Patents by Inventor Wilfried Dünnwald

Wilfried Dünnwald 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: 20240083688
    Abstract: A device for guiding a conveyor belt, having a guide unit with an outer and an inner hollow-cylindrical body, the inner hollow-cylindrical body having a first central axis and being arranged in the outer hollow-cylindrical body, which has a second central axis, and both hollow-cylindrical bodies each have a central axis, with at least one bearing for rotatably mounting the outer hollow-cylindrical body on the inner hollow-cylindrical body and with an articulation body designed for mounting the inner hollow-cylindrical body on a central axle, wherein the articulation body is further designed to allow a horizontal and/or vertical change in angle of the first and/or second central axis relative to a central axis of the central axle.
    Type: Application
    Filed: March 24, 2022
    Publication date: March 14, 2024
    Inventors: Wilfried Dünnwald, Michael Prenner, Thorsten Koth
  • Patent number: 10252865
    Abstract: A device for stripping material from a conveyor belt conveyor. The device includes a stripping body which can be pulled against the conveyor belt by means of a carrying element, a fastening device, and a tensioning device for the carrying element. In an installed state the carrying element is connected to the fastening device at one of its end and is connected to the tensioning device at its other end. The tensioning device has a spring, a stop for supporting the spring and a traction rod. The traction rod is connected to the carrying element. The spring is arranged in a receptacle associated with one or more adjusting means defining a through opening as a passage for the traction rod. The receptacle or the respective adjusting means defines a reference point for setting a variable tensioning force which corresponds to a desired tensile force dependent upon said angle.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: April 9, 2019
    Assignee: ScrapeTec GmbH
    Inventor: Wilfried Dünnwald
  • Publication number: 20170057753
    Abstract: A device for stripping material from a conveyor belt conveyor. The device includes a stripping body which can be pulled against the conveyor belt by means of a carrying element, a fastening device, and a tensioning device for the carrying element. In an installed state the carrying element is connected to the fastening device at one of its end and is connected to the tensioning device at its other end. The tensioning device has a spring, a stop for supporting the spring and a traction rod. The traction rod is connected to the carrying element. The spring is arranged in a receptacle associated with one or more adjusting means defining a through opening as a passage for the traction rod. The receptacle or the respective adjusting means defines a reference point for setting a variable tensioning force which corresponds to a desired tensile force dependent upon said angle.
    Type: Application
    Filed: August 29, 2016
    Publication date: March 2, 2017
    Inventor: Wilfried Dünnwald
  • Patent number: 8978876
    Abstract: An arrangement for stripping material from the lower run of the conveyor belt includes scrapers divided into groups, arranged over the width of the conveyor belt and lying resiliently elastically against the underside of the lower run. The scrapers are arranged obliquely to the direction of travel of the lower run. The scrapers of a first group are oriented angled relative to the scrapers of an adjacent second group. The arrangement provides for each scraper to be supported at least indirectly on the supporting frame of the belt conveyor via at least two wound leg springs. Each respective leg spring is connected by its upper end to a front or rear end portion of the scraper, and is connected rotatably by its lower end to a transverse strut of a supporting frame.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: March 17, 2015
    Inventor: Wilfried Dünnwald
  • Publication number: 20120305367
    Abstract: An arrangement for stripping material from the lower run of the conveyor belt includes scrapers divided into groups, arranged over the width of the conveyor belt and lying resiliently elastically against the underside of the lower run. The scrapers are arranged obliquely to the direction of travel of the lower run. The scrapers of a first group are oriented angled relative to the scrapers of an adjacent second group. The arrangement provides for each scraper to be supported at least indirectly on the supporting frame of the belt conveyor via at least two wound leg springs. Each respective leg spring is connected by its upper end to a front or rear end portion of the scraper, and is connected rotatably by its lower end to a transverse strut of a supporting frame.
    Type: Application
    Filed: November 19, 2010
    Publication date: December 6, 2012
    Inventor: Wilfried Dünnwald