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:
Sep. 20, 2005
Filed:
Oct. 01, 2002
Peter H. Field, Salem, VA (US);
Andy E. Perkins, Lafayette, VA (US);
Anthony Hicks, Roanoke, VA (US);
Mark Benzie, Roanoke, VA (US);
Glenn Hartman, Salem, VA (US);
Clyde Roberson, Salem, VA (US);
Thomas Duckwall, Roanoke, VA (US);
Kevin Lee, Salem, VA (US);
W. Daniel Boadwine, Salem, VA (US);
Peter H. Field, Salem, VA (US);
Andy E. Perkins, Lafayette, VA (US);
Anthony Hicks, Roanoke, VA (US);
Mark Benzie, Roanoke, VA (US);
Glenn Hartman, Salem, VA (US);
Clyde Roberson, Salem, VA (US);
Thomas Duckwall, Roanoke, VA (US);
Kevin Lee, Salem, VA (US);
W. Daniel Boadwine, Salem, VA (US);
Medeco Security Locks, Inc., Salem, VA (US);
Abstract
A key blank, key and master keying system for a twisting tumbler sidebar lock of the type where the sidebar is blocked or unblocked by a selectively positioned longitudinally extending slider, has a key blank with a slider contacting surface on a rib on the blank below the bitting area at one of a plurality of selected predetermined locations. A key with skew cut bittings can be cut on the blank and the blank can be configured with the slider contacting surface at different predetermined locations. The slider contact area on the rib of the key blank can be divided into two horizontal portions at different predetermined locations and the slider itself can have contact surfaces also positioned at different predetermined locations so that a number of different master keying variations are possible.