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:
Dec. 17, 2002
Filed:
Aug. 09, 2000
Applicant:
Inventors:
Hirofumi Okumura, Tokyo, JP;
Ichirou Tokunaga, Tokyo, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/14 ; G01B 7/30 ; G01B 5/12 ; G01B 1/502 ;
U.S. Cl.
CPC ...
G01B 7/14 ; G01B 7/30 ; G01B 5/12 ; G01B 1/502 ;
Abstract
A magnet is provided on a detection member that moves on a straight line. A Hall element serving as a magneto-electric element is provided on a fixed member that opposes the magnet. A surface of the magnet that opposes the Hall element is formed into a radius or trapezoidal shape. With this arrangement, linear outputs can be obtained at any rotational angles even when a rotator rotates a plurality of times.