Injection nozzle for a metallic material injection-molding...

Details Injection nozzle for a metallic material injection-molding... Injection nozzle for a metallic material injection-molding...

2006-09-19

2006-09-19

Kerns, Kevin P. (Department: 1725)

Metal founding

Means to shape metallic material

Pressure shaping means

C164S113000, C164S284000

Reissue Patent

active

RE039291

ABSTRACT:
In metallic material injection molding machines, the connection between the injection nozzle and the sprue bushing has tended to leak metallic material. To overcome this problem, the nozzle has been modified to have a projecting portion or spigot that extends into a mating portion of the sprue bushing to form a seal between the respective portion walls. The nozzle and sprue bushing can move axially with respect to one another without loss of sealing whereas with the prior designs any separation between confronting annular surfaces on the sprue bushing and the nozzle would result in a loss of sealing and leakage.

REFERENCES:
patent: 4609032 (1986-09-01), Perrella
patent: 4623015 (1986-11-01), Zecman
patent: 5858420 (1999-01-01), Szajak et al.
patent: 6106275 (2000-08-01), Huff et al.
patent: 6533021 (2003-03-01), Shibata et al.

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