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. 29, 2018
Filed:
Jul. 27, 2012
Haruhiro Osada, Tokyo, JP;
Hideyuki Inoue, Tokyo, JP;
Takeshi Hosoe, Tokyo, JP;
Daisuke Morimiya, Tokyo, JP;
Yuichiro Tokunaga, Tokyo, JP;
Yuta Negishi, Tokyo, JP;
Haruhiro Osada, Tokyo, JP;
Hideyuki Inoue, Tokyo, JP;
Takeshi Hosoe, Tokyo, JP;
Daisuke Morimiya, Tokyo, JP;
Yuichiro Tokunaga, Tokyo, JP;
Yuta Negishi, Tokyo, JP;
EAGLE INDUSTRY CO., LTD., , JP;
Abstract
A mechanical seal has a structure wherein a plurality of sealed-fluid-accommodating blocks separated in the circumferential direction are formed on either the sealing face of a fixed ring or the sealing face of a rotating ring so as to communicate with a sealed fluid accommodation space. Pumping parts for creating a pumping action due to the fixed ring and the rotating ring sliding while undergoing relative rotation are formed on a bottom part of the plurality of sealed-fluid-accommodating blocks. The pumping parts formed on the bottom parts of the plurality of sealed-fluid-accommodating blocks are provided with an intake pumping part which acts in a direction in which the sealed fluid is drawn in and a discharge pumping part which acts in a direction in which the sealed fluid is discharged.