Patents by Inventor Stephen D. Cromer

Stephen D. Cromer 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).

  • Dynamically stable pressure control system
    Patent number: 9127697
    Abstract: A hydraulic pressure control system having a variable displacement pump fluidly connected to a hydraulic motor. The pump provides flow to a first circuit upon demand. Remaining flow is provided to a second circuit. The second circuit includes a pilot controlled pressure reducing valve that adjusts the pumps outlet pressure based upon a sensed loads taken from a conduit between the pressure control valve and an active flow regulator valve.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: September 8, 2015
    Assignee: SAUER-DANFOSS INC.
    Inventors: Charles D. Throckmorton, Stephen D. Cromer, Glenn M. Mahony, Michael J. Stoltenow, Chad J. Daniel