<12) United States Patent <10) Patent N0.: US 6,910,877 B2 Berceanu et al. 45 Date of Patent: Jun. 28 2005 9 (54) ANTI-DROOL SPRUE GATED CROSS OVER (56) References Cited NOZZLE U.S. PATENT DOCUMENTS (75) Inventors: Mihai Berceanu, Thornhill (CA); Gary * _ Fang, Markham (CA) 2,529,146 A 11/1950 Feitl ......................... .. 425/549 2,808,627 A * 10/1957 Willbald 425/567 (73) Assignee: Stackteck Systems Limited, Brampton 6,454,558 B1 * 9/2002 Gellert ..................... .. 425/567 (CA) * cited by examiner ( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 primary Examiner_Tim Heitbrink U-S-C 154(b) by 209 daY5~ (74) Attorney, Agent, or Firm—R. Lewis Gable; Cowan, Liebowitz & Latman, P.C. 21 A l. N .: 10 366 284 ( ) pp O / ’ (57) ABSTRACT (22) Filed: Feb. 13, 2003 _ _ _ _ _ _ According to the present invention a coding plate is inter(65) Prim‘ Pllbllcatlllll Data spersed between first and second respective inlet and outlet Us 2004/0142064 A1 Jul_ 22’ 2004 cross over nozzle parts. The cooling plate engages ends of the cross over nozzles during mould filling and provides a (30) Foreign Application Priority Data melt transfer passage therebetween. Once the mould is filled, an L‘lZ§§§§“3;‘JZii‘§ i§i‘§;°Ofi‘§;‘2ZEi§§%i‘i§3E‘ 5111111‘ 11115: (51) Int. Cl.7 B29C 45/74 Accordingly melt solidification in the sprue is assured with (52) U.S. Cl. ........... .. 425/547; 264/328.11; 264/328.15; niere eertainty than Prier art designs enabling relatively faX 425/549; 425/567 mould cycling with minimal risk of drool. (58) Field of Search ............................... .. 425/567, 549,
425/547, 570; 264/328.14, 328.15, 328.11
10 Claims, 3 Drawing Sheets
