4. Fluid handling
  5. Line condition change responsive valves
  6. Safety cut-off requiring reset

Norman B. Christensen

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Maximum lift system for hydraulic hoe

Excavating – Railway graders – Side former
Patent

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Poppet configuration for counterbalance valve

Fluid handling – Self-proportioning or correlating systems – Supply and exhaust type
Patent

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Relief valve with hydraulic fuse

Fluid handling – Line condition change responsive valves – Safety cut-off requiring reset
Patent

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Valve stem travel limiting apparatus

Valves and valve actuation – Limit stop – Adjustable
Patent

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Profile ID: LFUS-PAI-P-956397

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