Patents by Inventor Dawood A. Ali

Dawood A. Ali 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).

  • Controlling an electrically actuated refrigerant expansion valve
    Patent number: 5546756
    Abstract: A control system for generating a pulse width modulated control signal for an electrically operated refrigerant valve. The controller receives inputs from evaporator inlet and outlet temperature sensors (T.sub.in, T.sub.out) and "fuzzy" logic to compute the discrete value of pulse width change needed, based upon the difference .DELTA.T=T.sub.out -T.sub.in and the time rate of change of .DELTA.T.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: August 20, 1996
    Assignee: Eaton Corporation
    Inventor: Dawood A. Ali