Patent US3905441A successfully refreshed from Google Patents.
US3905441A
Expired / Lapsed
US
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Method and apparatus for controlling the brakes of vehicles
Assignee: Aisin Corp
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Filing: 1973-06-19
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Granted: 1975-09-16
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Expires: 1993-06-19
Abstract
Abstract A method and apparatus for controlling a brake for vehicles having a fluid pressure source, a hydraulic brake system and an accelerator comprises a sensor for detecting the distance between two vehicles, for example, trailing and leading vehicles, a brake control signal generator for generating a brake control signal which will actuate an actuator operative upon the accelerator, a switch being actuated by the accelerator, a control valve connecting the fluid pressure source with the hydraulic brake system and controlling the fluid pressure to the hydraulic brake system in accordance with the brake control signal through the switch, and a change-over valve being disposed between the actuator and the fluid pressure source and connecting the fluid pressure source with the actuator in accordance with the brake control signal, the brake control signal being capable of being terminated by continuously depressing the accelerator against the actuation of the actuator.
Inventors
- 👤 Shoji Kawata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:02
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/103; B60K; B60K31/00; B60K31/0008; B60K31/06; B60K31/08; B60W; B60W2540/00; B60W2540/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
280 words
Brake control apparatus for vehicles having a fluid pressure source for providing a substantially constant fluid pressure, hydraulic brake means for arresting the movement of said vehicles, and accelerator means movable in a given direction from a predetermined position for accelerating said vehicles, comprising: a sensor for detecting the distance between two vehicles; a brake control signal generator for generating a brake control signal as a result of an input from said sensor; switch means capable of being actuated by said accelerator means upon movement thereof in a direction opposite to said given direction to a predetermined unloaded position; a control valve means connecting said fluid pressure source with said hydraulic brake means and controlling the fluid pressure to said hydraulic brake means in accordance with said brake control signal being provided through said switch means only upon actuation of said switch means; actuator means for transmitting a signal force generated by said brake control signal to said accelerator means for urging said accelerator means to move in said opposite direction toward said unloaded position; and changeover valve means being disposed between said actuator means and said fluid pressure source and connecting said fluid pressure source with said actuator means for causing said actuator means to transmit said signal force to said accelerator means in accordance with said brake control signal from said brake control signal generator for so long as said brake control signal generator receives an input from said sensor, wherein the operation of said hydraulic brake means through said brake control signal is capable of being terminated by the continuous depression of said accelerator means in said given direction against the signal force of said actuator means.
Claim 2
Dependent Claim
280 words
Brake control apparatus for vehicles having a fluid pressure source for providing a substantially constant fluid pressure, hydraulic brake means for arresting the movement of said vehicles, and accelerator means movable in a given direction from a predetermined position for accelerating said vehicles, comprising: a sensor for detecting the distance between two vehicles; a brake control signal generator for generating a brake control signal as a result of an input from said sensor; switch means capable of being actuated by said accelerator means upon movement thereof in a direction opposite to said given direction to a predetermined unloaded position; a control valve means connecting said fluid pressure source with said hydraulic brake means and controlling the fluid pressure to said hydraulic brake means in accordance with said brake control signal being provided through said switch means only upon actuation of said switch means; actuator means for transmitting a signal force generated by said brake control signal to said accelerator means for urging said accelerator means to move in said opposite direction toward said unloaded position; and changeover valve means being disposed between said actuator means and said fluid pressure source and connecting said fluid pressure source with said actuator means for causing said actuator means to transmit said signal force to said accelerator means in accordance with said brake control signal from said brake control signal generator for so long as said brake control signal generator receives an input from said sensor, wherein the operation of said hydraulic brake means through said brake control signal is capable of being terminated by the continuous depression of said accelerator means in said given direction against the signal force of said actuator means.
Claim 3
Dependent Claim
43 words
Brake control apparatus for vehicles as set forth in claim 1 which further comprises: relief valve means associated with said changeover valve means and said fluid pressure source for regulating the fluid pressure to said changeover valve means and said control valve means.
Claim 4
Dependent Claim
72 words
Brake control apparatus for vehicles as set forth in claim 2 wherein said switch means comprises: a movable member capable of being actuated by said accelerator means in response to the actuation of said accelerator means by said actuator means; and contact members capable of being contacted by said movable member, whereby said brake control signal may be transmitted to said control valve means when said movable member contacts said contact members.
Claim 5
Dependent Claim
150 words
A brake control method for vehicles having a fluid pressure source for providng a substantially constant fluid pressure, hydraulic brake means for arresting the movement of said vehicles, and accelerator means for accelerating said vehicles, comprising the steps of; sensing the distance between two vehicles; generating a brake control signal as a result of the distance sensed; actuating an actuator for moving said accelerator means in a given direction opposite to that wherein the vehicle acceleration is provided and to an unloaded position in response to said generated signal; automatically actuating said hydraulic brake means in response to said actuation of said actuator; and terminating said actuation of said hydraulic brake means when said actuator is negatively actuated by depressing said accelerator means in a direction opposite to that to which said actuator tends to move said accelerator means while continously actuating said actuator in response to said generated signal.
Claim 6
Dependent Claim
150 words
A brake control method for vehicles having a fluid pressure source for providng a substantially constant fluid pressure, hydraulic brake means for arresting the movement of said vehicles, and accelerator means for accelerating said vehicles, comprising the steps of; sensing the distance between two vehicles; generating a brake control signal as a result of the distance sensed; actuating an actuator for moving said accelerator means in a given direction opposite to that wherein the vehicle acceleration is provided and to an unloaded position in response to said generated signal; automatically actuating said hydraulic brake means in response to said actuation of said actuator; and terminating said actuation of said hydraulic brake means when said actuator is negatively actuated by depressing said accelerator means in a direction opposite to that to which said actuator tends to move said accelerator means while continously actuating said actuator in response to said generated signal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |