4. Rotary kinetic fluid motors or pumps
  5. Smooth runner surface for working fluid frictional contact

Roland Blumenthal

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Compound friction vacuum pump

Rotary kinetic fluid motors or pumps – Smooth runner surface for working fluid frictional contact
Reexamination Certificate

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Evacuating device

Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Turbine regenerative pump
Reexamination Certificate

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Turbomachine

Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having...
Reexamination Certificate

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Turbomolecular pump

Pumps – Condition responsive control of pump drive motor – Responsive to pump or pump fluid temperature
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Profile ID: LFUS-PAI-P-2809913

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