Patent US4644860A successfully refreshed from Google Patents.
US4644860A
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Method of controlling the line pressure distribution in a roll arrangement
Assignee: EDUARD KUSTERS MASCHINENFABRIK & Co KG GmbH
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Filing: 1985-03-18
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Granted: 1987-02-24
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Expires: 2005-03-18
Abstract
Abstract In a roll arrangement a control device is applied with information concerning the width of the web, and the pressure profile to be applied to the web, and the average pressure to be applied to the web. Control signals are generated provided to support elements which support a rotatable shell of a roll on a fixed beam to create an appropriate nip pressure.
Inventors
- 👤 Bernhard Brendel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:20
CPC Classifications
F; F16; F16C; F16C13/00; F16C13/02; F16C13/022; F16C13/024; F16C13/026; F16C13/028; D; D21; D21G; D21G1/00; D21G1/002; D21G1/02; D21G1/0206; D21G1/0213; D21G1/022
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
170 words
A method of controlling the linear or nip pressure distribution in a roll arrangement adapted for the pressure treatment of a web of material, said roll arrangement comprising at least one roll comprising a stationary beam extending axially of the roll and having a shell rotatable therearound, the shell being mounted relatively to the beam by means of a plurality of supporting elements spaced consecutively along the beam and adapted to apply pressure to the shell to control the line or nip pressure of the roll arrangement, said method including the step of determining a pressure profile to be applied to the web, and providing signals representative of the profile to control signal generating means, to generate signals to control the pressure applied to the web by the supporting elements, and including the step of indicating the width of the web to the means which produce the control signals so that the control signal producing means will automatically create appropriate control signals having regard to the width of the web.
Claim 2
Independent Claim
170 words
A method of controlling the linear or nip pressure distribution in a roll arrangement adapted for the pressure treatment of a web of material, said roll arrangement comprising at least one roll comprising a stationary beam extending axially of the roll and having a shell rotatable therearound, the shell being mounted relatively to the beam by means of a plurality of supporting elements spaced consecutively along the beam and adapted to apply pressure to the shell to control the line or nip pressure of the roll arrangement, said method including the step of determining a pressure profile to be applied to the web, and providing signals representative of the profile to control signal generating means, to generate signals to control the pressure applied to the web by the supporting elements, and including the step of indicating the width of the web to the means which produce the control signals so that the control signal producing means will automatically create appropriate control signals having regard to the width of the web.
Claim 3
Dependent Claim
24 words
A method according to claim 1 wherein the pressure profile to be applied to the web is programmed into the control signal generating means.
Claim 4
Dependent Claim
34 words
A method according to claim 2, wherein the programming is achieved by operating a plurality of hand-actuated control elements to select the pressure to be applied at predetermined positions spaced transversely across the web.
Claim 5
Dependent Claim
54 words
A method according to claim 1 comprising the step of measuring the property of the web at predetermined positions spaced transversely across the web after it has passed through the nip of the roll arrangement to establish a measured property profile, and automatically calculating therefrom the pressure profile to be applied to the web.
Claim 6
Independent Claim
31 words
A method according to any one of claims 1 to 4, wherein the width of the web is indicated to the control signal producing means by actuating a hand-operated control element.
Claim 7
Independent Claim
44 words
A method according to any one of claims 1 to 4, wherein the width of the web is automatically measured by sensor means which produce a signal representative of the width of the web, said signal being passed to the control signal producing means.
Claim 8
Dependent Claim
164 words
Apparatus for controlling the linear nip or pressure distribution in a roll arrangement for the pressure treatment of webs of material, said arrangement comprising at least one roll having a stationary beam extending axially of the roll and a shell rotatable therearound, the shell being mounted relatively to the beam by means of a plurality of supporting elements spaced consecutively along the beam and adapted to apply pressure to the shell to control the line or nip pressure of the roll arrangement, the apparatus further comprising means for determining a pressure profile to be applied to the web, means for providing signals representative of the profile to a control signal generating means, adapted to generate signals to control the pressure applied to the web by the supporting elements, and means for indicating the width of the web to the control signal producing means, the control signal producing means being adapted to create appropriate control signals automatically having regard to the width of the web.
Claim 9
Dependent Claim
164 words
Apparatus for controlling the linear nip or pressure distribution in a roll arrangement for the pressure treatment of webs of material, said arrangement comprising at least one roll having a stationary beam extending axially of the roll and a shell rotatable therearound, the shell being mounted relatively to the beam by means of a plurality of supporting elements spaced consecutively along the beam and adapted to apply pressure to the shell to control the line or nip pressure of the roll arrangement, the apparatus further comprising means for determining a pressure profile to be applied to the web, means for providing signals representative of the profile to a control signal generating means, adapted to generate signals to control the pressure applied to the web by the supporting elements, and means for indicating the width of the web to the control signal producing means, the control signal producing means being adapted to create appropriate control signals automatically having regard to the width of the web.
Claim 10
Dependent Claim
21 words
An apparatus according to claim 7 wherein means are provided for pre-programming of the profile to be applied to the web.
Claim 11
Dependent Claim
32 words
An apparatus according to claim 7, wherein said pre-programming means comprise a plurality of elements which may be positioned to indicate the pressure to be applied to respective regions of the web.
Claim 12
Dependent Claim
49 words
An apparatus according to claim 9, wherein said elements comprise slidable elements which are disposed one beside the other to move in parallel directions so that the slidable elements provide a visual representation of the pressure to be applied to the web when the slidable elements are in position.
Claim 13
Dependent Claim
48 words
An apparatus according to claim 7, wherein means are provided for measuring a property of the web at predetermined positions spaced transversely across the web to establish a measured property profile, and means are provided for automatically calculating therefrom the pressure profile to be applied to the web.
Claim 14
Independent Claim
32 words
An apparatus according to any one of claims 7 to 11, wherein the means for indicating the width of the web to the control signal producing means comprise a hand-operated control element.
Claim 15
Independent Claim
52 words
An apparatus according to any one of claims 7 to 11, wherein the means for indicating the width of the web to the control signal producing means comprise sensor means which automatically measure and produce representative of the width of the web, said signals being passed to the control signal producing means.
Claim 16
Independent Claim
38 words
An apparatus according to any one of claims 7-11, wherein means are provided for adjusting the basic linear pressure to be applied, said control signal generating means generating signals which effect local variations of the applied linear pressure.
Claim 17
Independent Claim
29 words
An apparatus according to any one of claims 7-11, wherein display means are provided on which the pressures applied at predetermined regions of the web may be visually represented.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |