4. Rotary expansible chamber devices
  5. With mechanical sealing
  6. By changing working member or cylinder relative position

James Michael Mayer

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Internal gear pump having a feed groove aligned with the roots o

Rotary expansible chamber devices – Moving cylinder – Rotating
Patent

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Internal gear pump having a shaft seal

Rotary expansible chamber devices – With mechanical sealing
Reexamination Certificate

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Method of making an internal gear pump

Metal working – Method of mechanical manufacture – Prime mover or fluid pump making
Reexamination Certificate

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Timed element, high pressure, industrial rotary lobe pump

Rotary expansible chamber devices – With mechanical sealing – By changing working member or cylinder relative position
Patent

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Profile ID: LFUS-PAI-P-879163

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