Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means between charger and mold to cut off flow of...
Reexamination Certificate
2006-08-02
2010-11-30
Heitbrink, Tim (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means between charger and mold to cut off flow of...
Reexamination Certificate
active
07841856
ABSTRACT:
Injection system with closing rod (2) provided with a cleaning device (6, 7, 8) suitable for removing the powder of molten plastic that builds up in the movement areas of the closing rod (2), in particular in the thrust bearing (3), during the normal operation of a molding machine. Advantageously the system according to the invention avoids the limitation of the piston stroke and the subsequent blockage with time and thus also the blockage of the closing rod, considerably reducing the number of maintenance operations and thus increasing the productivity of the molding machine.
REFERENCES:
patent: 4268240 (1981-05-01), Rees et al.
patent: 4832593 (1989-05-01), Brown
patent: 6196826 (2001-03-01), Gellert et al.
patent: 102004022036 (2005-07-01), None
patent: 0914924 (1999-05-01), None
patent: 2837738 (2003-10-01), None
Bazzo Andrea
Pilat Loris
Rossi Massimo
Zoppas Matteo
Heitbrink Tim
Knobbe Martens Olson & Bear LLP
S.I.P.A. Societa Industrializzazione Progettazione E Automazione
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