Molding system including body overlapping and sealing...

Details Molding system including body overlapping and sealing... Molding system including body overlapping and sealing...

2006-10-12

2009-08-18

Ewald, Maria Veronica D (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With coupling between charger and mold

C425S19200R, C425S587000

Reexamination Certificate

active

07575428

ABSTRACT:
Molding system for filling mold with molding material, comprising: extruder, including: barrel configured to process molding material being pushable from barrel; barrel head operatively attached to barrel; screw disposed in the barrel; and screw drive connected to screw; stationary platen support a stationary mold portion; movable platen configured to be movable relative to the stationary platen; and body overlapping and sealing, at least in part, barrel and barrel head, body including: flange received at interface between barrel and barrel head, flange abutting end of barrel, flange abutting end of barrel head; and outer surface protruding from flange into interior of barrel, outer circumferential surface protruding from flange into interior of barrel head, outer surface sealing and overlapping against: (i) inner surface of barrel, and (ii) inner surface of barrel head; and body having coefficient of thermal expansion being: (i) greater than barrel, and (ii) greater than barrel head.

REFERENCES:
patent: 4422838 (1983-12-01), Iwawaki et al.
patent: RE34017 (1992-08-01), Kuhne
patent: 5554395 (1996-09-01), Hume et al.
patent: 6494703 (2002-12-01), Kestle et al.
patent: 6942006 (2005-09-01), Kono
patent: 2005/0255189 (2005-11-01), Manda et al.
patent: 9500312 (1995-01-01), None

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