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. 19, 1989
Filed:
May. 23, 1988
Applicant:
Inventors:
Walter J Aston, Dudley, GB;
Paul Garbett, Wolverhampton, GB;
Assignee:
Yale Security Products Limited, Willenhall, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E05B / ;
U.S. Cl.
CPC ...
70277 ; 70278 ; 70409 ;
Abstract
A key for an electronic lock is provided with a relief coding for reading by a mechanically actuated reading device. The key has a blade along a narrow edge face of which there are formed grooves (or pairs of notches) extending either perpendicularly to the length of the blade or inclined to the perpendicular in one sense or the other. A lock is described in which the grooves or notches are read by two separate reading elements and an electronic circuit determines the key coding by detecting whether the reading elements detect the grooves or notches at the same time or in one order or the other.