Patents by Inventor Oliver Trefz

Oliver Trefz 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: 20240263717
    Abstract: A valve unit of a shut-off valve having an actuator stem extending vertically with respect to the throughflow direction for activating a shut-off device, a shut-off device, wherein the shut-off device is adjustably arranged on the actuator stem by means of a threaded connection, a spring element for applying the required closing force to the shut-off device and a control element, axially secured on the actuator stem, for pre-tensioning the spring element, wherein the valve unit has a support nut arranged on the actuator stem and a delimiting element forming a stop for the support nut in order to define the closed position of the shut-off device, wherein the valve unit has two threaded connections arranged on the actuator stem, a threaded connection between the shut-off device and the actuator stem and a threaded connection between the actuator stem and the support nut.
    Type: Application
    Filed: February 1, 2024
    Publication date: August 8, 2024
    Inventors: Christoph KRAUTER, Martin ANDRY, Joerg HUNNEKUHL, Jonas HUESSY, Oliver TREFZ
  • Publication number: 20240240719
    Abstract: Slide unit for a shut-off valve, preferably a gate valve, comprising a shut-off wedge for closing and opening the shut-off valve and a drive unit having a threaded connection for actuating the shut-off wedge, wherein the slide unit has a sealed chamber, wherein the threaded connection of the drive unit is arranged in the sealed chamber and a sealing unit is provided for sealing the chamber, as a result of which the entire threaded connection is constantly protected against the medium and contaminants, both when the shut-off valve is open and closed.
    Type: Application
    Filed: January 3, 2024
    Publication date: July 18, 2024
    Inventors: Oliver Trefz, Martin Andry, Joerg Hunnekuhl, Christoph Krauter, Jonas Huessy
  • Publication number: 20240191809
    Abstract: A pressure control valve for controlling the pressure of gaseous and liquid media in pipelines, preferably in the drinking water field, containing: a main valve to which the pipeline is connected, wherein the main valve has a main valve housing, a guide cylinder, a valve element, channels for conducting the medium and a spring element, the valve element and the guide cylinder are arranged concentrically with respect to one another and the valve element is movably arranged on the guide cylinder; a control block, wherein the control block has channels for supplying the medium to the main valve and to the pilot valve; and a pilot valve for controlling the inspection pressure, wherein the pilot valve likewise has channels for guiding the medium, wherein the main valve, the control block and the pilot valve are medium-tightly interconnected by means of plug connections.
    Type: Application
    Filed: April 1, 2022
    Publication date: June 13, 2024
    Inventors: Dirk PETRY, Oliver TREFZ, Flavio CANTONI
  • Patent number: 10648593
    Abstract: A pipe clamp for a main pipe conveying a medium. The pipe clamp includes a saddle member and bearing elements, wherein the bearing elements are arranged on the saddle member. The pipe clamp further includes a tension unit, wherein the tension unit comprises at least one band for encircling the main pipe, a band linkage, and a clamping lever. The band linkage and the clamping lever are each arranged at one end of the at least one band and are opposite one another. An extension is arranged on the clamping lever, and the extension is configured to be removed from the clamping lever after the tension unit is firmly clamped on the main pipe.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: May 12, 2020
    Assignee: GEORG FISCHER WAVIN AG
    Inventors: Oliver Trefz, Jonas Huessy, Dirk Petry
  • Publication number: 20190226607
    Abstract: A pipe clamp for a main pipe conveying a medium. The pipe clamp includes a saddle member and bearing elements, wherein the bearing elements are arranged on the saddle member. The pipe clamp further includes a tension unit, wherein the tension unit comprises at least one band for encircling the main pipe, a band linkage, and a clamping lever. The band linkage and the clamping lever are each arranged at one end of the at least one band and are opposite one another. An extension is arranged on the clamping lever, and the extension is configured to be removed from the clamping lever after the tension unit is firmly clamped on the main pipe.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 25, 2019
    Inventors: Oliver Trefz, Jonas Huessy, Dirk Petry
  • Patent number: 8474785
    Abstract: A valve assembly (1) comprising a valve housing (2), a stem (4) that is disposed perpendicular to the direction of flow within the valve housing (2), and a blocking member (3) which can be movably connected to the stem (4). The stem (4) is provided with a device (5) for limiting torque.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: July 2, 2013
    Assignee: Georg Fischer Wavin AG
    Inventors: Thomas Helmbold, Ozan Ufuk Topcuogullari, Oliver Trefz, Joerg Wermelinger, Peter Haug
  • Publication number: 20100224808
    Abstract: A valve assembly (1) comprising a valve housing (2), a stem (4) that is disposed perpendicular to the direction of flow within the valve housing (2), and a blocking member (3) which can be movably connected to the stem (4). The stem (4) is provided with a device (5) for limiting torque.
    Type: Application
    Filed: July 9, 2008
    Publication date: September 9, 2010
    Applicant: GEORG FISCHER WAVIN AG
    Inventors: Thomas Helmbold, Ozan Ufuk Topcuogullari, Oliver Trefz, Joerg Wermelinger, Peter Haug