US3887240A
Expired / Lapsed
US
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Antilock control system for vehicles
Assignee: Robert Bosch GmbH
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Filing: 1973-12-06
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Granted: 1975-06-03
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Expires: 1993-12-06
Abstract
Abstract An antilock control system for vehicles comprises at least two rotary behavior sensors associated with different wheels or wheel groups, an evaluation channel for evaluating signals from the sensors, switching apparatus for connecting the sensors to the evaluation channel in sequence and for connecting the output to the associated brake control channels, and storage apparatus in the control channels for storing signals from the evaluation channel for use when the evaluation channel is disconnected from the particular control channel.
Inventors
- 👤 Heinz Leiber
- 👤 Jurgen Gerstenmeier
- 👤 Wolfgang Korasiak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:03
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/176; B60T8/1761; B60T8/17613
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
148 words
An antilock control system for the braking system of a wheeled vehicle comprising at least two sensors, each associated with a different wheel or group of wheels of the vehicle and providing signals related to the rotary behavior of the wheels, an evaluation channel for evaluating signals fed to it from said sensors, first switching means for connecting said sensors to said evaluation channel in succession in a rhythm independent of the control channels for controlling brake pressure at the wheels associated with said sensors, second switching means acting in synchronism with said first switching means for switching the output of said evaluation channel in succession to said control channels, and storage means connected into said control channels for storing signals from said evaluation channel for use in the associated control channel when said associated control channel is disconnected by said second switching means from said evaluation channel.
Claim 2
Dependent Claim
148 words
An antilock control system for the braking system of a wheeled vehicle comprising at least two sensors, each associated with a different wheel or group of wheels of the vehicle and providing signals related to the rotary behavior of the wheels, an evaluation channel for evaluating signals fed to it from said sensors, first switching means for connecting said sensors to said evaluation channel in succession in a rhythm independent of the control channels for controlling brake pressure at the wheels associated with said sensors, second switching means acting in synchronism with said first switching means for switching the output of said evaluation channel in succession to said control channels, and storage means connected into said control channels for storing signals from said evaluation channel for use in the associated control channel when said associated control channel is disconnected by said second switching means from said evaluation channel.
Claim 3
Dependent Claim
148 words
An antilock control system for the braking system of a wheeled vehicle comprising at least two sensors, each associated with a different wheel or group of wheels of the vehicle and providing signals related to the rotary behavior of the wheels, an evaluation channel for evaluating signals fed to it from said sensors, first switching means for connecting said sensors to said evaluation channel in succession in a rhythm independent of the control channels for controlling brake pressure at the wheels associated with said sensors, second switching means acting in synchronism with said first switching means for switching the output of said evaluation channel in succession to said control channels, and storage means connected into said control channels for storing signals from said evaluation channel for use in the associated control channel when said associated control channel is disconnected by said second switching means from said evaluation channel.
Claim 4
Dependent Claim
148 words
An antilock control system for the braking system of a wheeled vehicle comprising at least two sensors, each associated with a different wheel or group of wheels of the vehicle and providing signals related to the rotary behavior of the wheels, an evaluation channel for evaluating signals fed to it from said sensors, first switching means for connecting said sensors to said evaluation channel in succession in a rhythm independent of the control channels for controlling brake pressure at the wheels associated with said sensors, second switching means acting in synchronism with said first switching means for switching the output of said evaluation channel in succession to said control channels, and storage means connected into said control channels for storing signals from said evaluation channel for use in the associated control channel when said associated control channel is disconnected by said second switching means from said evaluation channel.
Claim 5
Dependent Claim
38 words
A system as defined in claim 1, and further comprising a clock pulse generator for controlling said first and second switching means to feed said signals of said sensors to said evaluation channel in a predetermined timing sequence.
Claim 6
Dependent Claim
32 words
A system as defined in claim 2, and further comprising intermediate storage devices for storing said signals of said sensors and means connecting said intermediate storage devices to said first switching means.
Claim 7
Dependent Claim
20 words
A system as defined in claim 2, and comprising means for connecting said sensors directly to said first switching means.
Claim 8
Dependent Claim
48 words
A system as defined in claim 1, wherein said first switching means comprises a timed switching means for connecting said sensor signals to said evaluation channel for a time period dependent on the reciprocal of the frequency of the pulses of the one of said sensors being connected.
Claim 9
Dependent Claim
28 words
A system as defined in claim 5, wherein said timed switching means comprises switching means whose timing period is the said reciprocal of said frequency of said pulses.
Claim 10
Dependent Claim
95 words
A system as defined in claim 5, wherein said timed switching means comprises an input circuit, a determination circuit for determining the time period duration of the pulses of said sensors and a control connection between said input circuit and said determination circuit for connecting the next following sensor at the end of a time period duration and means connecting said circuits to said evaluation channel for providing signals to said evaluation channel corresponding in length to a time period dependent on said time period duration initiated by leading and trailing edges of said pulses.
Claim 11
Dependent Claim
52 words
A system as defined in claim 7, wherein said determination circuit comprises a first branch responding only to pulse leading and tRailing edges moving negatively, a second branch responding only to pulse leading and trailing edges moving positively and means for blocking one said branch when said other said branch is responding.
Claim 12
Dependent Claim
39 words
A system as defined in claim 7, wherein said determination circuit comprises a first bistable element responsive to negatively moving leading and trailing pulse edges and a second bistable element responsive to positively moving leading and trailing pulse edges.
Claim 13
Dependent Claim
25 words
A system as defined in claim 9, wherein said determination circuit further comprises a negator element connected in front of one of said bistable elements.
Claim 14
Dependent Claim
36 words
A system as defined in claim 7, and comprising a time element responsive to trailing edges of said pulses and producing a short control signal for connection of said next following sensor to the evaluation channel.
Claim 15
Dependent Claim
22 words
A system as defined in claim 11, and comprising means for blocking said determination circuit for the duration of said control signal.
Claim 16
Dependent Claim
28 words
A system as defined in claim 7 and comprising means for determining a minimum wheel speed and producing a signal for immediate connection of said next following sensor.
Claim 17
Dependent Claim
34 words
A system as defined in claim 1, and comprising time control means for varying the time period in which a control of brake pressure to said wheel brakes is effected by said storage means.
Claim 18
Dependent Claim
26 words
A system as defined in claim 14 and comprising brake pressure dependent means for reducing said time period with increasing brake pressure of the associated wheel.
Claim 19
Dependent Claim
24 words
A system as defined in claim 14, and comprising temperature dependent means for reducing said time period with increasing temperature of the brake medium.
Claim 20
Dependent Claim
28 words
A system as defined in claim 1, and comprising operative means for rendering said storage means operative with a predetermined deceleration of said wheels to reduce brake pressure.
Claim 21
Dependent Claim
33 words
A system as defined in claim 17 wherein said operative means comprises means for rendering said storage means operative if a predetermined deceleration is present towards the end of a clock pulse signal.
Claim 22
Dependent Claim
46 words
A system as defined in claim 17, and comprising deceleration dependent means for effecting an extension of said time period in which a control of brake pressure to said wheel brakes is effected by said storage means with an increase in the level of said deceleration.
Claim 23
Dependent Claim
34 words
A system as defined in claim 1 and comprising operative means for rendering said storage means operative to effect a brake pressure reduction with the presence of a predetermined wheel slip of said wheels.
Claim 24
Dependent Claim
28 words
A system as defined in claim 20, and comprising wheel slip dependent means for effecting an extension of said time period with an increase in said wheel slip.
Claim 25
Dependent Claim
26 words
A system as defined in claim 21, and comprising brake pressure dependent means for reducing said time period with increasing brake pressure of the associated wheel.
Claim 26
Dependent Claim
24 words
A system as defined in claim 22, and comprising temperature dependent means for reducing said time period with increasing temperature of the brake medium.
Claim 27
Dependent Claim
36 words
A system as defined in claim 1, and comprising operative means for rendering said storage means operative to effect an increase in the braking pressure with the presence of a predetermined wheel acceleration of said wheels.
Claim 28
Dependent Claim
33 words
A system as defined in claim 24, wherein said operative means comprises means for rendering said storage means operative if a predetermined acceleration is present towards the end of a clock pulse signal.
Claim 29
Dependent Claim
30 words
A system as defined in claim 24, and comprising acceleration dependent means for effecting an extension of the time period in which said storage means is operative with increasing acceleration.
Claim 30
Dependent Claim
27 words
A system as defined in claim 24, and comprising brake pressure dependent means for increasing the operative time period of said storage means with increasing brake pressure.
Claim 31
Dependent Claim
31 words
A system as defined in claim 27, and comprising temperature dependent means for decreasing said operative time perioD of said storage means with an increase in temperature of the brake medium.
Claim 32
Dependent Claim
91 words
A system as defined in claim 1, and comprising a pressure sensor for producing a signal corresponding to the instantaneous controlled brake pressure, means for determining a desired pressure value from said signal of said pressure sensor and causing storage of said desired value in said storage means and comparator means for comparing said signal corresponding to said instantaneous pressure and a signal corresponding to said desired value and for producing a signal for variation of the brake pressure to bring the value of said instantaneous pressure towards said desired value.
Claim 33
Dependent Claim
26 words
A system as defined in claim 29, wherein said means for determining comprises means for causing said storage towards the end of a clock pulse signal.
Claim 34
Dependent Claim
29 words
A system as defined in claim 29 and comprising a setting and adjustment element for determining said desired value from signals dependent on the rotary behavior of said wheels.
Claim 35
Dependent Claim
27 words
A system as defined in claim 29, and comprising means for reducing the ratio of said desired pressure value to said instantaneous value with increasing wheel slip.
Claim 36
Dependent Claim
27 words
A system as defined in claim 29, and comprising means for reducing the ratio of said desired pressure value to said instantaneous value with increasing wheel deceleration.
Claim 37
Dependent Claim
32 words
A system as defined in claim 29, and comprising means for reducing the ratio of said desired pressure value to said instantaneous value with increasing a wheel slip and increasing wheel deceleration.
Claim 38
Dependent Claim
45 words
A system as defined in claim 1 and comprising a clock pulse generator for controlling operation of said first and second switching means and varying means for varying the pulse period of said clock pulse generator in dependence on predetermined rotary behavior of said wheels.
Claim 39
Dependent Claim
25 words
A system as defined in claim 35, wherein said varying means comprises means for shortening said pulse period in accordance with a predetermined wheel acceleration.
Claim 40
Dependent Claim
25 words
A system as defined in claim 35, wherein said varying means comprise means for extending said pulse period in accordance with a predetermined wheel slip.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |