ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,171, issued on Jan. 27, was assigned to Honda Motor Co. Ltd. (Tokyo).
"Marine vessel propulsion apparatus" was invented by Norikazu Kawai (Wako, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A propulsion apparatus includes a screw, a unit case, an anti-cavitation plate, a heat generation portion, and a cooling liquid passage. The screw is submerged in outside water and generates a propulsion force. The unit case accommodates at least a power transmission mechanism which transmits power from a drive source to the screw. The anti-cavitation plate is arranged on the unit case at a higher position than the screw, and at least part of the anti-cav...