Patents by Inventor Andre M. Ludwig

Andre M. 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).

  • Publication number: 20080011145
    Abstract: An insertable tooth for wood-cutting apparatus features a blade with a front surface having side edges extending parallel to a radius of a disc in which the tooth is inserted and positioned ahead of the rest of the blade so that the front surface side edges lead the tooth as the disc rotates in a predetermined direction. The cutting edge of the blade extends along the most radially outward extent of a region connecting the two front surface side edges and being positioned rearwardly therefrom. A top surface and the front surface each feature two side faces disposed on opposite sides of a planar central face. On the top surface, each side face extends radially inwardly from a top surface side edge to the central face. On the front surface, each side face extends rearwardly away from one of the front surface side edges to the central face.
    Type: Application
    Filed: July 14, 2006
    Publication date: January 17, 2008
    Inventor: Andre M. Ludwig
  • Patent number: 4765217
    Abstract: Wood-cutting apparatus with an insertable tooth in which the blade is positioned radially outwardly on a flat, elongated metallic plate and comprises two side edges, each of which: (a) extends generally radially (i.e parallel to a radius of the disc in which the tooth is inserted); and (b) is positioned ahead of the plate and other portions of the blade so that the side edges lead the tooth as the disc rotates in a predetermined rotational direction. The cutting edge of the blade extends along the most radially outward extent of a region of the blade connecting the two side edges, the connecting region being positioned rearwardly from those side edges in the rotational direction.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: August 23, 1988
    Inventor: Andre M. Ludwig