Patents by Inventor James R. Wojanis

James R. Wojanis 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 plow balancing system
    Patent number: 6467553
    Abstract: An apparatus for balancing a plow including a balance circuit, a pump fluidly connected to the balance circuit, and a load sensing valve bank fluidly connected to the balance circuit in the pump, wherein the balance circuit generally includes a two-position solenoid valve, a two-position three way solenoid valve, a two-position four-way valve with detent, a counterbalance valve with reverse freeflow check, a pressure relieving valve, and a shuttle valve, the pump is a load sensing pump, and the load sensing valve bank includes a lift and lower valve.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: October 22, 2002
    Inventor: James R. Wojanis