US Patent Issued to Kubota on Dec. 30 for "Seal member and pipe joint using the seal member" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,192, issued on Dec. 30, was assigned to Kubota Corp. (Osaka, Japan).

"Seal member and pipe joint using the seal member" was invented by Ryunosuke Tanaka (Amagasaki, Japan) and Keita Oda (Amagasaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A seal member includes a heel fitted into a setting groove of a socket and a bulb-shaped portion to be compressed between the socket and a spigot. The bulb-shaped portion includes a first and a second projecting portion respectively formed on the outer side and the inner circumferential side thereof. A first radius of a first circle of the first projecting portion is smaller than a second radius of a se...