Patents by Inventor Mark M. Lulling

Mark M. Lulling 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).

  • System and method for timed insertion of a phase shift capacitor upon powering a split capacitor electrical motor
    Patent number: 9479104
    Abstract: A power circuit is configured with mostly passive electrical components to connect a phase shift capacitor to a phase shift winding of a PSC motor selectively. The power circuit includes a timing circuit, a switching circuit, and a triac having a first anode connected to the second capacitor and a second anode connected to electrical ground. The timing circuit has a plurality of passive electrical components and a single active comparator configured to generate a signal indicative of an expiration of a predetermined time period after application of a line voltage to the motor. The switching circuit has a plurality of passive electrical components and a single active switch, which generates a signal to operate the triac to electrically connect the second capacitor to the second winding during the predetermined time period and to disconnect electrically the second capacitor from the second winding in response to a signal generated by the timing circuit indicating the predetermined time period has expired.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: October 25, 2016
    Assignee: Nidec Motor Corporation
    Inventors: Robert K. Hollenbeck, Bruce C. Ley, Mark M. Lulling
  • SYSTEM AND METHOD FOR TIMED INSERTION OF A PHASE SHIFT CAPACITOR UPON POWERING A SPLIT CAPACITOR ELECTRICAL MOTOR
    Publication number: 20160308479
    Abstract: A power circuit is configured with mostly passive electrical components to connect a phase shift capacitor to a phase shift winding of a PSC motor selectively. The power circuit includes a timing circuit, a switching circuit, and a triac having a first anode connected to the second capacitor and a second anode connected to electrical ground. The timing circuit has a plurality of passive electrical components and a single active comparator configured to generate a signal indicative of an expiration of a predetermined time period after application of a line voltage to the motor. The switching circuit has a plurality of passive electrical components and a single active switch, which generates a signal to operate the triac to electrically connect the second capacitor to the second winding during the predetermined time period and to disconnect electrically the second capacitor from the second winding in response to a signal generated by the timing circuit indicating the predetermined time period has expired.
    Type: Application
    Filed: April 14, 2015
    Publication date: October 20, 2016
    Inventors: Robert K. Hollenbeck, Bruce C. Ley, Mark M. Lulling