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:
Apr. 21, 2025
Filed:
Nov. 21, 2021
Nippon Pillar Packing Co., Ltd., Osaka, JP;
Toshihide Iida, Osaka, JP;
Kenji Onishi, Osaka, JP;
Hiroki Tanabe, Osaka, JP;
Yu Notoji, Osaka, JP;
Shohei Minamihara, Osaka, JP;
NIPPON PILLAR PACKING CO., LTD., Osaka, JP;
Abstract
A fitting body is tubular, whose first and second axial end portions include a connector for a tube and an annular groove, respectively. A sleeve has first and second axial end portions including an annular protrusion and a connector for another tube, respectively. A nut is engaged with an external thread of the fitting body or the sleeve. Engagement of the external thread with the nut causes press-fit of the annular protrusion into the annular groove to form a seal region. Under a condition that a depth of the annular groove is three or more times as large as a thickness of a radially inward or outward wall of the annular groove, an axial distance from the seal region to a bottom of the annular groove exceeds ten times an increment width of the annular groove caused by the press-fit of the annular protrusion into the annular groove.