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:
Dec. 13, 2005
Filed:
May. 12, 2003
Applicant:
Ernst Keller, Richterswil, CH;
Inventor:
Ernst Keller, Richterswil, CH;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05B027/00 ;
U.S. Cl.
CPC ...
Abstract
The safety key has a shank () which is provided with a plurality of control surfaces () for properly positioning tumblers and has a front end and a rear end (). At a front end (), the rotor () of the associated locking cylinder () has at least one further control surface (), which interacts with a further control surface () arranged at the rear end () of the shank (). The safety key is backward compatible and is relatively difficult to copy.