Patents by Inventor Zackary P. Sipper

Zackary P. Sipper 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).

  • Adaptive engine speed control system
    Patent number: 11547042
    Abstract: An adaptive engine speed control system for a grass mowing machine having an internal combustion engine, a hydrostatic traction drive circuit and a hydraulic mowing circuit for operating a plurality of cutting units. A controller provides a traction feedback output signal if the grass mowing machine is moving at an actual ground speed that is below a pedal based desired ground speed, and uses the traction feedback output signal to command the internal combustion engine to an increased speed above a pedal based engine speed control range.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: January 10, 2023
    Assignee: DEERE & COMPANY
    Inventors: Zackary P. Sipper, Jacob C. Kallara, Brent G. Rinholm
  • ADAPTIVE ENGINE SPEED CONTROL SYSTEM
    Publication number: 20210259150
    Abstract: An adaptive engine speed control system for a grass mowing machine having an internal combustion engine, a hydrostatic traction drive circuit and a hydraulic mowing circuit for operating a plurality of cutting units. A controller provides a traction feedback output signal if the grass mowing machine is moving at an actual ground speed that is below a pedal based desired ground speed, and uses the traction feedback output signal to command the internal combustion engine to an increased speed above a pedal based engine speed control range.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 26, 2021
    Inventors: ZACKARY P. SIPPER, JACOB C. KALLARA, BRENT G. RINHOLM
  • ADJUSTABLE LIFT RATE SYSTEM
    Publication number: 20210259154
    Abstract: An adjustable lift rate system on a grass mowing machine such as a riding greensmower having a lift and lower circuit including a plurality of hydraulic lift cylinders to lift and lower a plurality of cutting units, and a controller providing a current to a proportional solenoid valve to bypass the hydraulic lift cylinders. An operator control may be used to adjust the current to the proportional solenoid valve to adjust the lift and lower rate of the cutting units.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 26, 2021
    Inventors: BRENT G. RINHOLM, ZACKARY P. SIPPER
  • Aerator with active turf calibration of ground sensor
    Patent number: 9510497
    Abstract: An aerator with active turf calibration of a ground sensor that provides signals to a controller relating to changes in slope of a ground surface. The controller adjusts the position of a coring head based on signals from the ground sensor. The controller determines an offset from a neutral position of the ground sensor based on signals from the ground sensor on a flat surface during aeration compared to the neutral position of the ground sensor on a flat surface from static calibration.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: December 6, 2016
    Assignee: DEERE & COMPANY
    Inventors: Loren A Zabel, Marquez Perkins, Stanley K. Hall, Zackary P Sipper
  • AERATOR WITH ACTIVE TURF CALIBRATION OF GROUND SENSOR
    Publication number: 20150216101
    Abstract: An aerator with active turf calibration of a ground sensor that provides signals to a controller relating to changes in slope of a ground surface. The controller adjusts the position of a coring head based on signals from the ground sensor. The controller determines an offset from a neutral position of the ground sensor based on signals from the ground sensor on a flat surface during aeration compared to the neutral position of the ground sensor on a flat surface from static calibration.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 6, 2015
    Applicant: DEERE & COMPANY
    Inventors: Loren A. Zabel, Marquez Perkins, Stanley K. Hall, Zackary P. Sipper