US Patent Issued to Deere & Co. on Aug. 25 for "Labyrinth seal for rear of internal combustion engine" (Indian, American Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,504, issued on Aug. 25, was assigned to Deere & Co. (Moline, Ill.).

"Labyrinth seal for rear of internal combustion engine" was invented by Swapnil S. More (Pune, India), Vaibhav V. Karekar (Pune, India), Ayoub J. Siddiqui (Cedar Falls, Iowa) and Richard T. Hurban (Cedar Falls, Iowa).

According to the abstract* released by the U.S. Patent & Trademark Office: "An internal combustion engine includes an engine block rotatably supporting a crankshaft for rotation about a crank axis. The engine block includes a rear end wall that defines a rear crankcase opening. A rear main seal is positioned within the rear crankcase opening. The rear main seal is configured for sealing the rear cra...