Patents by Inventor John C. Coyle

John C. Coyle 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).

  • Vehicle air conditioning system
    Patent number: 3934642
    Abstract: A vehicle air conditioning system comprises an intake, refrigerant evaporator, heater, heat by-pass conduit temperature and air flow regulating means and ducting leading to the vehicle interior. Control means operate to maintain the air conditioning system de-energised engine start up until the vehicle engine oil pressure reaches a certain value and the engine starter motor is de-energised.
    Type: Grant
    Filed: April 8, 1974
    Date of Patent: January 27, 1976
    Assignee: Rolls-Royce Motors Limited
    Inventors: Derrick Coulson, John C. Coyle