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. 22, 2005
Filed:
Jun. 26, 2003
Shinsuke Miyazaki, Obu, JP;
Katsuya Torii, Anjo, JP;
Hidetoshi Uchiyama, Tokai, JP;
Denso Corporation, , JP;
Abstract
A throttle device which prevents the entry of foreign compounds into a slidable contact portion between a brush and a commutator is provided to prevent the malfunctioning of a motor. A first shielding portion is integrally formed in a brush holder, which is attached to a yoke of a motor for holding a brush. The plate-shaped first shielding portion covers the vicinity of the yoke in the outer periphery of the yoke. Accordingly, the first shielding portion covers a gap left between the yoke and the brush holder, and a slidable contact portion between a commutator and the brush on a throttle gear side. Therefore, the first shielding portion prevents a foreign compound, generated in an engagement portion between the throttle gear and a reduction gear and falling onto a motor, from moving to the slidable contact portion, so that it is possible to prevent poor contact between the commutator and the brush.