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:
Jun. 27, 2000
Filed:
Dec. 04, 1998
Applicant:
Inventors:
Heinz Hofholzer, Linz, AT;
Augustin Kalteis, Traun, AT;
Assignee:
Textilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellschaft, Leonding, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
322 16 ; 112113 ;
Abstract
There is described a roller drive for the feed of a web of material, in particular for the web feed of a needling machine, comprising an electric drive motor (2) for at least one feed roller (1), which is connected to a mains-operated intermediate DC circuit (5). To create advantageous constructional conditions it is proposed that the mechanical drive train between the drive motor (2) and the feed roller (1) includes an additional electric motor (9) likewise connected to the intermediate DC circuit (5), which additional motor can be driven as generator by the drive motor (2).