Sprue bushing anti-drool device

Details Sprue bushing anti-drool device Sprue bushing anti-drool device

2004-03-31

2008-08-26

Tucker, Philip C (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

C425S562000

Reexamination Certificate

active

07416402

ABSTRACT:
An anti-drool mechanism suitable for use in an injection molding system is provided herein. An injection molding machine includes a retractable machine nozzle for injecting a melt stream into a manifold. Between the machine nozzle and the manifold is an anti-drool mechanism, which includes a melt passage and a fixed pin disposed within the melt passage. The fixed pin is sized so that the melt stream will flow around the pin. The fixed pin has a head portion configured to engage with the machine nozzle and includes a first sealing surface. An actuated shut-off collar is also disposed within the melt passage, surrounding the pin, and includes a second sealing surface configured to cut off the flow of the melt stream when in contact with the first sealing surface.

REFERENCES:
patent: 2514390 (1950-07-01), Hagen
patent: 2928125 (1960-03-01), Smucker et al.
patent: 3049757 (1962-08-01), Hagerborg
patent: 3146282 (1964-08-01), Ninneman
patent: 3270115 (1966-08-01), Nouel
patent: 3315899 (1967-04-01), Quarve
patent: 3719310 (1973-03-01), Hunten
patent: 3758248 (1973-09-01), Drazick
patent: 3902665 (1975-09-01), Hendry
patent: 3934626 (1976-01-01), Hall
patent: 4273525 (1981-06-01), Reitan
patent: 4299791 (1981-11-01), Aoki
patent: 4394117 (1983-07-01), Taylor
patent: 4674968 (1987-06-01), Durst
patent: 4678427 (1987-07-01), Fritzsche
patent: 4768283 (1988-09-01), Gellert
patent: 4899435 (1990-02-01), Trakas
patent: 4917594 (1990-04-01), Gellert et al.
patent: 4917595 (1990-04-01), Nakamura et al.
patent: 5012839 (1991-05-01), Rogers et al.
patent: 5094603 (1992-03-01), Gellert
patent: 5151025 (1992-09-01), Muller
patent: 5229145 (1993-07-01), Brown et al.
patent: 5370523 (1994-12-01), Kushnir
patent: 5458843 (1995-10-01), Brown et al.
patent: 5460510 (1995-10-01), Gellert
patent: 5464579 (1995-11-01), Brown et al.
patent: 5470219 (1995-11-01), Yokoyama et al.
patent: 5484275 (1996-01-01), Kushnir
patent: 5720433 (1998-02-01), Forker
patent: 5785915 (1998-07-01), Osuna-Diaz
patent: 5955121 (1999-09-01), Gellert et al.
patent: 5968562 (1999-10-01), Schad et al.
patent: 5975127 (1999-11-01), Dray
patent: 6062841 (2000-05-01), Gellert et al.
patent: 6135757 (2000-10-01), Jenko
patent: 6270711 (2001-08-01), Gellert et al.
patent: 6348171 (2002-02-01), Dewar et al.
patent: 6361300 (2002-03-01), Kazmer et al.
patent: 6413076 (2002-07-01), Dray, Sr.
patent: 6533021 (2003-03-01), Shibata et al.
patent: 6585505 (2003-07-01), Kazmer et al.
patent: 6739863 (2004-05-01), Olaru
patent: 6835060 (2004-12-01), Sicilia
patent: 6910877 (2005-06-01), Berceanu et al.
patent: 7182893 (2007-02-01), Olaru
patent: 2002/0121713 (2002-09-01), Moss et al.
patent: 2006/0204610 (2006-09-01), Nakaya et al.
patent: 1554847 (1970-01-01), None
patent: 55017569 (1980-02-01), None
patent: 60168619 (1985-09-01), None
patent: 60240425 (1985-11-01), None
patent: 5185473 (1993-07-01), None
patent: 2003127186 (2003-05-01), None
patent: WO 99/54109 (1999-10-01), None

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