4. Motors: expansible chamber type
  5. Relatively movable working members with one having motive...
  6. One working member oppositely biased by another

Petr Y. Fadeev

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Apparatus for drifting openings in hard rock

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With material-handling means
Patent

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Hammer for breaking strong abrasive materials

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Percussive-type cutter
Patent

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Machine for driving workings in hard rocks

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Percussive-type cutter
Patent

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Percussive action machine

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

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Percussive device

Motors: expansible chamber type – Relatively movable working members with one having motive... – One working member forms movable chamber for another
Patent

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Profile ID: LFUS-PAI-P-880538

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