Patents by Inventor Michael O. Lucas

Michael O. Lucas 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).

  • Apparatus for continued operation of an electric motor during an interruption in input power
    Patent number: 8779709
    Abstract: An apparatus is provided for controlling operation of an electric motor through use of an additional power storage arrangement connected across the DC busses of a motor drive and controlling the speed of the motor. The additional power storage arrangement includes an additional capacitor arrangement and a rate limiting arrangement in a series circuit relationship with one another.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: July 15, 2014
    Assignee: Unico, Inc.
    Inventors: Michael O. Lucas, Rick L. Tennessen, Harry W. Schulz, William S. Hammel, James J. Sewell
  • Induction motor torque control in a pumping system
    Patent number: 8384318
    Abstract: A system and method are provided for controlling the speed of a motor driving a load that is electrically connected to a generator driven by an engine, through use of a first control feedback loop configured to control the rotor flux of the motor by controlling the field excitation of the generator, and a second control feedback loop configured to control the speed of the motor by controlling the throttle position of the engine.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: February 26, 2013
    Assignee: Unico, Inc.
    Inventors: Thomas L. Beck, Michael D. Dry, Mark E. Garlow, Michael O. Lucas, Michael A. MacDonald, Ronald G. Peterson
  • Apparatus for Continued Operation of an Electric Motor During an Interruption in Input Power
    Publication number: 20130043813
    Abstract: An apparatus is provided for controlling operation of an electric motor through use of an additional power storage arrangement connected across the DC busses of a motor drive and controlling the speed of the motor. The additional power storage arrangement includes an additional capacitor arrangement and a rate limiting arrangement in a series circuit relationship with one another.
    Type: Application
    Filed: August 2, 2012
    Publication date: February 21, 2013
    Inventors: Michael O. Lucas, Rick L. Tennessen, Harry W. Schulz, William S. Hammel, James J. Sewell
  • INDUCTION MOTOR TORQUE CONTROL IN A PUMPING SYSTEM
    Publication number: 20120091931
    Abstract: A system and method are provided for controlling the speed of a motor driving a load that is electrically connected to a generator driven by an engine, through use of a first control feedback loop configured to control the rotor flux of the motor by controlling the field excitation of the generator, and a second control feedback loop configured to control the speed of the motor by controlling the throttle position of the engine.
    Type: Application
    Filed: December 19, 2011
    Publication date: April 19, 2012
    Applicant: UNICO, INC.
    Inventors: Thomas L. Beck, Michael D. Dry, Mark E. Garlow, Michael O. Lucas, Michael A. MacDonald, Ronald G. Peterson
  • Induction motor torque control in a pumping system
    Patent number: 8080950
    Abstract: A system and method are provided for controlling the speed of a motor driving a load that is electrically connected to a generator driven by an engine, through use of a first control feedback loop configured to control the rotor flux of the motor by controlling the field excitation of the generator, and a second control feedback loop configured to control the speed of the motor by controlling the throttle position of the engine.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: December 20, 2011
    Assignee: Unico, Inc.
    Inventors: Thomas L. Beck, Michael D. Dry, Mark E. Garlow, Michael O. Lucas, Michael A. MacDonald, Ronald G. Peterson
  • INDUCTION MOTOR TORQUE CONTROL IN A PUMPING SYSTEM
    Publication number: 20100231146
    Abstract: A system and method are provided for controlling the speed of a motor driving a load that is electrically connected to a generator driven by an engine, through use of a first control feedback loop configured to control the rotor flux of the motor by controlling the field excitation of the generator, and a second control feedback loop configured to control the speed of the motor by controlling the throttle position of the engine.
    Type: Application
    Filed: March 15, 2010
    Publication date: September 16, 2010
    Applicant: UNICO, INC.
    Inventors: Thomas L. Beck, Michael D. Dry, Mark E. Garlow, Michael O. Lucas, Michael A. MacDonald, Ronald G. Peterson