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Fluid driven down-the-hole drilling machine

Tool driving or impacting – Impacting devices – Selective axial direction of impact
Patent

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Fluid impulse torque tool

Tool driving or impacting – Automatic control of power operated means – Tool advance causing or controlling means
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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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 percussion device

Tool driving or impacting – Impacting devices – Hammer head constitutes piston of drive motor
Reexamination Certificate

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Fluid operated power tool

Tool driving or impacting – Means to drive tool about an axis – Fluid motor
Patent

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Fluid operated power tool

Tool driving or impacting – Automatic control of power operated means – Tool advance causing or controlling means
Patent

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Fluid operated ram

Tool driving or impacting – Impacting devices – Hammer head comprises plural parts or diverse materials
Patent

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Fluid operated rock drill hammer

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

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Fluid operated rock drill hammer

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

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Fluid pressure impulse nut runner

Tool driving or impacting – Impacting devices – With anvil arranged to transmit torsional impact to tool
Patent

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Fluid-actuated impact hammer

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

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Fluid-operated power tool

Tool driving or impacting – Means to drive tool about an axis – Fluid motor
Reissue Patent

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Fluid-operated power tool

Tool driving or impacting – Means to drive tool about an axis – Fluid motor
Reexamination Certificate

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Fluid-operated power tool

Tool driving or impacting – Means to drive tool about an axis – Fluid motor
Reissue Patent

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Fluid-operated striker assembly with automatic stroke length var

Tool driving or impacting – Impacting devices – Hammer head constitutes piston of drive motor
Patent

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Fluid-powered impact device and tool therefor

Tool driving or impacting – Power paths to plural tools from single drive
Patent

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Fluid-powered percussion tool

Tool driving or impacting – Impacting devices – Hammer head constitutes piston of drive motor
Patent

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Fluid-pressure operated tools

Tool driving or impacting – Automatic control of power operated means – Tool advance causing or controlling means
Patent

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