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:
Oct. 22, 2024

Filed:

Feb. 04, 2021
Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventor:

Kazuhiko Tomita, Tokyo, JP;

Assignee:

Proterial, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/14 (2006.01);
U.S. Cl.
CPC ...
G01D 5/145 (2013.01);
Abstract

A rotation detection device includes a sensor unit including a magnetic sensor and a housing portion covering the magnetic sensor. The magnetic sensor includes a plate-shaped detection portion including a magnetic detection element to detect a magnetic field from the detection target member and connection terminals extending out of the detection portion. The magnetic detection element includes a magnetoresistive effect element to detect a magnetic field in a direction perpendicular to a plate thickness direction of the detection portion. The sensor unit is positioned such that a fore-end portion of the detection portion of the magnetic sensor faces toward an axial end face of the detection target member, the fore-end portion being an end portion located opposite to the side where the connection terminals extend out.


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