Patents by Inventor Stefan Pfund

Stefan Pfund 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: 8955385
    Abstract: A pressure monitoring system (200) is provided. The pressure monitoring system (200) includes a housing (201) and a fluid port (202) formed in the housing (201). The pressure monitoring system (200) also includes a first pressure switch (204) positioned within at least a portion of the housing (201). The first pressure switch (204) is in fluid communication with the fluid port (202). The pressure monitoring system (200) also includes a second pressure switch (205) positioned within at least a portion of the housing (201). The second pressure switch (205) is also in fluid communication with the fluid port (202).
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: February 17, 2015
    Assignee: Norgren GmbH
    Inventors: Roland Baier, Stefan Pfund
  • Patent number: 8695636
    Abstract: A one piece double membrane diaphragm including an upper (308) and lower diaphragm membrane (310) joined together by a central section (312) is provided. The upper diaphragm membrane (308) seals against a top sealing surface (222) when the diaphragm is in a first position. The lower diaphragm membrane (310) seals against a bottom sealing surface (224) when the diaphragm is in a second position. The diaphragm may also be made from a resilient material and shaped in such a way as to create a spring force holding the diaphragm into a default position in the valve.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: April 15, 2014
    Assignee: Norgren GmbH
    Inventors: Daniel Kuhnle, Stefan Pfund
  • Publication number: 20120111121
    Abstract: A pressure monitoring system (200) is provided. The pressure monitoring system (200) includes a housing (201) and a fluid port (202) formed in the housing (201). The pressure monitoring system (200) also includes a first pressure switch (204) positioned within at least a portion of the housing (201). The first pressure switch (204) is in fluid communication with the fluid port (202). The pressure monitoring system (200) also includes a second pressure switch (205) positioned within at least a portion of the housing (201). The second pressure switch (205) is also in fluid communication with the fluid port (202).
    Type: Application
    Filed: July 7, 2010
    Publication date: May 10, 2012
    Applicant: Norgren GmbH
    Inventors: Roland Baier, Stefan Pfund
  • Patent number: 8173918
    Abstract: A pressure switch (100) having a housing (101) and a connector (106) coupled to the housing (101) is provided. The housing (101) comprises a first chamber (212) and a second chamber (213). The first and second chambers (212, 213) are separated by an integrated diaphragm (102). The integrated diaphragm (102) has a first side (210) and a second side (211). The integrated diaphragm (102) flexes in response to a pre-determined pressure acting on the second side (211). A first bushing (103) is inserted into the first chamber (212) of the housing (101) and coupled to the first side of the integrated diaphragm (102). The connector (106) comprises one or more electrical contact members (219) and at least one switch (105), the at least one switch (105) communicates with the first side (210) of the integrated diaphragm (102).
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: May 8, 2012
    Assignee: Norgren GmbH
    Inventors: Roland Baier, Stefan Pfund
  • Publication number: 20100300863
    Abstract: A pressure switch (100) having a housing (101) and a connector (106) coupled to the housing (101) is provided. The housing (101) comprises a first chamber (212) and a second chamber (213). The first and second chambers (212, 213) are separated by an integrated diaphragm (102). The integrated diaphragm (102) has a first side (210) and a second side (211). The integrated diaphragm (102) flexes in response to a pre-determined pressure acting on the second side (211). A first bushing (103) is inserted into the first chamber (212) of the housing (101) and coupled to the first side of the integrated diaphragm (102). The connector (106) comprises one or more electrical contact members (219) and at least one switch (105), the at least one switch (105) communicates with the first side (210) of the integrated diaphragm (102).
    Type: Application
    Filed: May 29, 2007
    Publication date: December 2, 2010
    Applicant: NORGREN GMBH
    Inventors: Roland Baier, Stefan Pfund
  • Publication number: 20090014077
    Abstract: A one piece double membrane diaphragm is disclosed. The double membrane diaphragm has an upper (308) and lower diaphragm membrane (310) joined together by a central section (312). The upper diaphragm membrane (308) is configured to seal against a top sealing surface (222) when the diaphragm is in a first position. The lower diaphragm membrane (310) is configured to seal against a bottom sealing surface (224) when the diaphragm is in a second position. An upper rim (318) may be attached to the upper diaphragm membrane (308) where the upper rim (318) is configured to hold the upper diaphragm membrane (308) into the valve. A lower rim (320) may be attached to the lower diaphragm membrane (310) where the lower rim (320) is configured to hold the lower diaphragm membrane (320) into the valve. The diaphragm may also be made from a resilient material and shaped ia such a way as to create a spring force holding the diaphragm into a default position in the valve.
    Type: Application
    Filed: March 15, 2006
    Publication date: January 15, 2009
    Inventors: Daniel Kuhnle, Stefan Pfund
  • Patent number: 6758241
    Abstract: A safety valve for compressed air-operated consumers, including a valve housing having bores, and two direction control valves connected in parallel, each of the control valves having a working piston and a valve head connected to the piston. Two pilot control valves are operatively connected to the directional control valves so that each of the direction control valves is switchable by one of the pilot control valves. Each of the two valve heads is guided in a respective one of the bores in the valve housing. The housing has two cross-channels arranged to connect crosswise to each other. A first one of the pilot valves has a valve seat connected via a first pilot channel in the housing to one of the cross-channels which proceeds from the bore of one of the valve heads. A second of the pilot valves has a valve seat connected via a second pilot channel to another of the cross-channels which proceeds from the bore of another of the valve heads.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: July 6, 2004
    Assignee: IMI Norgren-Herion Fluidtronic GmbH & Co. KG
    Inventors: Stefan Pfund, Günter Baldauf