DESC:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
AND
The Patents Rules, 2003

COMPLETE SPECIFICATION
(Section 10 and Rule 13)

TITLE
A Braking System

APPLICANT
(a) BEML LTD.
(b) An Indian Company,
(c) BEML Soudha,
No 23/1, IV Main, Sampangiramanagar,
Bengaluru, Karnataka, India

PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed.
FIELD OF THE INVENTION
This invention relates to a braking system. Particularly this invention relates to a braking system for use in a rolling stock to reduce the bleeding time significantly.
STATE OF THE ART IN THE FIELD
The conventional pneumatic brake system used in a rolling stock have twin pipe brake system comprising MR (Main reservoir) pipe and BP (Brake pipe). The MR and BP bleed the air one after another which delays the required brake force and thus stopping distance, to stop the train, increases. A brake valve is provided to facilitate air bleeding in the brake system.
There are disadvantages associated with the conventional braking system. One of the disadvantages is that air bleeding time is more.
Another disadvantage associated with the conventional braking system is that the build-up time is more and thus the stopping distance is more.
Yet another disadvantage associated with the conventional braking system is that with more number of carriage / cars in the trains the air bleeding time is more.
Still another disadvantage associated with the conventional braking system is that the Brake Power line is vented one after another.
A further disadvantage associated with the conventional braking system is one venting point only, but multiple venting points are not available.
OBJECTS OF THE INVENTION
Therefore, an object of the present invention is to provide a braking system for use in a rolling stock which obviates the disadvantages associated with the conventional braking system.
Another object of the present invention is to provide a braking system for use in a rolling stock which reduces the bleeding time significantly and thus stopping time of the train.
Yet another object of the present invention is to provide a braking system for use in a rolling stock which reduces the force built-up time.
Still another object of the present invention is to provide a braking system for use in a rolling stock which avoids accident by stopping the train at shorter distance.
A further object of the present invention is to provide a braking system for use in a rolling stock having means to facilitate venting of BP line simultaneously in all cars.
Another object of the present invention is to provide a braking system for use in a rolling stock which provides multiple venting points.
SUMMARY OF THE INVENTION
According to this invention, there is provided a braking system for use in a rolling stock comprising an item connected to a brake pressure (BP) line through a pipe, an item connected to the BP line through a pipe, a connecting pipe being provided between the item and the BP line near one end of a car near hose pipe, a connecting pipe being provided between the item and BP line near other end of the car near the hose pipe, item works on input received from item through a pipe such that to draw pressure from BP line through the pipe so as to vent the atmosphere in case the pressure available at is less than the pressure in the BP line.
BRIEF DESCRIPTION OF THE DRAWINGS
A braking system for use in a rolling stock, according to a preferred embodiment of the present invention, is herein described and illustrated in the accompanying drawings, wherein:
Figure 1, illustrates side view of the system,
DETAILED DESCRIPTION OF THE INVENTION
A braking system for use in a rolling stock is herein described with numerous specific details so as to provide a complete understanding of the invention. However, these specific details are exemplary details and should not be treated as the limitation to the scope of the invention. Throughout this specification the word “comprise” or variations such as “comprises or comprising”, will be understood to imply the inclusions of a stated element, integer or step, or group of elements, integers or steps, but not the exclusions of any other element, integer or step or group of elements, integers or steps.
Referring to the drawing, figures 1, side view of the braking system is shown. The braking system comprises twin pipe system having BP (brake pressure) pipe / line (1) and MR (main reservoir) pipe / line (2) provided with each car of a rolling stock. Hose pipes (3) and (4), secured with the BP pipe (1) and MR pipe (2), are provided to connect the BP line (1) and MR line (2) of the other car in flow communication. A distributor valve (5), having a plurality of pipes (6), (7) and (8) adapted to be connected to the BP pipe (1), MR pipe (2) and a pipe (9) provided between the brake cylinders (10). Brake cylinder (10) is provided with each bogies (11) so as to build up brake pressure through a driver brake valve (12) provided in the driver’s cabin in order to apply and release of brake as and when required by the driver of the rolling stock. The Driver brake valve (12) is adapted to be connected with the BP line (1) and MR line (2) such that to release the pressure from the BP pipe (1) and build up the pressure in the BP line (1) as and when required. The BP line (1) of one car is connected with the BP line (1) of another car hose pipe (3). Similarly, the MR line (2) is connected with the MR line (2) of another car through a hose pipe (4). In this manner the BP line (1) and MR line (2) of each are connected with each other.
