Wear-resistant sprue bushing

Details Wear-resistant sprue bushing Wear-resistant sprue bushing

1997-06-11

1999-07-20

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

With means to heat or cool

425567, 425569, B29C 4517

Patent

active

059253860

ABSTRACT:
The invention is directed to an improved wear-resistant sprue bushing typically for use in plastic injection molding operations. The sprue bushing has a body member, a nozzle seat and a wear-resistant liner. The sprue bushing shortens cycle times by facilitating cooling and has an increased service life.

REFERENCES:
patent: 2828509 (1958-04-01), Smucker et al.
patent: 3988176 (1976-10-01), Watanabe et al.
patent: 4260348 (1981-04-01), Graham
patent: 4386262 (1983-05-01), Gellert
patent: 4403405 (1983-09-01), Gellert
patent: 4666396 (1987-05-01), Shaw
patent: 4950154 (1990-08-01), Moberg
patent: 5096410 (1992-03-01), Loulourgas
patent: 5180594 (1993-01-01), Trakas

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