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:
Sep. 03, 2019
Filed:
May. 18, 2018
Seiko Epson Corporation, Tokyo, JP;
Hisashi Sato, Shiojiri, JP;
Masahiko Sato, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A valve unit includes a valve seat that has a hole provided therethrough, the hole serving as part of a flow path, and a valve body that moves in a first direction relative to the valve seat. In the valve unit, the valve body includes a first portion that opens/closes the hole in collaboration with the valve seat, a second portion that is located inside the hole when viewed in the first direction, and a third portion that is located between the first portion and the second portion in the first direction and is located inside the hole while the hole is closed by the first portion. When viewed in the first direction, a gap between the hole and the third portion is larger than a gap between the hole and the second portion.