Patents by Inventor Howell G. Lewis

Howell G. Lewis 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).

  • TUBE PURGING INSTRUMENT
    Publication number: 20110314977
    Abstract: A tube purging instrument, device has cooperating rollers which can be compressed and/or clamped together upon a flexible tube to compress the tube partially or completely between the rollers and which can then be rolled together along the length of the tube in order to advance the contents of the tube in the direction of movement of the rollers. The rollers are preferably equipped with flanges or rims which fit over an outer diameter of a tube to maintain registration of the rollers upon tube as the rollers travel in Counter-rotation along a length of the tube.
    Type: Application
    Filed: December 7, 2010
    Publication date: December 29, 2011
    Inventor: Howell G. Lewis
  • TUBE PURGING INSTRUMENT
    Publication number: 20080163731
    Abstract: A tube purging instrument device has cooperating rollers which can be compressed and/or clamped together upon a flexible tube to compress the tube partially or completely between the rollers and which can then be rolled together along the length of the tube in order to advance the contents of the tube in the direction of movement of the rollers. The rollers are preferably equipped with flanges or rims which fit over an outer diameter of a tube to maintain registration of the rollers upon tube as the rollers travel in counter-rotation along a length of the tube.
    Type: Application
    Filed: January 8, 2008
    Publication date: July 10, 2008
    Inventor: Howell G. Lewis