Injection nozzle
US5304058A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1991 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Jun 12, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/224
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for gas assisted injection molding is shown including a source of injection gas and a source of molten plastic or synthetic resin material. The apparatus includes an injection nozzle with a minimum of moving parts. The injection nozzle includes a nozzle body portion having an axially extending bore therethrough for establishing a flow path. A valve chamber is provided in the axially extending bore, and a spherical valve is mounted in the valve chamber for rotation between a first position in which a first flow path is established, and a second position in which a second flow path is established. A sealing member sealingly mounts the spherical valve in the valve chamber, and means to activate the spherical valve are included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.