Patents by Inventor Zachary J. Wernlund

Zachary J. Wernlund 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).

  • Cold Planer Implement Drive Train Protection System
    Publication number: 20160168807
    Abstract: A method of protecting a drive train from sudden shocks in a machine having a rotatably-mounted implement selectively couplable to a driver by the drive train includes sensing the movement of teeth of an annular toothed surface of the input pulley to monitor the rotational speed of the input pulley, and disengaging the clutch if a programmable controller identifies at least one of a rapid deceleration of a speed of the input pulley, and a difference between the speed of the input pulley, and a calculated speed provided to the input pulley by the input belt from the driver.
    Type: Application
    Filed: December 16, 2014
    Publication date: June 16, 2016
    Applicant: CATERPILLAR PAVING PRODUCTS INC.
    Inventors: Benjamin T. Schafer, Daniel H. Killion, Zachary J. Wernlund
  • DC to AC converter that generates the sine wave from the pulse width modulated signal
    Patent number: 8345451
    Abstract: A method and apparatus for converting DC electricity to AC electricity, the AC electricity having a sine wave shape. DC electricity is supplied to a pulse width modulator. A pulse width modulated signal is formed from the DC electricity, the pulse width modulated signal comprising a plurality of pulses, each pulse having a duration representing an amplitude of the sine wave during an interval of the sine wave represented by the pulse, the pulse width modulated signal comprising a plurality of pulses (or a pulse train) during one sine wave period. The sine wave is generated from the pulse width modulated signal, values of the sine wave during successive sine wave intervals responsive to the duration of the pulse that represents the sine wave interval.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: January 1, 2013
    Inventors: James V. Wernlund, Roger F. Wernlund, Zachary J. Wernlund, Christian J. Wernlund
  • DC TO AC CONVERTER
    Publication number: 20110157937
    Abstract: A method and apparatus for converting DC electricity to AC electricity, the AC electricity having a sine wave shape. DC electricity is supplied to a pulse width modulator. A pulse width modulated signal is formed from the DC electricity, the pulse width modulated signal comprising a plurality of pulses, each pulse having a duration representing an amplitude of the sine wave during an interval of the sine wave represented by the pulse, the pulse width modulated signal comprising a plurality of pulses (or a pulse train) during one sine wave period. The sine wave is generated from the pulse width modulated signal, values of the sine wave during successive sine wave intervals responsive to the duration of the pulse that represents the sine wave interval.
    Type: Application
    Filed: November 8, 2010
    Publication date: June 30, 2011
    Inventors: James V. Wernlund, Roger F. Wernlund, Zachary J. Wernlund, Christian J. Wernlund