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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.:

US 4866379 B1

PDFFull Text
Date of Patent:
Sep. 12, 1989

Filed:

Oct. 22, 1987

Tilt sensor having central first bottom surface and second contiguous

Applicant:
Inventors:

Yoshimoto Odagawa, Chiba, JP;

Yasushi Yanagisawa, Chiba, JP;

Hiraku Imaizumi, Chiba, JP;

Teruo Mori, Chiba, JP;

Takashi Shioura, Chiba, JP;

Kazuhiro Okada, Chiba, JP;

Kiyoshi Yanagisawa, Chiba, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:

Burgess, Ryan & Wayne

Primary Examiner:

Reinhard J Eisenzopf

Assistant Examiner:

Warren S Edmonds

Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
324207 ; 324262 ; 33364 ;
Abstract

There is proposed a tilt sensor in which a permanent magnet having a surface coated with a magnetic field is housed in a hollow portion of a nonmagnetic case, and a magnetic sensing element is disposed outside a bottom portion of the case. When the case is tilted at an angle exceeding a predetermined angle, the permanent magnet is greatly moved and the magnetic sensing element detects the movement of the magnet. Furthermore, adverse influences due to magnetic attraction between the permanent magnet and the magnetic sensing element or a surface tension of the magnetic fluid are compensated.

Find Patent Forward Citations

Odagawa, Yoshimoto. (1989). Tilt sensor having central first bottom surface and second contiguous (U.S. Patent No. 4866379). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4866379

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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