Patents by Inventor Robert L. Lavallee

Robert L. Lavallee 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).

  • Patent number: 4949761
    Abstract: A contoured continuous length fabric having warp yarns extending latitudinally thereof which are positioned closer together as they approach the outer contoured surface of the fabric and weft yarns extending longitudinally and being substantially equally spaced along the length thereof relative to each other.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: August 21, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Gilles A. Fleury, Robert L. LaVallee, Thomas S. Ohnstad
  • Patent number: 4825912
    Abstract: A loom for weaving contoured cloth has a shed forming part for forming a warp yarn shed, a rapier apparatus for inserting successive lengths of weft yarn through the shed, a beating up apparatus for beating up the weft yarns into a woven fabric, a contoured rotatably driven mandrell positioned downstream, relative to the direction of the warp yarn movement, for receiving the woven fabric and drawing it from the beating up apparatus, the mandrel having at least a part thereof with a spheroidal shape for giving a spheroidal shape to the fabric passed around the mandrel, nip rollers pressing the woven fabric against the mandrel for causing said mandrel to draw the woven fabric from the beating up apparatus and shape the fabric according to the contour of the mandrel, a fabric guide having a contour along the mandrel corresponding to the contour of said mandrel and guiding the fabric into engagement with the mandrel, and warp yarn path length extenders positioned along the path of the fabric from the beating up a
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: May 2, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Gilles A. Fleury, Robert L. Lavallee, Thomas S. Ohnstad