Patents by Inventor Conrad Marius DU PLESSIS

Conrad Marius DU PLESSIS 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: 10343848
    Abstract: The invention relates to an arrangement for detecting a belt tear in a conveyor belt, comprising a trigger (1) which is arranged below the conveyor belt (2) transversely to the conveying direction of the conveyor belt and which is connected to a load limit switch (3). The arrangement also comprises a signalling device (4) for indicating and/or signalling a belt tear to a control unit (5). The invention is characterized in that a chain (6) which is suspended below the conveyor belt (2) is used as the trigger (1), said chain transmitting forces produced in the event of a belt tear to the load limit switch (3). In an advantageous embodiment, the load limit switch (3) has an inductive proximity switch (7), and in an additional advantageous embodiment, the load limit switch is connected to a control unit (5) via an actuator sensor interface (8) as a bus participant.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: July 9, 2019
    Assignee: IFM Electronic GmbH
    Inventors: Hansjörg Hopp, Conrad Marius Du Plessis
  • Publication number: 20180057270
    Abstract: The invention relates to an arrangement for detecting a belt tear in a conveyor belt, comprising a trigger (1) which is arranged below the conveyor belt (2) transversely to the conveying direction of the conveyor belt and which is connected to a load limit switch (3). The arrangement also comprises a signalling device (4) for indicating and/or signalling a belt tear to a control unit (5). The invention is characterized in that a chain (6) which is suspended below the conveyor belt (2) is used as the trigger (1), said chain transmitting forces produced in the event of a belt tear to the load limit switch (3). In an advantageous embodiment, the load limit switch (3) has an inductive proximity switch (7), and in an additional advantageous embodiment, the load limit switch is connected to a control unit (5) via an actuator sensor interface (8) as a bus participant.
    Type: Application
    Filed: May 9, 2016
    Publication date: March 1, 2018
    Applicant: IFM Electronic GmbH
    Inventors: Hansjörg HOPP, Conrad Marius DU PLESSIS