Patents by Inventor Randolph ven der Buhs

Randolph ven der Buhs 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).

  • Disc furrow opener scraper positioning system
    Patent number: 6874584
    Abstract: A furrow opener apparatus comprises a disc rotatably attached to the apparatus such that when the disc engages the ground, a furrow is formed adjacent to a trailing face of the disc. A scraper has a scraper blade oriented substantially parallel to the trailing face of the disc, and mounted such that the scraper blade is oriented in close proximity to or touching a lower portion of the trailing face adjacent to an outer edge of the disc. The scraper is adjustably attached to the apparatus such that the scraper blade can be moved inward along the trailing face of the disc as the disc wears while being maintained substantially parallel to the trailing face of the disc and in close proximity to or touching the trailing face of the disc. A delivery tube for agricultural material can be attached to the apparatus so that it moves in conjunction with the scraper, and the scraper can be biased against the face of the disc.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: April 5, 2005
    Assignee: Bourgault Industries Ltd.
    Inventors: Robert Butterfield, Randolph ven der Buhs, Mark Cresswell
  • Disc furrow opener scraper positioning system
    Publication number: 20040149465
    Abstract: A furrow opener apparatus comprises a disc rotatably attached to the apparatus such that when the disc engages the ground, a furrow is formed adjacent to a trailing face of the disc. A scraper has a scraper blade oriented substantially parallel to the trailing face of the disc, and mounted such that the scraper blade is oriented in close proximity to or touching a lower portion of the trailing face adjacent to an outer edge of the disc. The scraper is adjustably attached to the apparatus such that the scraper blade can be moved inward along the trailing face of the disc as the disc wears while being maintained substantially parallel to the trailing face of the disc and in close proximity to or touching the trailing face of the disc. A delivery tube for agricultural material can be attached to the apparatus so that it moves in conjunction with the scraper, and the scraper can be biased against the face of the disc.
    Type: Application
    Filed: November 8, 2002
    Publication date: August 5, 2004
    Applicant: Bourgault Industries, Ltd.
    Inventors: Robert Butterfield, Randolph ven der Buhs, Mark Cresswell