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:
May. 26, 2026
Filed:
Aug. 04, 2022
Applicant:
Kosmek Ltd., Kobe, JP;
Inventor:
Akira Arisato, Kobe, JP;
Assignee:
KOSMEK LTD., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 37/32 (2006.01); F16L 29/04 (2006.01);
U.S. Cl.
CPC ...
F16L 37/32 (2013.01); F16L 29/04 (2013.01);
Abstract
Provided is a compact coupling device. This coupling device has a first joint and a second joint. In the second joint, a sub valve chamber and a main valve chamber are formed so as to be continuous in the vertical direction. A sub valve member is inserted into the sub valve chamber so as to be movable in the vertical direction in a sealed manner. The sub valve member is urged downward by a second valve-closing spring against a sub valve seat formed inside the sub valve chamber. A communication path is formed in the sub valve member. The communication path forms a part of a flow passage that causes the sub valve chamber and the main valve chamber to communicate.