Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With accumulator – trap chamber – or serially arranged valves...
Patent
1994-09-26
1996-04-23
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With accumulator, trap chamber, or serially arranged valves...
425561, 425562, 425564, B29C 4502
Patent
active
055097979
ABSTRACT:
An injection apparatus having a pressure holding device of a novel constitution, capable of preventing flow-out and decrease of resin when holding pressure, and eliminating instability in pressure holding due to volume changes, by forming the front end of the pressure holding plunger obliquely disposed between front and rear resin paths or penetrating a passage between the resin paths.
REFERENCES:
patent: 5071341 (1991-12-01), Poehlsen
Heitbrink Tim
Nissei Plastic Industrial Co. Ltd.
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