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:
Mar. 30, 1993
Filed:
May. 08, 1992
James J Bolzan, Jr, Baldwin, MD (US);
Douglas L Kreiser, Towson, MD (US);
Terry L Turner, Finksburg, MD (US);
Black & Decker Inc., Newark, DE (US);
Abstract
A cartridge brush assembly for fractional horse power commutated motors comprises an elongated tubular holder 17 with opposed sidewalls 31, 33 spaced transverse to a commutator rotational axis 15. A brush 19 is slidably mounted in holder 17 and protrudes through a mouth 35 of holder 17 for engaging a commutator 13. A guide 21 is slidably mounted in holder 17 and comprises a pair of spaced rounded feet 57, 59 slidably and pivotally engaging a chamfered rear face 49 of brush 19. A spring 23 biases a transversely spaced brush sidewall 45 against a transversely spaced holder sidewall 31 and biases brush 19 into engagement with commutator 13. The brush assembly reduces chattering and misalignment of the brush over the life of the brush.