Patent ID: 8113819

Claim:
A back-up device ( 50 , 150 , 250 , 350 ) that is configured to provide a structural support, in use, between a manifold ( 14 , 214 , 314 ) and a housing member ( 12 ) within a melt distribution apparatus ( 10 , 110 , 210 , 310 ) of an injection molding system, the back-up device ( 50 , 150 , 250 , 350 ) being associated, in use, with a valve-gate apparatus ( 30 , 130 , 230 , 330 ) within a nozzle drop ( 16 , 116 , 216 , 316 ), the back-up device ( 50 , 150 , 250 , 350 ) comprising: a cold-side member ( 60 , 160 , 260 , 360 ) formed from a first material; a hot-side member ( 70 , 270 , 370 ) formed from a second material; the first material being more thermally conductive than the second material; the cold-side member ( 60 , 160 , 260 , 360 ) being configured to be thermally connectable, in use, with the housing member ( 12 ) and the hot-side member ( 12 ); the hot-side member ( 70 , 270 , 370 ) being configured to be thermally connectable, in use, with the manifold ( 14 , 214 , 314 ) and the cold-side member ( 60 , 160 , 260 , 360 ); and the hot-side member ( 70 , 270 , 370 ) being configured to prevent the cold-side member ( 60 , 160 , 260 , 360 ) from directly contacting the manifold ( 14 , 214 , 314 ); wherein the hot-side member ( 70 , 270 , 370 ) reduces heat transfer between the manifold ( 14 , 214 , 314 ) and the cold-side member ( 60 , 160 , 260 , 360 ).