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.

Date of Patent:
Jun. 12, 2018

Filed:

Oct. 26, 2015
Applicant:

Nidec Corporation, Kyoto, JP;

Inventors:

Takamasa Yamashita, Kyoto, JP;

Ryosuke Hayamitsu, Kyoto, JP;

Toshiyuki Miyashita, Kyoto, JP;

Assignee:

NIDEC CORPORATION, Kyoto, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/38 (2006.01); F04D 25/08 (2006.01); F04D 19/00 (2006.01);
U.S. Cl.
CPC ...
F04D 29/384 (2013.01); F04D 25/088 (2013.01); F04D 29/388 (2013.01); F04D 19/002 (2013.01); F04D 25/08 (2013.01); F05D 2240/304 (2013.01); F05D 2250/38 (2013.01);
Abstract

A ceiling fan blade, which is rotated by a motor unit having a center axis extending in an up-down direction, includes a blade body extending in a radial direction and including at least one slit opened at a rotation direction rear edge of the blade body. On a circumferential cross section including a rotation direction front end of the slit of the blade body, a lower end of a rotation direction front edge of the blade body is positioned at a center axis direction upper side of a lower end of the rotation direction front end of the slit. Further, a lower end of an open end of a radial outer edge of the slit is positioned axially downward of the lower end of the rotation direction front end of the slit and is positioned axially upward of a lower end of an open end of a radial inner edge of the slit.


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