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:
Nov. 12, 2002
Filed:
Oct. 19, 2001
Applicant:
Inventors:
Peter H. Field, Salem, VA (US);
Andy E. Perkins, Lafayette, VA (US);
Assignee:
Medeco Security Locks, Inc., Salem, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05B 2/704 ; E05B 2/708 ;
U.S. Cl.
CPC ...
E05B 2/704 ; E05B 2/708 ;
Abstract
A twisting tumbler lock with a side bar is provided with additional levels of security by a axially reciprocable slider which is normally positioned to block operation of the side bar but is moved by a specially configured key to free operation of the side bar. This provides a third level of locking security, it also allows master keying. The unique key has a portion of a rib formed to cooperate with the slider to further allow key control.