US Patent Issued to Nippon Pillar Packing on Oct. 20 for "Bellows pump device" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,768,343, issued on Oct. 20, was assigned to Nippon Pillar Packing Co. Ltd. (Osaka, Japan).

"Bellows pump device" was invented by Daisuke Urata (Osaka, Japan) and Katsuhiko Fukui (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bellows pump device includes a control unit configured to perform operation control of a first driving unit and a second driving unit on the basis of respective detection signals of a first detection unit and a second detection unit such that, after expansion drive of a first bellows (second bellows) is stopped in a first mid-expansion state (second mid-expansion state) before a most expanded state, contraction drive...