Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means between charger and mold to cut off flow of...
Reexamination Certificate
2006-03-28
2006-03-28
Heitbrink, Tim (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means between charger and mold to cut off flow of...
C425S566000
Reexamination Certificate
active
07018198
ABSTRACT:
The present invention relates to an injector device for injecting thermoplastic material. The device comprises a dispenser (8) feeding a transit passage (12) of an injector nozzle (7) with thermoplastic material, said passage opening out into the mold cavity (2) and being capable of being closed by a sliding needle (21). The needle (21) presents an extender (24) which passes through the dispenser (8) into ambient air via guide means (38) in order to co-operate with controlled means (30) for moving the needle (21). Sealing is provided between the extender (24) and the guide means (38) by the thermoplastic material itself, which material leaks between them from the dispenser (8) and accumulates in an annular groove (43) in one of them. The invention is applicable to injection molding devices.
REFERENCES:
patent: 4433969 (1984-02-01), Gellert
patent: 5387099 (1995-02-01), Gellert
patent: 2615282 (1976-11-01), None
patent: 0099088 (1984-01-01), None
patent: 1500630 (1967-11-01), None
patent: 2795993 (2001-01-01), None
Blakely & Sokoloff, Taylor & Zafman
Delachaux S.A.
Heitbrink Tim
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