Patent US4379331A successfully refreshed from Google Patents.
US4379331A
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US
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Failure warning for a vehicle information processing system
Assignee: MINISTER OF TRANSORT OF UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND 2 MARSHAM ST LONDON SW1P 3EB
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Filing: 1980-08-18
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Granted: 1983-04-05
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Expires: 2000-08-18
Abstract
Abstract A failure warning system for a wheeled vehicle which has an information processor for processing wheel rotation information. The system is applicable to a vehicle having an anti-skid or brake anti-lock device and which also has a bar light speedometer display. The power supply for the display derives from a point in the processor which is live at all times when the processor is functioning normally. Malfunction in the processor which causes loss of processor signal results in a null speedometer reading. A failure warning is thereby provided with a minimum of additional hardware which permits a minimum of difficulty in failure detection in the processor.
Inventors
- 👤 Peter M. F. Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:51
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/88; B60T8/885; B60T2270/00; B60T2270/40; B60T2270/416
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A failure warning means for a vehicle wheel rotation control system including: a wheel rotation control section for processing wheel rotation information signals and providing wheel rotation control signals; a speedometer; a speedometer power line for supplying a driving voltage to the speedometer to give a speedometer reading; wherein the speedometer power line connects the speedometer and a point in the wheel rotation control section such that the speedometer driving voltage derives from signals in the wheel rotation control section so that failure of the control section produces a null speedometer reading.
Claim 2
Dependent Claim
92 words
A failure warning means for a vehicle wheel rotation control system including: a wheel rotation control section for processing wheel rotation information signals and providing wheel rotation control signals; a speedometer; a speedometer power line for supplying a driving voltage to the speedometer to give a speedometer reading; wherein the speedometer power line connects the speedometer and a point in the wheel rotation control section such that the speedometer driving voltage derives from signals in the wheel rotation control section so that failure of the control section produces a null speedometer reading.
Claim 3
Dependent Claim
32 words
A failure warning means for a vehicle wheel rotation control system as in claim 1 wherein said wheel rotation control section comprises a section for controlling the locking of the vehicle brakes.
Claim 4
Dependent Claim
89 words
A failure warning means for a vehicle wheel rotation control system as in claim 2 comprising: an information correlation section for correlating said wheel rotation information signals; and connected for transmission of voltage signals via an intermediary connection to; a comparator stage which is connected to; a power stage such that, when wheel deceleration exceeds a predetermined maximum, a signal is transmitted from said comparator stage to said power stage which causes brake pressure to be reduced; and wherein said power line connects said intermediary connection and said speedometer.
Claim 5
Dependent Claim
28 words
A failure warning means for a vehicle wheel rotation control system as in claim 1, wherein said wheel rotation control section comprises a section for controlling vehicle skidding.
Claim 6
Dependent Claim
94 words
A failure warning means for a vehicle wheel rotation control system as in claim 4 comprising: an information correlation section for correlating said wheel rotation information signals; and connected for transmission of voltage signals via an intermediary connection to; a comparator stage which is connected to; a power stage coupled to a throttle control such that, when wheel acceleration exceeds a predetermined maximum, a signal is transmitted from said comparator stage to said power stage which causes throttle power to be reduced; and wherein said power line connects said intermediary connection and said speedometer.
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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) | 1986-04-04 | 1986-10-04 | 1987-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-04 | 1990-10-04 | 1991-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-04 | 1994-10-04 | 1995-04-05 | $7700.00 | Window Closed / Lapsed |