Injection nozzle for a metallic material injection-molding machine
USRE39291E1 · kind E1 · reissue
4Cited by
5References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2003 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Nov 13, 2023 |
Classification
- Technology area (CPC —)General
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.