Method of forming grooves on metal pipe and groove-forming apparatus
US5727411A · kind A · utility
14Cited by
0References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Dec 20, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D17/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Each of specific rollers which corresponds to one of the grooves is disposed in a circumference of the metal pipe at equal intervals and is pressed against the periphery of the metal pipe 10, thereby forming a plurality of the grooves at the same time. Because each of the grooves is formed by a specific forming roller, a plurality of the grooves can be formed separately, and the material of the wall between the grooves is prevented from being drawn. Thus, the grooves can be formed into a desired shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.