Hydrostatic shoe for controlled crown rolls
US5797826A · kind A · utility
1Cited by
12References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Oct 2, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21G1/022
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A controlled crown roll utilizes a crown support piston with a glide shoe with a cavity in the face of the glide shoe centered under the nip loading line. The cavity is surrounded by a land area, the majority of which is located away from the nip load. Use of a low viscosity hydraulic fluid, for example, 15.6 cP, with a hydraulic film thickness of 0.002 inches, results in significantly lower friction between the glide shoe and the interior surface of the rotating mantle. Recesses in the piston sides form hydrostatic thrust bearings which perform the centering function for the piston and the glide shoe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.