Patents by Inventor ROBERT J. WIETHARN

ROBERT J. WIETHARN 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).

  • Self-cleaning screen assembly for filtering irrigation water
    Patent number: 9023198
    Abstract: A self-cleaning screen includes a rotatable drum made of mesh material and an inlet pipe extending through a front end of the drum. A flotation structure supports the drum with the inlet pipe and the lower part of the drum submerged during use. A cleaning spray system located within the drum receives cleaning water through a hollow shaft supporting a rear end of the drum. Spray nozzles located within an upper part of the drum above the water level direct the cleaning water radially outward to dislodge debris from the screen. The front end of the drum includes an annular ring and a rubber seal extending radially inwardly from the annular ring to engage the inlet pipe. A drive belt extends around the annular ring to rotate the drum. A plurality of rollers engage a surface of the annular ring to support the drum for rotation about a horizontal axis.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: May 5, 2015
    Inventor: Robert J Wietharn
  • SELF-CLEANING SCREEN ASSEMBLY FOR FILTERING IRRIGATION WATER
    Publication number: 20140138300
    Abstract: A self-cleaning screen includes a rotatable drum made of mesh material and an inlet pipe extending through a front end of the drum. A flotation structure supports the drum with the inlet pipe and the lower part of the drum submerged during use. A cleaning spray system located within the drum receives cleaning water through a hollow shaft supporting a rear end of the drum. Spray nozzles located within an upper part of the drum above the water level direct the cleaning water radially outward to dislodge debris from the screen. The front end of the drum includes an annular ring and a rubber seal extending radially inwardly from the annular ring to engage the inlet pipe. A drive belt extends around the annular ring to rotate the drum. A plurality of rollers engage a surface of the annular ring to support the drum for rotation about a horizontal axis.
    Type: Application
    Filed: January 10, 2014
    Publication date: May 22, 2014
    Inventor: Robert J. Wietharn
  • Self-cleaning screen assembly for filtering irrigation water
    Patent number: 8652324
    Abstract: A self-cleaning screen includes a rotatable drum made of mesh material and an inlet pipe extending through a front end of the drum. A flotation structure supports the drum with the inlet pipe and the lower part of the drum submerged during use. A cleaning spray system located within the drum receives cleaning water through a hollow shaft supporting a rear end of the drum. Spray nozzles located within an upper part of the drum above the water level direct the cleaning water radially outward to dislodge debris from the screen. The front end of the drum includes an annular ring and a rubber seal extending radially inwardly from the annular ring to engage the inlet pipe. A drive belt extends around the annular ring to rotate the drum. A plurality of rollers engage an outer surface of the annular ring to support the drum for rotation about a horizontal axis.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: February 18, 2014
    Inventor: Robert J. Wietharn
  • SELF-CLEANING SCREEN ASSEMBLY FOR FILTERING IRRIGATION WATER
    Publication number: 20110233132
    Abstract: A self-cleaning screen includes a rotatable drum made of mesh material and an inlet pipe extending through a front end of the drum. A flotation structure supports the drum with the inlet pipe and the lower part of the drum submerged during use. A cleaning spray system located within the drum receives cleaning water through a hollow shaft supporting a rear end of the drum. Spray nozzles located within an upper part of the drum above the water level direct the cleaning water radially outward to dislodge debris from the screen. The front end of the drum includes an annular ring and a rubber seal extending radially inwardly from the annular ring to engage the inlet pipe. A drive belt extends around the annular ring to rotate the drum. A plurality of rollers engage an outer surface of the annular ring to support the drum for rotation about a horizontal axis.
    Type: Application
    Filed: March 25, 2011
    Publication date: September 29, 2011
    Inventor: ROBERT J. WIETHARN