4. Rotary expansible chamber devices
  5. With changeable working chamber magnitude
  6. Axially or radially spaced working chambers

Robert W. Stephan

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Power transmission

Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
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Variable displacement vane pump with vanes contacting relatively

Rotary expansible chamber devices – With changeable working chamber magnitude – Axially or radially spaced working chambers
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