192 clutches and power-stop control – Clutch and brake – Vehicle type
Patent
1986-03-25
1987-08-18
Krizmanich, George H.
192 clutches and power-stop control
Clutch and brake
Vehicle type
192 0094, 192 3TR, 192 4A, B60K 4124, B60K 4128
Patent
active
046870806
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATION(S)
This U.S. application stems from PCT International Application No. PCT/KR85/00015 filed June 27, 1985.
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to the brake systems of vehicles.
2. Description of the Prior Art
There has been no device yet invented to keep a vehicle in a safely braked position through automatic linkage within a driving mechanism from the time when the vehicle is stopped until it is restarted (forward or backward) by a device between the brake pedal and clutch pedal. For example, a vehicle equipped with a clutch device will be totally out-of-braking position during the time the driver moves his right foot from the brake pedal to the accelerator pedal releasing simultaneously the clutch pedal.
Of course, a hand brake can keep the vehicle in a braked position at that moment, but a hand brake often does not work satisfactorily on a slope. The use of the hand brake at such time is less efficient and inconvenient. The absence of a reliable, safe device can cause incidents at present as follows:
(1) The vehicle can move backward or stop working on an upward slope, which may cause traffic accidents.
(2) In case a vehicle is hit by a following vehicle when it is about to restart after stopping on a level or a downward slope, it may rush forward and hit other vehicles or pedestrians because the driver removes his foot from the brake pedal while his left foot is not released from the clutch pedal and the vehicle is released from the brake system. This may cause a major traffic accident.
BRIEF SUMMARY OF THE INVENTION
The object of this invention, therefore, is to secure safe operation of vehicles, to make the vehicles easier to control and therefore make drivers feel free from mental stress and accidents.
This object is achieved by the invention which operates so that when a vehicle is brought to a stop by pressing the brake pedal, the brake pressure is automatically and simultaneously transmitted to the clutch system by pressing the clutch pedal. The braking pressure which has been transmitted to the clutch pedal is reduced slowly as the clutch pedal is released and the accelerator pedal is pushed down when the car is restarted. The car will then move forward without any risk of backward movement.
Since the clutch pedal immediately takes over the role of the brake pedal in the above described action, the vehicle will be kept in a completely braked situation even if the brake pedal is released, until the vehicle starts to move forward from a stopped situation.
Pushing down and releasing the clutch pedal for speed change while the vehicle is running does not act on the brake system.
Pushing down the brake pedal to reduce speed while the vehicle is moving does not act on the clutch system.
Only when the action of pushing down the brake pedal for speed reduction or for stopping is done together with the action of pushing down the clutch pedal, regardless of the order of or time interval between the two actions, pressure of the same amount as applied to the brakes by the brake pedal is automatically transmitted by the clutch pedal. Therefore, even if the driver releases the brake pedal before he releases the clutch pedal, the pressure of the same amount as applied by the brake pedal is still applied by the clutch pedal until release of the clutch pedal.
As described in detail hereinafter, this invention is intended to keep a vehicle from being out of the driver's control at any moment while it is being driven. This invention will give the following benefits both to the vehicle and to the driver:
Completely prevent an automobile from moving unintentionally backward at the moment the driver attempts to start on an upward slope; it also will allow the driver to proceed smoothly.
Especially under rainy, snowy or icy road conditions, this ability to prevent unintentional backward movement will greatly contribute to safe vehicle operation free from damage by accident.
The automatic system of this invention described above will
REFERENCES:
patent: 2325771 (1943-08-01), Hemphill
patent: 3322246 (1967-05-01), Noguchi
patent: 3705643 (1972-12-01), Iwaoka et al.
patent: 4540072 (1985-09-01), Suzuki et al.
patent: 4553651 (1985-11-01), Gaiser et al.
International Search Report PCT/KR 85/00015, dated 09/04/85 Austrian Patent Office.
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