The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 2025
Filed:
Jan. 13, 2023
Pillar Corporation, Osaka, JP;
Daisuke Urata, Osaka, JP;
Katsuhiko Fukui, Osaka, JP;
PILLAR CORPORATION, Osaka, JP;
Abstract
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 pressurized air to be supplied to a second suction-side air chamber (first suction-side air chamber) of a second driving unit (first driving unit) is increased at next expansion of the second bellows (first bellows). The control unit counts the number of times the pressure increase control has been consecutively performed, and when the counted number of times has exceeded a predetermined number of times, the control unit determines that the second electropneumatic regulator (first electropneumatic regulator) is abnormal.