US3676295A
Expired / Lapsed
US
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Noninteracting control of moisture and fiber content of fibrous sheet during manufacture
Assignee: Industrial Nucleonics Corp
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Filing: 1969-09-12
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Granted: 1972-07-11
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Expires: 1989-09-12
Abstract
Abstract MOISTURE AND FIBER CONTENT OF A FIBROUS SHEET ARE CONTROLLED DURING MANUFACTURE BY MEASURING THE SHEET MOISTURE DIWNSTREAM OF A DRYER IN THE MANFUACTURING MACHINE, AS WELL AS THE SHEET FIBER CONTENT. THE FIBER CONTENT AND MOISTURE MEASUREMENTS ARE COMBINED TO CONTROL THE DRYER DRYING RATE IN SUCH A MANNER THAT CHANGES IN THE RATE AT WHICH FIBER IS FED TO THE MACHINE ARE COMPENSATED FOR BY CHANGES IN THE DRYER DRYING RATE SO THAT CHANGES IN THE MOISTURE CONTENT OF THE SHEET ARE GREATLY MINIMIZED. THE RATE OF FIBER FLOW IS CONTROLLED IN RESPONSE TO AN ERROR SIGNAL FOR THE SHEET FIBER CONTENT AND THE RATE AT WHICH FIBER IS FED INTO MACHINE.
Inventors
- 👤 James S Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:42
CPC Classifications
D; D21; D21G; D21G9/00; D21G9/0009; D21G9/0027; D21F; D21F1/00; D21F1/06; D21G9/0036; Y; Y10; Y10S; Y10S162/00; Y10S162/06; Y10S162/09; Y10S162/10; Y10S162/11
Claims Analysis
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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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |