Title of Invention	AN IMPROVED ARRANGEMENT OF POWER RAILS AT TRANSFER POINTS OF COKE OVEN BATTERY FOR SMOOTH TRAVEL OF QUENCHING LOCO AND CAR
Abstract	The present invention relates to an improved arrangement of power rails at transfer points of coke oven battery for smooth travel of quenching loco and car. The arrangement comprises of a plurality of power rails (14) having both end parts bent at 30 degree (18) at all the transfer points and carbon brush (19) for acting as power collector. The rails (14) are arranged longitudinally in overlapping fashion with an air gap of 8-12 mm wherein the carbon brushes (19) are given round shape at the edges for improving the slide on the rail and the said carbon brush acting as power collector moves over the power rail (14) from which power is transmitted to the quenching loco and car on transfer trolley (12, 13) without interruption of power and dislocation of power collectors.

Title of Invention

AN IMPROVED ARRANGEMENT OF POWER RAILS AT TRANSFER POINTS OF COKE OVEN BATTERY FOR SMOOTH TRAVEL OF QUENCHING LOCO AND CAR

Abstract

The present invention relates to an improved arrangement of power rails at transfer points of coke oven battery for smooth travel of quenching loco and car. The arrangement comprises of a plurality of power rails (14) having both end parts bent at 30 degree (18) at all the transfer points and carbon brush (19) for acting as power collector. The rails (14) are arranged longitudinally in overlapping fashion with an air gap of 8-12 mm wherein the carbon brushes (19) are given round shape at the edges for improving the slide on the rail and the said carbon brush acting as power collector moves over the power rail (14) from which power is transmitted to the quenching loco and car on transfer trolley (12, 13) without interruption of power and dislocation of power collectors.

