Dead bolt lock operable by pressurized fluid

Details Dead bolt lock operable by pressurized fluid Dead bolt lock operable by pressurized fluid

1984-06-21

1987-03-03

Wolfe, Robert L.

Closure fasteners

Bolts

Sliding

70275, 70DIG48, 292252, 403322, 403325, E05C 108

Patent

active

046470891

ABSTRACT:
A bolt of a dead bolt lock is moveable between a locking position and an ocking position by application of a pressurized fluid. In both the locking and unlocking positions a plurality of locking balls are urged into locking engagement with a locking groove and are maintained in such locking engagement by a resiliently urged locking cam without the necessity for maintaining the pressurized fluid once the required condition is attained. Application of the pressurized fluid unlocks the bolt, displaces it to its alternate position and locks it in place.

REFERENCES:
patent: 1054126 (1913-02-01), Lindberg
patent: 1635144 (1927-07-01), Stevens
patent: 1935715 (1933-11-01), Hunt et al.
patent: 3617081 (1971-11-01), Drucker
patent: 3753316 (1973-08-01), Savarieau et al.
patent: 4082342 (1978-04-01), Ailshie et al.
patent: 4127966 (1978-12-01), Schmidt
patent: 4512597 (1985-04-01), Nabb et al.

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