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:
Apr. 08, 1986
Filed:
Nov. 07, 1983
Walter R Evans, Lancaster, KY (US);
Sargent & Greenleaf, Inc., Nicholasville, KY (US);
Abstract
A double changeable tumbler lever type key lock for safe deposit boxes and the like having a slidable bolt plate carrying a stack of fence members, and a stack of tumbler levers occupying positions in the locked condition to bar retraction of the fence members and bolt plate from locking position. The tumbler levers each have first and second lift edge portions and are movable responsive to a guard key and a renter's key engageable with the pair of lift edge portions of each tumbler lever to position the levers to permit retraction of the bolt to unlocking position. Mounting structure on the bolt plate supports the fence members of the stack for guided adjustment to positions corresponding to a predetermined range of key shapes and for selectively clamping the fence members in their adjusted position.