Title of Invention	A BRAKE BINDING ELIMINATOR UNIT FOR AC/DC EMU COACHES
Abstract	This invention relates to a brake binding eliminator unit for EMU coaches characterized in that digital pressure gauge for brake pipe (4) connected to a Brake Pipe line (P10), a digital pressure gauge for brake cylinder (3) and solenoid valve (1) connected to a brake cylinder line (P11), an application magnet valve (K7) and holding magnet valve (K8) connected to the electrical control unit for being monitored.

Title of Invention

A BRAKE BINDING ELIMINATOR UNIT FOR AC/DC EMU COACHES

Abstract

This invention relates to a brake binding eliminator unit for EMU coaches characterized in that digital pressure gauge for brake pipe (4) connected to a Brake Pipe line (P10), a digital pressure gauge for brake cylinder (3) and solenoid valve (1) connected to a brake cylinder line (P11), an application magnet valve (K7) and holding magnet valve (K8) connected to the electrical control unit for being monitored.

Full Text	FIELD OF INVENTION This invention relates to a brake binding eliminator unit for AC/DC EMU coaches. PRIOR ART Brake binding in EMU coaches is caused due to many reasons. However, most of the cases are due to mal-functioning of the EP brake units. Some time the reason for brake binding is not found. OBJECTS OF THE INVENTION An object of the this invention is to propose a brake binding eliminator unit for AC/DC EMU coaches which avoids brake binding in EMU coaches due to mal-functioning of the EP brake units. Another object of the this invention is to propose a brake binding eliminator unit for AC/DC EMU coaches which is applicable to EP brakes as well as to auto brakes. STATEMENT OF INVENTION According to this invention a brake binding eliminator unit for EMU coaches comprising of digital pressure gauge for brake pipe connected to a Brake Pipe line, a digital pressure gauge for brake cylinder and solenoid valve connected to a brake cylinder line, an application magnet valve and holding magnet valve connected to the electrical control unit for being monitored. BRIEF DESCRITPION OF THE ACCOMPANYING DRAWINGS Further objects and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawing and wherein: Fig. 1 shows schematic diagram of interface of brake binding eliminator for AC/DC EMU's. Fig. 2 shows brake binding eliminator for AC/DC EMU'S. DETAIL DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS Reference may be made to fig. 2. The brake binding eliminator of the present invention comprising an electrical control unit (5) for transmitting signal, digital pressure gauge (3 and 4), a solenoid valve (1), a lamp (13) and optionally a digital counter (2). The digital pressure gauge for brake pipe (4) and digital pressure gauge for brake cylinder (3) are provided for monitoring brake pipe pressure and brake cylinder pressure respectively. The solenoid valve, normally closed, exhausts brake cylinder pressure, which is disposed with isolating cock (12) for isolation in case of any accidental failure. The lamp gives an indication that, the brake binding eliminator has operated, which is provided with a reset switch. Indicator remains ON until it is not reset. The digital counter takes the reading of number of times, the eliminator has operated. This helps maintenance staff for attending EP unit if it has under gone operations, number of times. The counter is optionally having a reset switch, which is reset after attending the EP unit. Referring to fig.l, wherein the digital pressure gauge for brake pipe (4) is connected to the BP line (P10) and the digital pressure gauge for brake cylinder (3) and solenoid valve (1) are connected to the brake cylinder line (PI 1) through isolating cock (12). The digital pressure gauge for brake pipe (4) monitors the pressure in the brake pipe line (P10). When the pressure in the brake pipe line drops below the set pressure, the gauge (4) gives a digital signal to the electrical control unit (5). Digital pressure gauge (3) for brake cylinder also monitors the BC line pressure (Pll) and gives signal to the electrical control unit wherein it checks whether the pressure is above the set pressure. The Electrical control unit (5) monitors energized and de-energized signal through application magnet valve (K?) and holding magnet valve (Kg) from the brake system. All the four signals are evaluated by the electrical control unit (5). It analyses the interactions of these signals. Based on the analysis, the electrical control unit (5) takes a decision to hold or release the brake cylinder pressure (Pll) through the solenoid valve (1). The number of times the solenoid valve (1) has operated is recorded by the digital counter (2). Solenoid magnet valve (1) provided on the Brake Binding eliminator unit is normally closed i.e. exhaust port is closed when not energized. When emergized, the Brake cylinder pressure gets connected to the atmosphere for exhaust through this valve. Electrical Control unit (5) continuously monitors status of AMV (K7), HMV (K8), Brake Pipe (P10) & Brake Cylinder (PI 1) pressure. It gives signal to Solenoid magnet valve (1), when the Brake cylinder pressure doesn't get exhausted through the EP unit. In the instance, there is a BC pressure even when AMV & HMV are in de-energized state, solenoid valve (1) receives a signal from micro-processor of electrical control unit (5) to get energized. This connects brake cylinder line (Pll) to exhaust thus exhausting the BC pressure & releasing the brakes. Electrical Control Unit (5) also monitors Brake pipe pressure (P10), which is at pre-set value. During Auto Brake application, Brake pipe pressure is dropped and Brake application takes place when the BP pressure drops below the set value. In the instance, it does not drop below the set value in the absence of energization of valves (K7 and K8) and presence of BC pressure then also the Electrical control unit operates the solenoid valve and exhausts the brake cylinder pressure, thereby avoiding the possibility of brake binding. Brakes are applied by energizing Holding Magnet Valve (HMV) and Application Magnet Valve (AMV). Brakes are released by de-energizing them. Through Application Magnet Valve (K7) air from reservoir is admitted to the brake cylinder. Holding Magnet Valve (K8) controls the exhaust of the brake cylinder to the atmosphere. Thus, brake cylinder pressure disappears with the de-energization of both valves (K? and Kg). This takes care of all those cases like failure of Valves, which prevents exhaust of brake cylinder pressure to the atmosphere. In auto brakes, to apply the brakes, the Brake pipe pressure is reduced. This causes the development of brake cylinder pressure inside the brake cylinders. When the brakes are to be released, the brake pipe pressure is increased. This causes the brake cylinder pressure to exhaust to the atmosphere. Thus, when, Brake pipe pressure is at present value, there is no brake cylinder pressure. It is to be noted that the present invention is susceptible to modifications, adaptations and changes by those skilled in the art. Such variant embodiments employing the concepts and features of this invention are intended to be within the scope of the present invention, which is further set forth under the following claims: - WE CLAIM; 1. A brake binding eliminator unit for EMU coaches characterized in that digital pressure gauge for brake pipe (4) connected to a Brake Pipe line (P10), a digital pressure gauge for brake cylinder (3) and solenoid valve (1) connected to a brake cylinder line (P11), an application magnet valve (K7) and holding magnet valve (K8) connected to the electrical control unit for being monitored. 2. A brake binding eliminator as claimed in claim 1, wherein the BC line is connected to the digital pressure gauge for brake cylinder and solenoid valve through an isolating cock (12). 3. A brake binding eliminator unit as claimed in any of the preceding claims, comprising a lamp (13) for indicating that the eliminator has operated. 4. A brake binding eliminator as claimed in any of the preceding claims, comprising a digital counter (2) for taking reading of number of times the eliminator has operated, optionally provided with a reset switch. 5. A brake binding eliminator unit for EMU coaches substantially as herein described and illustrated with reference to accompanying drawings.