Full Text	FIELD OF INVENTION The present invention relates to an improved arrangement of power rails at transfer points of coke oven battery for smooth travel of quenching loco and car. More particularly, the present invention relates to an improved power rail formation at transfer points between fixed and moving zone of travel area of quenching loco and car of coke oven batteries. The power collection method of the above-mentioned mobile machine is through spring loaded power collectors from copper leaded power rails. BACKGROUND OF THE INVENTION In an integrated steel plant, hot metal is produced from iron ore through blast furnaces. In this method of steel production coke plays an important role. It holds the whole burden and acts as the source of energy. This phenomenon can be easily understood by the fact that to produce 1 ton of hot metal about half a tone of coke is required. Coke production is carried out by carbonization of coking coal in ovens, which are arranged in series to form a coke oven battery. These batteries are of two types, one is top charge and another is stamp charge. In stamp charge batteries coal cake is prepared by stamping process and is charged into the oven in coal cake form. After about 20 hours of carbonization process coal gets converted into coke which is then pushed by stamping, charging and pushing machine (a mobile oven machine). This hot coke is received in Quenching car, which is coupled to a Quenching Loco. During this process loco drives the car at a fixed speed for uniform distribution of hot coke for proper distribution and in turn proper quenching and uniform moisture percentage of coke. This coke is then taken to quenching station where it is quenched by water flooding method. After quenching the coke is again brought to wharf and dumped for dispatching it to blast furnaces after proper sizing and screening. Quenching loco and car move on track rails just like conventional trains, but the power requirement is 415V and 3 phase so power transmission is realized 8 sets Power collectors (2 per phase and 2 as earth collectors) collecting power from copper headed power rails. There are 2 batteries of 70 ovens each, arranged one after the other. There are two quenching stations, one for each battery, located at the opposite ends of the battery. There are 3 sets of quenching loco and car. Schematic layout of tract rails, batteries and quenching station is shown in Fig. 1. At any moment of time two of them are in operations in each battery and one is kept down for maintenance and as standby. As the quenching stations are at the opposite ends and this is the requirement of the process, orientation of Quenching loco and car operating in one battery is required to be changed before putting it into operation in another battery. To facilitate this, there is a provision of transfer trolley at each end of both batteries. There are power rails on these transfer trolleys too for transmitting power to quenching loco and car. At these transfer points, which are 4 in numbers and at these points, rails are isolated by air gap of 10 mm. schematic diagram of various transfer points is shown in fig.2 with dark boxes indicating transfer points between fixed and moving zone. Other transfer points are on fixed zone only and are provided for power isolation purpose and for ease of maintenance of power rails. As transfer trolley is movable, even perfect alignment of track rail doesn't ensure perfect alignment of power rails as these power rails are at a height of about 4 meters from floor. So the rails are ideally misalign by 5mm which went up with time and the misalignment further increases when loco and car are transferred to/from transfer trolley from/to fixed zone. The reason of the misalignment was analyzed and detect that the mass load in transfer trolley along with loco and car on it is considerably high which causes sagging of transfer trolley. A small deflection at the base of trolley reflected as large misalignment in power rails as the rails are at a height of 4 meters from the base. Due to this misalignment power collectors of quenching loco use to break frequently resulting in damage to property and delay in production. The process of transferring loco from one point to another involved more manpower, was unsafe and use to take longer duration (about 1 hour) to complete the process as loco was required to be moved at a very slow speed. OBJECT OF THE INVENTION It is therefore, an object of the present invention to propose an improved power rail formation at transfer points for power transmission applicable in quenching loco and car movement on transfer trolley, which eliminates the adversity of the prior act. Another object of the present invention is to propose an improved power rails formation at transfer points for power transmission applicable in quenching loco and car movement on transfer trolley, which reduces the change over time of 10-15 minutes from 1 hour. A still another object of the present invention is to propose an improved power rail formation at transfer points for power transmission applicable in quenching loco and car movement on transfer trolley, which increases the productivity. A further object of the present invention Is to propose an improved power rail formation at transfer points for power transmission applicable in quenching loco and car movement on transfer trolley, which is trouble free as well hassle free operation of orientation changing/transfer of loco to/from transfer trolley. A still further object of the present invention to propose an improved power rail formation at transfer points for power transmission applicable in quenching loco and car movement on transfer trolley, which reduces the involvement of man-power. An yet further object of the present invention to propose an improved power rail formation at transfer points for power transmission applicable in quenching loco and car movement on transfer trolley, which eliminates the hazards and improves safety. SUMMARY OF THE INVENTION To eliminate the disadvantages of the prior art and for remedy of the existing problem in the production line an emphasis is made to Install a improve power rail at transfer points. The power rail was bent at 30 degree at all the transfer points and was fixed In overlapping fashion with an air gap of 8mm to 12mm. Carbon blocks of the power collectors were given round shape at the edges to further improve the slide on the rail. After modifications, quenching ioco and car was moved, to and from transfer points, in both directions with different speeds and with different misalignments and found working without any problem. The new system was taking the misalignment of even 80mm without any jerks in the movement of power collector on the power rails. