Pipe-locking formation method and apparatus
US4470291A · kind A · utility
7Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1982 |
| Grant date | Sep 11, 1984 |
| Priority date | — |
| Expiry date | Apr 13, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S269/902
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and an apparatus for forming arcuate radially-extending locking projections on the ends of pipes is disclosed, in which the pipe end is marked about its external circumference into spaced forming zones, and the projections are then formed employing one of the zone markings as an index of the location of a second zone marking spaced therefrom, the apparatus including an elevatable pipe support and a forming head provided with a male punch assembly and a female die member, the male punch assembly being operable by a power source and being located within the bore of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.