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:
Feb. 23, 2016

Filed:

Aug. 14, 2013
Applicant:

Denso Corporation, Kariya, Aichi-pref., JP;

Inventors:

Hitomi Honda, Kariya, JP;

Akitoshi Mizutani, Okazaki, JP;

Yoshiyuki Kono, Obu, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/30 (2006.01); G01D 5/14 (2006.01);
U.S. Cl.
CPC ...
G01D 5/14 (2013.01); G01D 5/145 (2013.01);
Abstract

A rotation angle detection device has a first yoke, an inside surface of which is formed of a first concave curved surface and a second concave curved surface, and a second yoke, an inside surface of which is formed of a third concave curved surface and a fourth concave curved surface. Each concave curved surface does not extend in a second direction but extends toward a first flat surface or a second flat surface in an inclined manner. The first flat surface and the second flat surface face each other sandwiching a Hall element therebetween and are parallel to each other. The magnetic flux, which leaks from the first yoke into an inside space and reaches the second yoke, flows in the second direction over a wider area around the Hall element.


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