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:
Aug. 22, 1995
Filed:
Dec. 16, 1993
Kazuo Okada, Chiba, JP;
Mabuchi Motor Co., Ltd., Matsudo, JP;
Abstract
A miniature motor comprising a case made of a metallic material, formed into a bottom hollow tubular shape and having a permanent magnet fixedly fitted to the inner circumferential surface thereof, a rotor consisting of an armature facing the permanent magnet and a commutator, and a case cover engaged with an open end of the case and comprising brushes making sliding contact with the commutator and input terminals electrically connected to the brushes; the rotor being rotatably supported by bearings provided on the bottom of the case and the case cover, and a printed circuit board having a control element and a soundproofing plate made of a soundproofing material being provided outside the case cover, in which the soundproofing plate is formed into a cross shape when projected on a plane orthogonally intersecting the axial line of the rotor.