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
2006-07-11
2008-11-25
Gupta, Yogendra (Department: 1791)
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...
C425S564000, C425S567000, C425S574000
Reexamination Certificate
active
07455515
ABSTRACT:
A sprue bar nozzle assembly for controlling flow of melt through conduits of a mold assembly for injection molding comprises a sprue bar extension and nozzle, the sprue bar extension comprising means for adjusting the overall length of the sprue bar nozzle assembly and the nozzle comprising a nose comprising a seating surface for mating engagement with a mating surface of a mating segment of a melt conveying conduit and a slide valve, an open position of the slide valve permitting melt to flow through the sprue bar nozzle assembly and a closed position preventing melt from flowing through the sprue bar nozzle assembly, the slide valve being biased to a closed position by a biasing means and being driven to the open position by forces applied to the nose of the nozzle as a result of closure of an associated mold assembly.
REFERENCES:
patent: 3295169 (1967-01-01), Moslo
patent: 3401426 (1968-09-01), Evans
patent: 3934626 (1976-01-01), Hall
patent: 3941540 (1976-03-01), Driscoll et al.
patent: 4073469 (1978-02-01), Kodric
patent: 4076485 (1978-02-01), Sokolow
patent: 4082226 (1978-04-01), Appleman et al.
patent: 4212626 (1980-07-01), Gellert
patent: 4333608 (1982-06-01), Hendry
patent: 4427361 (1984-01-01), Saito
patent: 4678427 (1987-07-01), Fritzsche
patent: 4971747 (1990-11-01), Sorensen
patent: 5012839 (1991-05-01), Rogers et al.
patent: 5225217 (1993-07-01), Wisen et al.
patent: 5229145 (1993-07-01), Brown et al.
patent: 5380188 (1995-01-01), Ullisperger
patent: 5458843 (1995-10-01), Brown et al.
patent: 6050544 (2000-04-01), Meronek
patent: 6348171 (2002-02-01), Dewar et al.
patent: 6409955 (2002-06-01), Schmitt et al.
patent: 6575731 (2003-06-01), Olaru et al.
patent: 360310 (1962-02-01), None
patent: 2831644 (2003-05-01), None
patent: 498653 (1939-01-01), None
patent: 51-102047 (1976-09-01), None
patent: 08020043 (1996-01-01), None
patent: 2006062539 (2007-12-01), None
Written Opinion of the International Searching Authority issued in PCT/US2007/004647.
Patent Abstracts of Japan, Abstract of JP08020043.
Eigler Frank J.
Pruden Trevor
Steil Frederick G.
D-M-E Company
Gregg John W.
Gupta Yogendra
Luk Emmanuel S
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