ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,828, issued on Sept. 30, was assigned to Kohler Co. (Kohler, Wis.).
"Grey water toilet and flushing method" was invented by Clayton C. Garrels (Sheboygan, Wis.), William C. Kuru (Plymouth, Wis.) and Randy S. Graskamp (Sheboygan, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of flushing a toilet that includes opening a first valve to introduce a first supply of grey water into a passage to prime a siphon; opening a second valve to introduce a second supply of water into a bowl from a tank, the bowl having an outlet that is in fluid communication with an inlet of the passage; closing the first valve to shut off the first supply of wate...