Loaded clamped foil blade for use in a web-forming section of a papermaking machine
US6039843A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | May 19, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F1/483
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A foil blade for use in dewatering devices found in a web forming section of a papermaking machine is described. The improved foil blade according to the present invention is easily installed into and removed from such dewatering devices. The improved foil blade of the present invention is rigidly mounted within the same dewatering devices such that the foil blade does not rotate or change geometry during a papermaking process as a wire or fabric having a stock mixture thereon travels over the foil blade. The improvement resides in providing a loaded clamping assembly for the foil blade. In one embodiment, according to the present invention, the loaded clamping assembly comprises a pneumatic load air tube to rigidly secure the foil blade to a dewatering device in a web-forming section of a papermaking machine. The foil blade being firmly clamped in position by way of the loaded air tube, cannot rotate or change geometry during operation. The loaded clamping assembly further includes a pneumatic unload air tube to unclamp the foil blade from the dewatering device allowing the foil blade to be easily slipped in and out in the cross-machine direction of the papermaking machine. In ano…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.