Wafer type tumbler lock construction having individual side bar

Details Wafer type tumbler lock construction having individual side bar Wafer type tumbler lock construction having individual side bar

1975-11-21

1977-04-05

Wolfe, Robert L.

Locks

Operating mechanism

Key

70377, 70419, E05B 1514

Patent

active

040154580

ABSTRACT:
A wafer type tumbler lock construction in which the individual wafer tumblers have a serrated edge for engagement with side bar tumbler inhibiting means actuated when an attempt is made to pick the lock. The side bar means includes a plurality of T-shaped elements, the cross bar portion of which has a serrated edge of length equal to a major portion of the length of the serrated edge on the respective tumbler. The angle of the serrations is such that under normal lock operation, the side bar will be cammed out of engagement with the introduction into the lock cylinder of a correct key.

REFERENCES:
patent: 1965889 (1934-07-01), Fitzgerald
patent: 2139842 (1938-12-01), Miller
patent: 3722241 (1973-03-01), Sussina

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