Patents by Inventor Thomas A. van Leeuwen

Thomas A. van Leeuwen 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).

  • Publication number: 20220039382
    Abstract: The present invention is in the field of agricultural pathogen control. More specifically the invention relates to methods and compounds for controlling herbivorous arthropods, in particular insects and mites. The invention also provides for compositions comprising the same, methods of making the same, and methods of controlling plant disease.
    Type: Application
    Filed: December 17, 2019
    Publication date: February 10, 2022
    Inventors: Tina Kyndt, Bartel Vanholme, Thomas Van Leeuwen, Willem Desmedt
  • Patent number: 6644459
    Abstract: A transfer assembly for positioning between conveyor sections and for transferring at least one article laterally with respect to the conveying surface defined by the conveyor sections in a direction angled to the conveying direction of the conveying surface includes at least two conveying devices, which define a conveying surface for at least generally aligning with the conveying surface of the conveyor sections, and a sheave assembly. The sheave assembly includes a support member and a reinforced transfer belt having a belt length and defining a transfer surface. At least two transfer sheaves are mounted to the support member with the transfer sheaves supporting the transfer belt. The support member is adapted to move the transfer belt between a non-transferring position wherein the transfer surface is below the conveying surface of the conveying devices and a transferring position wherein the transfer surface is raised above the conveying surface of the conveying devices.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: November 11, 2003
    Assignee: Rapistan Systems Advertising Corp.
    Inventors: Thomas A. van Leeuwen, Mohammad Ghaeli
  • Publication number: 20030111320
    Abstract: A transfer assembly for positioning between conveyor sections and for transferring at least one article laterally with respect to the conveying surface defined by the conveyor sections in a direction angled to the conveying direction of the conveying surface includes at least two conveying devices, which define a conveying surface for at least generally aligning with the conveying surface of the conveyor sections, and a sheave assembly. The sheave assembly includes a support member and a reinforced transfer belt having a belt length and defining a transfer surface. At least two transfer sheaves are mounted to the support member with the transfer sheaves supporting the transfer belt. The support member is adapted to move the transfer belt between a non-transferring position wherein the transfer surface is below the conveying surface of the conveying devices and a transferring position wherein the transfer surface is raised above the conveying surface of the conveying devices.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 19, 2003
    Inventors: Thomas A. van Leeuwen, Mohammad Ghaeli
  • Patent number: 6484871
    Abstract: A belt assembly for a belt turn conveyor includes a belt with a plurality of longitudinal fibers generally aligned or oriented along the curved longitudinal axis of the belt. The belt may comprise a plurality of belt segments which are interconnected to form an endless belt, with each belt segment preferably including a plurality of longitudinal fibers aligned along the longitudinal axis of each respective belt segment. When interconnected, the longitudinal fibers of each belt segment generally align along the curved longitudinal axis of the belt. Alternately, the belt may be woven such that the longitudinal fibers are substantially aligned along the curved longitudinal axis of the curved belt. Thus, a belt assembly for a belt turn conveyor is provided that exhibits a more uniform stiffness along its length, which results in the belt assembly exhibiting reduced forces across its length thus increasing the belt's capacity and longevity.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: November 26, 2002
    Assignee: Rapistan Systems Advertising Corp.
    Inventor: Thomas A. van Leeuwen
  • Publication number: 20020005337
    Abstract: A belt assembly for a belt turn conveyor includes a belt with a plurality of longitudinal fibers generally aligned or oriented along the curved longitudinal axis of the belt. The belt may comprise a plurality of belt segments which are interconnected to form an endless belt, with each belt segment preferably including a plurality of longitudinal fibers aligned along the longitudinal axis of each respective belt segment. When interconnected, the longitudinal fibers of each belt segment generally align along the curved longitudinal axis of the belt. Alternately, the belt may be woven such that the longitudinal fibers are substantially aligned along the curved longitudinal axis of the curved belt. Thus, a belt assembly for a belt turn conveyor is provided that exhibits a more uniform stiffness along its length, which results in the belt assembly exhibiting reduced forces across its length thus increasing the belt's capacity and longevity.
    Type: Application
    Filed: April 20, 2001
    Publication date: January 17, 2002
    Inventor: Thomas A. Van Leeuwen