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:
Apr. 07, 1981
Filed:
Aug. 21, 1979
Applicant:
Inventor:
Werner Theissig, Munich, DE;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 50 ; 310 43 ;
Abstract
In a hand-held drill driven by an electric motor, the motor stator is positioned within a metal casing. A plastic layer covers the interior surface of the metal casing and laterally encloses the stator. Openings are formed through the metal casing between its interior and exterior surface and the plastic layer is held in interlocking engagement within these openings.