Patent US4809616A successfully refreshed from Google Patents.
US4809616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for controlling drive couplings of the axles of a locomotive
Assignee: Creusot Loire SA
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Filing: 1987-04-30
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Granted: 1989-03-07
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Expires: 2007-04-30
Abstract
Abstract Device for controlling drive couplings of motor bogie axles of a locomotive. The axles are individually driven by motors (4, 5) controlled by a control assembly receiving signals from sensors (6) which are constituted for measuring the vertical load of at least one motor axle and are mounted on the primary suspension of the axle.
Inventors
- 👤 Daniel Piel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:32
CPC Classifications
B; B61; B61C; B61C15/00; B61C15/08; B61C15/12; B60; B60L; B60L3/00; B60L3/10; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A device for preventing nose lift of a locomotive bogie that has a pair of axles individually driven by respective electric motors, said device comprising sensor means mounted on a primary suspension of one of said axles for measuring a vertical load on said one axle and producing a corresponding signal, and means responsive to said signal produced by said sensor means for controlling said motors so as to vary the driving of one of said motors relative to the other motor in a manner that prevents nose lift of said bogie.
Claim 2
Independent Claim
92 words
A device for preventing nose lift of a locomotive bogie that has a pair of axles individually driven by respective electric motors, said device comprising sensor means mounted on a primary suspension of one of said axles for measuring a vertical load on said one axle and producing a corresponding signal, and means responsive to said signal produced by said sensor means for controlling said motors so as to vary the driving of one of said motors relative to the other motor in a manner that prevents nose lift of said bogie.
Claim 3
Dependent Claim
23 words
A device according to claim 1, wherein said sensor means comprises sensors mounted on plates seated above elastic supports of said primary suspension.
Claim 4
Dependent Claim
13 words
A device according to claim 2, wherein said sensor means comprises constraint gauges.
Claim 5
Dependent Claim
13 words
A device according to claim 2, wherein said sensor means comprises quartz sensors.
Claim 6
Dependent Claim
45 words
A device according to claim 2, wherein said means for controlling said motors comprises signal processing means for receiving signals produced by said sensor means and for producing therefrom an amplified and filtered mean value that is applied to a circuit which controls said motors.
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) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |