4. Boring or penetrating the earth
  5. Below-ground impact members
  6. Fluid-operated

Ian G. Rear

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Down hole hammer

Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Patent

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Downhole recirculating hammer

Tool driving or impacting – Work cleansing – Cleansing fluid passage through hammer head
Patent

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Fluid operated hammer

Tool driving or impacting – Drive controlled by relative axial movement of tool – Drive motor controlled
Patent

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Fluid operated hammer

Tool driving or impacting – Impacting devices – Impact transmitting anvil
Patent

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Uphole hammer

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent

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Profile ID: LFUS-PAI-P-836834

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