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING Fig-1- shows a sketch of the layout of battery 8 and 9 with location of transfer trolleys, track rails of the quenching loco and quenching stations of both batteries. Fig-2- shows a sketch of different transfer points on quenching loco power rails through out battery 8 and 9. Fig-3- shows a sketch of design at transfer points and carbon block of power collector in prior art. Fig-4- shows a new shapped carbon blocks of power collectors and power rail development as per invention. DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION As shown in Fig.4, one both the ends of power rails (14) are bent at 30 degree (18) at all the transfer points and was fixed in overlapping fashion with an air gap 8-12 mm mounted on the side wall. The carbon blocks (19) of power collector is a round shape at the sharp edges to facilitate the sliding on the rails. The carbon brush (19) acts as a power collector and moves over the power rail (14) from which power is transmitted to quenching loco and car on transfer trolley (12,13) without interruption of power and dislocation of power collectors. This improved power rails formation at transfer points for power transmission applicable in quenching loco and car movement on transfer trolley reduces the change over time to 10-15 minutes from 1 hour. The power collection method of quenching loco and car of coke oven batteries is through spring loaded power collectors from copper headed power rails. Disadvantages of previous arrangement: In previous arrangement, power rails on fixed part and movable transfer trolley were arranged in such a way that ends of the power rails use to align side by side with an air gap of 10 mm. One set of power rails are on movable transfer trolley. Transfer trolley is on wheels and moves on track. Even on perfect alignment of transfer trolley track with fixed part's track (at ground level), there used to be a misalignment of at least 5 mm was observed at power rail's height (at height of 2 mtrs). When quenching loco and car comes on transfer trolley, due to weight, structure of transfer trolley sags (allowable sag of structure is 16 mm). Due to this sag at ground level, misalignment of power rail (at height of 2 mtrs) between fixed part and transfer trolley power rails, used to increase from 5 mm to 10-15 mm. As the rails ends were arranged side by side, due to above mentioned increased misalignment, spring loaded power collectors of quenching loco was not able to slide smoothly on rails resulting in breakage of collectors at that point. The after effects of this condition were, power interruptions, collector damage and delay in transfer of quenching loco. Inventive Steps: To overcome the problems faced at transfer points, following step was taken to minimize the problem: 1. The breakthrough idea of overlapping bent power rails at transfer point is implemented. Two bent pieces of power rails are developed to fix the pieces as shown in sketch (Fig.4 of submitted document), in ground power rail and tool trial in different conditions. The arrangement is working well even with misalignment of about 80 mm. After successful trial, the idea is implemented in one transfer point (for all 4 rails). The performance is observed and then replicated at all transfer points. After complete implementation of the inventive feature, the time for quenching loco to cross transfer point reduced from 1 hour to 10-15 minutes i.e. there is a saving of 45 mins per operation which is the main advantage in terms of reduction in production delay (On an average 4 such operations are required per month). Apart from this, equipment damage (power collector, cost of each collector is Rs. 45000.00) is totally eliminated, now there is no power interruption in quenching loco, no unsafe incident takes place and we don't need to lift collectors in presence of power (electrocution hazard eliminated). KEY FEATURE Reference Character Features Figures Power rail section of th 1 fix maintenance bay of 2 battery 8. Power rail section of 2 the transfer trolley of 2 battery 8. Power rail section of 3 under Quenching 2 station battery 8. Power rail section of 4 operating zone of 2 batter 8. Power rail section of 5 sick bay between 2 battery 8 and 9 Power rail section of 6 operating zone of 2 battery 9. Power rail section of 7 under Quenching 2 station battery 9. Power rail section of 8 the transfer trolley of 2 batter 9. Reference Character Features Figures Power rail section of 9. the fix maintenance by 2 of battery 9 10 Battery 9 1 11 Batter 8 1 Transfer Trolley and 12 13 l sick bay rail Quenching loco main track rail 15 Quenching Station 1 Transfer point in prior 16 3 art Carbon block of 17 3 collector in prior art Transfer point 18 4 according to present invention Rounded edge of 19 4 carbon block of collector as per present invention WE CLAIM 1. Improved arrangement of Power rails at transfer points of coke oven battery for smooth travel of Quenching loco and car comprising: a plurality of power rails (14) having both end parts bent at 30 degree (18) at all the transfer points; carbon brush (19) for acting as power collector; characterized in that, the rails (14) are arranged longitudinally in overlapping fashion with an air gap of 8-12 mm wherein the carbon brushes (19) are given round shape at the edges for improving the slide on the rail and the said carbon brush acting as power collector moves over the power rail (14) from which power is transmitted to the quenching loco and car on transfer trolley (12, 13) without interruption of power and dislocation of power collectors. 2. The improved arrangement as claimed in claim 1, wherein the power collection method of quenching loco and car of coke oven batteries is through spring loaded power collectors from copper headed power rails. The present invention relates to an improved arrangement of power rails at transfer points of coke oven battery for smooth travel of quenching loco and car. The arrangement comprises of a plurality of power rails (14) having both end parts bent at 30 degree (18) at all the transfer points and carbon brush (19) for acting as power collector. The rails (14) are arranged longitudinally in overlapping fashion with an air gap of 8-12 mm wherein the carbon brushes (19) are given round shape at the edges for improving the slide on the rail and the said carbon brush acting as power collector moves over the power rail (14) from which power is transmitted to the quenching loco and car on transfer trolley (12, 13) without interruption of power and dislocation of power collectors.

