Extruder for corrugated tube
US3999925A · kind A · utility
1Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1974 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | Sep 10, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/003
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device for manufacturing profiled hollow tubing comprising an extruder and two endless rows of die halves guided over guiding wheels provided with first recesses having one depth and second recesses which are shallower, such that subsequent moulds halves contact each other before coming into contact with the plastics tube as extruded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.