Patent ID: 7416402

Claim:
An injection molding system comprising: an injection molding machine including a machine nozzle for injecting a melt stream; a manifold having at least one manifold melt inlet for receiving the melt stream and having at least one melt channel for distributing the melt stream; and an anti-drool mechanism positioned between the machine nozzle and the manifold melt inlet including, a melt passage for communicating the melt stream from the machine nozzle to the manifold melt inlet, a fixed pin disposed entirely within the melt passage and sized so that the melt stream flows around the pin, the pin having a head portion, and a movable shut-off collar disposed at least partially within the melt passage and surrounding the pin, wherein a sealing surface of the shut-off collar contacts a sealing surface of the head portion of the pin to stop the flow of the melt stream through the melt passage.