Patents by Inventor Stuart Van Donselaar

Stuart Van Donselaar 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).

  • Patent number: 6840027
    Abstract: Hay and forages, these days, are often mown, conditioned, and tedded. A disc mower with strap-type protrusions or fingers extending radially outward from the shaft turning the discs and extending upward from the cutting knives several inches will provide each of these three actions at once.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: January 11, 2005
    Assignee: Vermeer Manufacturing Company
    Inventor: Stuart Van Donselaar
  • Publication number: 20040187458
    Abstract: Hay and forages, these days, are often mown, conditioned, and tedded. A disc mower with strap-type protrusions or fingers extending radially outward from the shaft turning the discs and extending upward from the cutting knives several inches will provide each of these three actions at once.
    Type: Application
    Filed: March 28, 2003
    Publication date: September 30, 2004
    Inventor: Stuart Van Donselaar
  • Patent number: 6655118
    Abstract: A harvesting machine with a main frame, a harvesting header having a first end and a second end and a suspension system operatively attached to the main frame for supporting the harvesting header from above, the harvesting header having a lowered position and a raised position. A suspension frame has a rocker arm operatively pivotally attached thereto along a first substantially horizontal axis, the rocker arm having an upper position and a lowermost position. A first link is operatively pivotally attached to the suspension frame along a second substantially horizontal axis and is operatively pivotally attached to the harvesting header at the other end thereof. A second link is operatively pivotally attached to the main frame along a third substantially horizontal axis and is operatively pivotally attached to the harvesting header at a fourth substantially horizontal axis, the second link being disposed substantially always parallel to the first link.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: December 2, 2003
    Assignee: Vermeer Manufacturing Company
    Inventors: Kent Thompson, Stuart Van Donselaar, Shane Bollinger