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. 25, 2000
Filed:
Apr. 23, 1998
Applicant:
Inventors:
Leopold von Keudell, Saalem, DE;
Karl Echtler, Puchheim, DE;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 42 ; 361 42 ; 361 45 ; 361 931 ; 361115 ;
Abstract
A hand held machine tool has a protective electrode (1; 1a, 1b, 1c) located within a housing with a leakage current protective switch (2; 2a, 2b, 2c) triggered by a fixed leakage current (.SIGMA.1.sub..DELTA.), for example, 10 mA, for interrupting power supply leads (4, 5) of the machine tool with a protective conductor (3) connected to the protective electrode (1; 1a, 1b, 1c) and not being switched off.