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:
Apr. 16, 2002
Filed:
Aug. 02, 2000
Applicant:
Inventor:
Yasuo Nekado, Kanagawa, JP;
Assignee:
Sony Precision Technology Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 7/14 ;
U.S. Cl.
CPC ...
G01B 7/14 ;
Abstract
A position detecting apparatus including a magnetic scale and a magnetic sensor for detecting a magnetic field generated by the magnetic sensor. The magnetic field extending in a magnetism-sensing direction perpendicular to a first direction in which the magnetic sensor moves relative to the magnetic scale and a second direction in which the magnetic sensor is spaced from the magnetic scale. The positional relationship between the magnetic scale and the magnetic sensor is detected from the magnetic field detected by the magnetic sensor in the magnetism-sensing direction.