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. 03, 2023
Filed:
Aug. 28, 2020
Asahi Yukizai Corporation, Nobeoka, JP;
Hiroshi Suenaga, Nobeoka, JP;
Kenro Yoshino, Nobeoka, JP;
ASAHI YUKIZAI CORPORATION, Nobeoka, JP;
Abstract
A valve device includes a valve main body having a valve chamber, and inflow and outflow passages communicating with the valve chamber; an annular valve seat surrounding an opening from the inflow passage to the valve chamber; and a valve element moved to contact with and separate from the valve seat. One of the valve seat and the valve element includes a contact surface, and the other of the valve seat and the valve element includes an annular raised rib. The rib has at a top thereof an annular sealing part contacting the contact surface to provide sealing between the valve element and the valve seat. The sealing part includes an annular flat surface extending parallel to the contact surface, and two annular inclined surfaces provided adjacent to the flat surface on both sides and inclined to the flat surface to extend in a direction away from the contact surface.