Patents by Inventor Elzi Pettovello

Elzi Pettovello 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).

  • Patent number: 4608482
    Abstract: An improved welding power supply control circuit is disclosed. The control circuit, which incorporates a microprocessor, simultaneously adjusts the power supplied to a welding electrode and the speed of the electrode, in accordance with a selected power/speed relationship table or curve. The power/speed relationship of a selected table can be further modified manually, as by a potentiometer, to optimize the weld. Feedback circuitry senses the frequency of the weld and the weld voltage, to regulate the power and to modify the slope of the voltage/current output curve, respectively.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: August 26, 1986
    Inventors: Ron Cox, Elzi Pettovello
  • Patent number: 4534499
    Abstract: The specification describes a mechanism for controllably advancing material such as wire to a work station. The mechanism includes two frusto-conical shaped wheels mounted in a face to face relationship so that the wire is pulled through the nip formed by a rotation of the wheels. One wheel has an associated bias adjustment means which is adapted to vary the pressure exerted by one wheel on the other. A flexible wire guide, and an adjustable spool holder form part of the mechanism.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: August 13, 1985
    Inventors: Ron Cox, Elzi Pettovello
  • Patent number: 4510373
    Abstract: The specification describes a control unit for use with the welding gun of an arc welding assembly. A single adjustable means in the welding gun effects changes in the control unit to regulate welding voltage as well as the speed at which the electrode wire is fed to the welding site.
    Type: Grant
    Filed: February 17, 1984
    Date of Patent: April 9, 1985
    Inventors: Ron Cox, Elzi Pettovello