Patent US3028933A successfully refreshed from Google Patents.
Patent US4280262A successfully refreshed from Google Patents.
US4280262A
Expired / Lapsed
US
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Hydraulically controlled variable deflection roll
Assignee: Individual
•
Filing: 1979-10-03
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Granted: 1981-07-28
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Expires: 1999-10-03
Abstract
Abstract An hydraulically controlled variable deflection roll of the type applying the deflection force between the fixed shaft and the rotative shell via piston and cylinder arrangements, as to each of the arrangements uses a large number of pistons of smaller diameter.
Inventors
- 👤 Karl-Heinz Ahrweiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:27
CPC Classifications
F; F16; F16C; F16C13/00; F16C13/02; F16C13/022; F16C13/024; F16C13/026; F16C13/028
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A hydraulically controlled variable deflection roll comprising a rotative shell having an external work-rolling surface and a cylindrical inside, a fixed shaft extending through said inside with radial clearance permitting independent transverse bending of the shell and shaft, said shaft having at least one radial recess facing said inside, a plate spaced radially from the inside end of said recess and forming therewith a manifold space between the plate and said end, means for introducing hydraulic pressure to said space, said plate having extending therethrough a multiplicity of cylindrical holes each having a piston extending therethrough with an inner end in said space and an outer end projecting towards the shell's said inside, and a bearing shoe having an outer surface bearing on the shell's said inside and an inner surface to which all of the pistons' said outer ends collectively apply force when hydraulic pressure is introduced to said space by said means.
Claim 2
Dependent Claim
154 words
A hydraulically controlled variable deflection roll comprising a rotative shell having an external work-rolling surface and a cylindrical inside, a fixed shaft extending through said inside with radial clearance permitting independent transverse bending of the shell and shaft, said shaft having at least one radial recess facing said inside, a plate spaced radially from the inside end of said recess and forming therewith a manifold space between the plate and said end, means for introducing hydraulic pressure to said space, said plate having extending therethrough a multiplicity of cylindrical holes each having a piston extending therethrough with an inner end in said space and an outer end projecting towards the shell's said inside, and a bearing shoe having an outer surface bearing on the shell's said inside and an inner surface to which all of the pistons' said outer ends collectively apply force when hydraulic pressure is introduced to said space by said means.
Claim 3
Dependent Claim
39 words
The roll of claim 1 in which a housing forms said recess and said plate is fixed to said housing and therewith forms a closed unit, said shaft integrally forming a radial recess in which said unit is fixed.
Claim 4
Dependent Claim
25 words
The roll of claim 3 in which there is space between the side of said housing and the side of the shaft's said radial recess.
Claim 5
Dependent Claim
33 words
The roll of claim 3 in which guide means extend from said shoe into said space between the housing's said side and said side of the shaft's said recess and with clearance therebetween.
Claim 6
Dependent Claim
22 words
The roll of any one of claims 1-4 in which said holes each have a length at least 1.5 times their diameter.
References Cited (Backward Citations)
US3131625A
Cited
US3638292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |