Patents by Inventor James Prazak

James Prazak 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).

  • Electro-hydraulic actuator
    Patent number: 8997473
    Abstract: An electro-hydraulic actuator (EHA) includes a hydraulic circuit having a plurality of pressure compensated flow control valves for limiting the maximum flow rate through the fluid conduits regardless of the loads imparted on the actuator. In one embodiment of the EHA, a plurality of combination manual override/thermal expansion valves that simplify the manufacture of the EHA.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: April 7, 2015
    Assignee: Parker Hannifin Corporation
    Inventors: Matthew Olson, James Prazak
  • ELECTRO-HYDRAULIC ACTUATOR
    Publication number: 20110289912
    Abstract: An electro-hydraulic actuator (EHA) includes a hydraulic circuit having a plurality of pressure compensated flow control valves for allowing a maximum flow rate through the fluid conduits regardless of the loads imparted on the actuator. In one embodiment of the EHA, a plurality of combination manual override/thermal expansion valves that simplify the manufacture of the EHA.
    Type: Application
    Filed: April 21, 2011
    Publication date: December 1, 2011
    Inventors: MATTHEW OLSON, James Prazak