Patents by Inventor Raymond E. Stephens, Jr.

Raymond E. Stephens, Jr. 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).

  • Evaporative roof cooling system
    Patent number: 4064706
    Abstract: A control device for evaporative roof cooling systems in which a lack of moisture on a sample surface actuates a valve to spray water onto a roof. The lack of moisture opens the circuit between two spaced electrodes located on the sample surface, causing a control relay to activate a water spray system by supplying a voltage to one or more solenoid water valves.
    Type: Grant
    Filed: March 3, 1977
    Date of Patent: December 27, 1977
    Inventor: Raymond E. Stephens, Jr.