Patents by Inventor Steve P. Laumer

Steve P. Laumer 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).

  • Hydraulic actuator control system
    Patent number: 7831352
    Abstract: A system for controlling motion of a hydraulic actuator during a portion of its range of motion is described, including a sensor on the hydraulic actuator for providing a signal indicating that the actuator is near a portion of its range of motion, and a pneumatic control valve that is configured to selectively modify a pressurized air control signal to in turn restrict flow of pressurized hydraulic fluid to the hydraulic actuator. The hydraulic actuator control system further includes an electronic controller for controlling the pneumatic control valve in response to a signal from the sensor. The hydraulic actuator control system thereby slows the motion of the hydraulic actuator near the portion of its range of motion.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: November 9, 2010
    Assignee: The Hartfiel Company
    Inventors: Steve P. Laumer, Gary Lee Lagro
  • Hydraulic Actuator Control System
    Publication number: 20080228323
    Abstract: A system for controlling motion of a hydraulic actuator during a portion of its range of motion is described, including a sensor on the hydraulic actuator for providing a signal indicating that the actuator is near a portion of its range of motion, and a pneumatic control valve that is configured to selectively modify a pressurized air control signal to in turn restrict flow of pressurized hydraulic fluid to the hydraulic actuator. The hydraulic actuator control system further includes an electronic controller for controlling the pneumatic control valve in response to a signal from the sensor. The hydraulic actuator control system thereby slows the motion of the hydraulic actuator near the portion of its range of motion.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 18, 2008
    Applicant: THE HARTFIEL COMPANY
    Inventors: Steve P. Laumer, Gary Lee Lagro