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. 13, 2019
Filed:
Dec. 15, 2015
Kabushiki Kaisha Riken, Tokyo, JP;
Namsun Park, Kashiwazaki, JP;
Yoshiyuki Sato, Kashiwazaki, JP;
KABUSHIKI KAISHA RIKEN, Tokyo, JP;
Abstract
[Object] To provide a seal ring that realizes excellent sealability irrespective of magnitude of hydraulic pressure. [Solving Means] A seal ring includes an outer surface and side surfaces formed symmetrically about a plane perpendicular to a central axis. The outer surface includes a peak portion, first tapered surfaces, and second tapered surfaces. The peak portion is provided along the plane. A diameter of each of the first tapered surfaces is reduced with increased distance from the peak portion, each of the first tapered surfaces forming a first angle with respect to the central axis. Each of the second tapered surfaces is closer to each of the side surfaces than each of the first tapered surfaces is, a diameter of each of the second tapered surfaces being reduced with increased distance from each of the first tapered surfaces, each of the second tapered surfaces forming a second angle with respect to the central axis, the second angle being larger than the first angle.