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:
Jul. 01, 2003
Filed:
Aug. 23, 2001
Applicant:
Inventors:
Helmut Burger, Moorenweis, DE;
Hermann Schuster, Geltendorf, DE;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 5/00 ;
U.S. Cl.
CPC ...
H02K 5/00 ;
Abstract
A universal electric motor ( ) for driving an electric hand-held tool device which experiences a high dust load, has a commutator ( ), with carbon brushes ( ) and lamellas ( ). The motor has, for protection against dust particles carried along in the cooling air flowing through it, a protective shield ( ) of a stiff and thermally conductive material.