ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,159, issued on Jan. 27, was assigned to SK-KAWANISHI Co. LTD. (Kagawa, Japan).
"Pipe detachment preventing device for union nut pipe fitting" was invented by Hidehito Kawanishi (Kagawa, Japan) and Akira Tsurumi (Kagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pipe detachment preventing device for a union nut pipe fitting. A protruding portion has at least a flange portion 75 having a through hole 76, and a wall portion 77 extending from the flange portion 75. An end portion 77 a of the wall portion 77 opposed to another divisional component is formed so as to protrude toward the other divisional component relative to an end portion 73...