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:
Jun. 13, 1989
Filed:
Dec. 09, 1987
Applicant:
Inventors:
Assignee:
Kayaba Kogyo Kabushiki-Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ; F01B / ; F01B / ;
U.S. Cl.
CPC ...
324208 ; 92 / ;
Abstract
A method for easy and accurate positioning of a magnetic sensor in a fluid-power cylinder facing a magnetic scale on the lateral surface of a piston rod, wherein the sensor is supported by a hole in the cylinder, a piece of friction-resistant, non-magnetic material attached to the sensor projects from its detection surface towards the piston rod, and the non-magnetic material is made to keep in touch with the lateral surface of the moving piston rod by a pressure-applying bias. The friction-resistant, non-magnetic material is either fitted to the magnetic detection surface, or is formed into a tubular shape and fitted to the outer circumference of the sensor.