Patent WO1992012158A1 successfully refreshed from Google Patents.
US4870887A
Expired / Lapsed
US
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Braided sleeve
Assignee: Federal Mogul Systems Protection Group Inc
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Filing: 1989-02-27
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Granted: 1989-10-03
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Expires: 2009-02-27
Abstract
Abstract a braided sleeve is formed from a tow of flexible filaments such as glass fibers and a rigid filament such as a stainless steel wire. The rigid filament reduces the tendency of a braided sleeve to fray at its ends, and can cause the end portions of the sleeve to taper inwardly, which can enhance the thermal insulation properties of the sleeve. The sleeve may be coated with polymeric material.
Inventors
- 👤 Marie C. Tresslar
- 👤 Joseph S. Kite, III
- 👤 Michael J. Piotrowski
- 👤 Thomas B. Conaghan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:39
CPC Classifications
D; D04; D04C; D04C1/00; D04C1/06; B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B29C53/68; D04C1/02; D10; D10B; D10B2401/00; D10B2401/04; D10B2401/046; D10B2505/00; D10B2505/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
96 words
A braided sleeve which comprises: (a) first yarns each comprising a tow of relatively flexible filaments; and (b) second yarns comprising at least one relatively rigid filament; the second yarns being distributed evenly around the circumference of the sleeve, and the number of second yarns being from about one third to about two thirds the number of first and second yarns, said second yarn being prestressed to a relatively tight helical form, and said sleeve being braided under tension sufficient to elongate the helices of the yarns in the braid by at least 30% during braiding.
Claim 2
Dependent Claim
96 words
A braided sleeve which comprises: (a) first yarns each comprising a tow of relatively flexible filaments; and (b) second yarns comprising at least one relatively rigid filament; the second yarns being distributed evenly around the circumference of the sleeve, and the number of second yarns being from about one third to about two thirds the number of first and second yarns, said second yarn being prestressed to a relatively tight helical form, and said sleeve being braided under tension sufficient to elongate the helices of the yarns in the braid by at least 30% during braiding.
Claim 3
Dependent Claim
17 words
A braided sleeve as claimed in claim 1, in which the second yarn comprises a metallic wire.
Claim 4
Dependent Claim
35 words
A braided sleeve as claimed in claim 2, in which said metallic wire has a Young's modulus of 10×10 6 to 40×10 6 p.s.i. and an axial stiffness of about 100 to about 7500 pounds.
Claim 5
Dependent Claim
30 words
A braided sleeve as claimed in claim 3, in which the tension is sufficient to elongate the helix of the yarns in the braid by at least 100% during braiding.
Claim 6
Dependent Claim
15 words
A braided sleeve as claimed in claim 4, in which the wire is stainless steel.
Claim 7
Dependent Claim
22 words
A braided sleeve as claimed in claim 5, in which the wire has a diameter of between about 0.003 and 0.015 inches.
Claim 8
Dependent Claim
19 words
A braided sleeve as claimed in claim 1, in which the first yarn comprises a tow of glass fibers.
Claim 9
Dependent Claim
25 words
A braided sleeve as claimed in claim 1, which includes a polymer coating applied to the first and second yarns once they have been braided.
Claim 10
Dependent Claim
18 words
A braided sleeve as claimed in claim 8, in which the material of the polymeric coating is thermoplastic.
Claim 11
Independent Claim
129 words
A method of making a braided sleeve, which comprises braiding together: (a) first yarns each comprising a tow of relatively flexible filaments; and (b) second yarns comprising at least one relatively rigid filament, said relatively rigid filament having a Young's modulus of 10×10 6 to 40×10 6 p.s.i. and an axial stiffness of about 100 to about 7500 pounds; the number of braider carriers bearing the second yarn being from about one third to about two thirds of the total number of carriers used to form the sleeve, and the second yarns being prestressed to a relatively tight helical form and being distributed evenly around the circumference of the sleeve, said sleeve being braided under tension sufficient to elongate the sleeve by at least 30% during the braiding operation.
Claim 12
Independent Claim
129 words
A method of making a braided sleeve, which comprises braiding together: (a) first yarns each comprising a tow of relatively flexible filaments; and (b) second yarns comprising at least one relatively rigid filament, said relatively rigid filament having a Young's modulus of 10×10 6 to 40×10 6 p.s.i. and an axial stiffness of about 100 to about 7500 pounds; the number of braider carriers bearing the second yarn being from about one third to about two thirds of the total number of carriers used to form the sleeve, and the second yarns being prestressed to a relatively tight helical form and being distributed evenly around the circumference of the sleeve, said sleeve being braided under tension sufficient to elongate the sleeve by at least 30% during the braiding operation.
Claim 13
Dependent Claim
18 words
A method as claimed in claim 10, in which the first yarns comprise a tow of glass fibers.
Claim 14
Dependent Claim
17 words
A method as claimed in claim 10, in which the relatively rigid filament is a metallic wire.
Claim 15
Dependent Claim
26 words
A method as claimed in claim 12, in which the metallic wire is a single filament wire having a diameter of about 0.003 to 0.015 inches.
Claim 16
Dependent Claim
18 words
A method as claimed in claim 10 which includes the step of applying heat to the braided yarns.
Claim 17
Dependent Claim
20 words
A method as claimed in claim 10 which includes the step of applying a polymer coating to the braided yarns.
Claim 18
Dependent Claim
22 words
A method as claimed in claim 15, in which the polymer coating is applied to the external surface of the braided yarns.
References Cited (Backward Citations)
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GB863837A
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US4576081A
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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) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |