Patents by Inventor Sid Jiskoot

Sid Jiskoot 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).

  • Apparatus for opening a grain door
    Patent number: 5357713
    Abstract: An opener of the door of a gravity flow vehicle which allows a mechanical advantage in initially raising the door. After the material within the vehicle begins to flow and decrease the effort required to raise the door, the mechanical advantage is bypassed so that the door may be quickly raised and lowered.
    Type: Grant
    Filed: May 11, 1993
    Date of Patent: October 25, 1994
    Assignee: Dethmers Manufacturing Company
    Inventors: Sid Jiskoot, Walter Lammers