Roll-type machine for forming cylindrical sheet metal bodies
US4133197A · kind A · utility
4Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1977 |
| Grant date | Jan 9, 1979 |
| Priority date | — |
| Expiry date | Aug 29, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D5/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A roll-type machine for forming a cylindrical metal body from an initially flat sheet of metal; such cylindrical body being for use in the manufacture of tanks for air, gas, or water. The machine includes a forming roll which is mounted and controlled in a manner to automatically retract from its normal, fixed working position immediately prior to completion of formation of the cylindrical metal body whereby to prevent otherwise attendant out-of-round deformation of said body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.