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Robert L. Clapper

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  • Pittsburgh, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Orifice plate seal ring for controlled closure check valve
    • Patent number 4,522,230
    • Issue date Jun 11, 1985
    • Rockwell International Corporation
    • Robert L. Clapper
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Force limiting device for an actuator rod
    • Patent number 4,447,036
    • Issue date May 8, 1984
    • Rockwell International Corporation
    • Andrew Hankosky
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Device for coupling a pair of rods
    • Patent number 4,257,714
    • Issue date Mar 24, 1981
    • Rockwell International Corporation
    • Andrew Hankosky
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Device for coupling a pair of rods
    • Patent number 4,176,981
    • Issue date Dec 4, 1979
    • Rockwell International Corporation
    • Robert L. Clapper
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...