4. Fluid handling
  5. Line condition change responsive valves
  6. Bi-directional flow valves

William S. Butler

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Aeration preventing shock absorber

Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent

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Cushioning unit shaft seal arrangement

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Fabricated backstop/buffstop

Railway draft appliances – Cushioned – Single center sill
Patent

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Fluid truck bolster snubber

Railway rolling stock – Trucks – Bogie
Patent

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Fluid truck snubber

Fluid handling – Line condition change responsive valves – Bi-directional flow valves
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