The distributor valve (5) is provided to build up the brake pressure when pressure in the BP line (1) is dropped by actuating the brake valve (12) by the driver as and when required. Thus, the pressure drops in BP line (1) increases the pressure in the brake cylinder (10), that is, pressure drop in pipe (7) increases pressure in pipe (8) and the brake is applied.
When the brake is to be applied, the driver vents the BP pipe (1) with the help of driver brake valve (12) and the MR pipe (2) is blocked and therefore BP pipe (1) is allowed to bleed to the atmosphere. Similarly, when the brake is to be released, BP pipe (1) is charged with the help driver brake valve (12) by blocking the vent of the BP pipe (1) and connecting the BP pipe (1) with MR pipe (2) so as to charge the BP line (1).
Therefore, pneumatic braking is done through distributer valve (5) when pressure in BP line (1) is reduced and venting of the BP line (1) is done through driver’s brake valve (12) present in the driver cabin. It means that there is only one venting means, that is, driver brake valve (12) available in driver’s cabin and therefore pressure built up in the brake cylinder (10) needs to wait till the last cars BP line (1) is vented.
Therefore, according to the present invention a new brake system comprising item (13) and item (14) adapted to be connected with each other through a pipe (15). The item (13) is also connected to the BP line (1) through a pipe (16). Similarly, item (14) is connected to the BP line (1) through a pipe (17). A connecting pipe (18) is provided between the item (13) and BP line (1) near one end, for example, front end of the car near the hose pipe (3) within 1000mm. Similarly, a connecting pipe (19) is provided between the item (13) and BP line (1) near other end, for example, rear end of the car near the hose pipe (3) within 1000mm. Item (14) works on input received from item (13) through a pipe (15). If pressure available at (15) is less than the pressure in the BP line (1) then pressure is drawn from BP line (1) through the pipe (17) and is vented to the atmosphere.
Now when the brake is to be applied braking pressure difference in line (18) and (19) allows item (13) to connect pipe (16) and (15) and item (14) starts venting BP line (1) air from the car where it is installed. Similarly, same action takes place in all cars where ever new brake system of the present invention is installed.
When the brake is to be released the BP line (1) is charged through MR line (2) by the driver by actuating driver brake valve (12) available in the driver’s cabin. The pressure difference in line (18) and (19) stops the pipe (15) in input to the item (14) and item (13) is not able to vent BP line (1) which is getting charged now and BP line (1) remains charged.
The braking system of the present invention is thus assisting application of brake and release of brake without disturbing the existing / conventional braking arrangement available in the rolling stocks.
Certain features of the invention have been described with reference to the exemplary embodiments. However, the description is not intended to be construed in a limiting sense. Various modifications of the exemplary embodiments as well as other embodiments of the invention, which are apparent to the persons skilled in the art to which the invention pertains, are deemed to lie within the spirit and scope of the invention.
,CLAIMS:WE CLAIM:
1. A braking system comprising an item (13) connected to a brake pressure (BP) line (1) through a pipe (16), an item (14) connected to the BP line (1) through a pipe (17), a connecting pipe (18) being provided between the item (13) and the BP line (1) near one end of a car near hose pipe (3), a connecting pipe (19) being provided between the item (13) and BP line (1) near other end of the car near the hose pipe (3), item (14) works on input received from item (13) through a pipe (15) such that to draw pressure from BP line (1) through the pipe (17) so as to vent the atmosphere in case the pressure available at (15) is less than the pressure in the BP line (1).
2. The brake system as claimd in claim (1), wherein the item (13) and the item (14) are adapted to be connected with each other through a pipe (15).
3. The brake system as claimd in claim (1), wherein the connecting pipe (18) is provided near hose pipe (3) within 1000 mm.
4. The brake system as claimd in claim (1), wherein the connecting pipe (19) is provided near the hose pipe (3) within 1000mm.

Dated this 17th day of February, 2020

R. P. Yadav
IN/PA – 954
of sr4ipr Partners
Applicant’s Attorney