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:
Feb. 16, 1993
Filed:
Aug. 20, 1991
Applicant:
Inventors:
David C Janssen, Whitefish Bay, WI (US);
Larry R Grimmer, Sussex, WI (US);
Assignee:
Briggs & Stratton Corporation, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05B / ; E05B / ;
U.S. Cl.
CPC ...
70277 ; 70278 ; 70371 ; 70422 ; 70495 ; 200 4308 ;
Abstract
A cylindrical lock and key set with an electronic interlock circuit includes a self-destruct circuit portion which is intercepted, engaged and destructed by an intercept member when the cylinder is forcibly, axially removed from the lock sleeve. A second intercept member may engage the circuit and destruct it when the cylinder is forcibly rotated. Either or both of the intercept members may be located on the cylinder.