The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 1989
Filed:
Mar. 10, 1988
Sidney Falk, River Grove, IL (US);
James M Alex, River Grove, IL (US);
K.X.L. Manufacturing, Inc., River Grove, IL (US);
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.