Deflection-controlled roll for the pressure treatment of materials in web form
US4058877A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1976 |
| Grant date | Nov 22, 1977 |
| Priority date | — |
| Expiry date | Apr 6, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C13/028
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The deflection-controlled roll has a roll shell rotatable about a fixed beam with a plurality of hydraulic piston support devices along the roll for exerting support forces between the beam and the roll shell. The roll shell has weakened zones along its length for reducing the stiffness of the shell. The weakened zones may comprise grooves, circumferential rows of bores or tangential slots, corrugated annular inserts, etc. The weakened zones may be formed between annular portions of the roll shell aligned with the operating surfaces of the support devices. Preferably the support devices form hydrostatic support fluid layers between the operating surfaces and the roll shell. Lift-off support devices may be employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.