LandOfFree - US Patents - Listing for Tool driving or impacting,Hammer or tool shaft reciprocated by gripping means which...,With fixed means cyclically contacted by grip structure

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Air pressure impact drilling method and apparatus for same

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Apparatus for supporting and rotating a down hole tubular

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Clamping attachment to a device for driving rod elements of low

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Clamping means for a device for driving flexible rod-shaped elem

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Drill head assembly

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Drillhead unit

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Gripping tool adapted for use with device for driving rod-shaped

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Hammer for removing gates or risers from castings

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Impact devices

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Pipe gripping device

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Reexamination Certificate

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Pipe gripping device

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Reexamination Certificate

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Portable drilling machine

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Ratchet and hydraulic seal assembly for rotating hollow shafts

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Rock bolting equipment

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Rock bolting equipment

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Rod driving tool

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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Top head drive assembly with axially movable quill

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which... – With fixed means cyclically contacted by grip structure

Patent

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