Patents by Inventor Paul Schufeldt

Paul Schufeldt 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).

  • Publication number: 20070272904
    Abstract: A heavy duty wheeled vehicle for an industrial environment is electrically driven by one or more switched reluctance motor traction drive system connected to the wheels. The switched reluctance motors are powered by an electrical generator that is driven by an engine, such as a diesel engine, which may run at a substantially constant RPM. A digital control system provides operator displays and controls power conversion from the generator, as well as providing maintenance and control functions for the switched reluctance motors. A heavy-duty hoisting apparatus electrically drives a hoisting mechanism using an SR motor, providing power for lifting a load. The heavy-duty hoisting apparatus may include an engine and generator or provide power to the SR motor from an external source.
    Type: Application
    Filed: March 6, 2007
    Publication date: November 29, 2007
    Applicant: LeTourneau Technologies, Inc.
    Inventors: Ronald Johnston, Dwight Baker, Nelson Stoldt, Paul Schufeldt, Peter Bradley
  • Publication number: 20070193794
    Abstract: A heavy duty wheeled vehicle for an industrial environment is electrically driven by one or more switched reluctance motor traction drive system connected to the wheels. The switched reluctance motors are powered by an electrical generator that is driven by an engine, such as a diesel engine, which may run at a substantially constant RPM. A digital control system provides operator displays and controls power conversion from the generator, as well as providing maintenance and control functions for the switched reluctance motors. A heavy-duty hoisting apparatus electrically drives a hoisting mechanism using an SR motor, providing power for lifting a load. The heavy-duty hoisting apparatus may include an engine and generator or provide power to the SR motor from an external source.
    Type: Application
    Filed: March 6, 2007
    Publication date: August 23, 2007
    Applicant: LeTourneau Technologies, Inc.
    Inventors: Ronald Johnston, Dwight Baker, Nelson Stoldt, Paul Schufeldt, Peter Bradley
  • Publication number: 20050072608
    Abstract: A heavy duty wheeled vehicle for an industrial environment is electrically driven by one or more switched reluctance motor traction drive system connected to the wheels. The switched reluctance motors are powered by an electrical generator that is driven by an engine, such as a diesel engine, which may run at a substantially constant RPM. A digital control system provides operator displays and controls power conversion from the generator, as well as providing maintenance and control functions for the switched reluctance motors. A heavy-duty hoisting apparatus electrically drives a hoisting mechanism using an SR motor, providing power for lifting a load. The heavy-duty hoisting apparatus may include an engine and generator or provide power to the SR motor from an external source.
    Type: Application
    Filed: October 3, 2003
    Publication date: April 7, 2005
    Inventors: Ronald Johnston, Dwight Baker, Nelson Stoldt, Paul Schufeldt, Peter Bradley