Patents by Inventor Stefan EFFMANN

Stefan EFFMANN 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).

  • Directional valve, especially for breathing gases, and method for manufacturing same
    Patent number: 11199273
    Abstract: A respirator directional valve (10) includes a valve housing (12), a plurality of valve flaps (16-18), which can be moved by a gas stream or by a flowing medium and are arranged at the edge, and a number of support surfaces (20-22) as a valve seat. A number of support surfaces (20-22) corresponds to a number of valve flaps (16-18). Each valve flap (16-18) is adapted to a surface of a respective support surface (20-22). The support surfaces (20-22) are sloped in relation to a cross-sectional surface through the valve housing (12). The support surfaces (20-22) together form a tip pointing in the flow direction of the respirator directional valve (10). A method for manufacturing such a respirator directional valve (10) is provided including method features relating to the use of such a respirator directional valve (10).
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: December 14, 2021
    Assignee: Dräger Safety AG & Co. KGaA
    Inventors: Christian Wilhelm, Stefan Effmann
  • DIRECTIONAL VALVE, ESPECIALLY FOR BREATHING GASES, AND METHOD FOR MANUFACTURING SAME
    Publication number: 20200173568
    Abstract: A respirator directional valve (10) includes a valve housing (12), a plurality of valve flaps (16-18), which can be moved by a gas stream or by a flowing medium and are arranged at the edge, and a number of support surfaces (20-22) as a valve seat. A number of support surfaces (20-22) corresponds to a number of valve flaps (16-18). Each valve flap (16-18) is adapted to a surface of a respective support surface (20-22). The support surfaces (20-22) are sloped in relation to a cross-sectional surface through the valve housing (12). The support surfaces (20-22) together form a tip pointing in the flow direction of the respirator directional valve (10). A method for manufacturing such a respirator directional valve (10) is provided including method features relating to the use of such a respirator directional valve (10).
    Type: Application
    Filed: February 4, 2020
    Publication date: June 4, 2020
    Inventors: Christian WILHELM, Stefan EFFMANN
  • Directional valve, especially for breathing gases, and method for manufacturing same
    Patent number: 10670158
    Abstract: A directional valve (10) includes a valve housing (12), a plurality of valve flaps (16-18), which can be moved by a gas stream or by a flowing medium and are arranged at the edge, and a number of support surfaces (20-22) as a valve seat. A number of support surfaces (20-22) corresponds to a number of valve flaps (16-18). Each valve flap (16-18) is adapted to a surface of a respective support surface (20-22). The support surfaces (20-22) are sloped in relation to a cross-sectional surface through the valve housing (12). The support surfaces (20-22) together form a tip pointing in the flow direction of the directional valve (10). A method for manufacturing such a directional valve (10) is provided including method features relating to the use of such a directional valve (10).
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: June 2, 2020
    Assignee: Dräger Safety AG & Co. KGaA
    Inventors: Christian Wilhelm, Stefan Effmann
  • DIRECTIONAL VALVE, ESPECIALLY FOR BREATHING GASES, AND METHOD FOR MANUFACTURING SAME
    Publication number: 20180087680
    Abstract: A directional valve (10) includes a valve housing (12), a plurality of valve flaps (16-18), which can be moved by a gas stream or by a flowing medium and are arranged at the edge, and a number of support surfaces (20-22) as a valve seat. A number of support surfaces (20-22) corresponds to a number of valve flaps (16-18). Each valve flap (16-18) is adapted to a surface of a respective support surface (20-22). The support surfaces (20-22) are sloped in relation to a cross-sectional surface through the valve housing (12). The support surfaces (20-22) together form a tip pointing in the flow direction of the directional valve (10). A method for manufacturing such a directional valve (10) is provided including method features relating to the use of such a directional valve (10).
    Type: Application
    Filed: September 26, 2017
    Publication date: March 29, 2018
    Inventors: Christian WILHELM, Stefan EFFMANN