Patents by Inventor John B. Lopacki

John B. Lopacki 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).

  • Electrical resistor structure
    Patent number: 4470034
    Abstract: An electrical resistor is described which is comprised of a resistor core having at least one electrically conductive end cap mounted thereon. The end cap is in electrical contact with the butt end portion of the core and electrically insulated from the side, or periphery, portion of the core member. The end cap has an outward-extending radial portion thereon, positioned contiguous to the junction between the core and the cap.The present electrical resistors are produced by forming a resistive core member of a conductor in a dielectric matrix material and an end cap, having an internal contact surface and a receiving portion. The receiving portion is larger than the outside diameter of the core. The end cap has an outward-extending radial position adjacent the receiving portion. The end cap is mounted on the core to place the butt end portion of the core in electrical contact with the internal contact surface of the end cap, but otherwise spacedly within the end cap.
    Type: Grant
    Filed: August 23, 1983
    Date of Patent: September 4, 1984
    Assignee: Kennecott Corporation
    Inventors: John B. Lopacki, Harry R. Emes
  • Method of terminating carbon ceramic composition resistors for use in high peak power and peak voltage energy dissipation application
    Patent number: 4417389
    Abstract: An electrical resistor is described which is comprised of a resistor core having at least one electrically conductive end cap mounted thereon. The end cap is in electrical contact with the butt end portion of the core and electrically insulated from the side, or periphery, portion of the core member. The end cap has an outward-extending radial portion thereon, positioned contiguous to the junction between the core and the cap.The present electrical resistors are produced by forming a resistive core member of a conductor in a dielectric matrix material and an end cap, having an internal contact surface and a receiving portion. The receiving portion is larger than the outside diameter of the core. The end cap has an outward-extending radial position adjacent the receiving portion. The end cap is mounted on the core to place the butt end portion of the core in electrical contact with the internal contact surface of the end cap, but otherwise spacedly within the end cap.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: November 29, 1983
    Assignee: Kennecott Corporation
    Inventors: John B. Lopacki, Harry R. Emes