Hot sprue bushing with interchangeable tip having multiple edge

Details Hot sprue bushing with interchangeable tip having multiple edge Hot sprue bushing with interchangeable tip having multiple edge

1992-12-21

1994-08-02

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

26432815, 425549, 425567, 425572, B29C 4520

Patent

active

053340060

ABSTRACT:
A highly reliable hot sprue bushing with an interchangeable tip having multiple edge gates for use in controlling the temperature of plasticized material while it flows from the injection nozzle to the gates of a multiple cavity mold. Advantageously, the hot sprue bushing is adjustable in length so that it can be used with a full range of standard or custom mold plate thicknesses or other required lengths and the interchangeable tip does not require separate heating and temperature control.

REFERENCES:
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patent: 4273525 (1981-06-01), Reitan
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patent: 4563149 (1986-01-01), Landis
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patent: 5028227 (1991-07-01), Gellert et al.
patent: 5123834 (1992-06-01), Joyner
patent: 5127814 (1992-07-01), Johnson et al.

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