Patents by Inventor Harold W. Schumacher

Harold W. Schumacher 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: 4671024
    Abstract: A drip pan adapted to catch dirt and debris falling from a vehicle that is driven onto it, thereby protecting a garage floor surface underlying the drip pan from soiling or contamination. The drip pan is a rectangular sheet of plastic that is sized to extend beyond the perimeter of the vehicle with which it will be used. The edges of the plastic sheet are rolled under and thermally sealed or glued along a line parallel with the perimeter of the sheet, forming a sleeve. In one embodiment, a radially compressible cylindrical material, such as pipe insulation tubing, is inserted into the sleeves to provide a raised ridge around the perimeter of the sheet. In a second embodiment, the sleeves on each side are hermetically sealed and provided with air inflation valves so that they can be inflated to create the ridge. The ridge serves as a side wall to contain the salt, ice, or dirt that falls off the vehicle onto the sheet; a vehicle can be driven over the ridge without damaging it or permanently deforming it.
    Type: Grant
    Filed: April 7, 1986
    Date of Patent: June 9, 1987
    Inventor: Harold W. Schumacher