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:
Oct. 21, 1980
Filed:
Jul. 03, 1978
Applicant:
Inventor:
Daniel R Bischoff, Grand Rapids, MI (US);
Assignee:
Kysor Industrial Corporation, Cadillac, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E05B / ; E05B / ; E05B / ;
U.S. Cl.
CPC ...
7037 / ; 70134 ; 70389 ; 70DI / ; 70DI / ;
Abstract
A double cylinder lock constructed with a single tailpiece driver and a clutch. The interior lock key can be extracted only when the lock bolt is retracted and not when the lock bolt is extended. The driver and clutch arrangement prevent either cylinder from becoming out of time, regardless of which cylinder is used to throw the bolt.