ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,948, issued on Oct. 28, was assigned to PILLAR Corp. (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 control unit of a bellows pump device performs pressure increase control of determining whether or not a second bellows (first bellows) is in the middle of expansion when the first bellows (second bellows) contracts to a mid-contraction state, and when a determination result thereof is positive, outputting a pressure increase command to a second electropneumatic regulator (first electropneumatic regulator) such that an air pressure of...