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:
Oct. 03, 2006
Filed:
Sep. 14, 2004
Takahiro Iwasaki, Kariya, JP;
Takuya Usami, Kariya, JP;
Takahiro Iwasaki, Kariya, JP;
Takuya Usami, Kariya, JP;
DENSO Corporation, Kariya, JP;
Abstract
A cooling fan includes a cylindrical boss portion, a plurality of blades extending from the boss portion in a radial direction and a ring member integrated with radial outside edges of the blades. The ring member has an axial dimension smaller than an axial dimension of the blade at the radial outside edge, with respect to an axial direction of the boss portion. The ring member has an extending portion extending in a form of bell toward an upstream position of the blades with respect to an air flow. The extending portion is disposed such that a base point connecting to a body portion of the ring member is arranged in a range that begins at a point 25% and ends at a point 85% of a distance from an upstream end of the radial outside edge of the blade with respect to the axial dimension of the blade.