Headbox with conduits having multiply connected domains
US5019215A · kind A · utility
9Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1988 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Oct 17, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F1/026
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A headbox comprising an inlet chamber communicating with a source of fiber suspension, an outlet chamber with a discharge opening for the fiber suspension and a diffuser to establish a fluid path between the inlet and the outlet chambers. The diffuser includes a cluster of tubes, each being divided in two successive portions of larger cross-sectional area separated by a step-like transition. Each tube comprises a stem mounted in the initial portion thereof to define a ring shaped fiber suspension passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.