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 7008180 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 07, 2006

Filed:

Jun. 26, 2003
Applicants:

Motoyuki Fujimori, Suwa, JP;

Masakazu Kitamura, Matsumoto, JP;

Toshiaki Hashizume, Okaya, JP;

Inventors:

Motoyuki Fujimori, Suwa, JP;

Masakazu Kitamura, Matsumoto, JP;

Toshiaki Hashizume, Okaya, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/38 (2006.01); G03B 21/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

An axial-flow fan has a plurality of main fins (), and auxiliary fins () provided between the main fins (), where the position of a front end of the auxiliary fin () relative to X axis and the position of a front end of the main fin () adjoining the auxiliary fin in reverse-rotary direction are aligned, the height of the auxiliary fin () is approximately three fourths of the height of the main fin (), and the cross sections of the main fin () and the auxiliary fin () taken along the axial direction of the main shaft are streamlined.


Find Patent Forward Citations

Fujimori, Motoyuki. (2006). Axial-flow fan and projector provided with the same (U.S. Patent No. 7008180). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7008180

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