US4345796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-skid brake control system for controlling the two pairs of diagonally opposed wheels of a motor vehicle
Assignee: Wabco Fahrzeugbremsen GmbH
•
Filing: 1980-08-01
•
Granted: 1982-08-24
•
Expires: 2000-08-01
Abstract
Abstract A wheel anti-skid brake control system for controlling the braking effort of the four wheels of a motor vehicle. The system includes a speed sensor, an electronic evaluating circuit, a monitoring safety circuit, a switching device and a solenoid regulated valve for each wheel for deactivating the braking effort of a pair of diagonally opposed wheels when a malfunction occurs in an associated electronic evaluating circuit.
Inventors
- 👤 Erich Reinecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:20
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/88; B60T8/885; Y; Y10; Y10S; Y10S303/00; Y10S303/09
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
An anti-skid brake control system for a motor vehicle having at least two pairs of diagonally opposed wheels comprising, (a) sensing means for producing output signals in accordance with the rotational behavior of each wheel of both pairs of diagonally opposed wheels, (b) evaluating means for each wheel of both pairs of diagonally opposed wheels for producing control signals in accordance with the output signals, (c) regulating means for each wheel of both pairs of diagonally opposed wheels for controlling the braking effort in accordance with the control signals, and (d) switching means for each wheel of both pairs of diagonally opposed wheels for monitoring the evaluating means and for deactivating the regulating means of either of the two pairs of diagonally opposed wheels when a circuit malfunction occurs in their respective evaluating means.
Claim 2
Dependent Claim
134 words
An anti-skid brake control system for a motor vehicle having at least two pairs of diagonally opposed wheels comprising, (a) sensing means for producing output signals in accordance with the rotational behavior of each wheel of both pairs of diagonally opposed wheels, (b) evaluating means for each wheel of both pairs of diagonally opposed wheels for producing control signals in accordance with the output signals, (c) regulating means for each wheel of both pairs of diagonally opposed wheels for controlling the braking effort in accordance with the control signals, and (d) switching means for each wheel of both pairs of diagonally opposed wheels for monitoring the evaluating means and for deactivating the regulating means of either of the two pairs of diagonally opposed wheels when a circuit malfunction occurs in their respective evaluating means.
Claim 3
Dependent Claim
49 words
The anti-skid brake control system as defined in claim 1, wherein said evaluating means of one of said pair of diagonally opposed wheels is included in one electronic unit and said evaluating means of the other of said pair of diagonally opposed wheels is included in other electronic unit.
Claim 4
Dependent Claim
34 words
The anti-skid brake control system as defined in claim 2, wherein each of said switching means includes a a safety circuit and a switch element for interconnecting said evaluating means to said regulating means.
Claim 5
Dependent Claim
50 words
The anti-skid brake control system as defined in claim 3, wherein said safety circuits of said one pair of diagonally opposed wheels is included in said another electronic unit and said safety circuits of said other of said pair of diagonally opposed wheels is included in said one electronic unit.
Claim 6
Dependent Claim
21 words
The anti-skid brake control system as defined in claim 4, wherein said evaluating means and said safety circuits are integrated circuits.
Claim 7
Dependent Claim
24 words
The anti-skid brake control system as defined in claim 3, wherein said switch element is an electromagnetic relay having at least one switching contact.
Claim 8
Dependent Claim
46 words
The anti-skid brake control system as defined in claim 3, wherein said safety circuits and said evaluating means are cross-coupled for said one pair of diagonally opposed wheels and said safety circuits and said evaluating means are cross-coupled for said another pair of diagonally opposed wheels.
Claim 9
Dependent Claim
63 words
The anti-skid brake control system as defined in claim 2, wherein a first fuse is interconnected between a source of voltage and said evaluating, switching, and regulating means of said one of said pair of diagonally opposed wheels and a second fuse is interconnected between the source of voltage and said evaluating, switching, and regulating means of said other of diagonally opposed wheels.
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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |