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US 4,155,242 AGranted
Core tools
AssigneeDouble-E Inc.
InventorBruce E. Peterson
Life of this patent
Estimating the term…
Abstract
A tool for insertion into a core including a pair of pivotally connected levers having forwardly-extending jaws for insertion into the core and rearwardly-extending actuating portions to which the opposite ends of a flexible-wall fluid actuator are fixed for applying force to the actuating arms and pivotally expanding the jaws.
Claims13
A core tool comprising:
- a pair of pivotally connected levers having forwardly-extending jaws for insertion into a core and rearwardly extending actuating portions, said jaws being pivotally movable between a closed position in which the outer surfaces of jaws converge forwardly and an open position in which the jaws are pivoted relatively apart;
- a flexible-walled actuator positioned between said actuating portions and having its end fixedly connected to the actuating portions and arranged to apply force to the actuating portions for pivoting the jaws from their closed position towards their open position when fluid under pressure is applied to the actuator.
Dependencies are inferred from the claim text.