Patents by Inventor Legl Ludwig

Legl Ludwig has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for needling a nonwoven web with a rocking needle board
    Patent number: 5548881
    Abstract: The described apparatus for needling a nonwoven web comprises at least one needle beam for carrying a needle board, a rocker for guiding the needle beam and a slider-crank mechanism for actuating the needle beam. To effect a mass compensation it is proposed that two needle beams are arranged one behind the other in the direction of travel of the nonwoven web and are guided each by a rocker and actuated each by a slider-crank mechanism and that the two slider-crank mechanisms comprise parallel crankshafts or eccentric shafts, which are rotated in mutually opposite senses.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: August 27, 1996
    Assignee: Textilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellschaft
    Inventor: Legl Ludwig