Valve pin bushing assembly for an injection molding apparatus
US8113812B2 · kind B2 · utility
1Cited by
3References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Aug 12, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/2889
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A valve pin bushing assembly for an injection molding apparatus. The assembly includes a bushing body for connection to a manifold, a flexible barrier having a first end that is continuously connected to the bushing body, and a valve pin continuously connected to a second end of the flexible barrier. The valve pin extends through a nozzle in a downstream direction towards a mold gate, wherein the valve pin is movable in an upstream direction and in the downstream direction for opening and closing the mold gate. The flexible barrier seals a channel of molding material from an outside space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.