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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.:

US 12607181 B1

PDFFull Text
Date of Patent:
Apr. 21, 2026

Filed:

Jun. 13, 2024

Pressure actuated diaphragm pump

Applicant:

Maruyama Mfg. Co., Inc., Tokyo, JP;

Inventors:

Yushi Maruyama, Tokyo, JP;

Toshimitsu Kuzuoka, Tokyo, JP;

Toshihisa Nemoto, Tokyo, JP;

Assignee:
Attorney:

SHIPWAY IP

Primary Examiner:

Binh Q Tran

Int. Cl.
CPC ...
F04B 43/06 (2006.01); F02M 59/14 (2006.01); F04B 27/18 (2006.01); F04B 43/02 (2006.01); F04B 45/04 (2006.01); F04B 53/10 (2006.01);
U.S. Cl.
CPC ...
F04B 43/06 (2013.01); F02M 59/14 (2013.01); F04B 53/1032 (2013.01); F04B 27/1804 (2013.01); F04B 43/028 (2013.01); F04B 45/04 (2013.01); F04B 45/045 (2013.01); F04B 53/1047 (2013.01);
Abstract

A diaphragm pump includes a discharge chamber, a diaphragm configured to be actuated by a pulsation pressure, a fuel flow path fluidly coupled with the discharge chamber, and a fuel chamber located on the fuel flow path. The diaphragm includes a diaphragm actuating portion forming a part of the discharge chamber, and configured to suction fuel into the discharge chamber and to discharge the fuel from the discharge chamber in response to being actuated by the pulsation pressure, and a valve actuating portion located in the fuel chamber and configured to selectively open and close the fuel flow path.

Find Patent Forward Citations

Maruyama, Yushi. (2026). Pressure actuated diaphragm pump (U.S. Patent No. 12607181). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12607181

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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