US Patent Issued to VOLVO PENTA on Dec. 16 for "Angularly positioned marine propeller combination and a method of operating a marine propeller combination" (Swedish Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,147, issued on Dec. 16, was assigned to VOLVO PENTA Corp. (Gothenburg, Sweden).

"Angularly positioned marine propeller combination and a method of operating a marine propeller combination" was invented by Lars Johansson (Savedalen, Sweden), Johan Tell (Gothenburg, Sweden) and Peter Carlsson (Stenungsund, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A marine propeller combination for a marine propulsion unit includes a first propeller and a second propeller arranged to rotate simultaneously in opposite directions about a common rotational axis. The marine propeller combination is configured such that the first and second propellers are angul...