Patent ID: RE38920

Claim:
In an injection molding apparatus having a heated melt distribution manifold ( 16 ) and a plurality of nozzles ( 10 ) mounted in a mold ( 12 ), each nozzle ( 10 ) having a threaded rear end ( 46 ) and a melt bore ( 102 ) extending therethrough to convey melt to a gate ( 18 ) leading to a cavity ( 20 ), the melt distribution manifold ( 16 ) having a front face ( 56 ) and a melt passage ( 14 ) extending therethrough, the melt passage ( 14 ) having a plurality of branches ( 96 ) extending outwardly from a common inlet portion ( 94 ) to an outlet ( 98 ) on the front face ( 56 ) of the melt distribution manifold ( 16 ) aligned with the melt bore ( 102 ) extending through one of the nozzles ( 10 ), the improvement comprising: each nozzle ( 10 ) extending from a mounting base ( 50 ) having a rear end ( 54 ) secured against the front face of the melt distribution manifold ( 16 ), each mounting base ( 50 ) having a frontwardly open threaded seat ( 48 ) and a melt bore ( 100 ) extending rearwardly therethrough from the threaded seat ( 48 ) to the rear end ( 54 ), the rear end ( 46 ) of each nozzle ( 10 ) being screwed into the threaded seat ( 48 ) of one of the mounting bases ( 50 ) with the melt bore ( 100 ) through the mounting base ( 50 ) extending from one of the outlets ( 98 ) of the melt passage ( 14 ) to the aligned melt bore ( 102 ) extending through said nozzle ( 10 ).