Dual containment tubing cutter

A C-shaped tubing cutter to snap onto and circumferentially grasp plastic tubing to facilitate the rotational cutting of the tubing, the cutter comprising:

• a cutter body having a front piece removably securable to a back piece such that securement of the front piece and back piece form the body;
• a C-shaped grasping portion formed in the body, the C-shaped grasping portion having a tube receiving region, an opening, and a bottom portion opposite the opening, the opening spanning a distance generally less than the width of the tube receiving region, such that the C-shaped grasping portion receives the plastic tubing with snap engagement and securely retains the plastic tubing during the cutting of the tubing;
• a gripping portion formed in the body by at least one arcuate depression for human handling of the cutter;
• and
• a fixed blade secured between the front and back pieces of the body within a blade recessed portion such that a chordal portion of the blade extends into the grasping portion and across the bottom portion whereby rotational movement of the engaged cutter around the outer surface of the tubing facilitates cutting.

A tubing cutter for cutting tubing of a specified diameter, a specified wall thickness and having the cutter comprising:

• a body comprising a pair of body pieces each having a face, the body pieces attachable to each other at the faces, at least one of the faces of the body pieces having a recess;
• a fixed cutter blade sandwiched between the two body pieces in said recess and having a chordal portion;
• the body having a fixed and integral C-shaped grasping portion configured for extending more than half way around the circumferential surface of the tubing of the specified diameter;
• and
• the C-shaped grasping portion defining a tubing receiving region, an opening, and a bottom blade portion distal and opposite the opening, the tube receiving region having a width generally greater than the opening, the chordal portion of the cutter blade positioned to extend across the bottom blade portion and into the tubing receiving region a distance less than the specified wall thickness of the tubing.

A combination tubing cutter and dual containment tubing comprising an outer tubing of a specified diameter, a specified wall thickness, the tubing cutter for cutting tubing only, the cutter comprising:

• a body comprising a pair of body pieces each having a face, the body pieces attachable to each other at the faces, at least one of the faces of the body pieces having a recess;
• a fixed cutter blade sandwiched between the two body pieces in said recess and having a chordal portion;
• the body having an integral C-shaped grasping portion configured for extending more than half way around the circumferential surface of the tubing of the specified diameter;
• and
• the C-shaped portion defining a tubing receiving region and an opening, the tube receiving region having a bottom portion directly opposite the opening and a width generally greater than the opening, the chordal portion of the cutter blade positioned to extend across the bottom portion and into the tubing receiving region a distance less than the specified wall thickness of the tubing.