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:
Jun. 02, 2009
Filed:
Nov. 12, 2004
Shoji Ito, Tokyo, JP;
Junya Kawabata, Tokyo, JP;
Shoji Ito, Tokyo, JP;
Junya Kawabata, Tokyo, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A seal mechanism () can reduce noise during operation. The seal mechanism () is used for a fluid machine (P) to prevent a fluid from leaking out of a high-pressure space (H) into a low-pressure space (L) in the fluid machine (P). The seal mechanism () has an annular seal member () movable in a radial direction and a housing () disposed between a body () of the fluid machine (P) and a rotatable member () located inside the body () of the fluid machine (P) so as to receive the annular seal member (). The annular seal member () has a first surface () on a side of the low-pressure space (L) in the fluid machine (P). The housing () has a second surface () facing the first surface () of the annular seal member (). The seal mechanism () has one or more passages () formed in the first surface () and/or the second surface ().