Patent US3791702A successfully refreshed from Google Patents.
US3791702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake-force control system for vehicles, especially motor vehicles
Assignee: Daimler Benz AG
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Filing: 1971-08-04
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Granted: 1974-02-12
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Expires: 1991-08-04
Abstract
Abstract A brake force control system for vehicles, especially for motor vehicles in which the brake medium pressure acting on the brakes is controlled as a function of the rotary condition of the wheel by magnetically controlled inlet and outlet valves in the manner of a three point control; during each control of an inlet valve a signal causing a short defined opening of the outlet valve is simultaneously fed to the associated outlet valve by way of a coupling apparatus, preferably consisting of a circuit including a resistor and reactive impedance whose values may be varied as a function of certain characteristics of the brake force control system.
Inventors
- 👤 H Grossner
- 👤 H Florus
- 👤 M Burckhardt
- 👤 H Krohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:42
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/58; B60T8/17; B60T8/176; B60T8/1761; B60T8/17613
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
95 words
A brake force control system for vehicles with a brake medium for the brakes thereof, especially motor vehicles, in which a brake medium pressure acting on a brake is controlled by signals in dependence on the rotary condition of a wheel by magnetically controlled inlet and outlet valve means, characterized by opening means for causing a defined opening of short duration of the outlet valve means, the opening means including coupling means for supplying during each control of an inlet valve means a signal to the associated outlet valve means to cause the defined opening.
Claim 2
Dependent Claim
95 words
A brake force control system for vehicles with a brake medium for the brakes thereof, especially motor vehicles, in which a brake medium pressure acting on a brake is controlled by signals in dependence on the rotary condition of a wheel by magnetically controlled inlet and outlet valve means, characterized by opening means for causing a defined opening of short duration of the outlet valve means, the opening means including coupling means for supplying during each control of an inlet valve means a signal to the associated outlet valve means to cause the defined opening.
Claim 3
Dependent Claim
40 words
A brake force control system according to claim 1, characterized in that the coupling means determining the duration of the signal for the outlet valve means is adjustable by at least one characteristic magnitude of the brake force control system.
Claim 4
Dependent Claim
30 words
A brake force control system according to claim 2, characterized in that the coupling means is adjustable as a function of several characteristic magnitudes of the brake force control system.
Claim 5
Dependent Claim
22 words
A brake force control system according to claim 3, characterized in that one of said several characteristic magnitudes is the vehicle velocity.
Claim 6
Dependent Claim
44 words
A brake force control system according to claim 2, characterized in that the coupling means is operable in such a manner that with a greater rotary deceleration of the respective wheel the duration of the signal is larger than with a smaller rotary deceleration.
Claim 7
Dependent Claim
36 words
A brake force control system according to claim 2, characterized in that the coupling means is opeRable to increase the duration of the signal fed to the associated outlet valve means with an increasing vehicle velocity.
Claim 8
Dependent Claim
44 words
A brake force control system according to claim 6, characterized in that the coupling means is operable in such a manner that with a greater rotary deceleration of the respective wheel the duration of the signal is larger than with a smaller rotary deceleration.
Claim 9
Dependent Claim
32 words
A brake force control system according to claim 7, characterized in that the coupling means is operable in such a manner that the duration of the signal changes with changes in temperature.
Claim 10
Dependent Claim
16 words
A brake force control system according to claim 8, wherein the temperature is the ambient temperature.
Claim 11
Dependent Claim
21 words
A brake force control system according to claim 9, characterized in that said temperature is the temperature of the brake medium.
Claim 12
Dependent Claim
21 words
A brake force control system according to claim 10, characterized in that the temperature is the temperature of the brake disc.
Claim 13
Dependent Claim
31 words
A brake force control system according to claim 11, characterized in that a line controlling the inlet valve means is connected with the coupling means including capacitor means and resistor means.
Claim 14
Dependent Claim
30 words
A brake force control system accordint to claim 12, characterized in that at least one of said capacitor and resistor means is adjustable to control the duration of said signal.
Claim 15
Dependent Claim
32 words
A brake force control system according to claim 2, characterized in that the coupling means is operable in such a manner that the duration of the signal changes with changes in temperature.
Claim 16
Dependent Claim
16 words
A brake force control system according to claim 14, wherein the temperature is the ambient temperature.
Claim 17
Dependent Claim
21 words
A brake force control system according to claim 14, characterized in that said temperature is the temperature of the brake medium.
Claim 18
Dependent Claim
21 words
A brake force control system according to claim 14, characterized in that the temperature is the temperature of the brake disc.
Claim 19
Dependent Claim
31 words
A brake force control system according to claim 1, characterized in that a line controlling the inlet valve means is connected with the coupling means including capacitor means and resistor means.
Claim 20
Dependent Claim
34 words
A brake force control system according to claim 18, characterized in that the coupling means includes line sections interconnecting the line controlling the inlet valve means with a line controlling the outlet valve means.
Claim 21
Dependent Claim
30 words
A brake force control system according to claim 18, characterized in that at least one of said capacitor and resistor means is adjustable to control the duration of said signal.
Claim 22
Dependent Claim
49 words
A brake force control system according to claim 1, characterized in that said coupling means is responsive to a signal for closing the inlet valve means for simultaneously supplying the associated outlet valve means with a short duration signal for opening the outlet valve means for a defined period.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |