US4463652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed braiding
Assignee: Federal Mogul Systems Protection Group Inc
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Filing: 1980-09-25
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Granted: 1984-08-07
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Expires: 2000-09-25
Abstract
Abstract An overcoatable machine-made braid may be formed at high-speeds and directly from producer's low-twist, single-yarns of continuous filament, inorganic materials by this process which treats the yarn prior to or during braiding with a lubricant liquid. The treatment enables such single-yarns, which tend to be brittle, to be processed on modern high-speed braiding machines without excessive fibrillation of the yarn, duplicating overcoatable braid constructions using costlier plied twisted-pair-yarns. Additionally, the treatment enables advantage to be taken of the intrinsically greater width to depth ratio of single-yarns compared to their braid-production equivalent twisted-pair-yarns. The resulting braids are lighter in weight, have a finer hand and can be more smoothly overcoated.
Inventors
- 👤 Pierre Monget
- 👤 Etienne Naffrechoux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
D; D04; D04C; D04C3/00; D04C3/48; D04C1/00; D04C1/06; D04C1/12
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
104 words
A single-yarn braiding process for forming a braid from a plurality of continuous monofilament, or a plurality of continuous multifilament, inorganic, single-yarns said multifilament yarns having 300 to 400 filaments per yarn and less than 40 twists per meter, which process comprises: (a) applying to said single-yarns a lubricant liquid selected to prevent filament breakage and fibril formation during braiding by contacting said yarns with said lubricant liquid during winding of said yarns onto braiding machine bobbins; and (b) machine braiding the lubricated yarns at a rate above 100 interlacings per minute to form a braid which is substantially free from fibrils projecting therefrom.
Claim 2
Dependent Claim
104 words
A single-yarn braiding process for forming a braid from a plurality of continuous monofilament, or a plurality of continuous multifilament, inorganic, single-yarns said multifilament yarns having 300 to 400 filaments per yarn and less than 40 twists per meter, which process comprises: (a) applying to said single-yarns a lubricant liquid selected to prevent filament breakage and fibril formation during braiding by contacting said yarns with said lubricant liquid during winding of said yarns onto braiding machine bobbins; and (b) machine braiding the lubricated yarns at a rate above 100 interlacings per minute to form a braid which is substantially free from fibrils projecting therefrom.
Claim 3
Dependent Claim
106 words
A single-yarn braiding process for forming a braid from a plurality of continuous monofilament, or a plurality of continuous multifilament, inorganic, single-yarns said multifilament yarns having 300 to 400 filaments per yarn and less than 40 twists per meter, which process comprises: (a) applying to said single-yarns a lubricant liquid selected to prevent filament breakage and fibril formation during braiding by contacting said yarns against a licking roll, said licking roll rotating through a bath of said lubricant liquid; and (b) machine braiding the lubricated yarns at a rate above 100 interlacings per minute to form a braid which is substantially free from fibrils projecting therefrom.
Claim 4
Dependent Claim
106 words
A single-yarn braiding process for forming a braid from a plurality of continuous monofilament, or a plurality of continuous multifilament, inorganic, single-yarns said multifilament yarns having 300 to 400 filaments per yarn and less than 40 twists per meter, which process comprises: (a) applying to said single-yarns a lubricant liquid selected to prevent filament breakage and fibril formation during braiding by contacting said yarns against a licking roll, said licking roll rotating through a bath of said lubricant liquid; and (b) machine braiding the lubricated yarns at a rate above 100 interlacings per minute to form a braid which is substantially free from fibrils projecting therefrom.
Claim 5
Dependent Claim
115 words
A single yarn braiding process for forming a braid from a plurality of continuous monofilament, or a plurality of continuous multifilament, inorganic, single-yarns said multifilament yarns having 300 to 400 filaments per yarn and less than 40 twists per meter, which process comprises: (a) applying to said single-yarns a lubricant liquid selected to prevent filament breakage and fibril formation during braiding in an amount such that the yarns when braided carry 2 to 6 percent by weight of lubricant liquid, based on the weight of the dry yarn; and (b) machine braiding the lubricated yarns at a rate above 100 interlacings per minute to form a braid which is substantially free from fibrils projecting therefrom.
Claim 6
Dependent Claim
115 words
A single yarn braiding process for forming a braid from a plurality of continuous monofilament, or a plurality of continuous multifilament, inorganic, single-yarns said multifilament yarns having 300 to 400 filaments per yarn and less than 40 twists per meter, which process comprises: (a) applying to said single-yarns a lubricant liquid selected to prevent filament breakage and fibril formation during braiding in an amount such that the yarns when braided carry 2 to 6 percent by weight of lubricant liquid, based on the weight of the dry yarn; and (b) machine braiding the lubricated yarns at a rate above 100 interlacings per minute to form a braid which is substantially free from fibrils projecting therefrom.
Claim 7
Dependent Claim
21 words
A process in accordance with any one of claims 1, 2 or 3 wherein the lubricant liquid comprises an oily hydrocarbon.
Claim 8
Dependent Claim
21 words
A process in accordance with any one of claims 1, 2 or 3 wherein the oily hydrocarbon comprises a saturated hydrocarbon.
Claim 9
Dependent Claim
27 words
A process in accordance with any one of claims 1, 2 or 3 wherein the lubricant liquid comprises a blend of polyglycol ether and condensed fatty acids.
Claim 10
Dependent Claim
21 words
A process in accordance with any one of claims 1, 2 or 3 wherein the lubricant liquid comprises an oily material.
Claim 11
Dependent Claim
24 words
A process in accordance with any one of claims 1, 2 or 3 wherein the lubricant liquid is liquid or semiliquid at 15° C.
Claim 12
Dependent Claim
28 words
A process in accordance with any one of claims 1, 2 or 3 wherein the relative density of the lubricant liquid is at least 0.8 at 20° C.
Claim 13
Dependent Claim
26 words
A process in accordance with claim 9 wherein the relative density of the lubricant liquid is within the range from 0.8 to 0.9 at 20° C.
Claim 14
Dependent Claim
33 words
A process in accordance with any one of claims 1, 2 or 3 wherein the kinematic viscosity of the lubricant liquid is within the range from 3 to 35 centistokes at 20° C.
Claim 15
Dependent Claim
34 words
A process in accordance with claim 1 or claim 2 wherein the amount of lubricant liquid carried by the yarns when braided is at least 3 percent by weight of the dry yarn weight.
Claim 16
Dependent Claim
29 words
A process in accordance with any one of claims 1, 2 or 3 wherein the lubricant liquid is at or above about 25° C. when applied to the yarns.
Claim 17
Dependent Claim
33 words
A process in accordance with any one of claims 1, 2 or 3 wherein braiding is carried out on a braiding machine operated at speeds at or above 420 yarn interlacings per minute.
Claim 18
Dependent Claim
25 words
A process in accordance with any one of claims 1, 2 or 3 wherein substantially all of the yarns to be braided are monofilament single-yarns.
Claim 19
Dependent Claim
24 words
A process in accordance with any one of claims 1, 2 or 3 wherein substantially all the yarns to be braided are multifilament single-yarns.
Claim 20
Dependent Claim
25 words
A process in accordance with any one of claims 1, 2 or 3 wherein substantially all of the yarns to be braided are said single-yarns.
Claim 21
Dependent Claim
20 words
A process in accordance with any one of claims 1, 2 or 3 wherein said single-yarns themselves are substantially untwisted.
Claim 22
Dependent Claim
21 words
A process in accordance with any one of claims 1, 2 or 3 wherein said single-yarns are composed of glass filaments.
Claim 23
Dependent Claim
21 words
A process in accordance with any one of claims 1, 2 or 3 wherein said single-yarns are composed of ceramic filaments.
Claim 24
Dependent Claim
21 words
A process in accordance with any one of claims 1, 2 or 3 wherein said single-yarns are composed of silica filaments.
Claim 25
Dependent Claim
21 words
A process in accordance with any one of claims 1, 2 or 3 wherein said single-yarns are composed of carbon filaments.
Claim 26
Dependent Claim
27 words
A process in accordance with any one of claims 1, 2 or 3 wherein said single-yarns comprise a blend of filaments of two or more inorganic materials.
Claim 27
Dependent Claim
27 words
A process in accordance with any one of claims 1, 2 or 3 wherein said single-yarns comprise a blend of single-yarns of two or more inorganic materials.
Claim 28
Dependent Claim
27 words
A process in accordance with any one of claims 1, 2 or 3 wherein at least some of said single-yarns are less than 600 tex in weight.
Claim 29
Dependent Claim
26 words
A process in accordance with any one of claims 1, 2 or 3 wherein substantially all of said single-yarns are less than 600 tex in weight.
Claim 30
Dependent Claim
23 words
A process in accordance with any one of claims 1, 2 or 3 which further comprises: (c) removing the lubricant liquid after braiding.
Claim 31
Dependent Claim
19 words
A process in accordance with claim 27 wherein the lubricant liquid is removed by flame treatment of the braid.
Claim 32
Dependent Claim
17 words
A single-yarn braid produced by a process according to any one of claims 1, 2 or 3.
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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) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |