US3713705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antiskid braking method and apparatus
Assignee: Fiat SpA
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Filing: 1971-04-01
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Granted: 1973-01-30
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Expires: 1991-04-01
Abstract
Abstract A vehicle anti-skid braking system shortens the time required to reduce an excessive slip of the wheel by ascertaining the instant when the wheel acceleration becomes zero after braking pressure has been released and by keeping constant the braking torque on the wheel at the value it reaches after a predetermined time has elapsed from such instant, braking being resumed when the wheel speed has increased by a predetermined amount from the value it had at the instant when the deceleration of the wheel has become zero.
Inventors
- 👤 G Michellone
- 👤 M Palazzetti
- 👤 G Tabasso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:39
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/176; B60T8/1763; B60T8/17633
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
In a method of antiskid braking of a vehicle wheel, including the steps of initiating release of braking, allowing the deceleration of the wheel to decrease under friction with the road, ascertaining the instant when the deceleration of the wheel becomes zero, thereafter keeping the braking torque on the wheel constant for a limited interval at the value it reaches after a predetermined time is elapsed from the said instant, and finally initiating resumption of braking at the instant when the wheel speed has increased by a predetermined amount from the value it had at the instant when the deceleration of the wheel had become zero.
Claim 2
Dependent Claim
106 words
In a method of antiskid braking of a vehicle wheel, including the steps of initiating release of braking, allowing the deceleration of the wheel to decrease under friction with the road, ascertaining the instant when the deceleration of the wheel becomes zero, thereafter keeping the braking torque on the wheel constant for a limited interval at the value it reaches after a predetermined time is elapsed from the said instant, and finally initiating resumption of braking at the instant when the wheel speed has increased by a predetermined amount from the value it had at the instant when the deceleration of the wheel had become zero.
Claim 3
Dependent Claim
106 words
In a method of antiskid braking of a vehicle wheel, including the steps of initiating release of braking, allowing the deceleration of the wheel to decrease under friction with the road, ascertaining the instant when the deceleration of the wheel becomes zero, thereafter keeping the braking torque on the wheel constant for a limited interval at the value it reaches after a predetermined time is elapsed from the said instant, and finally initiating resumption of braking at the instant when the wheel speed has increased by a predetermined amount from the value it had at the instant when the deceleration of the wheel had become zero.
Claim 4
Dependent Claim
106 words
In a method of antiskid braking of a vehicle wheel, including the steps of initiating release of braking, allowing the deceleration of the wheel to decrease under friction with the road, ascertaining the instant when the deceleration of the wheel becomes zero, thereafter keeping the braking torque on the wheel constant for a limited interval at the value it reaches after a predetermined time is elapsed from the said instant, and finally initiating resumption of braking at the instant when the wheel speed has increased by a predetermined amount from the value it had at the instant when the deceleration of the wheel had become zero.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |