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US3760191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ramp generator for producing ramp current during controlled rate discharge of stored capacitance
Assignee: Individual
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Filing: 1971-08-24
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Granted: 1973-09-18
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Expires: 1991-08-24
Abstract
Abstract A vehicle skid control braking system of the type that includes means for generating a signal varying in accordance with braking conditions, such as vehicle speed, wheel speed and road surface conditions. The system includes a ramp generator responsive to the varying signal means for storing a charge proportional to the varying signal, control means having an output signal varying between first and second values, and discharge means for discharging the storage means at a controlled rate to a level determined by the varying of the control means output signal from the first value to the second value.
Inventors
- 👤 J Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:52
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/172; H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
162 words
A ramp generator having an input connectable to means for generating a signal varying in accordance with an independent variable comprising: storage means for storing a charge proportional to a magnitude of the signal varying in accordance with the independent variable, said storage meaNs including a diode and a capacitor, said diode having one terminal connected to said input and having another terminal connected to one terminal of said capacitor; charge control means connected to said storage means for discharging said storage means at a controlled rate in response to a control signal, said charge control means including a transistor in a discharge path-defining circuit connected to a junction point common to and connected between said diode and said capacitor; and circuit means connected to said storage means for generating a ramp current proportional to the independently variable signal, said circuit means including a transistor having a base electrode connected to said capacitor and a collector electrode connected to an output terminal.
Claim 2
Dependent Claim
162 words
A ramp generator having an input connectable to means for generating a signal varying in accordance with an independent variable comprising: storage means for storing a charge proportional to a magnitude of the signal varying in accordance with the independent variable, said storage meaNs including a diode and a capacitor, said diode having one terminal connected to said input and having another terminal connected to one terminal of said capacitor; charge control means connected to said storage means for discharging said storage means at a controlled rate in response to a control signal, said charge control means including a transistor in a discharge path-defining circuit connected to a junction point common to and connected between said diode and said capacitor; and circuit means connected to said storage means for generating a ramp current proportional to the independently variable signal, said circuit means including a transistor having a base electrode connected to said capacitor and a collector electrode connected to an output terminal.
Claim 3
Dependent Claim
83 words
A ramp generator as set forth in claim 1, wherein said charge control means includes a voltage clamping circuit connected to the common junction point between said diode and said capacitor for establishing the controlled rate of discharge of said storage means, and said transistor of said charge control means having a base electrode connected to receive a control signal variable between a first and a second value respectively rendering said transistor conductive and non-conductive for completing or breaking the discharge path-defining circuit.
Claim 4
Dependent Claim
78 words
A ramp generator as set forth in claim 2, wherein said voltage clamping circuit includes at least one diode, a resistor, said at least one diode and said resistor being connected in series with the common junction point between said diode and said capacitor of said storage means, and said transistor of said charge control means having a collector electrode connected to a junction point common to and connected between said at least one diode and said resistor.
Claim 5
Dependent Claim
39 words
A ramp generator as set forth in claim 3, wherein said circuit means further includes a second transistor having its base-emitter junction connected in a series circuit with the said at least one diode of said voltage clamping circuit.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |