Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal... – Forming baffle – bottleneck – or handle
Reexamination Certificate
2006-12-26
2006-12-26
Davis, Robert B. (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to shape parison directly by internal...
Forming baffle, bottleneck, or handle
C425S532000, C425S536000, C425S538000, C425S540000
Reexamination Certificate
active
07153127
ABSTRACT:
A mold system for blow molding hollow plastic containers includes an extruder for providing a hollow tube of plastic material having a longitudinal axis. Three mold segments include at least two mold segments that are movable against the third mold segment, in directions perpendicular to the tube axis, between a closed position in which the mold segments form a hollow mold cavity in which the tube is captured and an open position spaced from the tube axis. A blow pin is disposed on one of the mold segments to pierce the tube in the closed position of the mold segments. One of the mold segments may be a mold core movably mounted on a second of the mold segments, and cylinders are mounted on the second mold segment for moving the mold core between an extended position and a retracted position with respect to the second mold segment. The blow pin may be movably mounted on the mold core.
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Safian John W.
Struble Douglas S.
Burdett James R.
Davis Robert B.
Graham Packaging Plastic Products Inc.
Smith Stuart I.
Venable LLP
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