4. Mining or in situ disintegration of hard material
  5. Expansible breaking-down devices
  6. Fluid-pressed element

William C. Cooley

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Apparatus for breaking rock or concrete

Mining or in situ disintegration of hard material – Expansible breaking-down devices – Fluid-pressed element
Patent

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Hydraulically powered actuator

Motors: expansible chamber type – Independently operated timer – delay – pattern or cyclic control – Independent distributor actuation for cyclic control
Patent

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Profile ID: LFUS-PAI-P-1742277

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