Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate
2005-02-01
2005-02-01
Heitbrink, Jill L. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
C264S328700, C264S328800, C264S328110, C425S127000, C425S572000, C425S576000
Reexamination Certificate
active
06849219
ABSTRACT:
An injection moulding apparatus for hollow parts comprises first and second co-operating dies, each die including a first male die core and a female die recess. One of the dies is rotatable about an axis. In a first angular position of the rotatable die, the male die core of the first die co-operates with the female die recess of the second die and the male die core of the second die co-operates with the female die recess of the first die, to define first and second moulds in which half-components may be formed. In a second angular position of the rotatable die, the respective female dies recesses of the first and second dies co-operate to form a third mould in which the half-components may be joined. The apparatus makes use of a single injector differentially controlled for each stage.
REFERENCES:
patent: 3807920 (1974-04-01), Aoki
patent: 5221538 (1993-06-01), Gasami et al.
patent: 6299816 (2001-10-01), Takemoto et al.
patent: 19852553 (1999-02-01), None
patent: 1299327 (1962-12-01), None
International Search Report for PCT/GB01/00382.
Bromberg & Sunstein LLP
Heitbrink Jill L.
Swan Valley Designs Limited
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