ALEXANDRIA, Va., May 5 -- United States Patent no. 12,616,347, issued on May 5, was assigned to ZHEJIANG PRULDE ELECTRIC APPLIANCE Co. LTD. (Jinhua, China).
"Bidirectional cleaning machine" was invented by Weiming Yang (Jinhua, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bidirectional cleaning machine includes a cleaning mechanism and a handle. The cleaning mechanism includes a housing, a transmission shaft is mounted in the housing, a first gear is arranged on the transmission shaft, and one end of the transmission shaft is fixedly connected to an inner cleaning disk; the transmission shaft is sleeved with a transmission sleeve, and one end of the transmission sleeve is perpendicularly and fixedl...