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:
Jul. 30, 1991
Filed:
Sep. 20, 1990
Applicant:
Inventor:
David R Ridgway, Tucson, AZ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05B / ;
U.S. Cl.
CPC ...
70211 ; 70416 ;
Abstract
Anti-rotation lock apparatus prevents the rotation of a deadbolt key or handle by holding the key or handle from the inside of a door. The apparatus includes a base element which fits over the key or lock handle and an extension which extends from the base element and which is braced against the doorknob or doorknob assembly to prevent rotation of the base element and of the key or handle on which the base element is disposed.