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:
Feb. 15, 1994
Filed:
Mar. 03, 1992
Applicant:
Inventor:
Ernst Zolda, Korntal-Muenchingen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310219 ; 310 89 ; 310190 ; 310209 ; 310233 ; 310239 ; 310248 ; 417366 ;
Abstract
An electric motor has a tubular housing part, permanent magnets arranged inside the housing part, a rotatable motor armature with a collector having a running surface, a plurality of sliding brushes having sliding surfaces abutting against the running surface of the collector, and an element for loading the motor armature in direction of its rotary axis toward the sliding brushes so that the running surface of the collector which in its projection is formed as an annular surface abuts against the sliding surfaces of the sliding brushes.