US Patent Issued to AISAN KOGYO on Sept. 1 for "Flow control valve" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,661, issued on Sept. 1, was assigned to AISAN KOGYO K.K. (Obu, Japan).

"Flow control valve" was invented by Keiji Nakaya (Nisshin, Japan), Shinji Murai (Obu, Japan) and Yasuhiro Tsuzuki (Chita-gun, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A flow control valve includes a valve seat, a valve plug movable relatively to the valve seat between a valve open position and a valve closed position, and a seal member interposed between the valve seat and the valve plug. The seal member includes a base portion attached to one of the valve seat and the valve plug, and a seal lip having a circular truncated cone shape and protruding obliquely inward i...