US Patent Issued to Polaris Industries on Nov. 3 for "4-stroke 3-cylinder engine" (Swiss, American Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,651, issued on Nov. 3, was assigned to Polaris Industries Inc. (Medina, Minn.).

"4-stroke 3-cylinder engine" was invented by Hans-Rudolf Jenni (Burgdorf, Switzerland), Ronald Zurbruegg (Burgdorf, Switzerland), Niclas Roch (Burgdorf, Switzerland), Marcel Frei (Burgdorf, Switzerland), James H. Buchwitz (Roseau, Minn.), Darren J. Hedlund (Roseau, Minn.), Matthew D. Reeves (Wyoming, Minn.) and Beat R. Kohler (Burgdorf, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "An engine is provided including a crankshaft with an optimized bearing configuration, an integrated starter-generator, an integrated thermostat configured to improve cold start per...