4. Excavating
  5. Ditcher
  6. Condition responsive

Yoshinao Haraoka

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Apparatus for changing and controlling volume of hydraulic oil i

Power plants – Pressure fluid source and motor – Servo-motor having externally operated control valve sets...
Patent

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Control device for hydraulically operated machine

Motors: expansible chamber type – Plural relatively movable or rigidly interconnected working... – With means for proportioning motive fluid supply to plural...
Patent

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Linear excavation control apparatus for a hydraulic power shovel

Excavating – Ditcher – Condition responsive
Patent

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Profile ID: LFUS-PAI-P-874989

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