Patents by Inventor Willem A. van der Hoef

Willem A. van der Hoef 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: 4583635
    Abstract: Articles are dropped under the interior of a drum at its lowermost part, carried by partition walls of the drum to the uppermost part, and permitted to fall onto a further transport device. The drum has separation walls equally spaced from each other along the length of the drum, to form a number of rows of compartments which each can receive a single article and align the article in a preferred orientation. Each partition wall is formed as an angle profile, and each compartment includes an ejector engaging the angle profile. When the respective angle profile is at the highest point of drum rotation, the ejectors of the compartments associated with that profile are all moved away from the angle profile so that articles present in those compartments are ejected and fall onto the further transport device.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: April 22, 1986
    Assignee: Polygram B.V.
    Inventors: Bernhard H. Timmer, Willem A. van der Hoef, Martinus T. Beukeboom