Patents by Inventor Jay Borstad

Jay Borstad 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).

  • Demountable gantry, boom hoist and counterweight
    Patent number: 4081081
    Abstract: The back hitch assembly for a lift crane includes hydraulic cylinders for raising the pivotally mounted gantry members and masts. Counterweight lift links are connected between the gantry and the counterweight and the back hitch cylinders may be used to mount and demount the counterweight and the boom hoist winch. The masts, gantry members and back hitch cylinders may be folded back over the bed of the crane for low profile transport or they may be demounted to further reduce weight.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: March 28, 1978
    Assignee: The Manitowoc Company, Inc.
    Inventors: James G. Morrow, Sr., David J. Pech, Jay Borstad