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:
Mar. 09, 1999
Filed:
Mar. 20, 1998
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
73862335 ; 73862333 ;
Abstract
A sensor head is configured by beam-welding a magnetostrictive sleeve made of a magnetostrictive material to an intermediate sleeve. The intermediate sleeve is longer than the magnetostrictive sleeve. The intermediate sleeve protrudes from both ends of the magnetostrictive sleeve by a length 'L'. For the sensor head, an annealing process is performed. The sensor head for which the annealing process is performed is installed to a shaft. At this time, the contact portion between both ends of the intermediate material and the shaft are beam-welded all around.