Patent US3749138A successfully refreshed from Google Patents.
US3749138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thick fabrics
Assignee: BP Chemicals Hitco Inc
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Filing: 1969-01-06
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Granted: 1973-07-31
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Expires: 1989-01-06
Abstract
Abstract Fabrics in accordance with the invention are characterized by densely woven bodies of substantial thickness, in which individual warp yarns define angled paths traversing a principal portion of the wall thickness. The warp yarns and lateral fill yarns completely interlock the structure in non-laminar fashion. Seamless thick walled bodies having selectable shapes are woven by methods in which fill yarns are circumferentially fed under tension between spaced and independently controlled warp yarns that are directed radially into a central weaving region, with new warp yarn ends being selectively added. Frustums and other hollow bodies may be woven with progressively increasing diameter, with fill yarns circumferentially disposed about the central axis and warp yarns traversing paths within planes substantially parallel to the central axis, new warp yarn planes being added as the diameter of the body increases. Solid cylindrical shapes may employ a unitary structure defined by a plurality of substantially like segments of a cylinder, each segment having a number of warp planes extending radially and terminating at the outer surface of the cylinder, but having a different selected radial length, with the fill yarn being disposed in substantially concentric or spiral fashion within the cylinder.
Inventors
- 👤 W Rheaume
- 👤 A Campman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:17
CPC Classifications
D; D03; D03D; D03D11/00; D03D25/00; D03D25/005; D03D37/00; Y; Y10; Y10S; Y10S139/00; Y10S139/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
A thick walled, flat fabric body comprising: a plurality of warp yarn planes disposed along the length of the fabric and normal to opposite, planar, broad faces of the fabric, each of the warp yarn planes defined by a plurality of warp yarns, each warp yarn traversing along angled paths across a substantial part of the thickness of said body between said opposite, planar, broad faces, successive warp yarns being incrementally displaced within a warp yarn plane to define interstices between locally intersecting segments of said warp yarns; a plurality of fill yarn lengths disposed within the interstices defined within said warp yarn planes, said fill yarn lengths lying substantially normal to said warp yarn planes, at the region of intersection and substantially parallel to said opposite, planar, broad faces of said body, there being in excess of approximately four fill yarn levels; and wherein said warp yarns and fill yarns comprise substantially carbon yarn material, wherein the density of the body is above approximately 25 percent of the density of carbon, and wherein said fabric body has in excess of approximately 130 warp ends per inch and 200 picks per inch and wherein the density in the as-woven form is above about 30 lbs/ft.3
Claim 2
Dependent Claim
201 words
A thick walled, flat fabric body comprising: a plurality of warp yarn planes disposed along the length of the fabric and normal to opposite, planar, broad faces of the fabric, each of the warp yarn planes defined by a plurality of warp yarns, each warp yarn traversing along angled paths across a substantial part of the thickness of said body between said opposite, planar, broad faces, successive warp yarns being incrementally displaced within a warp yarn plane to define interstices between locally intersecting segments of said warp yarns; a plurality of fill yarn lengths disposed within the interstices defined within said warp yarn planes, said fill yarn lengths lying substantially normal to said warp yarn planes, at the region of intersection and substantially parallel to said opposite, planar, broad faces of said body, there being in excess of approximately four fill yarn levels; and wherein said warp yarns and fill yarns comprise substantially nylon yarn material, wherein the density of the body is approximately 50 percent of the density of nylon and in the as-woven form is above about 35 lbs/ft.3, and Wherein said fabric body has in excess of approximately 100 warp ends per inch and 200 picks per inch.
Claim 3
Dependent Claim
201 words
A thick walled, flat fabric body comprising: a plurality of warp yarn planes disposed along the length of the fabric and normal to opposite, planar, broad faces of the fabric, each of the warp yarn planes defined by a plurality of warp yarns, each warp yarn traversing along angled paths across a substantial part of the thickness of said body between said opposite, planar, broad faces, successive warp yarns being incremenetally displaced within a warp yarn plane to define interstices between locally intersecting segments of said warp yarns; a plurality of fill yarn lengths disposed within the interstices defined within said warp yarn planes, said fill yarn lengths lying substantially normal to said warp yarn planes, at the region of intersection and substantially parallel to said opposite, planar, broad faces of said body, there being in excess of approximately four fill yarn levels; and wherein said warp yarns and fill yarns comprise substantially glass yarn material, wherein the density of the body in the as-woven form is above about 40 percent of the density of glass and above about 65 lbs/ft.3, and wherein said fabric body has in excess of approximately 100 warp ends per inch and 200 picks per inch.
Claim 4
Dependent Claim
197 words
A thick walled, flat fabric body comprising: a plurality of warp yarn planes disposed along the length of the fabric and normal to opposite, planar, broad faces of the fabric, each of the warp yarn planes defined by a plurality of warp yarns, each warp yarn traversing along angled paths across a substantial part of the thickness of said body between said opposite, planar, broad faces, successive warp yarns being incrementally displaced within a warp yarn plane to define interstices between locally intersecting segments of said warp yarns; a plurality of fill yarn lengths disposed within the interstices defined within said warp yarn planes, said fill yarn lengths lying substantially normal to said warp yarn planes, at the region of intersection and substantially parallel to said opposite, planar, broad faces of said body, there being in excess of approximately four fill yarn levels; and wherein said warp yarns and fill yarns comprise substantially rayon yarn material, wherein the density of the body is above approximately 40 percent of the density of rayon and above approximately 40 lbs/ft.3, and wherein said fabric body has in excess of approximately 100 warp ends per inch and 200 picks per inch.
Claim 5
Dependent Claim
147 words
A thick walled, flat fabric comprising: a plurality of warp yarn planes lying substantially transverse to the thickness of the fabric between opposite, planar faces thereof, the warp yarns in the planes traversing diagonal paths of successively alternating direction along the paths, said warp yarns traversing at least the major portion of thickness of the fabric along each diagonal, fill yarns disposed transversely to the warp yarn planes substantially parallel to the opposite, planar faces of the fabric, the fill yarns filling the interstices between the warp yarns, the fabric being substantially homogeneous, the filaments establishing a density of the body in excess of approximately 20 percent of the density of the material of the fabric, the fabric being non-laminar in character and having in excess of about 100 warp ends per inch, about 200 picks per inch, and about 20 lbs/ft.3 density in the as-woven form.
Claim 6
Dependent Claim
178 words
A non-laminar, thick, flat fabric element comprising a plurality of warp yarn planes disposed along the length of said fabric, said warp yarn planes being substantially transverse to the broad faces of said fabric, each warp yarn plane being defined by a plurality of warp yarns disposed in successive zigzag paths along said fabric, said zigzag paths for each warp yarn being successively incrementally advanced relative to tHe other warp yarns, there being in excess of 10 warp yarns per plane and the warp yarns intersecting in multiple fashion to define a plurality of interstices within the fabric, fill yarn disposed substantially transversely to the warp yarn planes and filling the interstices between the warp yarns, there being in excess of 10 fill yarn levels through the thickness of the fabric, the entire structure thus being interlocked, the thickness of the fabric being in excess of one-fourth inch, and the density of the filamentary constituent of the fabric in the as-woven form being in excess of 20 percent of the theoretical density of the material of the yarn.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |