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:
Nov. 16, 2010
Filed:
Dec. 29, 2008
Hiroo Kaizu, Nishio, JP;
Hiroo Kaizu, Nishio, JP;
Denso Corporation, Kariya, JP;
Abstract
A vehicle alternator is disclosed as having a rotor including magnetic pole pieces, each having claw-like magnetic pole fingers, a field coil wound on boss portions of the magnetic pole pieces, and cooling fans fixedly mounted on the magnetic pole pieces, respectively. Each cooling fan includes a central disc portion, a plurality of fan base portions formed on the central disc portion, and fan blades standing upright from the fan base portions in an axially outward direction, respectively. The central disc portion has an outer circumferential periphery formed with a plurality of cutout portions to be contiguous with roots of the fan base portions, respectively, and placed in areas radially inward of the fan blades, respectively. Each cutout portion is so placed to be perpendicular to the radial direction on which each claw-like magnetic pole finger is oriented.