ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,723, issued on Nov. 3, was assigned to ANHUI MEIZHI COMPRESSOR Co. LTD. (Hefei, China).

"Compressor and refrigeration device" was invented by Gang Huang (Hefei, China), Yangyang Zhang (Hefei, China), Kun Wang (Hefei, China), Zihan Yan (Hefei, China) and Tao Ma (Hefei, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compressor and a refrigeration device are provided. The compressor includes a cylinder body and a piston assembly. The cylinder body has a first air suction hole at a cylinder cover of the cylinder body. The piston has a top dead center located close to the cylinder cover of the cylinder body and a bottom dead center located away fr...