US Patent Issued to ABB on April 7 for "Propulsion unit for a marine vessel" (Finnish Inventors)

ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,038, issued on April 7, was assigned to ABB Oy (Helsinki).

"Propulsion unit for a marine vessel" was invented by Tuomas Kekki (Helsinki), Petri Pellinen (Helsinki), Sakari Siipilehto (Helsinki), Tuomas Herranen (Helsinki) and Antti Tuppurainen (Helsinki).

According to the abstract* released by the U.S. Patent & Trademark Office: "A propulsion unit for a marine vessel, including a shell structure, a shaft rotatably coupled to a propulsion motor inside the shell structure, and a propeller coupled to the shaft outside the shell structure. A shaft seal arrangement is provided to engage the shaft, such that at least a first seal chamber is delimited between adjacent seal lips and the ...