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:
Nov. 26, 2019
Filed:
Jun. 23, 2017
Ricoh Company, Ltd., Tokyo, JP;
Yoichi Kawabata, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid supply apparatus includes a liquid container to temporarily store liquid, a vacuum device connected to the liquid container to decompress the liquid container to form a negative pressure in the liquid container and a negative pressure forming device disposed between the liquid container and the vacuum device. The vacuum device includes a gas chamber connected to the liquid container, a flexible member forming a part of wall surface of the gas chamber, a first elastic member to push the flexible member in a first direction to expand the gas chamber, a pressing member to push the flexible member in a second direction opposite the first direction to compress the gas chamber. The gas chamber moves between a connection position and a cutoff position.