Patents by Inventor Arthur Wettstein

Arthur Wettstein 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).

  • Method for cleaning and sorting bulk material
    Patent number: 5733592
    Abstract: For cleaning foodstuffs in the form of a bulk material, such as cereal grains, rice grains, soybeans, sunflower seeds, coffee beans, and the like, there is provided an optical sorting device (24, 24a, 24a') subsequent to a precleaning system (6), which enables sorting on the basis of color and/or size and/or shape. Each particle of the bulk material is allocated to a particle class determined by parameters and conveyed on a supporting surface transporting the bulk material to a reception area (43, 44, 45) for the respective particle class. To clean the bulk material, impurities and bad particles are sorted out of the product, with the product being partitioned into classes, if required.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: March 31, 1998
    Assignee: Buhler AG
    Inventors: Arthur Wettstein, Gilbert Moret
  • Cleaning and sorting bulk material
    Patent number: 5699724
    Abstract: For cleaning foodstuffs in the form of a bulk material, such as cereal grains, rice grains, soybeans, sunflower seeds, coffee beans, and the like, there is provided an optical sorting device (24, 24a, 24a') subsequent to a precleaning system (6), which enables sorting on the basis of color and/or size and/or shape. Each particle of the bulk material is allocated to a particle class determined by parameters and conveyed on a supporting surface transporting the bulk material to a reception area (43, 44, 45) for the respective particle class. To clean the bulk material, impurities and bad particles are sorted out of the product, with the product being partitioned into classes, if required.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: December 23, 1997
    Assignee: Buhler AG
    Inventors: Arthur Wettstein, Gilbert Moret