Patent US4100662A successfully refreshed from Google Patents.
US4100662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled deflection roll
Assignee: Ahlstrom Corp
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Filing: 1976-12-27
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Granted: 1978-07-18
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Expires: 1996-12-27
Abstract
Abstract A controlled deflection roll comprising an inner shaft and an outer roll shell which is attached to the shaft at its middle where the deflection of the roll shell can be eliminated by supporting forces generated by hydraulic pressure applied on balls disposed in radial borings in pressure means located at the ends of the roll shell.
Inventors
- 👤 Pertti Lauri Metso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:58
CPC Classifications
F; F16; F16C; F16C13/00; F16C13/02; F16C13/022; F16C13/024; F16C13/026; D; D21; D21G; D21G1/00; D21G1/02; D21G1/0206; D21G1/0213; D21G1/022
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
199 words
In a controlled deflection roll apparatus having a stationary base means, an inner shaft supported by said base means for rotation relative thereto, an outer roll shell attached to the shaft at a central lengthwise portion thereof for support thereby and rotation therewith, and fluid pressure operated jack means operable to exert supporting forces on the roll shell at the ends thereof to control the deflection of the roll shell by load forces acting thereon, the improvement which comprises: a bearing having a stationary part and having a rotary part connected to said roll shell for rotation therewith, and said jack means having a plurality of reaction elements aligned along respective radial paths and responsive to the influence of fluid pressure to generate forces directed along said respective paths and applied to the stationary part of said bearing and transmitted through the rotary part thereof to the roll shell to control the deflection thereof by said load forces, said radial paths being generally statinary with respect to said base means, said jack means having fluid flow paths to said reaction elements accommodating the adjustment of the fluid pressure influencing respective reaction elements for corresponding adjustment of said generated forces.
Claim 2
Dependent Claim
199 words
In a controlled deflection roll apparatus having a stationary base means, an inner shaft supported by said base means for rotation relative thereto, an outer roll shell attached to the shaft at a central lengthwise portion thereof for support thereby and rotation therewith, and fluid pressure operated jack means operable to exert supporting forces on the roll shell at the ends thereof to control the deflection of the roll shell by load forces acting thereon, the improvement which comprises: a bearing having a stationary part and having a rotary part connected to said roll shell for rotation therewith, and said jack means having a plurality of reaction elements aligned along respective radial paths and responsive to the influence of fluid pressure to generate forces directed along said respective paths and applied to the stationary part of said bearing and transmitted through the rotary part thereof to the roll shell to control the deflection thereof by said load forces, said radial paths being generally statinary with respect to said base means, said jack means having fluid flow paths to said reaction elements accommodating the adjustment of the fluid pressure influencing respective reaction elements for corresponding adjustment of said generated forces.
Claim 3
Dependent Claim
36 words
The improvement according to claim 1 wherein said jack means includes a support member having a plurality of passages each extending along a corresponding one of said radial paths and each receiving a corresponding reaction element.
Claim 4
Dependent Claim
27 words
The improvement according to claim 2 wherein said support member is a ring generally concentric with the rotation axis of said inner shaft and outer roll shell.
Claim 5
Dependent Claim
27 words
The improvement according to claim 2 wherein said support member is a shaft generally coaxial with the rotation axis of said inner shaft and outer roll shell.
Claim 6
Dependent Claim
57 words
The improvement according to claim 2 wherein said jack means includes a plurality of separate fluid flow paths each communicating with a corresponding one of said passages of the support member, and fluid pressure regulator means associated with said flow paths and operable to independently adjust the fluid pressure therein and acting on a corresponding reaction element.
Claim 7
Dependent Claim
34 words
The improvement according to claim 2 wherein said jack means includes a flexible pin connecting said support member to said base means and preventing rotation of the support member relative to the base means.
Claim 8
Dependent Claim
40 words
The improvement according to claim 2 wherein at least one part of said jack means is rigidly connected to said base means to maintain said radial paths generally stationary and in a predetermined orientation with respect to the base means.
Claim 9
Dependent Claim
22 words
The improvement according to claim 2 wherein said reaction elements are disposed for direct contact with the stationary part of said bearing.
Claim 10
Dependent Claim
25 words
The improvement according to claim 2 wherein said support member is a ring disposed in circumferentially abutting relatin to the stationary part of said bearing.
Claim 11
Dependent Claim
31 words
The improvement according to claim 2 wherein said support member has at least three radially extending passages aligned along respective radial paths that are equally spaced-apart angularly relative to one another.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |