Porous core rod
US4304542A · kind A · utility
18Cited by
13References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1979 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | Jul 19, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0069
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A blow slot equipped core rod assembly which incorporates a porous metal wall portion. Internal conduit means in the assembly permit a fluid (such as air, or the like) to be supplied to said blow slot (when open) and to such porous metal wall portion under superatmospheric or under subatmospheric pressure. The core rod is particularly useful in the manufacture of multilayered thermoplastic containers by injection blow molding procedures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.