4. Tool driving or impacting
  5. Drive controlled by relative axial movement of tool

James D. Cunningham

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Caster and braking system

Brakes – To retard rolling of caster
Reexamination Certificate

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Electric impact tool

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

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Electric impact tool

Elongated-member-driving apparatus – With control means responsive to sensed condition – Work-responsive
Patent

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Electrically operated impact tool

Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which...
Patent

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High impact device and method

Tool driving or impacting – Processes
Patent

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