Patents by Inventor Steve A. KRANE

Steve A. KRANE 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).

  • Variable displacement hydraulic pump system with over-temperature prevention
    Patent number: 12247555
    Abstract: A pump system including a prevention mechanism for preventing excessive fluid temperature buildup of system fluid. The overheat prevention mechanism includes a thermally-responsive control component (130) made with a thermally-responsive material. The thermally-responsive control component is located in the pump system (112) such that the thermally-responsive material is in thermal communication with the system fluid for effecting a change in temperature of the thermally-responsive material. The thermally-responsive material is configured to have an activation temperature that is a predefined amount less than a maximum operating temperature of the system fluid. The thermally-responsive control component is configured to cooperate with a pump control mechanism in the system to decrease pump output pressure in response to the thermally-responsive material being heated by the fluid to a temperature that is equal to or greater than the activation temperature of the thermally-responsive material.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: March 11, 2025
    Assignee: Parker-Hannifin Corporation
    Inventors: Steve A. Krane, Dean R. Pollee, Evan W. Anderson, Daniel P. Rapin
  • PUMP SYSTEM WITH OVER-TEMPERATURE PREVENTION
    Publication number: 20220268272
    Abstract: A pump system including a prevention mechanism for preventing excessive fluid temperature buildup of system fluid. The overheat prevention mechanism includes a thermally-responsive control component (130) made with a thermally-responsive material. The thermally-responsive control component is located in the pump system (112) such that the thermally-responsive material is in thermal communication with the system fluid for effecting a change in temperature of the thermally-responsive material. The thermally-responsive material is configured to have an activation temperature that is a predefined amount less than a maximum operating temperature of the system fluid. The thermally-responsive control component is configured to cooperate with a pump control mechanism in the system to decrease pump output pressure in response to the thermally-responsive material being heated by the fluid to a temperature that is equal to or greater than the activation temperature of the thermally-responsive material.
    Type: Application
    Filed: September 17, 2020
    Publication date: August 25, 2022
    Inventors: Steve A. KRANE, Dean R. POLLEE, Evan W. ANDERSON, Daniel P. RAPIN