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. 01, 2008
Filed:
Feb. 02, 2007
Charles W. Eden, Jr., Lewisville, NC (US);
Charles W. Eden, Jr., Lewisville, NC (US);
Kaba Ilco Corp., Winston-Salem, NC (US);
Abstract
A key blank for a cylinder lock comprising a bow, a blade longitudinally extending from the bow to a tip, and having a longitudinally extending upper edgeto be cut with coded bitting for mating with a tumbler stack of a cylinder lock. A projectionextends outwardly on the upper edge adjacent the bow, rising from longitudinally extending surfacesat elevation ebelow the elevation eof the upper edge, and having a length parallel to the upper edge that is greater than a width transverse to the edge. The projection is interposed between a front edge portionto be cut with the coded bitting and a back edge portionextending to the bow at elevation eabove elevation e. The projection has cam surfaces converging longitudinally and transversely toward a noseat elevation eabove elevation e. The back edgehas a notchforming an arcuate shoulder spaced from the upper projection at an elevation eabove elevation e, to support the rim of an auxiliary pin while the projection is within a recess on the underside of the pin.