Shear assembly for a roll forming machine
US7204179B1 · kind B1 · utility
6Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2005 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Oct 18, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9447
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A shear assembly for a roll forming machine which forms a rain gutter. A pair of coplanar blade members separated along a vertical line are caused to first move vertically downwardly, then have their lower ends pivot outwardly and, finally, have their upper ends pivot outwardly. The last motion is accomplished with enhanced mechanical advantage to cut through multiple layers of metal at the upper end of the gutter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.