Patents by Inventor David Donald Miller

David Donald Miller 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).

  • Modular soft starter
    Patent number: 8289113
    Abstract: Modular soft starters are disclosed having a plurality of soft starter modules with stacked SCRs and heat sinks for accommodating a single phase of a three phase motor, where the modules may be connected serially for starting each phase of a higher voltage motor, and where the modules can be mounted in a cabinet in a variety of different orientations to facilitate optimized cabinet space utilization.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: October 16, 2012
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: David Donald Miller, David Scott S. Maclennan
  • MODULAR SOFT STARTER
    Publication number: 20110116241
    Abstract: Modular soft starters are disclosed having a plurality of soft starter modules with stacked SCRs and heat sinks for accommodating a single phase of a three phase motor, where the modules may be connected serially for starting each phase of a higher voltage motor, and where the modules can be mounted in a cabinet in a variety of different orientations to facilitate optimized cabinet space utilization.
    Type: Application
    Filed: January 31, 2011
    Publication date: May 19, 2011
    Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
    Inventors: David Donald Miller, David Scott S. Maclennan
  • Modular soft starter
    Patent number: 7898374
    Abstract: Modular soft starters are disclosed having a plurality of soft starter modules with stacked SCRs and heat sinks for accommodating a single phase of a three phase motor, where the modules may be connected serially for starting each phase of a higher voltage motor, and where the modules can be mounted in a cabinet in a variety of different orientations to facilitate optimized cabinet space utilization.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: March 1, 2011
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: David Donald Miller, David Scott S. Maclennan
  • Methods and apparatus for flux dispersal in link inductor
    Patent number: 7692524
    Abstract: Inductors are described for motor drives or other power converters having an inductor connected in a switching circuit, with one or more conductive shields positioned between an inductor coil winding and a flux-carrying inductor core leg to redirect flux away from the coil winding so as to inhibit heating of the coil.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: April 6, 2010
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: David Donald Miller, Loris Michael Dalfuoco, Yuan Xiao, Catalin Florin Gemanaru
  • MODULAR SOFT STARTER
    Publication number: 20100073885
    Abstract: Modular soft starters are disclosed having a plurality of soft starter modules with stacked SCRs and heat sinks for accommodating a single phase of a three phase motor, where the modules may be connected serially for starting each phase of a higher voltage motor, and where the modules can be mounted in a cabinet in a variety of different orientations to facilitate optimized cabinet space utilization.
    Type: Application
    Filed: November 30, 2009
    Publication date: March 25, 2010
    Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
    Inventors: David Donald Miller, David Scott S. Maclennan
  • MODULAR SOFT STARTER
    Publication number: 20080164831
    Abstract: Modular soft starters are disclosed having a plurality of soft starter modules with stacked SCRs and heat sinks for accommodating a single phase of a three phase motor, where the modules may be connected serially for starting each phase of a higher voltage motor, and where the modules can be mounted in a cabinet in a variety of different orientations to facilitate optimized cabinet space utilization.
    Type: Application
    Filed: May 3, 2007
    Publication date: July 10, 2008
    Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
    Inventors: David Donald Miller, David Scott S. Maclennan
  • METHODS AND APPARATUS FOR FLUX DISPERSAL IN LINK INDUCTOR
    Publication number: 20080007385
    Abstract: Inductors are described for motor drives or other power converters having an inductor connected in a switching circuit, with one or more conductive shields positioned between an inductor coil winding and a flux-carrying inductor core leg to redirect flux away from the coil winding so as to inhibit heating of the coil.
    Type: Application
    Filed: July 10, 2006
    Publication date: January 10, 2008
    Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
    Inventors: David Donald Miller, Loris Michael Dalfuoco, Yuan Xiao, Catalin Florin Gemanaru