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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 9178339 B1

PDFFull Text
Date of Patent:
Nov. 03, 2015

Filed:

Aug. 15, 2014

Buffering device for the operating mechanism of a switchgear, and method of lubrication thereof

Applicant:

Kabushiki Kaisha Toshiba, Minato-ku, JP;

Inventors:

Yoshiaki Ohda, Kanagawa-ken, JP;

Yoshikata Kobayashi, Tokyo, JP;

Masaharu Shimizu, Kanagawa-ken, JP;

Satoshi Marushima, Kanagawa-ken, JP;

Hirokazu Takagi, Kanagawa-ken, JP;

Tooru Inoue, Kanagawa-ken, JP;

Assignee:

KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Christopher Schwartz

Int. Cl.
CPC ...
H01H 33/30 (2006.01); H02B 13/035 (2006.01); F16F 13/00 (2006.01); F16N 13/00 (2006.01); F16F 9/43 (2006.01); H01H 3/60 (2006.01);
U.S. Cl.
CPC ...
H02B 13/0354 (2013.01); F16F 9/432 (2013.01); F16F 13/007 (2013.01); F16N 13/00 (2013.01); H01H 33/304 (2013.01); F16F 2230/06 (2013.01); H01H 3/605 (2013.01);
Abstract

A piston rod () and a first piston () are arranged in the interior of an external cylinder () and internal cylinder (); a second piston for absorbing the change of volume of operating fluid () is also arranged therein. Also, a first return spring () for returning the piston rod () to the interruption position is provided and a second return spring () for returning the operating fluidinto the high-pressure chamber () by pressurizing the second piston () is provided. In addition, the air in the interior of the buffering device () is withdrawn by a vacuum pump (), and operating fluid () is thus introduced in a degassed condition.

Find Patent Forward Citations

Ohda, Yoshiaki. (2015). Buffering device for the operating mechanism of a switchgear, and method of lubrication thereof (U.S. Patent No. 9178339). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9178339

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

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