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:
Dec. 23, 2025
Filed:
Apr. 08, 2022
Seiko Epson Corporation, Tokyo, JP;
Osamu Katsuda, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A liquid delivery device includes a cylinder having a liquid retention section configured to retain a liquid, a piston configured to change a volume of the liquid retention section, a gas container configured to encapsulate a gas at pressure exceeding atmospheric pressure, a regulator which is coupled to the gas container, and is configured to adjust pressure of the gas delivered from the gas container, a gas flow channel having a supply flow channel configured to supply the gas delivered from the regulator to the piston, and a release-to-atmosphere flow channel configured to release the gas delivered from the regulator to an atmosphere, and a three-way valve provided to the gas flow channel to switch between delivering the gas delivered from the regulator to the supply flow channel and delivering the gas to the release-to-atmosphere flow channel.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile