Patent ID: 7326897

Claim:
A clip on tubing welder for making a seal across a length of heat weldable tubing, said welder comprising in combination: a) a source of a gas under pressure; b) a source of electrical signals; c) an upper frame, a lower frame and pivot means for pivotally interconnecting said upper and lower frames; d) an expandable and contractible pneumatic bladder responsive to said source of a gas under pressure for urging pivotal movement of said upper and lower frames relative to one another to engage the tubing therebetween; e) a pair of spaced apart grippers disposed in said lower frame in operative engagement with a further pair of spaced apart grippers disposed in said upper frame for gripping the tubing to be sealed; f) a first jaw disposed in said lower frame intermediate said pair of grippers and a second jaw disposed in said upper frame intermediate said pair of further grippers and in opposed relationship to said first jaw for compressing tubing placed therebetween and effecting a seal across the tubing; g) an element for heating the tubing to effect a seal across the tubing and being disposed in at least one jaw of said first and second jaws, said element being in operative engagement with said source of electrical signals; and h) a cooling assembly for cooling at least one jaw of said first and second jaws on completion of the seal across the tubing in response to signals from said source of electrical signals and operatively responsive to said source of gas under pressure to provide a flow of gas proximate said first and second jaws.