Patent US3739108A successfully refreshed from Google Patents.
US3739108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed vehicle current collecting device
Assignee: Merlin Gerin SA
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Filing: 1971-02-03
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Granted: 1973-06-12
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Expires: 1991-02-03
Abstract
Abstract Electric current collecting device for feeding of a high speed vehicle which comprises a movable shuttle, or current collecting head, mechanically guided by feed rails and contact shoes biased against these rails. Movable and stationary guide shoes are secured to the shuttle to reinforce the guide action by excessive off-centering of the shuttle, the guide shoes being in normal operating positions spaced from the feed rails.
Inventors
- 👤 J Payen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:37
CPC Classifications
B; B60; B60L; B60L5/00; B60L5/40; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
An electrical distribution and current collecting system of the type having a stationary rail and a contact shoe assembly movable along said rail, said contact shoe assembly comprising: a support member; at least one row of normal duty contact shoes individually guided by said support member for movement perpendicularly to said rail; a plurality of contact pressure springs, at least one for each normal duty contact shoe, to resiliently bias said normal duty contact shoes individually against said rail in electrical sliding contact engagement therewith; a plurality of emergency contact shoes longitudinally aligned with said normal duty contact shoes and individually guided by said support member for movement perpendicularly to said rail; a plurality of further springs, at least one for each emergency contact shoe, to individually bias said emergency contact shoes resiliently towards said rail; and stop means to limit the stroke of movement of said emergency contact shoes in the direction of said rail so that said emergency contact shoes engage said rail only when said normal duty contact shoes are excessively urged against said contact pressure springs.
Claim 2
Dependent Claim
180 words
An electrical distribution and current collecting system of the type having a stationary rail and a contact shoe assembly movable along said rail, said contact shoe assembly comprising: a support member; at least one row of normal duty contact shoes individually guided by said support member for movement perpendicularly to said rail; a plurality of contact pressure springs, at least one for each normal duty contact shoe, to resiliently bias said normal duty contact shoes individually against said rail in electrical sliding contact engagement therewith; a plurality of emergency contact shoes longitudinally aligned with said normal duty contact shoes and individually guided by said support member for movement perpendicularly to said rail; a plurality of further springs, at least one for each emergency contact shoe, to individually bias said emergency contact shoes resiliently towards said rail; and stop means to limit the stroke of movement of said emergency contact shoes in the direction of said rail so that said emergency contact shoes engage said rail only when said normal duty contact shoes are excessively urged against said contact pressure springs.
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |