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
2007-08-07
2007-08-07
Gupta, Yogendra N. (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...
C425S562000, C425S566000
Reexamination Certificate
active
11059277
ABSTRACT:
A nozzle controls flow of melt in injection molding equipment by passive actuation with opening and closing of a mold assembly. The nozzle comprises a valve pin having a pin passage therethrough movably supported within a nozzle passage and a contact arm transverse to and extending beyond the nozzle passage, the valve pin sealingly engaging the nozzle passage. Biasing means biases the valve pin to a closed position preventing passage of melt through the nozzle. The contact arm effects movement of the valve pin to an open position when closing of the mold assembly exerts a force on the contact arm to overcome the biasing means. A mold arrangement of plural mold assemblies comprises pairs of nozzles of the invention to control flow of melt through mating conduit segments between an injection unit and at least one mold assembly, the nozzles arranged and configured for seating engagement with abutment of the conduit segments.
REFERENCES:
patent: 3295169 (1967-01-01), Moslo
patent: 3719310 (1973-03-01), Hunten
patent: 3934626 (1976-01-01), Hall
patent: 3941540 (1976-03-01), Driscoll et al.
patent: 4073469 (1978-02-01), Kodric
patent: 4082226 (1978-04-01), Appleman et al.
patent: 4678427 (1987-07-01), Fritzsche
patent: 4822269 (1989-04-01), Kamiyama et al.
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: 6348171 (2002-02-01), Dewar et al.
patent: 6575731 (2003-06-01), Olaru et al.
patent: 6733274 (2004-05-01), Seta et al.
patent: 2002/0140132 (2002-10-01), Seta et al.
patent: 2336236 (1977-07-01), None
patent: 08336865 (1996-12-01), None
patent: 2003127186 (2003-05-01), None
Eigler Frank J.
Pruden Trevor
Steil Frederick G.
D-M-E Company
Gregg John W.
Gupta Yogendra N.
Luk Emmanuel S.
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