Full Text

FIELD OF INVENTION
This invention relates to a brake binding eliminator unit for AC/DC EMU coaches. PRIOR ART
Brake binding in EMU coaches is caused due to many reasons. However, most of the cases are due to mal-functioning of the EP brake units. Some time the reason for brake binding is not found.
OBJECTS OF THE INVENTION
An object of the this invention is to propose a brake binding eliminator unit for AC/DC EMU coaches which avoids brake binding in EMU coaches due to mal-functioning of the EP brake units.
Another object of the this invention is to propose a brake binding eliminator unit for AC/DC EMU coaches which is applicable to EP brakes as well as to auto brakes.
STATEMENT OF INVENTION
According to this invention a brake binding eliminator unit for EMU coaches comprising of digital pressure gauge for brake pipe connected to a Brake Pipe line, a digital pressure gauge for brake cylinder and solenoid valve connected to a brake cylinder line, an application magnet valve and holding magnet valve connected to the electrical control unit for being monitored.
BRIEF DESCRITPION OF THE ACCOMPANYING DRAWINGS
Further objects and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawing and wherein:
Fig. 1 shows schematic diagram of interface of brake binding eliminator for AC/DC
EMU's.
Fig. 2 shows brake binding eliminator for AC/DC EMU'S.
DETAIL DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS
Reference may be made to fig. 2. The brake binding eliminator of the present invention comprising an electrical control unit (5) for transmitting signal, digital pressure gauge (3 and 4), a solenoid valve (1), a lamp (13) and optionally a digital counter (2). The digital pressure gauge for brake pipe (4) and digital pressure gauge for brake cylinder (3) are provided for monitoring brake pipe pressure and brake cylinder pressure respectively. The solenoid valve, normally closed, exhausts brake cylinder pressure, which is disposed with isolating cock (12) for isolation in case of any accidental failure.
The lamp gives an indication that, the brake binding eliminator has operated, which is provided with a reset switch. Indicator remains ON until it is not reset. The digital counter takes the reading of number of times, the eliminator has operated. This helps maintenance staff for attending EP unit if it has under gone operations, number of times. The counter is optionally having a reset switch, which is reset after attending the EP unit.
Referring to fig.l, wherein the digital pressure gauge for brake pipe (4) is connected to the BP line (P10) and the digital pressure gauge for brake cylinder (3) and solenoid valve (1) are connected to the brake cylinder line (PI 1) through isolating cock (12).
The digital pressure gauge for brake pipe (4) monitors the pressure in the brake pipe line (P10). When the pressure in the brake pipe line drops below the set pressure, the gauge (4) gives a digital signal to the electrical control unit (5). Digital pressure gauge (3) for brake cylinder also monitors the BC line pressure (Pll) and gives signal to the electrical control unit wherein it checks whether the pressure is above the set pressure. The Electrical control unit (5) monitors energized and de-energized signal through application magnet valve (K?) and holding magnet valve (Kg) from the brake system.
All the four signals are evaluated by the electrical control unit (5). It analyses the interactions of these signals. Based on the analysis, the electrical control unit (5) takes a decision to hold or release the brake cylinder pressure (Pll) through the solenoid valve (1). The number of

