Patents by Inventor David L. Buss

David L. Buss 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).

  • Method of manufacture for metal trough
    Patent number: 4445260
    Abstract: A flanged trough is provided having flanges along each side of the trough with a smooth continuous curve between the flanges and the body of the trough and a bar of metal welded along the underside of each longitudinal edge of the metal sheet before the flanges are formed. The junction between the metal bars and the flanges and the welds can be covered with a sealant to form a sanitary seal. A lid and gasket can be placed over the trough to seal the contact area of material in the trough from the junction between the metal bars and the flanges of the trough to form a weather-tight, dust-tight and gas-tight conduit.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: May 1, 1984
    Inventor: David L. Buss
  • Metal trough
    Patent number: 4436518
    Abstract: A flanged trough is provided having flanges along each side of the trough with a smooth continuous curve between the flanges and the body of the trough and a bar of metal welded along the underside of each longitudinal edge of the metal sheet before the flanges are formed. The junction between the metal bars and the flanges and the welds can be covered with a sealant to form a sanitary seal. A lid and gasket can be placed over the trough to seal the contact area of material in the trough from the junction between the metal bars and the flanges of the trough to form a weather tight, dust tight and gas tight conduit.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: March 13, 1984
    Inventor: David L. Buss