US3242583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of drying a running web of sheet material
Assignee: Johnson Corp
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Filing: 1963-11-06
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Granted: 1966-03-29
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Expires: 1983-11-06
Abstract
No abstract record available.
Inventors
- 👤 Donald L Calkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:15
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/02; D21F5/10; F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/18; F26B13/183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A METHOD OF DRYING A RUNNING WEB OF SHEET MATERIAL BY SURFACE CONTACT WITH A STEAM HEATED, HORIZONTALLY DISPOSED, ROTATED CYLINDER, COMPRISING THE STEPS OF: (A) HEATING THE CYLINDER BY THE INTERIOR ADMISSION OF STEAM DISTRIBUTED RELATIVELY UNIFORMLY THROUGHOUT THE LENGTH OF THE CYLINDER TO PROVIDE A RELATIVELY UNIFORM SUPPLY OF UNCONDENSED STEAM IN INTIMATE RELATION TO SUBSTANTIALLY THE ENTIRE INTERIOR SURFACE OF THE CYLINDER, (B) WITHDRAWING THE CONDENSATE FROM THE CYLINDER AT A PLURALITY OF DISCRETE POINTS SEPARATED FROM EACH OTHER BY A SUBSTANTIAL DISTANCE AND SPACED LENGTHWISE OF THE CYLINDER AND LOCATED DIRECTLY ADJACENT THE INTERIOR SURFACE OF THE CYLINDER, (C) ROTATING THE CYLINDER AT A SPEED WHICH WILL PROVIDE RELATIVELY UNIFORM DISTRIBUTION OF THE CONDENSATE LENGTHWISE OF THE CYLINDER, AND (D) WITHDRAWING THE CONDENSATE AT SAID POINTS BY DIFFERENTIAL PRESSURE AT A RATE WHICH WILL SUBSTANTIALLY MAINTAIN A FILM OF CONDENSATE OF UNIFORM DEPTH LENGTHWISE OF THE CYLINDER WHEREBY THE RATE OF CONDENSATION OF STEAM MAY VARY THROUGHOUT THE LENGTH OF THE CYLINDER DEPENDING UPON THE WIDTHWISE VARIATION IN THE MOISTURE CONTENT OF THE SHEET MATERIAL CONTACTING THE EXTERIOR SURFACE OF THE CYLINDER.
Claim 2
Independent Claim
186 words
A METHOD OF DRYING A RUNNING WEB OF SHEET MATERIAL BY SURFACE CONTACT WITH A STEAM HEATED, HORIZONTALLY DISPOSED, ROTATED CYLINDER, COMPRISING THE STEPS OF: (A) HEATING THE CYLINDER BY THE INTERIOR ADMISSION OF STEAM DISTRIBUTED RELATIVELY UNIFORMLY THROUGHOUT THE LENGTH OF THE CYLINDER TO PROVIDE A RELATIVELY UNIFORM SUPPLY OF UNCONDENSED STEAM IN INTIMATE RELATION TO SUBSTANTIALLY THE ENTIRE INTERIOR SURFACE OF THE CYLINDER, (B) WITHDRAWING THE CONDENSATE FROM THE CYLINDER AT A PLURALITY OF DISCRETE POINTS SEPARATED FROM EACH OTHER BY A SUBSTANTIAL DISTANCE AND SPACED LENGTHWISE OF THE CYLINDER AND LOCATED DIRECTLY ADJACENT THE INTERIOR SURFACE OF THE CYLINDER, (C) ROTATING THE CYLINDER AT A SPEED WHICH WILL PROVIDE RELATIVELY UNIFORM DISTRIBUTION OF THE CONDENSATE LENGTHWISE OF THE CYLINDER, AND (D) WITHDRAWING THE CONDENSATE AT SAID POINTS BY DIFFERENTIAL PRESSURE AT A RATE WHICH WILL SUBSTANTIALLY MAINTAIN A FILM OF CONDENSATE OF UNIFORM DEPTH LENGTHWISE OF THE CYLINDER WHEREBY THE RATE OF CONDENSATION OF STEAM MAY VARY THROUGHOUT THE LENGTH OF THE CYLINDER DEPENDING UPON THE WIDTHWISE VARIATION IN THE MOISTURE CONTENT OF THE SHEET MATERIAL CONTACTING THE EXTERIOR SURFACE OF THE CYLINDER.
References Cited (Backward Citations)
US3034225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |