ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,509, issued on Feb. 17, was assigned to KAWASAKI MOTORS LTD. (Hyogo, Japan).
"Jet propulsion boat thrust control system" was invented by Toshio Araki (Akashi, Japan), Kazumasa Hisada (Akashi, Japan), Daisuke Kawai (Kobe, Japan), Shohei Terai (Kobe, Japan), Takuya Sakamoto (Akashi, Japan) and Yoshihito Uchino (Akashi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A jet propulsion boat includes: a boat body; a propulsion device that imparts propulsion force to the boat body to propel the boat body; an engine and an electric motor that drive the propulsion device; and a control device that determines which of an engine mode and an electric mode ...