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:
May. 16, 2006
Filed:
Dec. 18, 2002
Applicant:
Michael Steffen, München, DE;
Inventor:
Michael Steffen, München, DE;
Assignee:
Wacker Construction Equipment AG, Munich, DE;
Primary Examiner:
Int. Cl.
CPC ...
B65H 75/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
A frequency converter device is integrated inside a cable roller, in such a manner that at least one socket is supplied at special frequency. The socket does not rotate when the cable is wound or unwound on the drum. Furthermore, optimal cooling is created and the frequency converter device is made of at least one frequency converter enabling a special frequency to be provided.