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:
May. 09, 2017
Filed:
Oct. 08, 2014
Eagle Industry Co., Ltd., Tokyo, JP;
Nobuo Nakahara, Tokyo, JP;
Yasuhiro Ikeda, Tokyo, JP;
EAGLE INDUSTRY CO., LTD., Tokyo, JP;
Abstract
A mechanical seal () includes a sleeve () fixed to a rotating shaft (), wherein the sleeve () has: a first annular portion () that has a step having an inner diameter and an outer diameter on a sealed fluid (F) side thereof that are larger than those of on an opposite side thereto, an inner peripheral surface of a small diameter portion () on the first annular portion () is fitted on the rotating shaft (), and a stationary ring () is disposed on the small diameter portion (), a rotating ring () is disposed between a large diameter portion () and an inner peripheral surface of the rotating ring () is sealed, S÷S≦1 is satisfied where Sis a sliding area between the stationary ring () and the rotating ring (), Sis a pressure receiving area where the stationary ring () receives a pressure effect of the rotating ring () due to a pressure of the sealed fluid (F).