US3794972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deceleration signaling apparatus having velocity and deceleration dependent signal
Assignee: Motors Liquidation Co
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Filing: 1973-01-12
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Granted: 1974-02-26
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Expires: 1993-01-12
Abstract
Abstract A deceleration signaling apparatus is provided for comparing actual vehicle deceleration with a reference deceleration and, when the actual vehicle deceleration exceeds the reference deceleration, integrates the net difference to generate a signal representing the difference between the actual vehicle velocity and a reference velocity determined by the reference deceleration. Means are provided for energizing signal lamps for providing deceleration warning while this velocity difference exceeds a predetermined constant. The comparator also functions to shift the magnitude of the reference deceleration from a first level to a second level less than the first level when the difference between the actual vehicle velocity and the reference velocity exceeds the predetermined constant so as to extend the duration of the deceleration warning.
Inventors
- 👤 Ostrom D Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:59
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/16; G01P15/165; B; B60; B60T; B60T8/00; B60T8/17; B60T8/176; B60T8/1761; B60T8/17613
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
208 words
An apparatus for providing an indication of the deceleration of a vehicle comprising: vehicle velocity sensing means for generating a velocity signal having a magnitude directly proportional to vehicle velocity; differentiating means coupled to the vehicle velocity sensing means and responsive to the velocity signal for generating a rate signal representing the rate of change of the vehicle velocity; means for generating a deceleration reference signal having a magnitude representing a predetermined deceleration warning level; means for summing the rate signal and the deceleration reference signal and generating a resultant signal; integrating means coupled to the last mentioned means and responsive to the resultant signal for generating a velocity difference signal having a magnitude representing the amount that the time integral of the predetermined deceleration warning level exceeds the vehicle velocity; comparator means coupled to the integrating means and responsive to the velocity difference signal for generating a signal control voltage when the magnitude of the velocity difference signal exceeds a predetermined threshold level; signal lamps; and means coupled to the comparator and responsive to the signal control voltage for energizing the signal lamps to provide an indication of the deceleration of the vehicle, whereby said indication is dependent upon the magnitude of deceleration and vehicle velocity change.
Claim 2
Independent Claim
208 words
An apparatus for providing an indication of the deceleration of a vehicle comprising: vehicle velocity sensing means for generating a velocity signal having a magnitude directly proportional to vehicle velocity; differentiating means coupled to the vehicle velocity sensing means and responsive to the velocity signal for generating a rate signal representing the rate of change of the vehicle velocity; means for generating a deceleration reference signal having a magnitude representing a predetermined deceleration warning level; means for summing the rate signal and the deceleration reference signal and generating a resultant signal; integrating means coupled to the last mentioned means and responsive to the resultant signal for generating a velocity difference signal having a magnitude representing the amount that the time integral of the predetermined deceleration warning level exceeds the vehicle velocity; comparator means coupled to the integrating means and responsive to the velocity difference signal for generating a signal control voltage when the magnitude of the velocity difference signal exceeds a predetermined threshold level; signal lamps; and means coupled to the comparator and responsive to the signal control voltage for energizing the signal lamps to provide an indication of the deceleration of the vehicle, whereby said indication is dependent upon the magnitude of deceleration and vehicle velocity change.
Claim 3
Independent Claim
260 words
An apparatus for providing an indication of the deceleration of a vehicle comprising: vehicle velocity sensing means for generating a voltage signal having a magnitude directly proportional to the vehicle velocity; differentiating means coupled to the vehicle velocity sensing means and responsive to the velocity signal for generating a rate signal representing the rate of change of vehicle velocity; means for generating a deceleration reference signal, said deceleration reference signal being normally at a first level representing a first predetermined deceleration level and being shiftable to a second level less than the first level, the second level representing a second predetermined deceleration level; means for summing the rate signal and the deceleration reference signal and generating resultant signal; integrating means coupled to the last mentioned means and responsive to the resultant signal for generating a velocity difference signal having a magnitude representing the amount that the time integral of the deceleration reference signal exceeds the vehicle velocity; comparator means coupled to the integrating means and responsive to the velocity difference signal for generating a control voltage when the magnitude of the velocity difference signal exceeds a predetermined threshold level; means coupled to the comparator means and responsive to the control voltage for shifting the reference deceleration signal from the first level to the second level; signal lamps; and means coupled to the comparator and responsive to the control voltage for fashing the signal lamps to provide an indication of vehicle deceleration, whereby the deceleration indication is a function of the magnitude of vehicle deceleration and the change in vehicle velocity.
Claim 4
Independent Claim
260 words
An apparatus for providing an indication of the deceleration of a vehicle comprising: vehicle velocity sensing means for generating a voltage signal having a magnitude directly proportional to the vehicle velocity; differentiating means coupled to the vehicle velocity sensing means and responsive to the velocity signal for generating a rate signal representing the rate of change of vehicle velocity; means for generating a deceleration reference signal, said deceleration reference signal being normally at a first level representing a first predetermined deceleration level and being shiftable to a second level less than the first level, the second level representing a second predetermined deceleration level; means for summing the rate signal and the deceleration reference signal and generating resultant signal; integrating means coupled to the last mentioned means and responsive to the resultant signal for generating a velocity difference signal having a magnitude representing the amount that the time integral of the deceleration reference signal exceeds the vehicle velocity; comparator means coupled to the integrating means and responsive to the velocity difference signal for generating a control voltage when the magnitude of the velocity difference signal exceeds a predetermined threshold level; means coupled to the comparator means and responsive to the control voltage for shifting the reference deceleration signal from the first level to the second level; signal lamps; and means coupled to the comparator and responsive to the control voltage for fashing the signal lamps to provide an indication of vehicle deceleration, whereby the deceleration indication is a function of the magnitude of vehicle deceleration and the change in vehicle velocity.
References Cited (Backward Citations)
US3731193A
Cited
US3746986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |