US5151576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll having heating means
Assignee: Schwaebische Huettenwerke Automotive GmbH
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Filing: 1991-08-08
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Granted: 1992-09-29
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Expires: 2011-08-08
Abstract
Abstract A heatable roll, in particular for processing web-like materials, for example paper, which includes a roll body having peripheral passages or bores which are preferably arranged parallel to the axis of the roll body, and at least one, and preferably two, screwed-on flange journals. Heating elements are arranged in the bores which extend in the axial direction parallel to the roll body.
Inventors
- 👤 Heinz-Michael Zaoralek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:50
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; D; D21; D21F; D21F5/00; D21F5/02; D21F5/022; F; F28; F28D; F28D15/00; F28D15/02; F28F; F28F5/00; F28F5/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
A heatable roll, in particular for processing paper and other web-like material, comprising: a) a roll body having a plurality of peripheral passages or bores which are formed substantially parallel to the axis of the roll body near the roll surface, b) at least one removably attached journal pin, and c) rod or tube-like heating elements arranged in said bores or passages and extending in the axial direction parallel to the roll body, wherein d) seals are disposed in said bores or passages at the respective ends of the heating elements to form sealed liquid cavities between the heating elements and the walls of the bores or passages, and e) said sealed cavities are filled to a greater part with a convection liquid.
Claim 2
Dependent Claim
123 words
A heatable roll, in particular for processing paper and other web-like material, comprising: a) a roll body having a plurality of peripheral passages or bores which are formed substantially parallel to the axis of the roll body near the roll surface, b) at least one removably attached journal pin, and c) rod or tube-like heating elements arranged in said bores or passages and extending in the axial direction parallel to the roll body, wherein d) seals are disposed in said bores or passages at the respective ends of the heating elements to form sealed liquid cavities between the heating elements and the walls of the bores or passages, and e) said sealed cavities are filled to a greater part with a convection liquid.
Claim 3
Dependent Claim
17 words
A heatable roll according to claim 1, wherein the heating elements are rod-like electrical resistance heating elements.
Claim 4
Dependent Claim
20 words
A heatable roll according to claim 1 wherein the heating elements are tubes which are traversed by a heat-carrier liquid.
Claim 5
Dependent Claim
13 words
A heatable roll according to claim 3, wherein said tubes are steel tubes.
Claim 6
Dependent Claim
17 words
A heatable roll according to claim 1 wherein said convection liquid boils at a predetermined heating temperature.
Claim 7
Dependent Claim
20 words
A heatable roll according to claim 5, wherein a temperature sensor is provided near the surface of the roll body.
Claim 8
Dependent Claim
13 words
A heatable roll according to claim 1, wherein said convection liquid is water.
References Cited (Backward Citations)
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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) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |