US3686725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming glass fabric suitable for casts, bandages, and the like
Assignee: Carolina Narrow Fabric Co
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Filing: 1969-12-29
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Granted: 1972-08-29
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Expires: 1989-12-29
Abstract
Abstract A relatively open air permeable glass fiber fabric for use in orthopedic casts, bandages and the like and comprising interlaced chemically desized glass yarns consisting essentially of filaments having an average diameter not greater than about 0.00021 inch. A method of forming such a fabric wherein glass yarns are formed which consist essentially of filaments of the above diameter, the glass yarns are formed into a relatively open air, permeable, flexible fabric, and the glass yarns are chemically desized either before or after formation into the fabric. A coupling agent may also be applied to the glass yarns or fabric.
Inventors
- 👤 John L Nisbet
- 👤 Hubert C Woodall Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:56
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/04; D; D04; D04B; D04B21/00; D04B21/14; D10; D10B; D10B2509/00; D10B2509/02; D10B2509/024
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
37 words
The method as defined in claim 1 wherein the step of coating the glass yarns of the fabric includes forcing a solution containing a coupling agent through the fabric while maintaining the same in wound package form.
Claim 2
Dependent Claim
32 words
The method as defined in claim 1 wherein said glass yarns are interlaced by being knitted together and said filaments have an average diameter between about 0.00015 inch and about 0.00018 inch.
Claim 3
Dependent Claim
16 words
The method as defined in claim 3 wherein the solubilizing chemical comprises a size converting enzyme.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |