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Douglas J. Tanner

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  • St. Cloud, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Check valve control unit
    • Patent number 10,323,759
    • Issue date Jun 18, 2019
    • DeZURIK, Inc.
    • Douglas J. Tanner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pneumatic volume booster for valve positioner
    • Patent number 6,668,848
    • Issue date Dec 30, 2003
    • SPX Corporation
    • Lawrence R. Lafler
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Pneumatic volume booster for valve positioner
    • Patent number 6,659,247
    • Issue date Dec 9, 2003
    • SPX Corporation
    • Lawrence R. Lafler
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Position detection for rotary control valves
    • Patent number 6,484,751
    • Issue date Nov 26, 2002
    • SPX Corporation
    • Lawrence R. Lafler
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pneumatic volume booster for valve positioner
    • Patent number 6,357,335
    • Issue date Mar 19, 2002
    • Sox Corporation
    • Lawrence R. Lafler
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Position detection for rotary control valves
    • Patent number 6,244,296
    • Issue date Jun 12, 2001
    • SPX Corporation
    • Lawrence R. Lafler
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Lockout device for valve actuators
    • Patent number 6,105,484
    • Issue date Aug 22, 2000
    • Gene Kalthoff
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Low backlash compensating coupler
    • Patent number 5,226,851
    • Issue date Jul 13, 1993
    • General Signal Corporation
    • Douglas J. Tanner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Mechanical coupling particularly adapted for coupling a valve and a...
    • Patent number 5,176,464
    • Issue date Jan 5, 1993
    • General Signal Corporation
    • Douglas J. Tanner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve actuator with hydraulic damper
    • Patent number 4,971,288
    • Issue date Nov 20, 1990
    • General Signal Corporation
    • Doug Tanner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Spring return cylinder actuator
    • Patent number 4,885,981
    • Issue date Dec 12, 1989
    • General Signal Corporation
    • William J. Roettger
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve actuator coupling
    • Patent number 4,558,605
    • Issue date Dec 17, 1985
    • General Signal Corporation
    • Douglas J. Tanner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    CHECK VALVE CONTROL UNIT
    • Publication number 20170089475
    • Publication date Mar 30, 2017
    • DeZURIK, Inc.
    • Douglas J. Tanner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Pneumatic volume booster for valve positioner
    • Publication number 20020029811
    • Publication date Mar 14, 2002
    • SPX Corporation
    • Lawrence R. Lafler
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Pneumatic volume booster for valve positioner
    • Publication number 20020007727
    • Publication date Jan 24, 2002
    • SPX Corporation
    • Lawrence R. Lafler
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Position detection for rotary control valves
    • Publication number 20010027812
    • Publication date Oct 11, 2001
    • SPX Corporation, Michigan
    • Lawrence R. Lafler
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...