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:
May. 15, 1990
Filed:
Dec. 21, 1988
Makita Electric Works, Ltd., Anjo, JP;
Abstract
An electric motor includes a commutator and a brush assembly. The brush assembly includes a pair of brushes, each disposed in operative relation to the commutator, a pair of brush holders each supporting at least one of the brushes, and an assembly base (69, 74) for securing the brush holders thereto. The assembly base includes a base plate of insulating material and at least two severable conductive passages (71, 72) each secured to the base plate. The conductive passages are adapted to supply electric current to the pair of brushes from different directions and drive the electric motor for rotation in either forward or reverse direction when either one of the passages is severed for permitting use of a single brush assembly in different kinds of motors.