Patents by Inventor Adrianus W. Tas

Adrianus W. Tas 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: 5306877
    Abstract: An apparatus for sorting spherical products, comprising an endless conveyor equipped with bearing rollers (2), with a product lifting element (10) arranged between each pair of successive bearing rollers (2), this product lifting element (10) being capable of assuming a first, lowermost position wherein the product (16) is clear of the lifting element (10) and rests on the bearing rollers (2), while in a second, higher position the product (16) is clear of the bearing rollers (2) and rests on the lifting element (10) to be subjected to another operation, for instance a weighing step or another physical evaluation.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: April 26, 1994
    Inventor: Adrianus W. Tas
  • Patent number: 5208997
    Abstract: This invention relates to an apparatus for grading flowers on the basis of the thickness of the stem, wherein each flower stem is passed between a rotatable roller and a restraint. One of these two members is arranged for movement and is urged towards the other member under the influence of a force. The displacement of the rotatable roller resulting from the passage of the flower stem is a measure for the thickness of the stem. The rotatable roller is driven at a peripheral velocity which is approximately equal to the speed of the passing flowers.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: May 11, 1993
    Assignee: Aweta B.V.
    Inventor: Adrianus W. Tas
  • Patent number: 5190137
    Abstract: This invention relates to an apparatus for orienting spherical products having at least one substantially flattened surface, such as tomatoes and the like. The apparatus comprises a roller conveyor whose rollers are rotatable about their axis, while the free space between successive rollers is smaller than the greatest diameter of the product to be oriented. The roller conveyor further comprises members projecting above the top surface of the rollers to form conveyor compartments for receiving therein one product to be oriented. According to the invention, the center-to-center distance between successive rollers of the conveyor (1) is at most equal to the diameter of the flattened surface of the product to be sorted.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: March 2, 1993
    Inventor: Adrianus W. Tas
  • Patent number: 5159796
    Abstract: The invention relates to an apparatus for uniformly filling a container with products such as fruits or the like to a predetermined weight or level, in which apparatus the angular position of the container with respect to the horizontal is changed during filling in response to the instantaneous weight or level of the product in the container. According to the invention, a tongue which can be moved back and forth in substantially horizontal direction is provided below a product supply. The tongue assumes positions in response to the instantaneous weight or level of the product in the container such that the height of drop of the products into the container is kept at a minimal during filling and the container is filled uniformly.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: November 3, 1992
    Inventor: Adrianus W. Tas
  • Patent number: 5157899
    Abstract: The invention relates to a method of sorting and bundling flowers, comprising hanging the flowers separately in individual flower supporting members circulating in a first closed path; as they are traversing the path, designating the flowers as to at least one characteristic, such as stem length; depending on the designated characteristic, transferring the flowers to second flower supporting members circulating in a second path; grouping the flowers into groups of a limited number of flowers; and collecting and bundling a series of groups into a bunch. The individual flower supporting members are moved adjacent a transfer point from a transport position into a transfer position in a tract substantially perpendicular to the first path, while during transfer the second flower supporting members are held stationary and oriented in the direction of movement of the individual flower supporting members. The invention further relates to apparatus for applying this method.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: October 27, 1992
    Inventor: Adrianus W. Tas
  • Patent number: 4583636
    Abstract: A device for weight classification of crops comprising and endless conveying member, pick-up members for the products to be weight pivotally coupled with the conveying member and a mechanism for assessing the weight of the products located in and/or on the pick-up members, whereby a pick-up member is pivoted with the aid of a first pivotal shaft to a tie member, which is coupled with the aid of a second pivotal shaft extending at least substantially parallel to the first pivotal shaft with the endless conveying member in a manner such that the center of the pick-up member is located between the two pivotal shafts.
    Type: Grant
    Filed: November 8, 1983
    Date of Patent: April 22, 1986
    Inventor: Adrianus W. Tas