ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,392, issued on Sept. 16.
"Lubricated trailer ball and receiver assembly" was invented by Lloyd Frank Estes (Springtown, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system is disclosed herein including a tow vehicle including and a trailer. The tow vehicle includes a bed having a first surface and an opposing second surface and a receiver assembly coupled to the bed, the receiver assembly extending through the first surface and the second surface. The receiver assembly includes a hollow cylinder having a first end and a second end, the first end of the hollow cylinder coupled to the bed of the tow vehicle and a ball receiver having a semi...