Electro pneumatic brake system for railway car
AssigneeBi-Modal Corporation
InventorChristopher A. Cripe
Life of this patent
Estimating the term…
Abstract
An electro pneumatic system is provided for simultaneously braking a plurality of railway cars in a train. A relay valve in each car is connected between the source of air braking pressure and the brake cylinders and is responsive to the amount of air pressure within an independent air reservoir in each of the cars to apply or release the brakes. Electrical means are selectively operated to control the amount of air pressure in each independent air reservoir.
Claims33
In combination with a railway car having air cylinder operated brakes to retard the movement of the car,
- a. a source of air pressure;
- b. regulator means connected to said source of air pressure to produce a regulated constant output air pressure therefrom;
- c. a reservoir for receiving air pressure from said regulator means;
- d. electrical means connected between said regulator means and said reservoir for selectively controlling the time durations that air pressure is applied from said regulator means to said air reservoir to thereby control the amount of air pressure in said reservoir;
- e. pressure responsive valve means connected between said source of air pressure and said brake cylinder to supply a variable pressure to said brake cylinder in accordance with the amount of air pressure applied to said valve means;
- and
- f. means for connecting the air pressure from said reservoir to said pressure responsive valve means to thereby control the air pressure from said source to said brake cylinder in accordance with the amount of air pressure in said reservoir.
In combination with a plurality of railway cars each having brake cylinder means therein to retard the movements of said cars,
- a. a main source of air pressure;
- b. a storage reservoir in each of said cars for receiving air pressure therefrom;
- c. regulator means in each car receiving air pressure from said storage reservoir to produce a regulated constant pressure therefrom;
- d. a rate reservoir in each car for receiving air pressure from said regulator means;
- e. electrical means connected between said regulator means and said rate reservoir for selectively controlling the time durations that air pressure is applied from each of said regulator means to said rate reservoirs to simultaneously control the amount of air pressure in the rate reservoir in all of said plurality of cars;
- f. pressure responsive valve means in each car connected between said storage reservoir and said brake cylinder means to supply a variable pressure to said brake cylinder means in accordance with the amount of air pressure applied thereto;
- and
- g. means in each car connecting the air pressure from said rate reservoir to said pressure responsive valve means to control the braking pressure applied from said storage reservoir to said brake cylinder means.
Dependencies are inferred from the claim text.