Full Text

FIELD OF INVENTION
The present invention relates to an improved arrangement of power rails at transfer
points of coke oven battery for smooth travel of quenching loco and car. More
particularly, the present invention relates to an improved power rail formation at
transfer points between fixed and moving zone of travel area of quenching loco and car
of coke oven batteries. The power collection method of the above-mentioned mobile
machine is through spring loaded power collectors from copper leaded power rails.
BACKGROUND OF THE INVENTION
In an integrated steel plant, hot metal is produced from iron ore through blast furnaces.
In this method of steel production coke plays an important role. It holds the whole
burden and acts as the source of energy. This phenomenon can be easily understood
by the fact that to produce 1 ton of hot metal about half a tone of coke is required.
Coke production is carried out by carbonization of coking coal in ovens, which are
arranged in series to form a coke oven battery. These batteries are of two types, one is
top charge and another is stamp charge. In stamp charge batteries coal cake is
prepared by stamping process and is charged into the oven in coal cake form. After
about 20 hours of carbonization

process coal gets converted into coke which is then pushed by stamping,
charging and pushing machine (a mobile oven machine). This hot coke is
received in Quenching car, which is coupled to a Quenching Loco. During
this process loco drives the car at a fixed speed for uniform distribution of
hot coke for proper distribution and in turn proper quenching and uniform
moisture percentage of coke. This coke is then taken to quenching station
where it is quenched by water flooding method. After quenching the coke
is again brought to wharf and dumped for dispatching it to blast furnaces
after proper sizing and screening.
Quenching loco and car move on track rails just like conventional trains, but
the power requirement is 415V and 3 phase so power transmission is
realized 8 sets Power collectors (2 per phase and 2 as earth collectors)
collecting power from copper headed power rails.
There are 2 batteries of 70 ovens each, arranged one after the other.
There are two quenching stations, one for each battery, located at the
opposite ends of the battery. There are 3 sets of quenching loco and car.
Schematic layout of tract rails, batteries and quenching station is shown in
Fig. 1. At any moment of time two of them are in operations in each
battery and one is kept down for maintenance and as standby. As the
quenching stations are at the opposite ends and this is the requirement of
the process, orientation of Quenching loco and car operating in one battery

is required to be changed before putting it into operation in another
battery. To facilitate this, there is a provision of transfer trolley at each end
of both batteries. There are power rails on these transfer trolleys too for
transmitting power to quenching loco and car. At these transfer points,
which are 4 in numbers and at these points, rails are isolated by air gap of
10 mm. schematic diagram of various transfer points is shown in fig.2 with
dark boxes indicating transfer points between fixed and moving zone.
Other transfer points are on fixed zone only and are provided for power
isolation purpose and for ease of maintenance of power rails. As transfer
trolley is movable, even perfect alignment of track rail doesn't ensure
perfect alignment of power rails as these power rails are at a height of
about 4 meters from floor. So the rails are ideally misalign by 5mm which
went up with time and the misalignment further increases when loco and
car are transferred to/from transfer trolley from/to fixed zone. The reason
of the misalignment was analyzed and detect that the mass load in transfer
trolley along with loco and car on it is considerably high which causes
sagging of transfer trolley. A small deflection at the base of trolley
reflected as large misalignment in power rails as the rails are at a height of
4 meters from the base.
Due to this misalignment power collectors of quenching loco use to break
frequently resulting in damage to property and delay in production. The
process of transferring loco from one point to another involved more

manpower, was unsafe and use to take longer duration (about 1 hour) to
complete the process as loco was required to be moved at a very slow
speed.
OBJECT OF THE INVENTION
It is therefore, an object of the present invention to propose an improved
power rail formation at transfer points for power transmission applicable in
quenching loco and car movement on transfer trolley, which eliminates the
adversity of the prior act.
Another object of the present invention is to propose an improved power
rails formation at transfer points for power transmission applicable in
quenching loco and car movement on transfer trolley, which reduces the
change over time of 10-15 minutes from 1 hour.
A still another object of the present invention is to propose an improved
power rail formation at transfer points for power transmission applicable in
quenching loco and car movement on transfer trolley, which increases the
productivity.
A further object of the present invention Is to propose an improved power
rail formation at transfer points for power transmission applicable in
quenching loco and car movement on transfer trolley, which is trouble free

