Patent US5455386A successfully refreshed from Google Patents.
Patent US3830989A successfully refreshed from Google Patents.
US3830989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite conductor for sliding current collectors
Assignee: Merlin Gerin SA
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Filing: 1973-02-02
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Granted: 1974-08-20
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Expires: 1993-02-02
Abstract
Abstract Composite conductor for sliding contact with high speed contact shoes. The conductor comprises a metal rail of high electrical conductivity including a generally dihedral end face and a Vshaped metal contact strip of low friction wear proof material having a poorer electrical conductivity. The contact strip engages the coextensive dihedral end surface which has lateral end flanges bent over the edges of the strip so as to grip the strip and hold the latter firmly against the rail along the whole length thereof.
Inventors
- 👤 D Laurent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:58
CPC Classifications
B; B60; B60M; B60M1/00; B60M1/30; B60M1/302
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
A composite conductor adapted for sliding contact relation with movable current collecting contact shoes, comprising: metal rail means of high electrical conductivity defining a generally dihedral, longitudinally extending concave face; and cross-sectionally V-shaped metal contact strip means of low friction wearproof material engaging said cOncave face substantially coextensively; said rail means including a pair of longitudinally extending gripping flanges bordering said concave face laterally and bent over the marginal side portions of said strip means so as to frame said strip means longitudinally securing thereby said strip means firmly to said rail means.
Claim 2
Dependent Claim
93 words
A composite conductor adapted for sliding contact relation with movable current collecting contact shoes, comprising: metal rail means of high electrical conductivity defining a generally dihedral, longitudinally extending concave face; and cross-sectionally V-shaped metal contact strip means of low friction wearproof material engaging said cOncave face substantially coextensively; said rail means including a pair of longitudinally extending gripping flanges bordering said concave face laterally and bent over the marginal side portions of said strip means so as to frame said strip means longitudinally securing thereby said strip means firmly to said rail means.
Claim 3
Dependent Claim
25 words
A conductor according to claim 1, said marginal side portions being mechanically deformed to enhance the gripping action of said flanges on said side portions.
Claim 4
Dependent Claim
11 words
A conductor according to claim 2, said side portions being knurled.
Claim 5
Dependent Claim
16 words
A conductor according to claim 1, the central portion of said concave face being hollowed out.
Claim 6
Dependent Claim
21 words
A conductor according to claim 1, the dihedral angle of said concave face and of said strip means being about 120*.
Claim 7
Dependent Claim
18 words
A conductor according to claim 1, said strip means being composed of longitudinally aligned abutting double layer strips.
Claim 8
Dependent Claim
21 words
A conductor according to claim 6, each strip comprising an outer sheet of stainless steel covering an inner sheet of aluminum.
Claim 9
Dependent Claim
54 words
A composite conductor comprising: a rail of extruded aluminum defining a longitudinally extending generally dihedral face laterally bordered by a pair of framing portions; and a stainless steel dihedral contact strip covering at least a longitudinal portion of said face coextensively and framed by said framing portions gripping the longitudinal edges of said strip.
Claim 10
Dependent Claim
54 words
A composite conductor comprising: a rail of extruded aluminum defining a longitudinally extending generally dihedral face laterally bordered by a pair of framing portions; and a stainless steel dihedral contact strip covering at least a longitudinal portion of said face coextensively and framed by said framing portions gripping the longitudinal edges of said strip.
References Cited (Backward Citations)
US1620496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |