ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,930, issued on Feb. 3.
"Motorized supplemental trailer axle" was invented by Andrew Blair (Castlerock, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A motorized supplemental trailer axle includes an axle securable to a trailer and having a wheel affixed to opposing ends thereof. A motor for powering the axle wheels is operably connected to a battery power supply. A transfer case having a clutch mechanism is operably connected to the motor and the axle, wherein the clutch mechanism is configured to selectively engage the motor with the axle to rotate the pair of wheels. A control module includes a sensor configured to monitor rotational speed o...