4. Fluid handling
  5. Line condition change responsive valves
  6. Direct response valves

Robert D. Douglas

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Crankshaft, compressor using crankshaft, and method for...

Expansible chamber devices – Relatively movable working members – Interconnected with common rotatable shaft
Reexamination Certificate

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Gas compressor construction and assembly

Pumps – Three or more cylinders arranged in parallel – radial – or... – Motor driven
Patent

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Gas compressor head and discharge valve construction

Pumps – Expansible chamber type – Valved piston
Patent

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Gas compressor head and discharge valve construction

Fluid handling – Line condition change responsive valves – Direct response valves
Patent

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Train defect detecting and enunciating system

Railway switches and signals – Cab signal or train control – Train defect
Patent

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Profile ID: LFUS-PAI-P-764630

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