US2997406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cast-coating paper
Assignee: Warren SD Co
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Filing: 1957-06-03
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Granted: 1961-08-22
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Expires: 1977-06-03
Abstract
No abstract record available.
Inventors
- 👤 Eben W Freeman
- 👤 Lindsay O Goff
- 👤 Robert C Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:53
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/08; D21H25/12; D21H25/14; D06; D06C; D06C15/00; D06C15/02; D21G; D21G9/00; D21G9/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
APPARATUS FOR SIMULTANEOUSLY DRYING AND DRUM FINISHING COATED PAPER COMPRISING: MEANS FOR COATING PAPER WITH AN AQUEOUS COATING WHICH IS RELATIVELY PLASTIC WHEN A PREDETERMINED QUANTITY OF MOISTURE IS PRESENT IN SAID COATING, A FINISHING DRUM, MEANS FOR HEATING SAID DRUM, MEANS FOR APPLYING SAID PAPER TO SAID DRUM WITH SAID COATED SIDE IN CONTACT WITH THE SURFACE OF SAID DRUM AND WHILE SAID PREDETERMINED QUANTITY OF MOISTURE IS PRESENT IN SAID COATING, AND MEANS FOR PRESSING SAID PAPER AGAINST SAID DRUM AND AT LEAST IN PART DRYING THE SAME IN CONTACT THEREWITH BY HOLDING THE SAME AGAINST SAID DRUM FOR A SUBSTANTIAL INTERVAL OF TIME WITHOUT SIMULTANEOUSLY STRETCHING THE SAME SUBSTANTIALLY COMPRISING A BACKING ROLL MOUNTED FOR ROTATION IN UNISON WITH AND IN PRESSURE CONTACT AGAINST SAID DRUM, AN ELASTIC RESILIENT LAYER ON SAID BACKING ROLL, AND THE SURFACE OF SAID RESILIENT LAYER BEING SUBSTANTIALLY NON-STRETCHABLE WHILE PERMITTING SAID LAYER TO YIELD UNDER SAID PRESSURE.
Claim 2
Dependent Claim
156 words
APPARATUS FOR SIMULTANEOUSLY DRYING AND DRUM FINISHING COATED PAPER COMPRISING: MEANS FOR COATING PAPER WITH AN AQUEOUS COATING WHICH IS RELATIVELY PLASTIC WHEN A PREDETERMINED QUANTITY OF MOISTURE IS PRESENT IN SAID COATING, A FINISHING DRUM, MEANS FOR HEATING SAID DRUM, MEANS FOR APPLYING SAID PAPER TO SAID DRUM WITH SAID COATED SIDE IN CONTACT WITH THE SURFACE OF SAID DRUM AND WHILE SAID PREDETERMINED QUANTITY OF MOISTURE IS PRESENT IN SAID COATING, AND MEANS FOR PRESSING SAID PAPER AGAINST SAID DRUM AND AT LEAST IN PART DRYING THE SAME IN CONTACT THEREWITH BY HOLDING THE SAME AGAINST SAID DRUM FOR A SUBSTANTIAL INTERVAL OF TIME WITHOUT SIMULTANEOUSLY STRETCHING THE SAME SUBSTANTIALLY COMPRISING A BACKING ROLL MOUNTED FOR ROTATION IN UNISON WITH AND IN PRESSURE CONTACT AGAINST SAID DRUM, AN ELASTIC RESILIENT LAYER ON SAID BACKING ROLL, AND THE SURFACE OF SAID RESILIENT LAYER BEING SUBSTANTIALLY NON-STRETCHABLE WHILE PERMITTING SAID LAYER TO YIELD UNDER SAID PRESSURE.
References Cited (Backward Citations)
CA527207A
Cited
US2312853A
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US2316202A
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US2324631A
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US2442443A
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US2597858A
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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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |