Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including both heating and cooling means
Reexamination Certificate
2004-08-10
2008-10-14
Davis, Robert B (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including both heating and cooling means
C425S392000
Reexamination Certificate
active
07435073
ABSTRACT:
An apparatus for reforming an annular end sealing surface of a molded plastic container includes a head having an annular contact surface and a drive for bringing the annular contact surface into contact with the annular end sealing surface of the container. The head and the container do not rotate relative to each other during this contact reforming operation. Heat is applied through the contact surface to the end sealing surface while the surfaces are in contact to raise the temperature at the end sealing surface to at least the softening temperature of the plastic material, so that the end sealing surface is softened and reformed by heat and contact with the contact surface.
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Chisholm Brian J.
Geisinger Gregory A.
Davis Robert B
Graham Packaging Plastic Products Inc.
Knoble & Yoshida & Dunleavy LLC
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