Patents by Inventor Thomas B. Calvin

Thomas B. Calvin 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: 6325297
    Abstract: A mobile heating system for providing hot liquids is provided. The system includes a trailer mounted liquid boiler, an exit manifold for distribution through hoses, a return system communicating with a return manifold in communication with a reservoir for storing heated liquid and a bypass valved shunt such that by providing incremental heat through the liquid boiler back to the reservoir via the bypass valved shunt and then back to the boiler through the exit manifold and back to the reservoir by means of the return manifold, sufficient energy is maintained to allow atmospheric 205+ degree liquid to be circulated within the system. In one aspect of the system, by means of contact with the hot hoses, a substance is used for thawing ground, heat, melting snow and ice, curing cement, and the like. In another aspect, the liquid is water used to provide for example, hygienic liquid or hot water for field showers.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: December 4, 2001
    Inventors: Donald R. Calvin, Thomas B. Calvin
  • Patent number: 6227453
    Abstract: A mobile heating system for providing hot liquids is provided. System includes a trailer mounted liquid heater, an exit manifold for distribution through hoses, a return system communicating with a return manifold in communication with a return reservoir for storing heated liquid such that by providing incremental heat through the liquid heater to the return material sufficient energy is maintained to allow atmospheric 220+ degree liquid to be circulated within the system. In one aspect of the system, by means of contact with the hot hoses, a substance is used for thawing ground, heat, melting snow and ice, curing cement, and the like. In another aspect, the liquid is water used to provide for example, hygienic liquid or hot water for field showers. In a further aspect, the apparatus can be hooked into the hose line to provide for example, radiated heat for convection into space, such as in construction of a building, house and the like.
    Type: Grant
    Filed: May 1, 1999
    Date of Patent: May 8, 2001
    Inventors: Donald R. Calvin, Thomas B. Calvin
  • Patent number: 6126081
    Abstract: A mobile heating system for providing hot liquids is provided. System includes a trailer mounted liquid heater, an exit manifold for distribution through hoses, a return system communicating with a return manifold in communication with a return reservoir for storing heated liquid such that by providing incremental heat through the liquid heater to the return material sufficient energy is maintained to allow atmospheric 220+ degree liquid to be circulated within the system. In one aspect of the system, by means of contact with the hot hoses, a substance is used for thawing ground, heat, melting snow and ice, curing cement, and the like. In another aspect, the liquid is water used to provide for example, hygienic liquid or hot water for field showers. In a further aspect, the apparatus can be hooked into the hose line to provide for example, radiated heat for convection into space, such as in construction of a building, house and the like.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: October 3, 2000
    Inventors: Donald R. Calvin, Thomas B. Calvin