Title: Deflection-controlled roll for the pressure treatment of materials in web form

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.

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Inventors: Lehmann, Rolf (Mutschellen AG, CH)

Application Number: 674236
Filing Date: 1976-04-06
Publication_date: 1977-11-22
Assignee: Escher Wyss Limited (Zurich, CH)
Primary Class(es): 492/7
Other Classes:
US Patent Ref:

3119324	Jan, 1964	Justus	29/116.
3336648	Aug, 1967	Alexeff	29/113.
3389450	Jun, 1968	Robertson	29/116.
3587152	Jun, 1971	Hold	29/116.
3665572	May, 1972	Robertson	29/116.
3676908	Jul, 1972	Wittler et al.	29/116.
3802044	Apr, 1974	Spillmann et al.	29/113.

Other Refs:
Primary Examiner: Guest, Alfred R.
Assistant Examiner:
Attorney: Pennie & Edmonds