US3883183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for the control of the brake slippage and for the prevention of the locking of wheels of vehicles, especially motor vehicles
Assignee: Daimler Benz AG
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Filing: 1972-04-21
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Granted: 1975-05-13
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Expires: 1992-04-21
Abstract
Abstract An installation for controlling the brake slippage in vehicle wheels, especially in motor vehicles, in which pulse transmitters are associated with the wheels whose pulses are processed by control circuits connected to the output of the transmitters into signals which act on control devices in the pressure medium circuits of the wheel brakes in such a manner that the pressure at the wheel brakes is selectively built up, held or decreased; apparatus is provided for the control of the recommencement of the pressure build-up which includes a time limit device and apparatus are also provided for influencing the pressure build-up which includes a timing generator producing an output pulse substantially immediately upon application of an input signal.
Inventors
- 👤 Manfred H Burckhardt
- 👤 Hellmut Krohn
- 👤 Horst Grossner
- 👤 Hans-Jorg Florus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:38
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/176; B60T8/1761; B60T8/17613
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
174 words
An installation for the control of the brake slippage of vehicle wheels, especially motor vehicle wheels, in which pulse transmitter means are coordinated to the wheels whose pulses are processed into signals in a circuit system connected to the output of the pulse transmitter means and in which the thus obtained signals act on control means in pressure medium circuit means of the wheel brakes in such a manner that the pressure at the wheel brakes is being built up, held or decreased, and which includes means for controlling the recommencement of the pressure build-up and means for influencing the pressure build up, characterized in that the means for controlling the recommencement of the pressure build-up includes time-limit means responsive to the attainment of a deceleration threshold value for enabling the recommencement of the pressure build-up within a predetermined period after the attainment of said deceleration threshold value unless an acceleration threshold value is attained within the predetermined period and in that the means for influencing the pressure build-up includes a timing generator means.
Claim 2
Dependent Claim
174 words
An installation for the control of the brake slippage of vehicle wheels, especially motor vehicle wheels, in which pulse transmitter means are coordinated to the wheels whose pulses are processed into signals in a circuit system connected to the output of the pulse transmitter means and in which the thus obtained signals act on control means in pressure medium circuit means of the wheel brakes in such a manner that the pressure at the wheel brakes is being built up, held or decreased, and which includes means for controlling the recommencement of the pressure build-up and means for influencing the pressure build up, characterized in that the means for controlling the recommencement of the pressure build-up includes time-limit means responsive to the attainment of a deceleration threshold value for enabling the recommencement of the pressure build-up within a predetermined period after the attainment of said deceleration threshold value unless an acceleration threshold value is attained within the predetermined period and in that the means for influencing the pressure build-up includes a timing generator means.
Claim 3
Dependent Claim
34 words
An installation according to claim 1 in which the timing generator means includes means operable upon application of a signal to its input to commence substantially immediately with a pulse rise in its output.
Claim 4
Dependent Claim
58 words
An installation according to claim 2, further comprising timing means operatively connected with the control means in such a manner that the recommencement of the wheel deceleration after an acceleration operation when the wheel acceleration does not exceed a first acceleration threshold value within the predetermined time period of the time-limit means is triggered by said time-limit means.
Claim 5
Dependent Claim
95 words
An installation according to claim 3, wherein said timing means includes storage means operable to be set by said deceleration threshold value which is a second deceleration threshold value, said storage means being operable to keep an inlet valve of the pressure medium circuit means of the corresponding wheel closed, said storage means being operable to be reset by the first acceleration threshold value or, in case said first acceleration threshold value is not reached after a predetermined time, being reset by said time-limit means which is also set by said second deceleration threshold value.
Claim 6
Dependent Claim
72 words
An installation according to claim 4, characterized in that the timing generator means includes an operational amplifier including circuit means for achieving a predetermined keying ratio between output and positive input on the one hand, and output and negative input on the other, said last-mentioned circuit means being operable to cause the operational amplifier to commence with the production of an output pulse substantially instantaneously with the application of an input signal.
Claim 7
Dependent Claim
61 words
An installation according to claim 5, wherein the circuit means of the operational amplifier includes a charging condenser and a charging circuit consisting of a series circuit having a series resistor and a parallel circuit consisting of a resistor and a diode series-connected with the first-mentioned resistor, the input being connected with said charging circuit by way of a rectifier means.
Claim 8
Dependent Claim
58 words
An installation according to claim 1, further comprising timing means operatively connected with the control means in such a manner that the recommencement of the wheel deceleration after an acceleration operation when the wheel acceleration does not exceed a first acceleration threshold value within the predetermined time period of the time-limit means is triggered by said time-limit means.
Claim 9
Dependent Claim
94 words
An installation according to claim 7, wherein said timing means includes storage means operable to be set by said deceleration threshold value which is a second deceleration threshold value, said storage means being operable to keep an inlet valve of the pressure medium circuit means of the corresponding wheel closed, said storage means being operable to be reset by the first acceleration threshold or, in case said first acceleration threshold value is not reached after a predetermined time, being reset by said time-limit means which is also set by said second deceleration threshold value.
Claim 10
Dependent Claim
72 words
An installation according to claim 1, characterized in that the timing generator means includes an operational amplifier including circuit means for achieving a predetermined keying ratio between output and positive input on the one hand, and output and negative input on the other, said last-mentioned circuit means being operable to cause the operational amplifier to commence with the production of an output pulse substantially instantaneously with the application of an input signal.
Claim 11
Dependent Claim
61 words
An installation according to claim 9, wherein the circuit means of the operational amplifier includes a charging condenser and a charging circuit consisting of a series circuit having a series resistor and a parallel circuit consisting of a resistor and a diode series-connected with the first-mentioned resistor, the input being connected with said charging circuit by way of a rectifier means.
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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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |