Patents Assigned to Delta Thermal Systems, Inc.
  • Patent number: 6298907
    Abstract: A support means or pad which is adapted to overlie an area to be thermally regulated. A plurality of microcapsules are dispersed within the support pad. The support means may be a porous pad or overlying layers of a mesh-type fabric. The fabric sheets include a series of channels which may be zig-zag in shape and are filled with a temperature stabilizing means, for example, a macroencapsulated phase change material. Suitable phase change materials are paraffinic hydrocarbons and water. In another aspect of the invention, the temperature stabilizing means is distributed within the support means in proportion to the underlying thermal load.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: October 9, 2001
    Assignee: Delta Thermal Systems, Inc.
    Inventors: Virginia S. Colvin, David P. Colvin
  • Patent number: 6057266
    Abstract: A mycoherbicide is adapted to be sprayed in solution on to an agricultural property such as seeds, germinating seeds, seedlings or plants and comprises a moisturizer such as water which is microencapsulated for time release on to the surface of agricultural property. In a further embodiment of the invention, a microencapsulated phase change material is also added to the solution to control the temperature on the surface of the agricultural property. A sticker is employed to enhance retention of the microcapsules on the agricultural property. The solution operates to control the microclimate on the surface of the agricultural property in order to enhance the effectiveness of the mycoherbicide fungi or bacteria on the host or to provide frost/freeze protection at low temperatures.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: May 2, 2000
    Assignee: Delta Thermal Systems, Inc.
    Inventors: David P. Colvin, Donald K. Cartwright