US Patent Issued to YAMAHA HATSUDOKI on March 17 for "Propulsion device for marine vessel and outboard motor" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,956, issued on March 17, was assigned to YAMAHA HATSUDOKI K.K. (Shizuoka, Japan).

"Propulsion device for marine vessel and outboard motor" was invented by Hiroki Koga (Shizuoka, Japan) and Jun Ebuchi (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A propulsion device for a marine vessel includes a driving source including at least one electric motor, a propeller including blades with changeable pitches and rotatable around a central axis of a propeller shaft together with the propeller shaft, a propeller shaft rotation driver to transmit a driving force from the driving source to the propeller shaft and rotate the propeller shaft ar...