Patents by Inventor Marty Carpenter

Marty Carpenter 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).

  • Publication number: 20240110365
    Abstract: A power machine can include a control device and a hydraulic circuit that can include a hydraulic pump in communication with a hydraulic motor that is configured to operate with infinitely variable displacement. The control device can be configured to determine a control value based on a commanded travel speed for the power machine and a pressure in the hydraulic circuit, and control a run-time displacement of the hydraulic motor based upon the determined control value.
    Type: Application
    Filed: December 11, 2023
    Publication date: April 4, 2024
    Inventors: Charles Young, Marty Carpenter, Scott Becker, Douglas Kallas, Matthew Kaldor, Eric Zabel, Boston Zachmann
  • Publication number: 20240052596
    Abstract: A hydraulic work system can include a continuously variable displacement hydraulic pump that is powered by an engine and is in communication with a hydraulic actuator. A run-time displacement of the hydraulic pump for movement of the hydraulic actuator can be controlled based on a speed of the engine.
    Type: Application
    Filed: October 25, 2023
    Publication date: February 15, 2024
    Inventors: Charles Young, Marty Carpenter, Scott Becker, Douglas Kallas, Matthew Kaldor, Eric Zabel
  • Patent number: 11866912
    Abstract: A power machine can include a hydraulic drive system that includes an infinitely variable hydraulic drive motor. A run-time displacement of the hydraulic motor can be adjusted based on commanded travel speed or based on a output torque. In some case, the run-time displacement can be selected from one of a plurality of displacement ranges, such as a high range and a low range.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: January 9, 2024
    Assignee: Doosan Bobcat North America, Inc.
    Inventors: Charles Young, Marty Carpenter, Scott Becker, Douglas Kallas, Matthew Kaldor, Eric Zabel, Boston Zachmann
  • Patent number: 11834810
    Abstract: A hydraulic work system can include a continuously variable displacement hydraulic pump that is powered by an engine and is in communication with a hydraulic actuator. A run-time displacement of the hydraulic pump for movement of the hydraulic actuator can be controlled based on a speed of the engine.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: December 5, 2023
    Assignee: CLARK EQUIPMENT COMPANY
    Inventors: Charles Young, Marty Carpenter, Scott Becker, Douglas Kallas, Matthew Kaldor, Eric Zabel
  • Publication number: 20230071137
    Abstract: A hydraulic work system can include a continuously variable displacement hydraulic pump that is powered by an engine and is in communication with a hydraulic actuator. A run-time displacement of the hydraulic pump for movement of the hydraulic actuator can be controlled based on a speed of the engine.
    Type: Application
    Filed: September 20, 2022
    Publication date: March 9, 2023
    Inventors: Charles Young, Marty Carpenter, Scott Becker, Douglas Kallas, Matthew Kaldor, Eric Zabel
  • Patent number: 11447930
    Abstract: A hydraulic work system can include a continuously variable displacement hydraulic pump that is powered by an engine and is in communication with a hydraulic actuator. A run-time displacement of the hydraulic pump for movement of the hydraulic actuator can be controlled based on a speed of the engine.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: September 20, 2022
    Assignee: CLARK EQUIPMENT COMPANY
    Inventors: Charles Young, Marty Carpenter, Scott Becker, Douglas Kallas, Matthew Kaldor, Eric Zabel
  • Publication number: 20210087792
    Abstract: A power machine can include a hydraulic drive system that includes an infinitely variable hydraulic drive motor. A run-time displacement of the hydraulic motor can be adjusted based on commanded travel speed or based on a output torque. In some case, the run-time displacement can be selected from one of a plurality of displacement ranges, such as a high range and a low range.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 25, 2021
    Inventors: Charles Young, Marty Carpenter, Scott Becker, Douglas Kallas, Matthew Kaldor, Eric Zabel, Boston Zachmann
  • Publication number: 20210087793
    Abstract: A hydraulic work system can include a continuously variable displacement hydraulic pump that is powered by an engine and is in communication with a hydraulic actuator. A run-time displacement of the hydraulic pump for movement of the hydraulic actuator can be controlled based on a speed of the engine.
    Type: Application
    Filed: September 24, 2020
    Publication date: March 25, 2021
    Inventors: Charles Young, Marty Carpenter, Scott Becker, Douglas Kallas, Matthew Kaldor, Eric Zabel
  • Patent number: 10597846
    Abstract: A method of controlling a lift arm actuator and a tilt actuator to control positioning of an implement carrier coupled to a lift arm of a power machine. An activation signal is received from an enabling input device. A lift arm control signal is received from a lift arm control input commanding movement of the lift arm. The lift arm actuator is controlled responsive to receipt of both of the activation signal and the lift arm control signal to move the lift arm to a target lift arm position and to move the implement carrier to or maintain the implement carrier at a target implement carrier orientation relative to a gravitational direction.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: March 24, 2020
    Assignee: Clark Equipment Compmany
    Inventors: Kevin J. Zent, Trevor W. Krause, Jonathan J. Roehrl, Marty Carpenter
  • Publication number: 20180238017
    Abstract: A method of controlling a lift arm actuator and a tilt actuator to control positioning of an implement carrier coupled to a lift arm of a power machine. An activation signal is received from an enabling input device. A lift arm control signal is received from a lift arm control input commanding movement of the lift arm. The lift arm actuator is controlled responsive to receipt of both of the activation signal and the lift arm control signal to move the lift arm to a target lift arm position and to move the implement carrier to or maintain the implement carrier at a target implement carrier orientation relative to a gravitational direction.
    Type: Application
    Filed: April 20, 2018
    Publication date: August 23, 2018
    Inventors: Kevin J. Zent, Trevor W. Krause, Jonathan J. Roehrl, Marty Carpenter
  • Patent number: 9951494
    Abstract: A method of controlling a lift arm actuator and a tilt actuator to control positioning of an implement carrier coupled to a lift arm of a power machine. An activation signal is received from an enabling input device. A lift arm control signal is received from a lift arm control input commanding movement of the lift arm. The lift arm actuator is controlled responsive to receipt of both of the activation signal and the lift arm control signal to move the lift arm to a target lift arm position and to move the implement carrier to or maintain the implement carrier at a target implement carrier orientation relative to a gravitational direction.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: April 24, 2018
    Assignee: Clark Equipment Company
    Inventors: Kevin J. Zent, Trevor W. Krause, Jonathan J. Roehrl, Marty Carpenter
  • Publication number: 20160319509
    Abstract: A method of controlling a lift arm actuator and a tilt actuator to control positioning of an implement carrier coupled to a lift arm of a power machine. An activation signal is received from an enabling input device. A lift arm control signal is received from a lift arm control input commanding movement of the lift arm. The lift arm actuator is controlled responsive to receipt of both of the activation signal and the lift arm control signal to move the lift arm to a target lift arm position and to move the implement carrier to or maintain the implement carrier at a target implement carrier orientation relative to a gravitational direction.
    Type: Application
    Filed: April 29, 2016
    Publication date: November 3, 2016
    Inventors: Kevin J. Zent, Trevor W. Krause, Jonathan J. Roehrl, Marty Carpenter