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David L. Robison

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  • Madison, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Excess flow valve with installation indicator
    • Patent number 12,038,094
    • Issue date Jul 16, 2024
    • Georg Fischer Central Plastics LLC
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fusion tee outlet abandonment device
    • Patent number 10,323,783
    • Issue date Jun 18, 2019
    • Honeywell International Inc.
    • David Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe fitting with inner and outer seals
    • Patent number 10,174,874
    • Issue date Jan 8, 2019
    • Honeywell International Inc.
    • David Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Cutter assembly
    • Patent number 8,826,929
    • Issue date Sep 9, 2014
    • Elster Perfection Corporation
    • James R. Moran
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Combination shut-off and resetable excess flow valve
    • Patent number 7,178,544
    • Issue date Feb 20, 2007
    • Perfection Corporation
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Crimped gas riser with jacket assembly
    • Patent number 7,125,052
    • Issue date Oct 24, 2006
    • Perfection Corporation
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Heat trap
    • Patent number 7,093,565
    • Issue date Aug 22, 2006
    • Perfection Corporation
    • David L. Robison
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    No interrupt service tee and method
    • Patent number 7,021,328
    • Issue date Apr 4, 2006
    • Keyspan Corporation
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Connector with fluid line installation indicator
    • Patent number 6,932,389
    • Issue date Aug 23, 2005
    • Perfection Corporation
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Structure for converting a mechanical joint to a fusion joint
    • Patent number 6,892,753
    • Issue date May 17, 2005
    • Perfection Corporation
    • Dave Robison
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    No interrupt service tee and method
    • Patent number 6,612,330
    • Issue date Sep 2, 2003
    • Keyspan Corporation
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Coupling assembly for joining plastic and metal pipes
    • Patent number 6,565,125
    • Issue date May 20, 2003
    • Perfection Corporation
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gas riser with free rotating plastic riser casing
    • Patent number 6,371,525
    • Issue date Apr 16, 2002
    • Perfection Corporation
    • Steven J. Passerell
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Stab-type coupling with collet having locking ribs and rotation pre...
    • Patent number 6,371,531
    • Issue date Apr 16, 2002
    • Perfection Corporation
    • Dave Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe coupling assembly
    • Patent number 5,779,285
    • Issue date Jul 14, 1998
    • Perfection Corporation
    • Dave Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Excess Flow Valve With Installation Indicator
    • Publication number 20230228338
    • Publication date Jul 20, 2023
    • GEORG FISCHER CENTRAL PLASTICS LLC
    • David L. ROBISON
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fusion Tee Outlet Abandonment Device
    • Publication number 20180216773
    • Publication date Aug 2, 2018
    • HONEYWELL INTERNATIONAL INC.
    • David Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Pipe Fitting With Inner And Outer Seals
    • Publication number 20180100612
    • Publication date Apr 12, 2018
    • HONEYWELL INTERNATIONAL INC.
    • David Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    CUTTER ASSEMBLY
    • Publication number 20120312391
    • Publication date Dec 13, 2012
    • James R. Moran
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Application

    Heat trap
    • Publication number 20050139171
    • Publication date Jun 30, 2005
    • Perfection Corporation
    • David L. Robison
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    CONNECTOR WITH FLUID LINE INSTALLATION INDICATOR
    • Publication number 20050140140
    • Publication date Jun 30, 2005
    • Perfection Corporation
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Combination shut-off and resetable excess flow valve
    • Publication number 20050022872
    • Publication date Feb 3, 2005
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    No Interrupt service tee and method
    • Publication number 20040050421
    • Publication date Mar 18, 2004
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Crimped gas riser with jacket assembly
    • Publication number 20030214133
    • Publication date Nov 20, 2003
    • Perfection Corporation
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Method and structure for converting a mechanical joint to a fusion...
    • Publication number 20030037648
    • Publication date Feb 27, 2003
    • Dave Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Coupling assembly for joining plastic and metal pipes
    • Publication number 20010035647
    • Publication date Nov 1, 2001
    • Perfection Corporation
    • David L. Robison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...