US Patent Issued to KOSMEK on May 26 for "Coupling device" (Japanese Inventor)

ALEXANDRIA, Va., May 26 -- United States Patent no. 12,638,117, issued on May 26, was assigned to KOSMEK LTD. (Japan).

"Coupling device" was invented by Akira Arisato (Kobe, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a compact coupling device. This coupling device has a first joint and a second joint. In the second joint, a sub valve chamber and a main valve chamber are formed so as to be continuous in the vertical direction. A sub valve member is inserted into the sub valve chamber so as to be movable in the vertical direction in a sealed manner. The sub valve member is urged downward by a second valve-closing spring against a sub valve seat formed inside the sub valve chamber. A commu...