US Patent Issued to Kubota on Aug. 19 for "Pipe joint and pipe joining method" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,428, issued on Aug. 19, was assigned to Kubota Corp. (Osaka, Japan).

"Pipe joint and pipe joining method" was invented by Ryunosuke Tanaka (Amagasaki, Japan), Yuito Komaru (Amagasaki, Japan) and Keita Oda (Amagasaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "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 th...