Plastic and nonmetallic article shaping or treating: processes – Recycling of reclaimed or purified process material – Of process trim or excess blanked material
Reexamination Certificate
2008-07-01
2008-07-01
Heitbrink, Jill L (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Recycling of reclaimed or purified process material
Of process trim or excess blanked material
C264S039000, C264S328100, C425S557000, C425S568000
Reexamination Certificate
active
07393479
ABSTRACT:
An injection molding three way shut off valve assembly and method in which the three way valve assembly is configured to be disposed to control a flow of a molten material from an injection unit to a runner system. Preferably, the valve assembly has a valve plunger configured to be disposed between the injection unit and the runner system; the valve plunger having a flow-through channel and a purge channel. Movement structure is configured to control the position of the valve plunger between (i) a molten material flow position where the molten material flows through the flow-through channel, (ii) a molten material blocked position where the molten material is blocked from flowing through the flow-through channel, and (iii) a molten material purge position where the molten material flows through the purge channel, without disconnecting the injection unit from the runner system.
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International Search Report for PCT/CA2005/001497, dated Jan. 19, 2006, three pages, related to the above-identified US patent application.
Heitbrink Jill L
Husky Injection Molding Systems Ltd.
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