IDiyas

For the Inventor, By the Inventor

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 10641282 B1

PDFFull Text
Date of Patent:
May. 05, 2020

Filed:

Dec. 08, 2017

Fan device and vacuum cleaner including the same

Applicant:

Nidec Corporation, Kyoto, JP;

Inventors:

Ryosuke Hayamitsu, Kyoto, JP;

Hitoshi Takaki, Kyoto, JP;

Tatsuya Tatara, Kyoto, JP;

Assignee:

NIDEC CORPORATION, Kyoto, JP;

Attorney:

Keating & Bennett

Primary Examiner:

Woody A Lee, Jr

Assistant Examiner:

Brian Christopher Delrue

Int. Cl.
CPC ...
F04D 17/06 (2006.01); F04D 29/38 (2006.01); A47L 5/28 (2006.01); A47L 9/28 (2006.01); F04D 25/06 (2006.01); F04D 29/54 (2006.01); F04D 25/08 (2006.01); A47L 9/14 (2006.01); F04D 29/30 (2006.01); F04D 29/42 (2006.01); F04D 29/16 (2006.01); F04D 29/28 (2006.01); F04D 29/44 (2006.01);
U.S. Cl.
CPC ...
F04D 29/384 (2013.01); A47L 5/28 (2013.01); A47L 9/149 (2013.01); A47L 9/2857 (2013.01); F04D 17/06 (2013.01); F04D 25/06 (2013.01); F04D 25/082 (2013.01); F04D 29/165 (2013.01); F04D 29/281 (2013.01); F04D 29/30 (2013.01); F04D 29/4253 (2013.01); F04D 29/444 (2013.01); F04D 29/544 (2013.01);
Abstract

A fan device includes an impeller rotating around a central axis and a motor disposed farther downward than the impeller. The impeller includes a base unit enlarged downward and plural blades disposed on a peripheral surface of the base unit. Upper portions of the blades are positioned at a leading end of a rotating direction with respect to lower portions. In an outer end portion on a front surface of each blade at the leading end of the rotating direction, a radial-direction component of a normal unit vector of an upper end portion of the blade is smaller than that of a lower end portion, assuming that an outer peripheral side of the blade is a positive direction. A thickness of a root of the lower end portion is larger than that of the upper end portion.

Find Patent Forward Citations

Loading…