Patent US5029949A successfully refreshed from Google Patents.
US5029949A
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Circuit configuration for a brake system comprising an anti-locking control
Assignee: Continental Teves AG and Co OHG
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Filing: 1989-04-28
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Granted: 1991-07-09
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Expires: 2009-04-28
Abstract
Abstract A circuit configuration for a brake system including an anti-locking control system, wherein a balanced pressure course is attained in the rear wheel brakes through control according to the "select-low" principle. The circuit configuration is furnished with a supplemental circuit (8) comparing the rotating pattern of the rear wheels during the control and, upon detection of a brake moment difference (ΔM) causes a brake moment correction. This correction can be achieved, for example, by prolongating (T p , T' p ) of the pressure build-up pulses controlling the rise in pressure in the wheel exhibiting a lower brake moment.
Inventors
- 👤 Gunther Buschmann
- 👤 Paul Schwarzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:55
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/176; B60T8/1764
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
A method for providing an anti-locking control system for the brakes of an automotive vehicle wherein braking pressure is applied to the rear vehicle wheels and modulated by slip control using the select-low technique, said method comprising the steps of: detecting the rotating pattern of each rear wheel; determining the brake moment of each rear wheel respectively from the detected rotating patterns; comparing the determined brake moments; detecting a difference between the brake moments; and altering the brake pressure modulation pattern of one of the rear wheels in response to the detecting difference until the brake moments are approximately equal.
Claim 2
Independent Claim
100 words
A method for providing an anti-locking control system for the brakes of an automotive vehicle wherein braking pressure is applied to the rear vehicle wheels and modulated by slip control using the select-low technique, said method comprising the steps of: detecting the rotating pattern of each rear wheel; determining the brake moment of each rear wheel respectively from the detected rotating patterns; comparing the determined brake moments; detecting a difference between the brake moments; and altering the brake pressure modulation pattern of one of the rear wheels in response to the detecting difference until the brake moments are approximately equal.
Claim 3
Dependent Claim
23 words
The method according to claim 1 including the step of delaying said altering step for a predetermined period after said difference is detected.
Claim 4
Dependent Claim
23 words
The method according to claim 1 wherein said altering step includes the step of delaying altering until a predetermined difference value is attained.
Claim 5
Dependent Claim
24 words
The method according to claim 1 wherein the brake pressure is applied to the rear vehicle wheels through control valves responsive to a controller.
Claim 6
Dependent Claim
21 words
The method according to claim 4 wherein said control valves are electromagnetic valves responsive to electrical signals provided by said controller.
Claim 7
Dependent Claim
18 words
The method according to claim 5 wherein during slip control said controller provides pulses of constant pulse duration.
Claim 8
Dependent Claim
31 words
The method according to claim 6 including the step of prolonging the duration of the pulses applied to one of said electromagnetic valves after said brake moment difference has been detected.
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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) | 1994-07-08 | 1995-01-07 | 1995-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-08 | 1999-01-07 | 1999-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-08 | 2003-01-07 | 2003-07-09 | $7700.00 | Window Closed / Lapsed |