Patents by Inventor Steven M. Donaldson

Steven M. Donaldson 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).

  • Portable ice rink building and resurfacing device
    Patent number: 7380355
    Abstract: A manually propelled ice rink building and resurfacing device. The device includes a chassis with removable wheels, a water tank mounted on the chassis, and a heating chamber within the water tank, the water tank receiving snow to be melted, the heating chamber in heat exchange relation to the water tank. Fluid dispensing means connected to the tank uniformly distributes, and evenly spreads a layer of water onto an ice rink surface. The device may be rolled on ice, dragged on snow, or stored in a vertical position.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: June 3, 2008
    Inventor: Steven M. Donaldson