Method and apparatus for the production of pipe
US4952362A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1989 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Jul 6, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for producing a pipe transports first and second sets of chill moulds respectively along first and second endless paths, the chill moulds of each set being so transported one after another, and the endless paths being positioned such that junction faces of the respective chill moulds of the respective sets are positioned against each other in a pipe moulding zone of the endless paths. So positioning the respective chill moulds of the respective sets also defines outer surfaces thereof that are opposite the junction faces and outer surfaces that extend along edges of the junction faces at least generally in the direction of the transporting of the chill moulds. The chill moulds are locked together in the pipe moulding zone with locking surfaces respectively on the outer surfaces of the chill moulds that extend along edges of the junction faces, locking pieces having substantially the same lengths as the chill moulds and U-shaped cross sections, and locking piece transporting means for transporting first and second sets of the locking pieces one after another respectively along two locking-pipe endless paths at the same rate as the chill moulds are transported.…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.