US3939299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminium alloy conductor wire
Assignee: Balfour Beatty PLC
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Filing: 1974-07-31
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Granted: 1976-02-17
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Expires: 1994-07-31
Abstract
Abstract A conductor wire is composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0, preferably 0.4 to 0.6, weight percent iron; between 0.16 and 1.2, preferably 0.3 to 1.0, weight percent silicon; and trace quantities of conventional impurities. The conductor wire has a higher tensile strength than wires of known aluminium alloys which contain similar quantities of iron and is especially suitable for use in telecommunication cables, wiring cables and overhead conductors. The conductor wire may have a cladding of copper or copper alloy.
Inventors
- 👤 Peter Michael Raw
- 👤 Rees Jenkin Llewellyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:01
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/02; H01B1/023; C; C22; C22C; C22C21/00; C22C21/02; H01B11/00; H01B5/00; H01B5/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12333; Y10T428/12493; Y10T428/12736; Y10T428/1275
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
37 words
A conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities.
Claim 2
Dependent Claim
37 words
A conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities.
Claim 3
Dependent Claim
33 words
A conductor as claimed in claim 1, wherein the silicon content of the aluminium alloy lies in the range 0.3 to 0.5 weight percent and the iron content is approximately 0.5 weight percent.
Claim 4
Dependent Claim
18 words
A conductor wire as claimed in claim 1, which has at least one covering layer of insulating material.
Claim 5
Dependent Claim
37 words
A conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.0 weight percent silicon; and trace quantities of conventional impurities.
Claim 6
Dependent Claim
37 words
A conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.0 weight percent silicon; and trace quantities of conventional impurities.
Claim 7
Dependent Claim
37 words
A conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.4 and 0.6 weight percent iron; between 0.3 and 1.0 weight percent silicon; and trace quantities of conventional impurities.
Claim 8
Dependent Claim
37 words
A conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.4 and 0.6 weight percent iron; between 0.3 and 1.0 weight percent silicon; and trace quantities of conventional impurities.
Claim 9
Dependent Claim
36 words
A conductor wire as claimed in claim 3, having bonded to its outer surface a cladding of copper or a copper alloy, the cladding constituting the minor proportion of the cross-sectional area of the conductor wire.
Claim 10
Dependent Claim
74 words
A conductor wire consisting of an inner part (constituting the major proportion of the cross-sectional area of the conductor wire) composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities, and, bonded to the inner part, an outer part (constituting the minor proportion of the cross-sectional area of the conductor wire) of copper or a copper alloy.
Claim 11
Dependent Claim
74 words
A conductor wire consisting of an inner part (constituting the major proportion of the cross-sectional area of the conductor wire) composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities, and, bonded to the inner part, an outer part (constituting the minor proportion of the cross-sectional area of the conductor wire) of copper or a copper alloy.
Claim 12
Dependent Claim
79 words
An electric cable comprising at least one conductor, the conductor or at least one of the conductors comprising at least one conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities, provided with at least one covering layer of insulating material and, enclosing the insulated conductor or insulated conductors, an outer protective sheath.
Claim 13
Dependent Claim
79 words
An electric cable comprising at least one conductor, the conductor or at least one of the conductors comprising at least one conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities, provided with at least one covering layer of insulating material and, enclosing the insulated conductor or insulated conductors, an outer protective sheath.
Claim 14
Dependent Claim
79 words
An electric cable comprising at least one conductor, the conductor or at least one of the conductors comprising at least one conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.4 and 0.6 weight percent iron; between 0.3 and 1.0 weight percent silicon; and trace quantities of conventional impurities, provided with at least one covering layer of insulating material and, enclosing the insulated conductor or insulated conductors, an outer protective sheath.
Claim 15
Dependent Claim
79 words
An electric cable comprising at least one conductor, the conductor or at least one of the conductors comprising at least one conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.4 and 0.6 weight percent iron; between 0.3 and 1.0 weight percent silicon; and trace quantities of conventional impurities, provided with at least one covering layer of insulating material and, enclosing the insulated conductor or insulated conductors, an outer protective sheath.
Claim 16
Dependent Claim
57 words
A telecommunication cable comprising a multiplicity of insulated conductors, each conductor comprising a conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities, and a waterproof sheath enclosing the insulated conductors.
Claim 17
Dependent Claim
57 words
A telecommunication cable comprising a multiplicity of insulated conductors, each conductor comprising a conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities, and a waterproof sheath enclosing the insulated conductors.
Claim 18
Dependent Claim
86 words
A telecommunication cable comprising a multiplicity of insulated conductors, each conductor comprising a conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities, a waterproof sheath enclosing the insulated conductors and, filling the interstices between these insulated conductors and between them and the cable sheath from end to end of the cable length, a water-impermeable medium of a grease-like nature.
Claim 19
Dependent Claim
86 words
A telecommunication cable comprising a multiplicity of insulated conductors, each conductor comprising a conductor wire composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities, a waterproof sheath enclosing the insulated conductors and, filling the interstices between these insulated conductors and between them and the cable sheath from end to end of the cable length, a water-impermeable medium of a grease-like nature.
Claim 20
Dependent Claim
21 words
A telecommunication cable as claimed in claim 11, wherein the insulation of each conductor is a plastics material of cellular form.
Claim 21
Dependent Claim
54 words
An overhead electric conductor comprising at least one stranded layer of wires, wherein at least some of the wires are composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities.
Claim 22
Dependent Claim
54 words
An overhead electric conductor comprising at least one stranded layer of wires, wherein at least some of the wires are composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities.
Claim 23
Dependent Claim
60 words
An overhead electric conductor comprising a core of metallic elements of high tensile strength and, surrounding the core, at least one stranded layer of wires each composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities.
Claim 24
Dependent Claim
60 words
An overhead electric conductor comprising a core of metallic elements of high tensile strength and, surrounding the core, at least one stranded layer of wires each composed of an aluminium alloy consisting of between 98.0 and 99.5 weight percent aluminium; between 0.3 and 1.0 weight percent iron; between 0.16 and 1.2 weight percent silicon; and trace quantities of conventional impurities.
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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) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |