Patents by Inventor Richard S. Crabtree

Richard S. Crabtree 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: 6582769
    Abstract: A method for conditioning a metering blade of a paper coating machine. The method includes the steps of providing a paper coating machine having at least one metering blade and passing a movable substrate through the paper coating machine such that the metering blade contacts the substrate to distribute any coatings applied to the substrate. The method further includes the step of applying a solution of abrasive material to the substrate at a location upstream of the metering blade such that the abrasive material engages and conditions the blade.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: June 24, 2003
    Assignee: MeadWestvaco Corporation
    Inventor: Richard S. Crabtree
  • Publication number: 20030099777
    Abstract: A method for conditioning a metering blade of a paper coating machine. The method includes the steps of providing a paper coating machine having at least one metering blade and passing a movable substrate through the paper coating machine such that the metering blade contacts the substrate to distribute any coatings applied to the substrate. The method further includes the step of applying a solution of abrasive material to the substrate at a location upstream of the metering blade such that the abrasive material engages and conditions the blade.
    Type: Application
    Filed: November 28, 2001
    Publication date: May 29, 2003
    Inventor: Richard S. Crabtree
  • Patent number: 5820937
    Abstract: A process for forming an abrasion resistant sheet which comprises forming a web of cellulosic fibers on a papermaking machine and applying a slurry including an abrasion-resistant grit to the upper surface of the web on the papermaking machine using a slot orifice coating head applicator, said grit being uniformly distributed on said surface of said fibrous cellulosic overlay sheet at a coat weight of about 2 to 40 pounds per 3000 square feet.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: October 13, 1998
    Assignee: The Mead Corporation
    Inventors: Richard S. Crabtree, Larry O. Hill