Extruder head for making elastomer-fiber composite hose
US4240782A · kind A · utility
14Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1979 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Oct 17, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2709/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extruder head that includes a doubled taper conical pin with a divergent conical surface interconnected at a common base to a convergent conical surface; and a coaxial die with an interior cavity spaced from and having substantially the same contour as the pin, the die and pin together forming an annular gap with an annular inlet area, the gap conically divergent to a second annular area juxtaposed the common conical base of the pin to form a second annular area of at least twice the size of the inlet area, the gap conically convergent from the second annular area to an annular exit area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.