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:
Sep. 29, 2015
Filed:
Jun. 13, 2011
Applicants:
Koichi Yuhara, Osaka, JP;
Izuru Shikata, Osaka, JP;
Inventors:
Koichi Yuhara, Osaka, JP;
Izuru Shikata, Osaka, JP;
Assignee:
FUJIKIN INCORPORATED, Osaka-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 17/00 (2006.01); F16L 15/04 (2006.01); F16L 19/02 (2006.01); F16L 19/025 (2006.01);
U.S. Cl.
CPC ...
F16L 15/04 (2013.01); F16L 19/025 (2013.01); F16L 19/0218 (2013.01); F16L 2201/10 (2013.01);
Abstract
A fluid coupling reliably finding absence of the gasket, if exists, in the leak test is provided. Butted end surfaces of coupling members have annular sealing protrusions and anti-overfastening annular protrusions protruded further than the annular sealing protrusions, respectively. At least one of the anti-overfastening annular protrusions has a communication path communicating internal space with external space when both the anti-overfastening annular protrusions butt against each other.