US3386849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making pre-broken-in papermakers' felt
Assignee: Appleton Mills
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Filing: 1966-11-29
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Granted: 1968-06-04
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Expires: 1986-11-29
Abstract
No abstract record available.
Inventors
- 👤 Charles G Tewksbury
- 👤 Louis R Mizell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:34
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF MAKING A PRE-BROKEN-IN PAPERMAKERS'' FELT FROM A PREDOMINATELY WOOL FABRIC WHICH COMPRISES INDURATING THE FABRIC WITH AN AQUEOUS SOLUTION OF A POLYMERIZABLE HEAT SETTABLE COMPOSITION TO PARTIALLY POLYMERIZE THE COMPOSITION WITHIN THE FIBERS OF THE FABRIC, RINSING THE INDURATED FABRIC, TO REMOVE HEAT SETTABLE COMPOSITION FROM THE SURFACE OF THE FIBERS, AND THEN HEAT CURING THE PARTIALLY POLYMERIZED COMPOSITION WITHIN THE FIBERS OF THE FABRIC AT A TEMPERATURE BETWEEN ABOUT 200 TO 375*F. WHILE MAINTAINING THE FABRIC IN A COMPRESSED CONFIGURATION BETWEEN COACTING PRESSURE MEMBERS AT A PRESSURE BETWEEN ABOUT 100 TO 300 LBS./SQUARE INCH THEREBY FIXING THE FABRIC SUBSTANTIALLY IN THE COMPRESSED CONFIGURATION.
Claim 2
Independent Claim
107 words
A METHOD OF MAKING A PRE-BROKEN-IN PAPERMAKERS'' FELT FROM A PREDOMINATELY WOOL FABRIC WHICH COMPRISES INDURATING THE FABRIC WITH AN AQUEOUS SOLUTION OF A POLYMERIZABLE HEAT SETTABLE COMPOSITION TO PARTIALLY POLYMERIZE THE COMPOSITION WITHIN THE FIBERS OF THE FABRIC, RINSING THE INDURATED FABRIC, TO REMOVE HEAT SETTABLE COMPOSITION FROM THE SURFACE OF THE FIBERS, AND THEN HEAT CURING THE PARTIALLY POLYMERIZED COMPOSITION WITHIN THE FIBERS OF THE FABRIC AT A TEMPERATURE BETWEEN ABOUT 200 TO 375*F. WHILE MAINTAINING THE FABRIC IN A COMPRESSED CONFIGURATION BETWEEN COACTING PRESSURE MEMBERS AT A PRESSURE BETWEEN ABOUT 100 TO 300 LBS./SQUARE INCH THEREBY FIXING THE FABRIC SUBSTANTIALLY IN THE COMPRESSED CONFIGURATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |