US Patent Issued to YAMAHA HATSUDOKI on Oct. 28 for "Outboard motor" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,340, issued on Oct. 28, was assigned to YAMAHA HATSUDOKI K.K. (Shizuoka, Japan).

"Outboard motor" was invented by Kimitaka Saruwatari (Shizuoka, Japan), Seiji Arai (Shizuoka, Japan) and Shuhei Okamoto (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An outboard motor includes a first case accommodating an engine and an upper housing below the first case. At least a portion of an exhaust passage is in the upper housing and extends downward from the engine. A second case is below the upper housing. The second case includes a torpedo portion, an exhaust inlet, an exhaust outlet, and an exhaust chamber. The torpedo portion includes an int...