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:
Feb. 28, 2017
Filed:
May. 18, 2012
Yoshiaki Takigahira, Tokyo, JP;
Yoji Oshii, Tokyo, JP;
Atsushi Kaneko, Tokyo, JP;
Tetsuya Sato, Tokyo, JP;
Yoshiaki Takigahira, Tokyo, JP;
Yoji Oshii, Tokyo, JP;
Atsushi Kaneko, Tokyo, JP;
Tetsuya Sato, Tokyo, JP;
EAGLE BURGMANN JAPAN CO., LTD., Tokyo, JP;
EAGLE INDUSTRY CO., LTD., Tokyo, JP;
Abstract
A pumping ringproducing an axial flow of sealed flow is secured to a rotary shaftat an axial position different from a rotary ringso that the sealed fluid positioned in the sealed spaceflows along the axial direction of the rotary shaft. A discharge holeis formed on an inner circumferential surface of a seal coverpositioned in the downstream side of the axial flow of the sealed fluid resulting from a rotation of the pumping ring. An inflow holeis formed in the upstream side of the axial flow of the sealed fluid resulting from the rotation of the pumping ring, so that the sealed fluid discharged from the discharge holereturns to the inside of the sealed space from the inflow hole. On the inner circumferential surface of the seal coverprovided with the discharge hole, a baffle memberis provided so that it protrudes radially inward in order to block the flow of the sealed fluid along the rotating direction of a retainerand orient the sealed fluid toward the discharge hole