US4119748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel cord reinforced plastic materials
Assignee: Bekaert NV SA
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Filing: 1976-05-26
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Granted: 1978-10-10
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Expires: 1996-05-26
Abstract
Abstract Reinforced plastic articles such as pipes, receptacles and sheet-like laminated structures wherein the reinforcing material comprises at least one layer of a combination of glass fibers and steel cord; processes for making same.
Inventors
- 👤 Germain Verbauwhede
- 👤 Frans Coopman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:23
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/16; B; B29; B29C; B29C70/00; B29K; B29K2309/00; B29K2309/08; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24124; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31529; Y10T428/31551; Y10T428/31616; Y10T428/31678; Y10T428/31681; Y10T442/00; Y10T442/60; Y10T442/654
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
62 words
A reinforced shaped synthetic composite comprising a reinforcing material consisting essentially of at least one layer of a combination of glass fibers and steel cord, said combination comprising steel cord at least partially embedded in glass fiber rovings having substantially the same orientation as the steel cord, a synthetic resin matrix material, said glass fiber rovings being impregnated by said matrix material.
Claim 2
Dependent Claim
62 words
A reinforced shaped synthetic composite comprising a reinforcing material consisting essentially of at least one layer of a combination of glass fibers and steel cord, said combination comprising steel cord at least partially embedded in glass fiber rovings having substantially the same orientation as the steel cord, a synthetic resin matrix material, said glass fiber rovings being impregnated by said matrix material.
Claim 3
Dependent Claim
26 words
A composite according to claim 1, wherein said combination is sandwiched between at least one woven steel cord layer and at least one glass fiber fabric.
Claim 4
Dependent Claim
14 words
A composite according to claim 2 wherein said fabric is a non woven fabric.
Claim 5
Dependent Claim
17 words
A composite according to claim 2, wherein a plurality of superimposed layers of said combination are present.
Claim 6
Dependent Claim
19 words
A composite according to claim 4, wherein glass fiber layers are situated interbetween the superimposed layers of said combinations.
Claim 7
Dependent Claim
25 words
A composite according to claim 5 wherein at least a part of said glass fiber layers are transversely oriented to the layers of said combinations.
Claim 8
Dependent Claim
12 words
A composite according to claim 1 in the form of a pipe.
Claim 9
Dependent Claim
15 words
A composite according to claim 7 wherein said combination is axially oriented in the pipe.
Claim 10
Dependent Claim
15 words
A composite according to claim 7 wherein said combination is circumferentially oriented in the pipe.
Claim 11
Dependent Claim
15 words
A composite according to claim 9 wherein said combination is helically oriented in the pipe.
Claim 12
Dependent Claim
29 words
A composite according to claim 7 wherein a first portion of said combinations are axially oriented and a second portion of said combinations are circumferentially oriented in said pipe.
Claim 13
Dependent Claim
28 words
A composite according to claim 7 wherein at least one reinforcing substructure comprising at least one glass fiber layer sandwiched by two layers of said combinations is present.
Claim 14
Dependent Claim
14 words
A composite according to claim 1 in the form of a sheet-like laminated structure.
Claim 15
Dependent Claim
18 words
A composite according to claim 13 wherein a number of said combinations are unidirectionally oriented in said structure.
Claim 16
Dependent Claim
29 words
A composite according to claim 13 wherein a number of said combinations are oriented in one direction whereas another number of said combinations are oriented transversely to said direction.
Claim 17
Dependent Claim
27 words
A composite according to claim 13 and including at least one reinforcing substructure comprising at least one glass fiber layer sandwiched by two layers of said combination.
Claim 18
Dependent Claim
17 words
A composite according to claim 1 in the form of a container having a laminated wall structure.
Claim 19
Dependent Claim
20 words
A composite according to claim 17 comprising a cylindrical body portion whereby said combinations are axially oriented in said portion.
Claim 20
Dependent Claim
20 words
A composite according to claim 17 comprising a cylindrical body portion whereby said combinations are circumferentially oriented in said portion.
Claim 21
Dependent Claim
15 words
A composite according to claim 19 wherein said combinations are helically oriented in said portion.
Claim 22
Dependent Claim
35 words
A composite according to claim 17 comprising a cylindrical body portion, whereby a first plurality of said combinations are axially oriented and a second plurality of said combinations are circumferentially oriented in said body portion.
Claim 23
Dependent Claim
31 words
A composite according to claim 17 comprising a cylindrical body portion including at least one reinforcing substructure, comprising at least one glass fiber layer sandwiched by two layers of said combinations.
Claim 24
Dependent Claim
16 words
A composite according to claim 1 wherein the steel cord is substantially free of torsional stresses.
Claim 25
Dependent Claim
22 words
A composite according to claim 1 wherein the steel cord is under a tension at least sufficient to eliminate its structural elongation.
Claim 26
Dependent Claim
36 words
A composite according to claim 1 wherein the steel cord is composed of a core wire surrounded by a number of sheathing wires, each having a diameter not in excess of that of said core wire.
Claim 27
Dependent Claim
25 words
A composite according to claim 25 wherein said core wire has a diameter of at least 0.20mm and is surrounded by four to seven wires.
Claim 28
Dependent Claim
21 words
A composite according to claim 1 wherein the steel cord is composed of a coreless strand of two to five wires.
Claim 29
Dependent Claim
19 words
A composite according to claim 27 wherein said wires each have a diameter between 0.15 mm and 0.60 mm.
Claim 30
Dependent Claim
19 words
A composite according to claim 1 wherein the steel cord is composed of a number of strands twisted together.
Claim 31
Dependent Claim
22 words
A composite according to claim 1 wherein the steel cord is composed of a core strand surrounded by a number of wires.
Claim 32
Dependent Claim
22 words
A composite according to claim 1 wherein the steel cord is composed of a core wire surrounded by a number of strands.
Claim 33
Dependent Claim
12 words
A composite according to claim 1 including a matrix of thermosetting resin.
Claim 34
Dependent Claim
13 words
A composite according to claim 32 wherein said resin is a polyester resin.
Claim 35
Dependent Claim
13 words
A composite according to claim 32 wherein said resin is an epoxy resin.
Claim 36
Dependent Claim
13 words
A composite according to claim 32 wherein the matrix includes a filler material.
Claim 37
Dependent Claim
28 words
A composite according to claim 35 wherein the filler is an inorganic material and is present in an amount of up to 60% by weight of the resin.
Claim 38
Dependent Claim
42 words
A composite as in claim 1 including a plurality of layers of said reinforcing material and wherein the ratio of the number of steel cords to the number of glass fiber rovings in each of said layers is not greater than two.
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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) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |