Multiple axial pin tumbler lock

Details Multiple axial pin tumbler lock Multiple axial pin tumbler lock

1976-11-15

1977-08-16

Wolfe, Robert L.

Locks

Operating mechanism

Key

70419, E05B 2708

Patent

active

040417395

ABSTRACT:
A linearly arranged tumbler type lock construction having secondary locking means brought into operation upon an attempt to pick the lock without a key. The tumblers include portions having annular grooves extending into the surfaces thereof at spaced intervals, selectively engageable with edges of apertures in a plate disposed between a movable cylinder element and a fixed cylinder element, whereby upon applying a torque to the movable cylinder element, the grooved portions of at least some of the tumbers engage the plate which is fixed against rotation thereby preventing further axial movement of the tumblers.

REFERENCES:
patent: 1619252 (1927-03-01), George
patent: 3045468 (1962-07-01), Welch
patent: 3163034 (1964-12-01), George
patent: 3783660 (1974-01-01), Gill
patent: 3903720 (1975-09-01), Scherbing

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