 3991596 (1976-11-01), Gartner
patent: 4275576 (1981-06-01), Miller
Sargent & Greenleaf Catalog, published Jun., 1989, pp. 5 and 2.5-2.8.
Boucher Darnell M.
Cuomo Peter M.
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