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:
Jul. 01, 2008
Filed:
May. 18, 2005
Mikio Mashino, Kariya, JP;
Mikio Mashino, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
An automotive alternator has slip-rings connected to a rotor shaft and a brush device covering the slip-rings. The brush device is composed of a brush holder supporting brushes therein and a slip-ring cover firmly connected to the brush holder. The slip-ring cover includes a wall curved in a U-shape and a pair of flat walls closing the axial ends of the curved wall. Openings for ventilating the brushes and the slip-rings are formed between the curved wall of the slip-ring cover and the sidewalls of the brush holder. When the brushes are positioned downward of the slip-rings, the openings are open to the downward of the slip-rings. Therefore, water is prevented from entering into the brush device through the openings.