Patents by Inventor Robert L. Wallis

Robert L. Wallis 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).

  • Paper making machine foil having low disturbance profile and self-sharpening tip
    Patent number: 4331511
    Abstract: A paper making machine foil is provided with one or more of the following: a narrow angle (from 14.degree. to 23.degree.) forwardly projecting doctoring nose providing a water skimming edge, a layer of wear resisting material spaced rearwardly from the skimming edge and a wear resisting facing on and along an under surface of the nose and providing a self-sharpening water stripping tip for the skimming edge, and a metal (stainless steel) body provided with a downwardly opening recess within which is mounted a mounting member (rigid plastic) having a downwardly opening shaped groove receptive of a sliding connection for mounting the foil in a paper making machine.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: May 25, 1982
    Assignee: Beloit Corporation
    Inventors: Denis A. Goddard, Robert L. Wallis