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:
May. 22, 2018
Filed:
Jul. 04, 2014
Fujikin Incorporated, Osaka-shi, JP;
Keisuke Ishibashi, Osaka, JP;
Taichi Kitano, Osaka, JP;
Tsuyoshi Tanikawa, Osaka, JP;
Michio Yamaji, Osaka, JP;
FUJIKIN INCORPORATED, Osaka-shi, JP;
Abstract
Provided is a diaphragm valve whose durability is improved by proper caulking. On a bottom surfaceof a depressionof a body, an annular inner projectionhaving a relatively small diameter and an annular outer projectionhaving a relatively large diameter are provided. A seatis made of synthetic resin and is inserted between the inner projectionand the outer projection. Both projectionsare caulked, whereby the seatis prevented from coming off. The height of the inner projectionis less than that of the outer projection, and a corneron the outside of the inner projectionhas a curved surface.