Patent ID: 8322448

Claim:
A device for removing a plug in a production pipe comprising a plug casing for positioning in a pipe, said casing having an annular seat for receiving a plug of crushable material thereon; a ring-shaped casing disposed concentrically within said plug casing and having a plurality of axially disposed slits extending upwardly from a lower edge thereof and a radially inward extending flange at a lower end thereof for surrounding a plug of crushable material on said seat of said plug casing; and a piston within said plug casing for engaging and moving said flange of said ring-shaped casing radially inwardly in response to an axial movement of said piston relative to said ring-shaped casing whereby said flange of said ring-shaped casing is able engage and penetrate a plug of crushable material on said seat of said plug casing to cause crushing thereof.