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. 01, 1988
Filed:
Aug. 04, 1986
Applicant:
Inventor:
Charles A Walton, Los Gatos, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08G / ;
U.S. Cl.
CPC ...
340941 ; 340933 ; 340572 ; 3408253 ; 235380 ; 336129 ;
Abstract
An electrical proximity identification system which has lateral flux. The system has a reader section with a reader antenna which is comprised of a pair of coils. The coils are located in the same plane and are oriented such that when they are energized by radio frequency power, the flux lines travel between the coils in a direction parallel to, but above and below, said plane. The system also has an identifier section with an identifier antenna. The identifier antenna is positioned such that its axis is parallel to the plane and in line with the flux lines.