4. Expansible chamber devices
  5. Oscillating working member or cylinder therefor
  6. Oscillatory shaft with radially extending vane

Fred R. Underwood

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Vane actuator

Expansible chamber devices – Oscillating working member or cylinder therefor – Oscillatory shaft with radially extending vane
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Water treatment control system

Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system
Reexamination Certificate

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Water treatment control system

Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system
Reexamination Certificate

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