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

Konstantin Stepanovich Gurkov

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Impact action mechanism

Internal-combustion engines – Free piston – Single chamber; one piston
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Method of making built-in-place reinforced concrete piles

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Percussive device for driving holes in soil

Tool driving or impacting – Impacting devices – Selective axial direction of impact
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Pneumatic apparatus of the percussive type

Boring or penetrating the earth – Boring without earth removal
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Pneumatic impact devices

Motors: expansible chamber type – Cyclically operable – Valveless distribution
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Profile ID: LFUS-PAI-P-594805

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