Patents by Inventor Jeffrey Gerald Hopman

Jeffrey Gerald Hopman 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 circuit assembly for high-power electronics
    Patent number: 7903417
    Abstract: An electrical circuit assembly includes an electrical circuit substrate having a first side; a heat sink including a metal base plate having a first side and a second side, and a plurality of fins extending from the second side; and a thermally conductive and electrically insulating adhesive directly interconnecting at least a portion of the first side of the electrical circuit substrate with the first side of the base plate.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: March 8, 2011
    Assignee: Deere & Company
    Inventors: Ronnie Dean Stahlhut, Clement Vanden Godbold, Jeffrey Gerald Hopman, Kartheek Karna, James Arthur Springer, John Lopes Alves, Lise Alves, legal representative
  • ELECTRICAL CIRCUIT ASSEMBLY FOR HIGH-POWER ELECTRONICS
    Publication number: 20080247139
    Abstract: An electrical circuit assembly includes an electrical circuit substrate having a first side; a heat sink including a metal base plate having a first side and a second side, and a plurality of fins extending from the second side; and a thermally conductive and electrically insulating adhesive directly interconnecting at least a portion of the first side of the electrical circuit substrate with the first side of the base plate.
    Type: Application
    Filed: October 9, 2007
    Publication date: October 9, 2008
    Inventors: Ronnie D. Stahlhut, Clement Vanden Godbold, Jeffrey Gerald Hopman, Kartheek Karna, James Arthur Springer, John Lopes Alves, Lise Alves
  • Electrical circuit assembly for high-power electronics
    Publication number: 20080084671
    Abstract: An electrical circuit assembly includes a flexible electrical circuit having a first side; a heat sink including a metal base plate having a first side and a second side, and a plurality of fins extending from the second side; and a thermally conductive and electrically insulating adhesive directly interconnecting at least a portion of the first side of the flexible electrical circuit with the first side of the base plate.
    Type: Application
    Filed: October 10, 2006
    Publication date: April 10, 2008
    Inventors: Ronnie Dean Stahlhut, Clement Vanden Godbold, Jeffrey Gerald Hopman, Kartheek Karna, James Arthur Springer, John Lopes Alves, Lise Alves
  • High current sealed connection system
    Patent number: 7297034
    Abstract: A circuit board assembly including a circuit board having at least one conductive element attached thereto and at least one surface mount stud carrier mounted on the circuit board and electrically connected to the at least one conductive element.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: November 20, 2007
    Assignee: Deere & Company
    Inventors: Andrew Dean Wieland, Jeffrey Gerald Hopman
  • System and method for detecting motor coil-to-coil faults
    Patent number: 7126368
    Abstract: A system and method detects coil-to-coil faults in an electric motor having a plurality of coils. The method includes applying a square wave signal to a first coil of the motor, connecting a capacitor and a resistor between ground potential and a second coil of the motor, applying the coil output voltage to an amplifying and peak detecting circuit, applying an output of the amplifying and peak detecting circuit to the input of the control unit and, after a delay period, generating a motor fault signal if the coil output voltage is below a predetermined threshold. The square wave signal is amplified by a circuit which prevents transmission of voltage signals from the coils to the output of the control unit during normal operation of the motor.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: October 24, 2006
    Assignee: Deere & Company
    Inventors: John David Paulson, Brian Frederick Boeshans, Jeffrey Gerald Hopman, Robert Boyd Shaw