| 主权项 |
1. An apparatus for removing a fitting from a pipe having a central axis, the apparatus comprising:
a guide member defining a guide passage with a longitudinal axis; means for supporting the guide member within at least a portion of the pipe with the longitudinal axis of the guide passage of the guide member in a coaxial relationship with the central axis of the pipe, wherein the means for supporting the guide member comprises:
a top member connected to the guide member;a bottom member positioned in a spaced apart parallel relationship to the top member, the top and bottom members being movable relative to one another along the longitudinal axis of the guide member;an expandable gripping member positioned between the top member and the bottom member such that the gripping member is expandable in a radially outward direction so as to grip the interior of the pipe upon moving at least one of the top member and the bottom member so as to compress the expandable gripping member between the top and bottom members; andat least one adjustment means adapted to move the top member and bottom member relative to one another along the longitudinal axis of the guide member,wherein the at least one adjustment means further comprises:
a fastener adapted to fasten either the top member or the bottom member to the guide member thereby defining a fixed member and a non-fixed member; andat least one securing member positioned adjacent to the non-fixed member and adapted to move the non-fixed member towards the fixed member thereby compressing the expandable gripping member between the fixed and non-fixed members; a rotary hole saw having a cylindrical wall provided with a plurality of cutting teeth on an open end thereof and a central axis of rotation about which the cylindrical wall and the plurality of cutting teeth are rotatable, the cylindrical wall defining a cylindrical chamber; and a guide rod connected to the rotary hole saw such that the guide rod extends through the cylindrical chamber of the hole saw and beyond the open end thereof in coaxial alignment with the central axis of rotation of the hole saw, the guide rod being slidingly receivable in the guide passage of the guide member. |
