US Patent Issued to Shenzhen Yihong Holding Group on April 22 for "Coupling structure for cart and cart" (Chinese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,665, issued on April 22, was assigned to Shenzhen Yihong Holding Group Co. Ltd. (Shenzhen, China).

"Coupling structure for cart and cart" was invented by Chunlong Qiu (Shenzhen, China) and Xiao Zhang (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coupling structure for a cart comprises a first connector, a second connector, and a third connector. The first connector is detachably connected to the second connector, and the second connector is detachably connected to the third connector. The first connector is located inside the second connector, and the second connector is located inside the third connector, such that the first conn...