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. 23, 1990
Filed:
Apr. 27, 1989
Applicant:
Inventor:
Armin Eisermann, Velbert, DE;
Assignee:
Schulte-Schlagbaum Aktiengesellschaft, Velbert, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G07F / ;
U.S. Cl.
CPC ...
194253 ; 70369 ;
Abstract
A locking device consisting of a lock and a key-actuated lock cylinder, in which the lock cylinder can be removed from the bolt lock only by the use of a key. In order to make it possible for any removal of the lock cylinder to be noted, the invention discloses a separate removal key and a catch which drops upon the removal and prevents re-insertion of the lock cylinder.