times the solenoid valve (1) has operated is recorded by the digital counter (2).
Solenoid magnet valve (1) provided on the Brake Binding eliminator unit is normally closed i.e. exhaust port is closed when not energized. When emergized, the Brake cylinder pressure gets connected to the atmosphere for exhaust through this valve.
Electrical Control unit (5) continuously monitors status of AMV (K7), HMV (K8), Brake Pipe (P10) & Brake Cylinder (PI 1) pressure. It gives signal to Solenoid magnet valve (1), when the Brake cylinder pressure doesn't get exhausted through the EP unit.
In the instance, there is a BC pressure even when AMV & HMV are in de-energized state, solenoid valve (1) receives a signal from micro-processor of electrical control unit (5) to get energized. This connects brake cylinder line (Pll) to exhaust thus exhausting the BC pressure & releasing the brakes. Electrical Control Unit (5) also monitors Brake pipe pressure (P10), which is at pre-set value.
During Auto Brake application, Brake pipe pressure is dropped and Brake application takes place when the BP pressure drops below the set value. In the instance, it does not drop below the set value in the absence of energization of valves (K7 and K8) and presence of BC pressure then also the Electrical control unit operates the solenoid valve and exhausts the brake cylinder pressure, thereby avoiding the possibility of brake binding.
Brakes are applied by energizing Holding Magnet Valve (HMV) and Application Magnet Valve (AMV). Brakes are released by de-energizing them. Through Application Magnet Valve (K7) air from reservoir is admitted to the brake cylinder. Holding Magnet Valve (K8) controls the exhaust of the brake cylinder to the atmosphere.
Thus, brake cylinder pressure disappears with the de-energization of both valves (K? and Kg). This takes care of all those cases like failure of Valves, which prevents exhaust of brake cylinder pressure to the atmosphere.
In auto brakes, to apply the brakes, the Brake pipe pressure is reduced. This causes the development of brake cylinder pressure inside the brake cylinders. When the brakes are to be released, the brake pipe pressure is increased. This causes the brake cylinder pressure to exhaust to the atmosphere. Thus, when, Brake pipe pressure is at present value, there is no brake cylinder pressure.
It is to be noted that the present invention is susceptible to modifications, adaptations and changes by those skilled in the art. Such variant embodiments employing the concepts and features of this invention are intended to be within the scope of the present invention, which is further set forth under the following claims: -

WE CLAIM;
1. A brake binding eliminator unit for EMU coaches characterized in that digital pressure gauge for brake pipe (4) connected to a Brake Pipe line (P10), a digital pressure gauge for brake cylinder (3) and solenoid valve (1) connected to a brake cylinder line (P11), an application magnet valve (K7) and holding magnet valve (K8) connected to the electrical control unit for being monitored.
2. A brake binding eliminator as claimed in claim 1, wherein the BC line is connected to the digital pressure gauge for brake cylinder and solenoid valve through an isolating cock (12).
3. A brake binding eliminator unit as claimed in any of the preceding claims, comprising a lamp (13) for indicating that the eliminator has operated.
4. A brake binding eliminator as claimed in any of the preceding claims, comprising a digital counter (2) for taking reading of number of times the eliminator has operated, optionally provided with a reset switch.
5. A brake binding eliminator unit for EMU coaches substantially as herein described and illustrated with reference to accompanying drawings.

Documents:

206-del-2006-206-del-2006-206-del-2006-Correspondence-Others-(03-06-2013).pdf

206-DEL-2006-Abstract-(17-03-2011).pdf

206-del-2006-abstract.pdf

206-DEL-2006-Claims-(17-03-2011).pdf

206-del-2006-claims.pdf

206-del-2006-Correspondence Others-(25-02-2013).pdf

206-del-2006-Correspondence Others-(29-10-2013).pdf

206-DEL-2006-Correspondence-Others-(17-03-2011).pdf

206-DEL-2006-Correspondence-Others-(25-03-2011).pdf

206-del-2006-correspondence-others.pdf

206-del-2006-description (complete).pdf

206-DEL-2006-Drawings-(25-03-2011).pdf

206-del-2006-drawings.pdf

206-del-2006-form-1.pdf

206-del-2006-form-2.pdf

206-del-2006-form-26.pdf

206-DEL-2006-Form-3-(17-03-2011).pdf

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Patent Number

262628

Indian Patent Application Number

206/DEL/2006

PG Journal Number

36/2014

Publication Date

05-Sep-2014

Grant Date

01-Sep-2014

Date of Filing

25-Jan-2006

Name of Patentee

ESCORTS LIMITED

Applicant Address

PLOT NO. 115, SECTOR-24, FARIDABAD-121005, INDIA.

Inventors:

#	Inventor's Name	Inventor's Address
1	RAJIV AGARWAL	PLOT NO. 115, SECTOR-24, FARIDABAD-121005, INDIA.
2	NAVEEN SANGARI	PLOT NO. 115, SECTOR-24, FARIDABAD-121005, INDIA.

PCT International Classification Number

H01T 23/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA