Conveyance member removal method and device
AssigneeJSM Construction Limited
InventorJohn Fitzgerald
Life of this patent
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Abstract
A device for use in removing a conveyance member from a material includes a displacement element (12, 1012) and a self-propelling driving element. The displacement element (12, 1012) is for being placed at least partly around a conveyance member (16) and for displacing material as the displacement element (12, 1012) is advanced along a conveyance member (16). The driving element is coupled to and movable with the displacement element (12, 1012) to advance the displacement element along a conveyance member (16).
Claims18
-17. (canceled)
A removal device for removing a conveyance member from a material, the removal device including:
- a. a displacement element configured to fit at least partially about a circumference of the conveyance member, and
- b. a driving element coupled to the displacement element, the driving element having a piston chamber with a piston therein, wherein motion of the piston within the piston chamber moves the displacement element along the conveyance member.
A method for removing a conveyance member from a material, the method including:
- a. fitting the displacement element of claim 1 at least partially about a circumference of a conveyance member situated within the material, the displacement element being fit at or near a first end of the conveyance member;
- b. moving the piston of claim 1 within the piston chamber, thereby moving the displacement element along the conveyance member and through the material.
A removal device for removing a conveyance member from a material, the removal device including:
- a. a displacement element having a body extending about at least a major portion of a passageway, whereby the displacement element may be fit at least partially about a circumference of the conveyance member, wherein the displacement element has a piston chamber defined therein, the piston chamber extending about at least a major portion of a circumference of the passageway;
- b. a piston situated within the piston chamber, wherein motion of the piston within the piston chamber moves the displacement element along the conveyance member.
Dependencies are inferred from the claim text.