Axial wafer tumbler lock and key

Details Axial wafer tumbler lock and key Axial wafer tumbler lock and key

1988-03-10

1989-01-03

Wolfe, Robert L.

Locks

Operating mechanism

Key

70377, E05B 2708

Patent

active

047947721

ABSTRACT:
An improved tubular axial wafer tumbler lock that can be fully automatically manufactured and assembled along with a cast combinated key at very low cost without machining operations is made up of three basic components including a shell, spindle plug and rear cap wherein generally T-shaped wafer tumblers are held in open notches in the spindle plug by springs and a multi-purpose cam stop washer at the forward end retains the tumblers in the plug during assembly and after assembly conceals the outside readability of the tumbler lock-up combinations as well as defining the rotational limits of travel of the sprindle plug. A lockup of the lock is accomplished with forward and rearward notches tha co-act with radial blade portions of the tumblers and the notches are disposed at 15.degree. increments which thereby provide 24 of such notches to permit a large variety of different key pulls. The low cost, mass producible lock construction lends itself to numerous specialty applications where the internal components can be incorporated into different shells loaded from the rear as well as from the front with a fixed head or a removable bezel and thereby even enable the combination of a cam lock and switch lock.

REFERENCES:
patent: 1375521 (1921-04-01), Lasky
patent: 1384392 (1921-07-01), Laski
patent: 2493630 (1950-01-01), Julliard
patent: 2557028 (1951-06-01), Deutsch
patent: 3237476 (1966-03-01), Williams
patent: 3408840 (1968-11-01), Hasenbein
patent: 3605461 (1971-09-01), Frank
patent: 3661001 (1972-05-01), Glass

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