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. 05, 2004
Filed:
May. 08, 2002
Yoshio Ebihara, Kariya, JP;
Denso Corporation, , JP;
Abstract
An electric motor provides a carbon contact member of a commutator from colliding with a brush holder. A projection is formed in the brush holder so that it projects toward an end face of a resin mold of an armature. An end face of this projection, which is opposed to the end face of the resin mold of the armature, is positioned in the axial direction so as to form a clearance between the contact members and the brush holder when the armature is moved toward the brush holder by an external force and the end face comes in contact with the end face. As a result, if shock is applied to the fuel pump and the armature moves toward the brush holder, the contact members of the commutator are prevented from colliding with the brush holder. It thereby becomes possible to prevent the carbon contact members from being damaged.