Patents by Inventor Peter Leslie Hart

Peter Leslie Hart 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).

  • Water sump structure
    Patent number: 7942015
    Abstract: A water sump structure (1) is provided. A channel, trough, trench or the like is formed as or provided with an impermeable member (7) for trapping water. One or more heat exchange pipes (6) for carrying a heat exchange fluid are located, in use, so as to pass through water trapped by the impermeable member thereby forming a heat exchange water sump structure.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: May 17, 2011
    Assignee: Formpave Holdings, Ltd.
    Inventor: Peter Leslie Hart
  • Paving block
    Patent number: 6939077
    Abstract: There is disclosed a paving block for use in the construction of a paved surface, which paving block has a top surface, a bottom surface and at least one lateral surface extending between the top and bottom surfaces and abutting in use at least part of a lateral surface of at least one adjacent paving block, wherein a portion of the lateral surface of the paving block adjacent to the top surface is tapered.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: September 6, 2005
    Assignee: Formpave Holdings Limited
    Inventor: Peter Leslie Hart