Patents by Inventor William N. Franklin

William N. Franklin 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).

  • Low energy consumption air conditioning system
    Patent number: 4616487
    Abstract: A system for conditioning the air in a building which is inexpensive and economical to operate. The air is conditioned in three stages. First, the air passes through a water evaporator. Second, the air passes through a subterranean conduit to exchange heat with the ground. Third, the air passes through a refrigerant evaporator. A solar collector having reflectors to concentrate and direct the solar energy at a heat exchange coil is provided. A heat exchange oil is circulated through the coil. The refrigerant from the refrigerant evaporator passes through two stages of heat exchange. In the first stage, there is heat exchange with the water coming from the water evaporator. In the second stage, there is heat exchange with the oil coming from the solar collector.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: October 14, 1986
    Inventor: William N. Franklin