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.

Date of Patent:
Apr. 04, 1989

Filed:

Feb. 26, 1987
Applicant:
Inventors:

Toru Yagi, Saitama, JP;

Tsuneo Takahashi, Saitama, JP;

Masayuki Nishiguchi, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
7386236 ; 73DI / ;
Abstract

A torque sensor comprising a magnetic member whose magnetostrictive characteristics vary with the amount of torque applied thereto and coils for detecting magnetostrictive variation disposed opposite the magnetic member, and a method of manufacturing the same. The torque sensor is constituted as an independent unit separate from the shaft whose torque is to be measured. The independent unit consists of a cylindrical member having the magnetic member attached thereto and an enclosure member which is provided with the coils and is mounted so as to cover the cylindrical member and be rotatable about the same axis as the cylindrical member. The method of manufacturing the torque member comprises the steps of first copper plating and then solder plating a torque transmission member and a magnetic member destined to be attached to the outer circumference of the torque transmission member, and solder-bonding the torque transmission member and the magnetic member by heating them while uniform pressure is being applied to the entirety of the wrapped region.


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