Patent US4067260A successfully refreshed from Google Patents.
US4067260A
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US
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Rack and pinion and adhesion drive locomotive
Assignee: Schweizerische Lokomotiv und Maschinenfabrik AG (SLM)
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Filing: 1975-12-29
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Granted: 1978-01-10
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Expires: 1995-12-29
Abstract
Abstract Two sets of independently rotatable gear wheels are interconnected between the differential gear coupled to the motor and the two respective reduction drives coupled to the gear wheel rack and pinion drive and adhesion wheel drive. The sets of gear wheels are connected at different drive positions to the differential gear to permit a reduction in stresses in the gear wheel drive and associated rack. A blocking device which is used to block the drive of the gear wheel when needed also allows the adhesion wheel drive to be driven at a higher rate. A clutch is used to vary the drive between the gear wheel and adhesion wheel drive.
Inventors
- 👤 Emil Finsterwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:24
CPC Classifications
B; B61; B61C; B61C9/00; B61C9/38; B61C11/00; B61C11/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
139 words
A transmission for a railway vehicle having a drive motor, a gear wheel rack and pinion drive and an adhesion wheel drive, said transmission including a differential gear drivingly connected with said motor, said differential gear having two output drive positions; a first reduction drive having a first set of gears connected to said adhesion wheel drive and to a first drive position of said differential gear; a second reduction drive having a second set of gears connected to said gear wheel drive and to a second drive position of said differential gear, said gears of said second set of gears being independently driven from said gears of said first set of gears; and a clutch for selectively coupling said first and said second sets of gears together for simultaneous rotation at said first and said second drive positions.
Claim 2
Dependent Claim
139 words
A transmission for a railway vehicle having a drive motor, a gear wheel rack and pinion drive and an adhesion wheel drive, said transmission including a differential gear drivingly connected with said motor, said differential gear having two output drive positions; a first reduction drive having a first set of gears connected to said adhesion wheel drive and to a first drive position of said differential gear; a second reduction drive having a second set of gears connected to said gear wheel drive and to a second drive position of said differential gear, said gears of said second set of gears being independently driven from said gears of said first set of gears; and a clutch for selectively coupling said first and said second sets of gears together for simultaneous rotation at said first and said second drive positions.
Claim 3
Dependent Claim
29 words
A transmission as set forth in claim 1 which further includes a blocking means for blocking the transmission of power from said differential gear to said gear wheel drive.
Claim 4
Dependent Claim
21 words
A transmission as set forth in claim 2 wherein said blocking means is a brake disposed about said gear wheel drive.
Claim 5
Dependent Claim
38 words
A transmission as set forth in claim 2 wherein said blocking means is a brake located at said second drive position for braking said gear wheel drive to effect an increase in speed in said adhesion wheel drive.
References Cited (Backward Citations)
US1027073A
Cited
US1027074A
Cited
US1027077A
Cited
US1027078A
Cited
US2316223A
Cited
AT215469B
Cited
DE1177670B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |