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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 8975989 B1

PDFFull Text
Date of Patent:
Mar. 10, 2015

Filed:

Mar. 14, 2011

Contact switching device

Applicants:

Keisuke Yano, Kikuchi, JP;

Ryuichi Hashimoto, Yamaga, JP;

Yasuo Hayashida, Kumamoto, JP;

Shingo Mori, Yamaga, JP;

Inventors:

Keisuke Yano, Kikuchi, JP;

Ryuichi Hashimoto, Yamaga, JP;

Yasuo Hayashida, Kumamoto, JP;

Shingo Mori, Yamaga, JP;

Assignee:

OMRON Corporation, Kyoto, JP;

Attorney:

Blakely Sokoloff Taylor & Zafman

Primary Examiner:

Mohamad Musleh

Int. Cl.
CPC ...
H01H 67/02 (2006.01); H01H 1/36 (2006.01); H01H 1/66 (2006.01); H01H 50/40 (2006.01); H01H 50/60 (2006.01); H01H 51/06 (2006.01); H01H 51/00 (2006.01); H01H 50/30 (2006.01); H01H 50/54 (2006.01); H01H 50/04 (2006.01); H01H 50/00 (2006.01); H01H 50/02 (2006.01); H01H 9/44 (2006.01); H01H 50/44 (2006.01);
U.S. Cl.
CPC ...
H01H 1/36 (2013.01); H01H 1/66 (2013.01); H01H 50/40 (2013.01); H01H 50/60 (2013.01); H01H 51/06 (2013.01); H01H 51/00 (2013.01); H01H 50/30 (2013.01); H01H 50/54 (2013.01); H01H 50/045 (2013.01); H01H 50/00 (2013.01); H01H 50/02 (2013.01); H01H 9/443 (2013.01); H01H 50/443 (2013.01);
Abstract

An object of the present invention is to provide a contact switching device having a smaller height dimension. For this, there is provided a contact switching device in which a movable iron core () provided at one end portion of a movable shaft () is attracted to a fixed iron core (), based on excitation and degauss of an electromagnet portion, by which the movable shaft () reciprocates in a shaft center direction, and a movable contact () of a movable contact piece () arranged at another end portion of the movable shaft () contacts and departs from a fixed contact (). Two coil springs () different in length and diameter are put on the movable shaft (), and one of the coil springs () is arranged inside the other coil spring ().

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