Drying cylinder for a paper making machine
US4100683A · kind A · utility
5Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1976 |
| Grant date | Jul 18, 1978 |
| Priority date | — |
| Expiry date | May 5, 1996 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F5/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The internal ribs of the drying cylinders are formed with cross-sections which are of parabolic shape or substantially parabolic shape in order to obviate any additional thermal stressing of the cylinder. The rib cross-sections are each situated in a zone bounded outwardly by a hexagon which consists of a rectangle of full rib width and a height equal to 0.75 times the rib height and an adjoining trapezium having a width 0.65 times the maximum rib width at the top of the rib and inwardly by a pentagon of a width of 0.7 times the full width at mid-height of the rib and an apex at the maximum height of the rib.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.