Brakes – Operators – Fluid pressure
Patent
1997-01-13
1999-02-02
Graham, Matthew C.
Brakes
Operators
Fluid pressure
188 3H, 303 961, B60T 702
Patent
active
058652795
ABSTRACT:
A hydraulic brake apparatus is disclosed for braking a vehicle. The apparatus includes a reservoir for the reception therein of hydraulic fluid and a master cylinder hydraulically connected to the reservoir. A pedal actuator is pivotally secured to the vehicle and operably connected to the master cylinder. The arrangement is such that when the pedal actuator is pivoted from a retracted first location to a depressed second location thereof, hydraulic fluid is drawn by the master cylinder from the reservoir towards the master cylinder. A slave cylinder is hydraulically connected to the master cylinder such that when the pedal actuator moves from the retracted first location to the depressed second location, hydraulic fluid is pumped from the master cylinder towards the slave cylinder for actuation thereof. A further pedal actuator is pivotally secured to the vehicle and operably connected to the slave cylinder, the arrangement being such that upon the actuation of the slave cylinder, the further pedal actuator is pivoted from a released first location to an applied second location thereof. A further master cylinder is hydraulically connected to the reservoir and operably connected to the further pedal actuator. A brake system is hydraulically connected to the further master cylinder such that when the further pedal actuator is pivoted towards the applied second location, the further master cylinder pumps hydraulic fluid from the further master cylinder towards the brake system so that the brake system is applied for braking the vehicle. The arrangement is such that braking of the vehicle is accomplished by movement of at least one of the pedals towards the respective second location.
REFERENCES:
patent: 3834769 (1974-09-01), Just
patent: 4505519 (1985-03-01), Muterel
patent: 4598954 (1986-07-01), Hayashi
patent: 5031729 (1991-07-01), Wittkop et al.
Archer David J.
Graham Matthew C.
Monroe Truck Equipment Inc.
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