Patents by Inventor Dieter Steinfeld

Dieter Steinfeld 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: 10179579
    Abstract: A valve arrangement for brake control of a vehicle braking system which is operated using pressure medium includes a relay valve arranged in a housing, and a solenoid valve configured for controlling the relay valve. The relay valve has an axially displaceable relay valve piston with a first annular sealing seat configured to be acted on with a control pressure which is directed into a control pressure chamber and which can be adjusted by the solenoid valve, having an axially displaceable plate valve having a radial sealing face, and having an insert secured to the housing which separates an operating chamber from a pressure chamber and which has a second annular sealing seat which is arranged coaxially relative to the first annular sealing seat of the relay valve piston. The first and second annular sealing seats cooperate simultaneously or alternately with the radial sealing face of the plate valve.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: January 15, 2019
    Assignee: WABCO GMBH
    Inventors: Lars Didwiszus, Hartmut Schappler, Dieter Steinfeld
  • Publication number: 20170080912
    Abstract: A valve arrangement for brake control of a vehicle braking system which is operated using pressure medium includes a relay valve arranged in a housing, and a solenoid valve configured for controlling the relay valve. The relay valve has an axially displaceable relay valve piston with a first annular sealing seat configured to be acted on with a control pressure which is directed into a control pressure chamber and which can be adjusted by the solenoid valve, having an axially displaceable plate valve having a radial sealing face, and having an insert secured to the housing which separates an operating chamber from a pressure chamber and which has a second annular sealing seat which is arranged coaxially relative to the first annular sealing seat of the relay valve piston. The first and second annular sealing seats cooperate simultaneously or alternately with the radial sealing face of the plate valve.
    Type: Application
    Filed: May 22, 2015
    Publication date: March 23, 2017
    Inventors: Lars Didwiszus, Hartmut Schappler, Dieter Steinfeld
  • Patent number: 8006801
    Abstract: A noise damper for a compressed air device includes a tubular housing part provided with an air inlet and an inserted insulating material, in particular, an inserted knitted fabric roll. The air inlet is embodied in the envelope of the tubular housing part such that the supplied air tangentially flows through the insulating material or the knitted fabric roll, is radially deviated inside the tubular housing part, and axially flows out from at least one end of the tubular housing part.
    Type: Grant
    Filed: June 4, 2005
    Date of Patent: August 30, 2011
    Assignee: WABCO GmbH
    Inventors: Bernd Christoffers, Dieter Steinfeld, Hendrick Harting
  • Publication number: 20080289900
    Abstract: A noise damper for a compressed air device includes a tubular housing part provided with an air inlet and an inserted insulating material, in particular, an inserted knitted fabric roll. The air inlet is embodied in the envelope of the tubular housing part such that the supplied air tangentially flows through the insulating material or the knitted fabric roll, is radially deviated inside the tubular housing part, and axially flows out from at least one end of the tubular housing part.
    Type: Application
    Filed: June 4, 2005
    Publication date: November 27, 2008
    Inventors: Bernd Christoffers, Dieter Steinfeld, Hendrick Harting
  • Patent number: D849615
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: May 28, 2019
    Assignee: WABCO EUROPE BVBA
    Inventors: Sudhive Nair, Dieter Steinfeld, Rafal Bialon