Heated and cooled valve stem for an injection molding apparatus
US5162125A · kind A · utility
11Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1991 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | May 30, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/306
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mold cavity, a molten plastic inlet conduit for communication therewith and a channel in the inlet conduit for conveying molten plastic to the mold cavity. Separate heating and cooling are provided in the inlet conduit adjacent the mold cavity to closely control the temperature of the molten plastic in the channel adjacent the mold cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.