Tubing cutter

A hand operated tool for use in cutting tubing, pipe, and other cylindrical materials, said tool comprising:

• a frame having a first frame half integrally formed of a first jaw and first handle and a second frame half integrally formed of a second jaw and second handle, with said frame further including a pivot fulcrum disposed between said first frame half and said second frame half and pivotally connecting said first frame half and said second frame half together in a relationship wherein movement of each said handle toward one another simultaneously causes each said jaw to move away from one another in an arcuate path about said pivot fulcrum, and movement of each said handle away from one another simultaneously causes each said jaw to move toward one another in an arcuate path about said pivot fulcrum;
• clamping spring means disposed within said frame and urging each said jaw together with sufficient pressure to provide for cutting of material by said tool;
• said first jaw including first and second guide roller pins immovably affixed therein and including spaced apart first and second guide rollers having axes disposed laterally within said first jaw, with said axes of said first and second guide rollers having a common center line extending therebetween, and with said guide roller pins and said guide rollers comprising a guide roller assembly;
• a cutting blade assembly including a rotating cutting blade with an axis disposed parallel to said axes of said guide rollers;
• said cutting blade assembly and said guide roller assembly having cooperating means slidably securing said cutting blade assembly to said guide roller assembly, and said cutting blade assembly further being devoid of direct connection means to said first jaw and said second jaw, except by said cooperating means slidably securing said cutting blade assembly to said guide roller assembly affixed within said first jaw;
• said cooperating means slidably securing said guide roller assembly to said cutting blade assembly further providing for the constant disposition of said cutting blade axis along a straight path defining a perpendicular bisector to said common center line of said first and second guide roller axes, thereby maintaining an equal distance from said first guide roller to said cutting blade and from said second guide roller to said cutting blade as said cutting blade assembly is moved relative to said guide roller assembly, whereby;
• sufficient pressure is exerted upon each said handle to force each said handle together against said clamping spring means and to spread each said jaw from one another and further to allow said cutting blade to be moved apart from said guide rollers, cylindrical material is placed between said guide rollers and said cutting blade, the pressure on each said handle is relaxed to allow each said handle to spread apart relative to one another and to cause each said jaw to close about the cylindrical material with said cutting blade assembly and the cylindrical material being clamped between said second jaw and said guide rollers to apply cutting pressure to the cylindrical material, and said tool and said cylindrical material are relatively rotated about one another to cut the material.