Locks – Operating mechanism – Key
Patent
1983-10-19
1986-11-25
Wolfe, Robert L.
Locks
Operating mechanism
Key
70360, 70377, E05B 2902
Patent
active
046241191
ABSTRACT:
A cylinder lock having a plurality of plate-like tumblers, each of which is carried by the lock barrel to rotate therewith and each being adapted to locate within a respective locking recess provided in the lock body and thereby hold the barrel against rotation relative to the body. The tumbler plates are movable laterally relative to the barrel axis so as to be capable of removal from their respective locking recesses and thereby free the barrel for rotation. A locking pin interconnects the tumbler plates so that they move in unison between their barrel locking and release positions, and a plurality of rotatable discs interacts with that pin to control its ability to move radially inwards and thereby free the tumbler plates from their locking recesses. Each disc has a peripheral notch which must be located adjacent the locking pin to allow the aforementioned radial inward movement.
REFERENCES:
patent: 688070 (1901-12-01), Denn
patent: 1616255 (1927-02-01), Douglas
patent: 1979095 (1934-10-01), Braunig
patent: 2061456 (1936-11-01), Falk
patent: 2648972 (1953-08-01), Diesel
patent: 3623345 (1971-11-01), Solitanner
patent: 3709006 (1973-01-01), Seidewand
patent: 4083212 (1978-04-01), Proefrock
patent: 4272975 (1981-06-01), Patriquin
patent: 4317347 (1982-03-01), Martikainen
patent: 4789638 (1974-02-01), Roberts et al.
Robinson, R. L., "Complete Course in Professional Locksmithing", Chapter 13, pp. 126 to 140 (The Disc Tumbler Lock Mechanism).
Dunphy Gerald F.
Newman Donald J.
Illich Russell W.
Ogden Industries Pty. Ltd.
Wolfe Robert L.
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