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:
Aug. 29, 2023
Filed:
Sep. 07, 2017
Eagle Industry Co., Ltd., Tokyo, JP;
Hikaru Katori, Tokyo, JP;
Keiichi Chiba, Tokyo, JP;
Masatoshi Itadani, Tokyo, JP;
Tadahiro Kimura, Tokyo, JP;
Akira Yoshino, Tokyo, JP;
Abstract
Two conflicting functions of sealing and lubrication of sliding faces are achieved for a long time. The sliding face of a rotating-side seal ringis provided with dynamic pressure generation groovesconfigured to communicate with the circumferential edge on the inner peripheral side of the sliding face and not to communicate with the circumferential edge on the outer peripheral side. A springis provided on the back side of a stationary-side seal ringfor pressing the stationary-side seal ringagainst the sliding face of the rotating-side seal ring. A spring holderis provided between the back side of the stationary-side seal ringand the spring