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. 13, 2017
Filed:
Dec. 05, 2014
Applicant:
Eagle Industry Co., Ltd., Tokyo, JP;
Inventors:
Masatoshi Itadani, Tokyo, JP;
Kazumasa Sunagawa, Tokyo, JP;
Assignee:
EAGLE INDUSTRY CO., LTD., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 15/34 (2006.01); F16C 33/72 (2006.01); F16C 33/74 (2006.01);
U.S. Cl.
CPC ...
F16J 15/3412 (2013.01); F16C 33/72 (2013.01); F16C 33/743 (2013.01); F16J 15/34 (2013.01);
Abstract
Sliding parts of a pair of annular bodies include sealing faces that relatively slide on each other. A reversed Rayleigh step mechanism serving as a negative pressure generation mechanism is provided in at least one of the sealing faces, and a negative pressure generation groove that forms the reversed Rayleigh step mechanism is provided in an arc shape along the circumferential direction of the sealing face so as to be isolated from a high pressure fluid side and a low pressure fluid side by a land section.