Patent attributes
A coupling and a process of molding the coupling is disclosed for interconnecting a primary and a secondary tube. The process comprises the steps of inserting a primary core pin into the primary tube. A secondary core pin is inserted into the second tube to abut with the primary core pin. The assembled tubes and core pins are placed within a mold cavity and a thermoplastic material is injected for forming the coupling. The coupling and the interconnected tubes are removed from the mold cavity. The secondary core pin is disengaged from the secondary core pin to be removed by passing the secondary core pin through the secondary tube. The primary core pin is removed by passing the secondary core pin through the primary tube. The coupling forms a smooth interconnection of the inner cross-sections of the first and second tubes.
