US3782784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage converter applying an antiskid logic element
Assignee: DBA SA
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Filing: 1972-04-19
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Granted: 1974-01-01
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Expires: 1992-04-19
Abstract
Abstract A voltage converter set designed to feed an antiskid logic element and to modify the wheel speed sensor signals. The converter set includes a proportional converter and an inversely proportional converter, connected through a diode, so that the output voltage of the converter set is higher for the low wheel speeds. The invention also provides the combination of several converter sets with a single antiskid logic element in a circuit of the exclusive ''''OR'''' or ''''SELECT LOW'''' type.
Inventors
- 👤 G Marouby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:06
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; B; B60; B60T; B60T8/00; B60T8/17; B60T8/172; B60T8/32; B60T8/58; B60T8/72
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
In a vehicle having a wheel and a brake controlling said wheel, an adaptive braking system for controlling said brake comprising: first means for generating a first signal directly proportioned to the rotational velocity of said wheel; second means for generating a second signal inversely proportional to the rotational velocity of said wheel; logic means having an output terminal, and an input terminal operatively connected to said first and second means for receiving said first and second signals, said logic means being responsive to the signal transmitted to the input terminal for sensing an incipient skidding condition of said wheel and generating a signal at said output terminal for relieving braking pressure in said brake; and means inhibiting said second signal when the value of said first signal is greater than the value of said second signal but permitting transmission of said second signal to said input terminal when the value of said second signal is greater than the value of said first sigNal.
Claim 2
Dependent Claim
164 words
In a vehicle having a wheel and a brake controlling said wheel, an adaptive braking system for controlling said brake comprising: first means for generating a first signal directly proportioned to the rotational velocity of said wheel; second means for generating a second signal inversely proportional to the rotational velocity of said wheel; logic means having an output terminal, and an input terminal operatively connected to said first and second means for receiving said first and second signals, said logic means being responsive to the signal transmitted to the input terminal for sensing an incipient skidding condition of said wheel and generating a signal at said output terminal for relieving braking pressure in said brake; and means inhibiting said second signal when the value of said first signal is greater than the value of said second signal but permitting transmission of said second signal to said input terminal when the value of said second signal is greater than the value of said first sigNal.
Claim 3
Dependent Claim
56 words
The invention of claim 1, wherein said first means generates a first signal having a value of zero at a relatively low wheel rotational velocity and said second means generates a second signal having a value of zero at substantially the same relatively low wheel rotational value that the first signal has a value of zero.
Claim 4
Dependent Claim
63 words
The invention of claim 2, wherein said second means increases the value of said second signal at a greater rate when the rotational velocity of said wheel decreases below said relatively low velocity than the rate at which said first means increases the value of said first signal as the rotational velocity is increased above said relatively low rotational velocity of said wheel.
Claim 5
Dependent Claim
71 words
The invention of claim 1, wherein said vehicle has a plurality of wheels with corresponding brakes controlling the wheels and corresponding first means, second means, and inhibiting means for each of said wheels, the output of each of said inhibiting means having a common connection with the output of a corresponding first means, each of said common connections being connected to the input terminal of said logic means through a diode.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |