Patents by Inventor John B. Phoenix

John B. Phoenix 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).

  • Microprocessor based systems providing simulated low voltage conditions for testing reset circuits
    Patent number: 5412794
    Abstract: A microprocessor system having two microprocessors, each of which has its own reset circuit, and a circuit being provided which detects under-voltage in the system supply voltage, each of said microprocessors having circuitry associated with it for inducing a simulated low voltage condition on the reset circuit of the other microprocessor to test said under-voltage detection circuit and to measure the resulting reset period generated.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: May 2, 1995
    Assignee: Lucas Industries public limited company
    Inventors: John B. Phoenix, Kenneth Vincent, David C. Hurst
  • Variable valve timing
    Patent number: 5361736
    Abstract: A means of varying both the opening and closing angle of internal combustion engine valves by means of a mechanism which varies the instantaneous phase of the camshaft with respect to the phase of the crankshaft so causing the cam to spend a longer or shorter time than nominal in contact with the valve tappet in response to a chosen control programme.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: November 8, 1994
    Inventors: Lancelot Phoenix, John B. Phoenix
  • Variable valve timing
    Patent number: 5329894
    Abstract: A means of varying both the opening and closing angle of internal combustion engine cam-operated valves by means of a mechanism which responds to the torque applied to the camshaft by the valve springs in such a way that the opening angle of the valves is retarded and the closing angle advanced and in which a means of inhibiting this operation can be incorporated.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: July 19, 1994
    Inventors: John B. Phoenix, Lancelot Phoenix