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.:
Date of Patent:
Jun. 03, 2008
Filed:
May. 18, 2004
Applicants:
Sachiko Kaneko, Chiba, JP;
Yuji Shishido, Kanagawa, JP;
Toshio Hashimoto, Tokyo, JP;
Tooru Kimura, Tokyo, JP;
Inventors:
Sachiko Kaneko, Chiba, JP;
Yuji Shishido, Kanagawa, JP;
Toshio Hashimoto, Tokyo, JP;
Tooru Kimura, Tokyo, JP;
Assignee:
Sony Corporation, , JP;
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fan motor having a small thickness and its impeller's blades formed to have a longer length in the diametrical direction than a width in the axial direction. Since the blade of the fan motor has a tooth structure or chamfers at its edge end in the diametrical direction, turbulence is forcibly evoked in an airflow to promote the turbulent diffusion, thereby suppressing the trailing vortex and reducing the aerodynamic noises, and thus the ventilation efficiency is improved.