Tubular member cutting tool

摘要

A cutting tool for cutting pipe or the like from the inside out includes a housing assembly. A first blade actuating wedge assembly is inside the housing assembly and is movable along a longitudinal axis. The first blade actuating wedge assembly has multiple first tapered blade actuating wedges. Each cutting blade is supported in a manner such that a position of the cutting blade relative to the housing assembly along the longitudinal axis is substantially fixed. Each cutting blade is coupled to a respective one of the first tapered blade actuating wedges such that movement of the first tapered blade actuating wedge assembly along the longitudinal axis causes each cutting blade in the first plurality of cutting blades to move perpendicular to the longitudinal axis.

主权项

1. A cutting tool comprising:
a housing assembly; a first blade actuating wedge assembly inside the housing assembly and movable relative to the housing assembly along a longitudinal axis, the first blade actuating wedge assembly comprising a plurality of first tapered blade actuating wedges; and a first plurality of cutting blades, each cutting blade in the first plurality of cutting blades being supported in a substantially fixed position relative to the housing assembly along the longitudinal axis, wherein each cutting blade in the first plurality of cutting blades is coupled to a respective one of the first tapered blade actuating wedges, wherein movement of the first tapered blade actuating wedge assembly along the longitudinal axis causes each cutting blade in the first plurality of cutting blades to move perpendicular to the longitudinal axis, a second blade actuating wedge assembly inside the housing assembly and movable relative to the housing assembly along the longitudinal axis, the second blade actuating wedge assembly comprising a plurality of second tapered blade actuating wedges; and a second plurality of cutting blades, each cutting blade in the second plurality of cutting blades being supported in a substantially fixed position relative to the housing assembly along the longitudinal axis, wherein each cutting blade in the second plurality of cutting blades is coupled a respective one of the second tapered blade actuating wedges, wherein movement of the second tapered blade actuating wedge assembly along the longitudinal axis causes each cutting blade in the second plurality of cutting blades to move perpendicular to the longitudinal axis, wherein the first blade actuating wedges are tapered in a first direction substantially parallel to the longitudinal axis and the second blade actuating wedges are tapered in a second direction, opposite the first direction, substantially parallel to the longitudinal axis.