4. Rotary expansible chamber devices
  5. Working chamber surface expressed mathematically

Bernd Denfeld

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Radial piston pump

Pumps – Three or more cylinders arranged in parallel – radial – or... – Radial cylinders
Reexamination Certificate

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Valve arrangement and pump for a gear system

Pumps – Expansible chamber type – Having separate noncyclic valve
Reexamination Certificate

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Valve arrangement and pump for a gear system

Pumps – Expansible chamber type – Having separate noncyclic valve
Reexamination Certificate

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Vane pump

Rotary expansible chamber devices – Working chamber surface expressed mathematically
Patent

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