Filter element with anti-tracking ribs

Details Filter element with anti-tracking ribs Filter element with anti-tracking ribs

2006-06-27

2006-06-27

Cecil, Terry K. (Department: 1723)

Liquid purification or separation

Filter

Receptacle and modified spacing surface or support for...

C210S348000, C220S672000

Reexamination Certificate

active

07066338

ABSTRACT:
An injection moulding assembly (10) comprising a male moulding member (11) surrounded by a female moulding member (12) forming a void (13) between them that upon injection of molten plastics into the mould a container can be formed. The moulding assembly includes a guide rod (14) and ejection flange (16) and a pair of ejection flange guide rods (17and18), an air vent valve (15) and an injection passage (19). The male member (11) includes in this embodiment eight grooves (20) unevenly spaced so that the partially hardened container formed in the injection mould can be pushed from the mould using the ejection flange (16) while the container is sufficiently green to enable the ribs formed in the grooves (20) to move over the surface of the male mould (11) during the ejection process.

REFERENCES:
patent: 2759610 (1956-08-01), James
patent: 3333703 (1967-08-01), Scavuzzo et al.
patent: 4109676 (1978-08-01), Price
patent: 4454036 (1984-06-01), Suzuki
patent: 4540489 (1985-09-01), Barnard
patent: 5080244 (1992-01-01), Yoshino
patent: 5171430 (1992-12-01), Beach et al.
patent: 5593063 (1997-01-01), Claydon et al.
patent: WO 97/19737 (1997-06-01), None
patent: 2260713 (1993-04-01), None

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