TREA

Richard Crawshay

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  • North Vancouver, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Belt and chain flight conveyor
    • Patent number 5,007,525
    • Issue date Apr 16, 1991
    • Inco Limited
    • Richard Crawshay
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Continuous loading apparatus
    • Patent number 4,749,326
    • Issue date Jun 7, 1988
    • Inco Limited
    • Richard Crawshay
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Continuous loading apparatus and method
    • Patent number 4,648,776
    • Issue date Mar 10, 1987
    • Inco Limited
    • John H. Hradil
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Loading apparatus for mines
    • Patent number 4,184,581
    • Issue date Jan 22, 1980
    • Canadian Mine Services Limited
    • Richard Crawshay
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Rod puller for rock drill
    • Patent number 4,155,409
    • Issue date May 22, 1979
    • Canadian Mine Services Ltd.
    • Richard Crawshay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drill head with locking chuck
    • Patent number 3,992,019
    • Issue date Nov 16, 1976
    • Canadian Mine Services Ltd.
    • Richard Crawshay
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Diamond drill supporting apparatus
    • Patent number 3,951,216
    • Issue date Apr 20, 1976
    • Canadian Mine Services Ltd.
    • Richard Crawshay
    • E21 - EARTH DRILLING MINING