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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 9982665 B1

PDFFull Text
Date of Patent:
May. 29, 2018

Filed:

Aug. 17, 2014

Air compressor with improved cooling performance

Applicant:

Hitachi Koki Co., Ltd., Tokyo, JP;

Inventor:

Naoto Ichihashi, Ibaraki, JP;

Assignee:

HITACHI KOKI CO., LTD., Tokyo, JP;

Attorney:

Kenealy Vaidya LLP

Primary Examiner:

Charles Freay

Int. Cl.
CPC ...
F01D 5/14 (2006.01); F04B 39/06 (2006.01); F04B 27/02 (2006.01); F04B 35/06 (2006.01); F04B 41/02 (2006.01); F04D 25/16 (2006.01); F04D 29/32 (2006.01); H02K 9/06 (2006.01); H02K 9/14 (2006.01); F04D 25/08 (2006.01);
U.S. Cl.
CPC ...
F04B 39/066 (2013.01); F04B 27/02 (2013.01); F04B 35/06 (2013.01); F04B 41/02 (2013.01); F04D 25/082 (2013.01); F04D 25/166 (2013.01); F04D 29/326 (2013.01); F04D 29/329 (2013.01); H02K 9/06 (2013.01); H02K 9/14 (2013.01);
Abstract

In an air compressor, inner blades of a cooling fan are formed into a centrifugal type, and outer blades are formed into an axial flow type. Exterior air is sucked through a ventilating window by the outer blades, and an air stream (CA1) is generated. A part of the generated air stream flows towards a stator coil, like an air stream (CA2). By a negative pressure generated by the inner blades, the air in the vicinity of the stator coil is sucked to the inner blades, like an air stream (CA3). The sucked air flows out from a motor-side opening towards a non-motor-side opening by a negative pressure generated by the outer blades, is sucked to the outer blades like an air stream (CA4) and flows out together with the air stream (CA1).

Find Patent Forward Citations

Ichihashi, Naoto. (2018). Air compressor with improved cooling performance (U.S. Patent No. 9982665). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9982665

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

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