4. Metal working
  5. Method of mechanical manufacture
  6. Impeller making

David B. Berrong

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Aligning and seal ring retracting apparatus for plug type valve

Valves and valve actuation – Reciprocating valve – Piston
Patent

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Anti-wedging pressure seal ring apparatus

Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Patent

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Apparatus and method for measuring ventilation flow exiting a sp

Measuring and testing – Volume or rate of flow – Using turbine
Patent

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Engaging lever lock for rotor turning gear

Machine element or mechanism – Gearing – Disconnecting means
Patent

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Method for assembly of a stator in the field

Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate

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Profile ID: LFUS-PAI-P-249327

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