Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container
Reexamination Certificate
2007-10-19
2008-12-30
Harmon, Christopher (Department: 3721)
Manufacturing container or tube from paper; or other manufacturi
Container making
Rigid container
C493S127000, C493S143000, C493S167000, C493S210000
Reexamination Certificate
active
07470225
ABSTRACT:
A paper board blank is formed into a tray having a double glued side wall construction for providing a desirable strength to the tray. A platen drives the blank through forming rails which fold the blank into a partially formed tray having bottom, end and side walls, and inside corner supports formed about the platen. After the platen is retracted, a first folding arm folds a top wall portion to a position generally parallel to the bottom panel. A second folding arm then folds end fold portions of outside corner supports into a passage formed between a compression plate and a fixed guide plate, wherein the fixed guide plate provides a guiding surface. The compression plate is then biased against each of the side fold portions for compressing the side fold portions against the side panels to form the tray.
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Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Harmon Christopher
R&L Manufacturing
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