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US 8,281,880 B2Granted
Expandable tool for an earth boring system
OwnerDavid R. Hall, Scott S. Dahlgren +1inventors
InventorsDavid R. Hall, Scott S. Dahlgren, Jonathan Marshall
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Abstract
In one aspect of the present invention an expandable tool for an earth boring system comprises a mandrel comprising a tubular body and an outer diameter, a plurality of blades disposed about the outer diameter, and a slidable sleeve positioned around the outer diameter and capable of manipulating the plurality of blades into collapsed and expanded positions.
Claims19
An expandable tool for an earth boring system, comprising:
- a mandrel comprising a tubular body and an outer diameter;
- a plurality of blades disposed about the outer diameter;
- and
- a slidable sleeve positioned around the outer diameter and capable of manipulating the plurality of blades into collapsed and expanded positions;
- the slidable sleeve comprises a plurality of interchangeable sections which combine to form a complete toroid around the outer diameter.
2 more elements
An expandable tool for an earth boring system, comprising:
- a mandrel comprising a tubular body and an outer diameter;
- a plurality of blades disposed about the outer diameter;
- and
- a slidable sleeve positioned around the outer diameter and capable of manipulating the plurality of blades into collapsed and expanded positions;
- wherein a plurality of channels are disposed on interior and exterior surfaces of at least one blade of the plurality of blades;
- and
- wherein a wedge is formed between a plurality of channels disposed on at least one fin of a plurality of fins and a plurality of channels disposed on the slidable sleeve when at least one blade of the plurality of blades are in an expanded position.
4 more elements
Dependencies are inferred from the claim text.