4. Rotary expansible chamber devices
  5. Unlike helical surfaces on relatively wobbling rotating...

Clifford H. Allen

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Actuator assembly

Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
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Actuator assembly

Machine element or mechanism – Gearing – Directly cooperating gears
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Flexible coupling

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Flexible shaft assembly for progressing cavity pump

Rotary expansible chamber devices – Unlike helical surfaces on relatively wobbling rotating...
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Packing gland for pump shaft seal

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
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