Method and apparatus for squaring and flattening sheets
US7303386B1 · kind B1 · utility
6Cited by
5References
5Claims
0Family size
Inventors
Key dates
| Filing date | Sep 2, 2003 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Sep 23, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/048
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Preheated plastic sheets are squared and flattened to be engageable by clamping fingers of clamps on a clamping frame by an array of paddles having vertical and horizontal portions moved to engage any upturned or skewed sheet edges to flatten and square the same as said paddles are simultaneously moved longitudinally and vertically by respective actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.