Patents by Inventor Donald Louis Bianchetta

Donald Louis Bianchetta 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).

  • Fluid control system for multiple circuited work elements
    Patent number: 4112821
    Abstract: A fluid system has at least first and second circuits each having a plurality of work elements connected in interruptible series. Control elements are provided for selectively, automatically passing fluid from one circuit to preselected positions in the other circuit in response to operation of preselected work elements.
    Type: Grant
    Filed: December 3, 1976
    Date of Patent: September 12, 1978
    Assignee: Caterpillar Tractor Co.
    Inventor: Donald Louis Bianchetta