Patents by Inventor Alexander Karwoski

Alexander Karwoski 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: 5358138
    Abstract: A trash container having a drum on a dolly. The drum, which is open at the top and bottom and includes openings along its surface, is positioned upon the dolly for easy moving and positioning. A trash bag liner is located within the drum such that when the liner is filled, the dolly is rolled to a disposal pick-up site. The drum is first lifted and the filled liner is then removed from the dolly. After depositing the liner, the drum is returned to the dolly. The drum shape is preferably in the form of a truncated square pyramid, a truncated rectangular pyramid, or a truncated cone, and in several embodiments of the invention, the drum has raised ribs extending longitudinally on its exterior surface to prevent stacked drums from adhering together.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: October 25, 1994
    Inventor: Alexander Karwoski
  • Patent number: 5295606
    Abstract: A trash container having a drum whose shape is in a form of a truncated cone on a dolly. The drum, which is open at the top and bottom and includes openings along its surface, is positioned upon the dolly for easy moving and positioning. A trash liner is located within the drum such that when the liner is filled, the dolly is rolled to a disposal pick-up site. The drum is first lifted and the filled liner is then removed from the dolly. After depositing the liner, the drum is returned to the dolly.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: March 22, 1994
    Inventor: Alexander Karwoski