Patents by Inventor John I. Malcolm

John I. Malcolm 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).

  • Particulate surface sports track surface and method for reconditioning such track surface
    Patent number: 4522389
    Abstract: A track for sporting activities comprises particulate surfacing having a conditioning system for conditioning the surfacing, and a membrane for recycling liquid passing through the surfacing, the conditioning system comprising a reservoir for liquid which extends along a border of the surfacing adjacent the surfacing, and a wave propagater to cause a surge of liquid to propagate from the reservoir across and through the surfacing, the membrane extending from the reservoir and being arranged to receive liquid passing through the particulate material and to permit the liquid received thereby to pass back into the reservoir.
    Type: Grant
    Filed: August 16, 1982
    Date of Patent: June 11, 1985
    Assignee: Coinaqua Limited
    Inventor: John I. Malcolm