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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 12577956 B1

PDFFull Text
Date of Patent:
Mar. 17, 2026

Filed:

Oct. 24, 2024

Pump device

Applicant:

Nidec Instruments Corporation, Nagano, JP;

Inventor:

Naoya Isaji, Nagano, JP;

Assignee:

NIDEC INSTRUMENTS CORPORATION, Nagano, JP;

Attorney:

HAUPTMAN HAM, LLP

Primary Examiner:

Binh Q Tran

Int. Cl.
CPC ...
F04D 29/046 (2006.01); F04D 1/00 (2006.01); F04D 13/02 (2006.01); F04D 13/06 (2006.01); F04D 25/02 (2006.01); F04D 25/06 (2006.01); F04D 29/26 (2006.01); F04D 29/42 (2006.01);
U.S. Cl.
CPC ...
F04D 29/046 (2013.01); F04D 13/06 (2013.01); F04D 1/00 (2013.01); F04D 13/024 (2013.01); F04D 13/027 (2013.01); F04D 13/0613 (2013.01); F04D 13/064 (2013.01); F04D 25/026 (2013.01); F04D 25/0606 (2013.01); F04D 25/064 (2013.01); F04D 29/26 (2013.01); F04D 29/42 (2013.01);
Abstract

A pump device includes a motor having a rotor and a stator, and an impeller which is disposed in a pump chamber and is integrally rotated with the rotor. The rotor includes a rotor member having a first cylindrical part and a drive magnet surrounding the first cylindrical part. A radial bearing is held on an inner side of the first cylindrical part. The drive magnet has a second cylindrical part surrounding an outer periphery of the first cylindrical part and a ring-shaped rib which protrudes from an end of the second cylindrical part to an inner side. The rotor member has a seat part, which protrudes from the first cylindrical part to an outer side and supports an end of the second cylindrical part, and a caulked part which is enlarged from the first cylindrical part to an outer side and is overlapped with the ring-shaped rib.

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Isaji, Naoya. (2026). Pump device (U.S. Patent No. 12577956). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12577956

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

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