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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 9771947 B1

PDFFull Text
Date of Patent:
Sep. 26, 2017

Filed:

Feb. 28, 2012

Cross-flow fan, molding die, and fluid feeder

Applicants:

Yukishige Shiraichi, Osaka, JP;

Masaki Ohtsuka, Osaka, JP;

Inventors:

Yukishige Shiraichi, Osaka, JP;

Masaki Ohtsuka, Osaka, JP;

Assignee:

SHARP KABUSHIKI KAISHA, Sakai, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Mark Laurenzi

Assistant Examiner:

Wesley Harris

Int. Cl.
CPC ...
F04D 29/28 (2006.01); B64C 23/00 (2006.01); F04D 29/66 (2006.01); F24F 1/00 (2011.01); B64C 23/06 (2006.01); F24F 13/24 (2006.01); B64C 21/10 (2006.01); F04D 17/04 (2006.01); F04D 29/30 (2006.01);
U.S. Cl.
CPC ...
F04D 29/283 (2013.01); B64C 21/10 (2013.01); B64C 23/00 (2013.01); B64C 23/06 (2013.01); F04D 17/04 (2013.01); F04D 29/282 (2013.01); F04D 29/30 (2013.01); F04D 29/66 (2013.01); F04D 29/663 (2013.01); F04D 29/666 (2013.01); F04D 29/667 (2013.01); F24F 1/00 (2013.01); F24F 1/0025 (2013.01); F24F 13/24 (2013.01); B64C 2230/26 (2013.01); F05B 2240/301 (2013.01); F24F 2001/0048 (2013.01); Y02T 50/166 (2013.01); Y02T 70/121 (2013.01);
Abstract

A cross-flow fan includes a plurality of fan blades provided to be circumferentially spaced apart from each other. The fan blade has an inner edge portion arranged on the radially inner side to/from which air flows in/out, and an outer edge portion arranged on the radially outer side to/from which air flows in/out. Fan blade has a blade surface extending between the inner edge portion and the outer edge portion. The blade surface includes a pressure surface arranged on the rotation direction side of the cross-flow fan and a suction surface arranged on the back side of the pressure surface. When cut along a plane orthogonal to the rotation axis of the cross-flow fan, the fan blade has a blade cross-sectional shape in which a concave portion concave from the pressure surface is formed.

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