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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 9291155 B1

PDFFull Text
Date of Patent:
Mar. 22, 2016

Filed:

Jun. 25, 2013

Vacuum pump motor and vacuum pump having balance rings

Applicant:

Ebara Corporation, Tokyo, JP;

Inventors:

Yoshinori Ojima, Tokyo, JP;

Takashi Hozumi, Tokyo, JP;

Naoya Yoshida, Tokyo, JP;

Takanori Inada, Tokyo, JP;

Toshiharu Nakazawa, Tokyo, JP;

Assignee:

EBARA CORPORATION, Tokyo, JP;

Attorney:

Rothwell, Figg, Ernst & Manbeck, P.C.

Primary Examiner:

Michael Andrews

Int. Cl.
CPC ...
H02K 7/04 (2006.01); F04B 17/00 (2006.01); F04C 29/00 (2006.01); H02K 15/16 (2006.01); F04B 17/03 (2006.01); H02K 7/14 (2006.01);
U.S. Cl.
CPC ...
F04B 17/00 (2013.01); F04C 29/0085 (2013.01); H02K 7/04 (2013.01); F04C 2220/10 (2013.01); F04C 2230/605 (2013.01); F04C 2240/40 (2013.01); F04C 2270/12 (2013.01); F04C 2280/04 (2013.01); H02K 7/14 (2013.01);
Abstract

In order to provide a vacuum pump motor which is free from rotation imbalance, there is provided a vacuum pump motorwhich is connected directly to a pump main shaftof a vacuum pump, including a motor rotorwhich is attached directly or indirectly to the pump main shaftand balance ringswhich are attached directly or indirectly to the pump main shaftat ends thereof which are spaced apart from end portions of a rotor core, wherein the balance ringscontain a material having anticorrosion properties.

Find Patent Forward Citations

Ojima, Yoshinori. (2016). Vacuum pump motor and vacuum pump having balance rings (U.S. Patent No. 9291155). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9291155

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

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