Patent US1519553A successfully refreshed from Google Patents.
US5353486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Narrow fiberglass knit tape
Assignee: 3M Co
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Filing: 1992-11-13
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Granted: 1994-10-11
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Expires: 2012-11-13
Abstract
Abstract The present invention provides a narrow orthopedic casting tape which can be handled in longer lengths suitable for economical production of coated fabric products. The narrow casting tape of the present invention is knitted as a wide fiberglass fabric with at least one removable connecting yarn in the length (i.e., warp) direction of the fabric which acts to connect two narrower strips of fiberglass fabric. The removable connecting yarn is subsequently removed from the fabric by a heat treatment process which separates the wider fabric into two narrower fabrics and also heat sets the fabric. Alternatively, the removable connecting yarn may be removed from the fabric by a dissolution process. Narrow fabrics of the present invention can also be constructed of organic yarns. The present invention also provides a tearable orthopedic casting tape which has a high degree of extensibility. The tearable casting tape of the present invention is knitted as a wide fabric, preferably fiberglass, with at least one tearable connecting yarn in the length direction of the fabric which acts to weakly connect two or more narrower fabrics. The tearable connecting yarn is capable of being easily torn or slit causing the fabric to separate into narrower webs.
Inventors
- 👤 Jacquelyn A. Schmidt
- 👤 John M. Kokorudz
- 👤 Matthew T. Scholz
- 👤 Miroslav M. Tochacek
- 👤 F. Andrew Ubel, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:47
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/14; D04B21/16; A; A61; A61F; A61F13/00; A61F13/04; D04B21/20; D10; D10B; D10B2101/00; D10B2101/02; D10B2101/06; D10B2509/00; D10B2509/02; D10B2509/024; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
100 words
A method of making narrow fiberglass fabrics, comprising the steps of: knitting a fiberglass fabric comprising: at least one removable connecting yarn in the warp direction of the fabric, said removable connecting yarn being dissoluble or combustible; and a plurality of fiberglass fabric yarns; winding said connected knit fabric into a wide roll; and then removing said removable connecting yarn from said wide roll to thereby separate said roll into two or more rolls of narrower fiberglass fabric, wherein at least one of said narrow fiberglass fabrics is less than about 50 mm wide after removing said removable connecting yarn.
Claim 2
Independent Claim
100 words
A method of making narrow fiberglass fabrics, comprising the steps of: knitting a fiberglass fabric comprising: at least one removable connecting yarn in the warp direction of the fabric, said removable connecting yarn being dissoluble or combustible; and a plurality of fiberglass fabric yarns; winding said connected knit fabric into a wide roll; and then removing said removable connecting yarn from said wide roll to thereby separate said roll into two or more rolls of narrower fiberglass fabric, wherein at least one of said narrow fiberglass fabrics is less than about 50 mm wide after removing said removable connecting yarn.
Claim 3
Dependent Claim
39 words
A method according to claim 1, wherein: said removable connecting yarn is combustible; said fiberglass fabric yarn resists combustion; and wherein said removing step comprises heat-setting said fabric at a temperature sufficient to combustibly remove said removable connecting yarn.
Claim 4
Dependent Claim
26 words
A method according to claim 2, wherein: said removable connecting yarn comprises fibers selected from the group consisting of synthetic polymer fibers and natural organic fibers.
Claim 5
Dependent Claim
54 words
A method according to claim 2, wherein said removable connecting yarn comprises fibers selected from the group consisting of acetate azlon, rayon, triacetate, acrylic, aramid, nylon, poly(1-butene), polyethylene, poly(3-methyl-1-butene), poly(1-pentene), polypropylene, polystyrene, polyester, polytetrafluoroethylene, poly(vinyl alcohol), poly(vinyl chloride), poly(vinylidine chloride), abaca, cotton, flax, hemp, jute, kapok, linen, ramie, sisal, wool, mohair, vicuna, and silk.
Claim 6
Dependent Claim
24 words
A method according to claim 2, wherein said removable connecting yarn comprises fibers selected from the group consisting of polyethylene, polypropylene, polyester, and rayon.
Claim 7
Dependent Claim
30 words
A method according to claim 1, wherein said removable connecting yarn is knit into said fabric as one or more laid-in stitches, said laidin stitches connecting two or more fabrics.
Claim 8
Dependent Claim
31 words
A method according to claim 5, wherein said removable connecting yarn is knit into said fabric as two or more adjacent laid-in stitches, said laid-in stitches connecting two or more fabrics.
Claim 9
Dependent Claim
22 words
A method according to claim 2, further comprising the step of: coating said narrow inorganic fabric with a moisture-curable isocyanate-terminated polyurethane prepolymer.
Claim 10
Dependent Claim
46 words
A method according to claim 1, wherein: said wide fabric is at least 50 mm wide prior to removal of said removable connecting yarn; and at least one of said narrow inorganic fabrics is less than about 30 mm wide after removing said removable connecting yarn.
Claim 11
Dependent Claim
46 words
A method according to claim 2, wherein: said wide fabric is at least 100 mm wide prior to removal of said removable connecting yarn; and at least one of said narrow inorganic fabrics is less than about 50 mm wide after removing said removable connecting yarn.
References Cited (Backward Citations)
GB612495A
Cited
US2653466A
Cited
US2609569A
Cited
US3686725A
Cited
US3787272A
Cited
US3793686A
Cited
US3848556A
Cited
US3859825A
Cited
US3945096A
Cited
US4376438A
Cited
JPS53143750A
Cited
US4411262B1
Cited
US4411262A
Cited
US4370871A
Cited
FR2452541A1
Cited
US4502479A
Cited
US4433680A
Cited
US4609578A
Cited
US4667661A
Cited
GB2189421A
Cited
US4668563A
Cited
US4759106A
Cited
US4745912A
Cited
US5014403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-10 | 1998-04-11 | 1998-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-10 | 2002-04-11 | 2002-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-10 | 2006-04-11 | 2006-10-11 | $7700.00 | Window Closed / Lapsed |