Patents by Inventor Jonathan D. Northup

Jonathan D. Northup 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).

  • Variable speed drive system
    Patent number: 9054625
    Abstract: This disclosure relates to a variable speed drive for driving a single phase motor. The variable speed drive generates enhanced motor voltages including harmonic components configured to reduce torque pulsations.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: June 9, 2015
    Assignee: Franklin Electric Co., Inc.
    Inventors: James H. Spreen, Jonathan D. Northup
  • Adaptive flux control drive
    Patent number: 8664903
    Abstract: This disclosure relates to a variable speed drive for driving a motor having a starting circuit. The variable speed drive adaptively generates motor voltages to reduce the likelihood of starting circuit intrusions.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 4, 2014
    Assignee: Franklin Electric Company, Inc.
    Inventor: Jonathan D. Northup
  • VARIABLE SPEED DRIVE SYSTEM
    Publication number: 20130002187
    Abstract: This disclosure relates to a variable speed drive for driving a single phase motor. The variable speed drive generates enhanced motor voltages including harmonic components configured to reduce torque pulsations.
    Type: Application
    Filed: March 11, 2011
    Publication date: January 3, 2013
    Applicant: FRANKLIN ELECTRIC COMPANY, INC.
    Inventors: James H. Spreen, Jonathan D. Northup
  • ADAPTIVE FLUX CONTROL DRIVE
    Publication number: 20120326640
    Abstract: This disclosure relates to a variable speed drive for driving a motor having a starting circuit. The variable speed drive adaptively generates motor voltages to reduce the likelihood of starting circuit intrusions.
    Type: Application
    Filed: June 27, 2011
    Publication date: December 27, 2012
    Applicant: FRANKLIN ELECTRIC COMPANY, INC.
    Inventor: Jonathan D. Northup