US4005255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruded composite section
Assignee: Rio Tinto Switzerland AG
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Filing: 1975-04-04
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Granted: 1977-01-25
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Expires: 1995-04-04
Abstract
Abstract A composite section with a body mainly of light metal which has embedded in it inserts of a metal of higher strength. The inserts are not round in cross section and engage in the matrix by virtue of their shape.
Inventors
- 👤 Alfred Wagner
- 👤 Hermann Kidratschky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:36
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/22; B21C23/24; B60; B60M; B60M1/00; B60M1/30; B60M1/302; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12403; Y10T428/12451; Y10T428/12486
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
88 words
An extruded composite section, suitable for use as an electrical conductor, comprising, in combination: a longitudinal body composed of an aluminum alloy; and at least one insert having non-circular cross section and being composed of a substance having a greater strength and wear-resistance than said aluminum alloy; said insert being disposed in said body with its periphery entirely surrounded by said aluminum alloy and extending throughout at least a major portion of the length of said body; said insert having a cross section for engaging said body securely.
Claim 2
Dependent Claim
88 words
An extruded composite section, suitable for use as an electrical conductor, comprising, in combination: a longitudinal body composed of an aluminum alloy; and at least one insert having non-circular cross section and being composed of a substance having a greater strength and wear-resistance than said aluminum alloy; said insert being disposed in said body with its periphery entirely surrounded by said aluminum alloy and extending throughout at least a major portion of the length of said body; said insert having a cross section for engaging said body securely.
Claim 3
Dependent Claim
32 words
The composite section as claimed in claim 1, wherein there are at least two of said inserts and said composite section possesses at least one axis of symmetry within its cross section.
Claim 4
Dependent Claim
27 words
The composite section as claimed in claim 1, wherein there are a plurality of said inserts disposed near opposite sides of said body and spaced in rows.
Claim 5
Dependent Claim
34 words
The composite section as claimed in claim 1, wherein said body has a frame-like hollow cross section and there are a plurality of said inserts disposed in rows near opposite sides of said body.
Claim 6
Dependent Claim
40 words
The composite section as claimed in claim 1, wherein there are a plurality of said inserts disposed in rows near two opposite sides of said body and another two opposite sides of said body each have a groove defined therein.
Claim 7
Dependent Claim
21 words
The composite section as claimed in claim 1, wherein said insert has a cross section including a dove-tailed type of notch.
Claim 8
Dependent Claim
17 words
The composite section as claimed in claim 1, wherein said insert includes at least one undercut groove.
Claim 9
Dependent Claim
18 words
The composite section as claimed in claim 1, wherein said insert comprises a plurality of sections welded together.
References Cited (Backward Citations)
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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) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |