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. 11, 2025
Filed:
Dec. 27, 2022
Iwaki Co., Ltd., Tokyo, JP;
Masaki Kikuchi, Iruma-gun, JP;
IWAKI CO., LTD., Tokyo, JP;
Abstract
A mounting structure for a diaphragm and a retainer includes: the diaphragm that is formed to have a disc shape and includes a fixation part positioned in an outer circumferential part of the diaphragm, a movable part positioned in a central part of the diaphragm, and a linking part linking the fixation part and the movable part together, wherein a side of the diaphragm facing a pump chamber is defined as a front side and a side of the diaphragm opposite from the pump chamber is defined as a rear side; and the retainer that has an annular shape, supports the rear side of the movable part of the diaphragm, and reciprocates, together with the movable part, in an advancement/retreat direction to and from the pump chamber. The diaphragm has a first R-shaped part recessed toward the pump chamber, on the rear side of a boundary section between the movable part and the linking part. The retainer includes an abutment part that abuts against the rear side of the diaphragm and a second R-shaped part that is formed in an outer circumferential position of the abutment part so as to protrude toward the pump chamber and that mates with the first R-shaped part.