ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,682, issued on Dec. 23, was assigned to SEIKO EPSON Corp. (Tokyo).
"Liquid delivery device and liquid spray device" was invented by Osamu Katsuda (Matsumoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "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...