TOOL WITH HYDRAULIC SYSTEM FOR REGENERATIVE EXTENSION AND TWO-SPEED OPERATION

Abstract: embodiments of the invention provide a hydraulic tool including a hydraulic actuator cylinder, a piston, a fluid reservoir, a pump, a regeneration check valve, and a pilot-operated valve. the regeneration check valve is disposed in a regenerative extension fluid path that fluidly couples a first and second chamber of the hydraulic actuator cylinder. the pilot-operated valve is disposed in a power extension fluid path that fluidly couples the second chamber to a fluid reservoir.

Inventor(s): James G. Ballard

CPC Classification: B25F5/005 (Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for)

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