ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,629, issued on May 20, was assigned to MABUCHI MOTOR OKEN Co. LTD. (Tokyo).
"Diaphragm pump" was invented by Masatsugu Shirai (Tokyo) and Kazuki Itahara (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A diaphragm pump converts rotation of a motor into a reciprocating motion and drives a diaphragm. The diaphragm pump includes a partition configured to form a pump chamber together with a deformation portion of the diaphragm, a suction passage communicating with the pump chamber via a suction through hole extending through the partition, and a suction valve configured to open/close the suction passage. The valve body of the suction valve includes...