Patents by Inventor Donald Frank Rogowski

Donald Frank Rogowski 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).

  • Spouted bed wood chip debarker/cleaner
    Patent number: 5769330
    Abstract: This invention relates to a spouted bed wood chip debarker/cleaner. Such structures of this type, generally, cause wood chips and bark to undergo attrition by accelerating the wood chips and bark with a jet of air. In particular, the accelerated wood chips and bark are impinged on a screen. When the wood chips hit the screen, bark and wood chips experience attrition. Small pieces of bark and other debris (sand, for example) will be exhausted through the screen which is too fine of a mesh to let desirable size wood chips be exhausted.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: June 23, 1998
    Assignee: Westvaco Corporation
    Inventor: Donald Frank Rogowski
  • Apparatus and method for analyzing paper surface topography
    Patent number: 5684707
    Abstract: This invention relates to an apparatus and method for identifying periodic roughness variations on a paper surface. Such devices of this type, generally, collect topography data from the paper surface, analyze the data, and compare the data with known signature topographies of paper machine clothing and equipment to determine the location in the paper manufacturing process where the periodic roughness variations on the paper surface are being produced.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: November 4, 1997
    Assignee: Westvaco Corporation
    Inventor: Donald Frank Rogowski