Rotary valve assembly for an injection nozzle

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

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Details

C425S564000

Reexamination Certificate

active

07614871

ABSTRACT:
A rotary valve assembly for an injection unit is provided, having a valve body, defining a melt channel for a working fluid. At least one end cap is mounted to the valve body, the valve body and the at least one end cap cooperatively defining a valve seat intersecting the melt channel in a generally traverse direction, the valve seat having a wider portion and a narrower portion. A spool defines an orifice, the spool being rotatably mounted within the valve seat, and is movable between an open position where the orifice is aligned with the melt channel and a closed position where the orifice is misaligned with the melt channel.

REFERENCES:
patent: 4054273 (1977-10-01), Neuman
patent: 4140238 (1979-02-01), Dawson
patent: 4632652 (1986-12-01), Farrell
patent: 4983117 (1991-01-01), Von Buren et al.
patent: 5035605 (1991-07-01), Dinerman et al.
patent: 5433594 (1995-07-01), Hehl
patent: 5460508 (1995-10-01), Ohno et al.
patent: 0494304 (1992-07-01), None
patent: 0494304 (1994-09-01), None
patent: 57120407 (1982-07-01), None
patent: 9099460 (1997-04-01), None
patent: 9123216 (1997-05-01), None
patent: 09132218 (1997-05-01), None
International Search Report, 3 pages.
International Search Report, 3 pages, 1990.

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