Patent ID: 7963690

Claim:
A dispenser suitable for mixing and dispensing a two- or more-part curable composition comprising: a) a dispenser body having a fore end and an aft portion; b) a manifold integrated into and supported by the dispenser body and having (i) an ending at an aft end and comprising a plurality of manifold inlets, at least one for each part of the composition to be mixed, (ii) a generally cylindrical fore region ending with a fore face having a plurality of manifold outlets at its fore end and a seal means associated with its outer circumference at or near its fore end, and (iii) a central region defined by a plurality of channels through the manifold, each channel in fluid communication with a manifold inlet and at least one manifold outlet; c) a dispenser outlet associated with the fore end of the dispenser body; d) a mixer means integrated into and supported by the dispenser body and intermediate said manifold and said dispenser outlet; and e) a reaction tube pathway extending from a reaction tube reservoir to the dispenser outlet, which reaction tube reservoir is capable of storing a continuous length of reaction tubing and is either integrated into said dispenser or is ancillary to the dispenser but configured to allow reaction tubing to be fed into the dispenser: said reaction tube pathway circumferentially encasing the fore region of the manifold, including, in particular, the seal means, and defining a flow path for the curable composition from the fore face of the manifold to the dispenser outlet, further comprising (i) feed tubes in fluid connection with the manifold; (ii) a reaction tubing opening means in the dispenser body and positioned along the reaction tube pathway aft of the feed tubes; and (iii) guide and seam forming means associated with or integrated into the dispenser body and positioned along the reaction tube pathway about the feed tubes but aft of the seal means, said reaction tubing opening means adapted to open the seam of a preformed, seamed and reseamable flexible reaction tubing, thereby separating the opposing edges of the seam; said guide and seam forming means adapted to (a) allow each seam edge to pass on opposite sides of the feed tubes, (b) bring the opposing seam edges together again at a point forward of the feed tubes, and (c) reform the seam at a point aft of the seal means.