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.:
Date of Patent:
Nov. 19, 2013
Filed:
Nov. 18, 2008
Yoji Oshii, Tokyo, JP;
Koji Akiyama, Tokyo, JP;
Joji Watanabe, Tokyo, JP;
Atsushi Kaneko, Tokyo, JP;
Yoji Oshii, Tokyo, JP;
Koji Akiyama, Tokyo, JP;
Joji Watanabe, Tokyo, JP;
Atsushi Kaneko, Tokyo, JP;
Eagle Industry Co., Ltd., Tokyo, JP;
Abstract
A mechanical seal device for obtaining appropriate sliding properties under any conditions, such as a pressure of seal is low or high. Both first groovesand second groovesare formed on a sliding faceof a stationary ring. The first grooves which are not in communication externally and act for reducing contact resistance of a sliding face by a dynamic pressure action when a rotary shaft rotates, the second grooves act for reducing the contact resistance of the sliding face constantly by introducing a pressure from external. Thus, a mechanical seal device which is available to seal sealed fluid under an appropriate dry contact status wherein a sliding face load is reduced in any condition can be provided.