4. Motors: expansible chamber type
  5. Cyclically operable
  6. Working chamber receives controlled motive fluid supply from...

Trevor E. Wallace

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Hydraulic percussive machines

Expansible chamber devices – With cushioning means effective over a portion only of stroke
Patent

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Hydraulic percussive machines

Tool driving or impacting – Impacting devices – With means for rotating tool
Patent

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Hydraulic percussive machines

Motors: expansible chamber type – Cyclically operable – Working chamber receives controlled motive fluid supply from...
Patent

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Hydraulic rotary-percussive machines

Motors: expansible chamber type – Plural relatively movable or rigidly interconnected working... – Condition responsive means for modifying working member...
Patent

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