4. Tool driving or impacting
  5. Impacting devices
  6. Selective axial direction of impact

Boris Nikolaevich Smolyanitsky

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Pneumatic apparatus of the percussive type

Boring or penetrating the earth – Boring without earth removal
Patent

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Pneumatic impact devices

Motors: expansible chamber type – Cyclically operable – Valveless distribution
Patent

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Reversible pneumatic percussive device for making holes in groun

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

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Reversing pneumatic percussive device

Boring or penetrating the earth – Boring without earth removal
Patent

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Profile ID: LFUS-PAI-P-594801

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