James M Alex

US Patent:

D2518120, May 8, 1979

Filed:

Nov 4, 1977

Appl. No.:

5/851722

Inventors:

James G. Alex - Park Ridge IL

International Classification:

D2101

US Classification:

D21 36

US Patent:

D2605384, Sep 1, 1981

Filed:

Jun 22, 1979

Appl. No.:

6/051044

Inventors:

James G. Alex - Park Ridge IL

Assignee:

J.G.A. Enterprises, Inc. - Chicago IL

International Classification:

D2101

US Classification:

D21 35

US Patent:

47947721, Jan 3, 1989

Filed:

Mar 10, 1988

Appl. No.:

7/166204

Inventors:

Sidney Falk - River Grove IL
James M. Alex - River Grove IL

Assignee:

K.X.L. Manufacturing, Inc. - River Grove IL

International Classification:

E05B 2708

US Classification:

70491

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.