Casing cutter
AssigneeInternational Enterprises, Inc.
InventorMerle W. Aulenbacher
Life of this patent
Estimating the term…
Abstract
A casing cutter adapted to be lowered into a well to cut a plurality of casings cemented in the well and having a body with a central passageway therethrough with a piston slidably mounted therein which piston is provided with a restriction so that the piston moves axially within the body, a plurality of blades which are connected to the piston, and mounted in openings in the body, and guide means between the blades and the body whereby when the piston is actuated the blades are moved outwardly in a generally arcuate path so that they cut a very narrow annular space, which is substantially only that space which the blade displaces in its outer position.
Claims16
A cutting tool comprising:
- a housing member having a radial opening therethrough;
- a cutting blade member movably mounted on said housing member for at least partial extension and retraction through said opening, said blade member having a cutting portion;
- actuating means within said housing member and longitudinally movable in said housing member;
- connection means pivotally connecting said blade member to said actuating means distal said cutting portion of said blade member;
- and
- guide means cooperative with said blade member for translating a portion of the longitudinal force exerted on said blade member by said actuating means into a radial force whereby said blade member is moved in a path having both longitudinal and radial components with respect to said housing member upon said longitudinal movement of said actuating means;
- wherein said connection means is at least partially circumferentially offset with respect to said guide means.
Dependencies are inferred from the claim text.