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. 23, 2025
Filed:
Sep. 20, 2019
Pigeon Corporation, Chuo-ku, JP;
Yukifumi Ochiai, Tokyo, JP;
Pigeon Corporation, Chuo-ku Tokyo, JP;
Abstract
A breast pump includes a main body, a diaphragm, a handle, a connecting portion, and a volume reduction portion. The main body includes a hood attaching portion attached to the hood, a bottle attaching portion attached to a bottle for collecting milk, and an internal passage extending between the hood attaching portion and the bottle attaching portion. The diaphragm is attached to the internal passage and is configured to generate negative pressure in the internal passage. The connecting portion connects the diaphragm and the handle and is configured to displace the diaphragm in a lifting direction in accordance with movement of the handle. The volume reduction portion is inserted into the internal passage and is configured to reduce a volume of the internal passage.