ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,246, issued on Nov. 25.
"Ball head turnable trailer" was invented by Ximing Tang (Bazhong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ball head turnable trailer is provided, including a trailer body and a trailer assembly containing a connecting component and a trailer component. The trailer component includes a mounting base and multiple ball heads. A rotating adjustment assembly includes a pin sleeve, a fixed pin, and a reset spring. A rotating shaft is roundly set with multiple fixed holes, each of which is matched with the fixed pin. A pull portion is pulled outwards to drive the fixed pin to move out from the fixed hole to release p...