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. 19, 2025
Filed:
Dec. 08, 2022
Applicant:
Kubota Corporation, Osaka, JP;
Inventors:
Assignee:
KUBOTA CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 21/08 (2006.01); F16L 21/03 (2006.01);
U.S. Cl.
CPC ...
F16L 21/08 (2013.01); F16L 21/03 (2013.01);
Abstract
In a pipe joint, a spigot of a first pipe is inserted into a socket of a second pipe, a lock-ring storage groove is formed in the socket, a lock ring is stored in the lock-ring storage groove, a spigot protrusion is formed on an outer circumference of the spigot, and the spigot protrusion is engaged with the lock ring from a deeper portion of the socket in a separation direction of the spigot so as to prevent the spigot from separating from the socket. The lock ring has a first surface for preventing separation facing an opening end of the socket and a second surface for preventing separation facing the deeper portion of the socket.