US Patent Issued to ZHENGZHOU SANHUA TECHNOLOGY & INDUSTRY on Dec. 16 for "Pump assembly and proportioning machine" (Chinese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,955, issued on Dec. 16, was assigned to ZHENGZHOU SANHUA TECHNOLOGY & INDUSTRY Co. LTD. (Henan, China).

"Pump assembly and proportioning machine" was invented by Huan Li (Xingyang, China) and Yuan Li (Xingyang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a pump assembly and a proportioning machine. The pump assembly includes a driving mechanism, including a driving motor; a first pump body; a second pump body; and a third pump body. The first pump body and the second pump body are in transmission connection, when the driving motor rotates along a first direction, a rotating shaft of the third pump body does not rotate, the driv...