Patents by Inventor Dirk Jan De Greef

Dirk Jan De Greef 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 and method for conveying of fruits over a rollerbed
    Patent number: 6272769
    Abstract: A device for transporting fragile articles, for example fruit and the like, along a longitudinal path of travel is disclosed. The device includes a spaced and parallel series of rotatable rollers extending along the path of travel for carrying the articles thereon, the rollers forming a series of intermediate article receiving spaces therebetween. A drive assembly is provided for rotating the rollers in the direction of the path of travel, and a carrier assembly is positioned with respect to and spaced from the rollers. A carrier assembly includes a spaced series of carrier members constructed and arranged to engage a peripheral surface portion of the rollers, the carrier assembly being constructed and arranged to move the carrier members in the direction of the path of travel as they engage the peripheral surface portions of the rollers for urging the articles along the path of travel.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: August 14, 2001
    Assignee: De Greef s. Wagen-, Carrosserie - en Machinebouw B.V.
    Inventors: Dirk Jan De Greef, Hendrik Dirk Van De Kop, Jan Marinus Van Arkel