Patents by Inventor Melvin V. Horpestad

Melvin V. Horpestad 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: 5105967
    Abstract: Existing dumpster lids are difficult for a user to lift and also leak some water into the container. The lids also tend to become bent when dumping into a full garbage truck, as the lid presses against the mound of trash. The present invention provides a waste container and lid assembly comprising a lid having a pivot arm which operates on a pivoting surface attached to the side of the container and having a fulcrum. The pivot arm has first, second and third pivot points on its lower surface in order to move the pivot point as the center of gravity of the lid shifts during opening to keep the center of gravity approximately over the pivot point. The lid is connected to the container by a two-piece hinge which swings the pivot arm clear of the supporting plates when the container is inverted. This allows the lid to swing freely on the two-part hinge which also permits the lid to move up or down while hanging in order to avoid damage to the lid if a solid mass is struck.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: April 21, 1992
    Inventor: Melvin V. Horpestad
  • Patent number: D250691
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: January 2, 1979
    Inventor: Melvin V. Horpestad
  • Patent number: D264750
    Type: Grant
    Filed: March 4, 1980
    Date of Patent: June 1, 1982
    Inventor: Melvin V. Horpestad