Patents by Inventor Gerry Warren

Gerry Warren 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 circuit with a booster circuit for operating the working members of earth-moving machines
    Patent number: 4845948
    Abstract: A hydraulic operating circuit for working members of earth-moving machines includes linear and rotary hydraulic actuators each of which is associated with a respective hydraulic distributor supplied from a principal supply and with a pressure compensator of the load-sensing type. A re-supply circuit is also associated with one or more of the rotary actuators for integrating the leakage and includes two anticavitation valves and a valve for boost-feeding the anticavitation valves from the principal supply.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: July 11, 1989
    Assignee: Trinova S.p.A.
    Inventors: Piero Tha, Gerry Warren