Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – For extrusion or injection type shaping means
Reexamination Certificate
2006-09-12
2006-09-12
Smith, Duane (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
For extrusion or injection type shaping means
C425S209000, C425S558000
Reexamination Certificate
active
07104775
ABSTRACT:
Disclosed is an injection unit having a rotatable device for preventing reverse flow. To connect first flow channels formed in a spacer and second flow channels formed in a screw head when the metering is performed, and prevent reverse flow of resin by cutting off the first flow channels and the second flow channels when the resin is injected, the injection unit has a torsion spring as spring means between a shaft of the screw head and a screw, thereby rapidly preventing movement of the melted resin by restoring force of the spring when the metering of the resin is finished.
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Han Kyoung Hun
Jeon Han Soo
Kim Dong Sung
Kim Jin Young
Park Young Jin
LG Cable Ltd.
Luk Emmanuel S.
McCarter & English LLP
Smith Duane
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