4. Fluid reaction surfaces (i.e., impellers)
  5. With heating, cooling or thermal insulation means
  6. Changing state mass within or fluid flow through working...

David A. Frey

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Cooled shroud

Rotary kinetic fluid motors or pumps – With passage in blade – vane – shaft or rotary distributor...
Patent

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Core tied cast airfoil

Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate

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Gas turbine blade with improved cooling

Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent

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