as well hassle free operation of orientation changing/transfer of loco
to/from transfer trolley.
A still further object of the present invention to propose an improved power
rail formation at transfer points for power transmission applicable in
quenching loco and car movement on transfer trolley, which reduces the
involvement of man-power.
An yet further object of the present invention to propose an improved
power rail formation at transfer points for power transmission applicable in
quenching loco and car movement on transfer trolley, which eliminates the
hazards and improves safety.
SUMMARY OF THE INVENTION
To eliminate the disadvantages of the prior art and for remedy of the
existing problem in the production line an emphasis is made to Install a
improve power rail at transfer points. The power rail was bent at 30
degree at all the transfer points and was fixed In overlapping fashion with
an air gap of 8mm to 12mm.
Carbon blocks of the power collectors were given round shape at the edges
to further improve the slide on the rail.

After modifications, quenching ioco and car was moved, to and from
transfer points, in both directions with different speeds and with different
misalignments and found working without any problem. The new system
was taking the misalignment of even 80mm without any jerks in the
movement of power collector on the power rails.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
Fig-1- shows a sketch of the layout of battery 8 and 9 with location of
transfer trolleys, track rails of the quenching loco and quenching stations of
both batteries.
Fig-2- shows a sketch of different transfer points on quenching loco power
rails through out battery 8 and 9.
Fig-3- shows a sketch of design at transfer points and carbon block of
power collector in prior art.
Fig-4- shows a new shapped carbon blocks of power collectors and power
rail development as per invention.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION
As shown in Fig.4, one both the ends of power rails (14) are bent at 30 degree (18) at
all the transfer points and was fixed in overlapping fashion with an air gap 8-12 mm mounted
on the side wall.
The carbon blocks (19) of power collector is a round shape at the sharp edges to
facilitate the sliding on the rails.
The carbon brush (19) acts as a power collector and moves over the power rail (14)
from which power is transmitted to quenching loco and car on transfer trolley (12,13) without
interruption of power and dislocation of power collectors.
This improved power rails formation at transfer points for power transmission applicable
in quenching loco and car movement on transfer trolley reduces the change over time to 10-15
minutes from 1 hour.
The power collection method of quenching loco and car of coke oven batteries is through
spring loaded power collectors from copper headed power rails.
Disadvantages of previous arrangement:
In previous arrangement, power rails on fixed part and movable transfer trolley were
arranged in such a way that ends of the power rails use to align side by side with an air gap of
10 mm. One set of power rails are on movable transfer trolley. Transfer trolley is on wheels and
moves on track. Even on perfect alignment of transfer trolley track with fixed part's track (at
ground level), there used to be a misalignment of at least 5 mm was observed at power rail's
height (at height of 2 mtrs). When quenching loco and car comes on transfer trolley, due to
weight, structure of transfer trolley sags (allowable sag of structure is 16 mm). Due to this sag
at ground level, misalignment of power rail (at height of 2 mtrs) between fixed part and
transfer trolley power rails, used to increase from 5 mm to 10-15 mm.
As the rails ends were arranged side by side, due to above mentioned increased
misalignment, spring loaded power collectors of quenching loco was not able to slide smoothly
on rails resulting in breakage of collectors at that point. The after effects of this condition were,
power interruptions, collector damage and delay in transfer of quenching loco.
Inventive Steps:
To overcome the problems faced at transfer points, following step was taken to minimize
the problem:
1. The breakthrough idea of overlapping bent power rails at transfer point is implemented.
Two bent pieces of power rails are developed to fix the pieces as shown in sketch (Fig.4
of submitted document), in ground power rail and tool trial in different conditions. The
arrangement is working well even with misalignment of about 80 mm. After successful
trial, the idea is implemented in one transfer point (for all 4 rails). The performance is
observed and then replicated at all transfer points.
After complete implementation of the inventive feature, the time for quenching loco to cross
transfer point reduced from 1 hour to 10-15 minutes i.e. there is a saving of 45 mins per
operation which is the main advantage in terms of reduction in production delay (On an
average 4 such operations are required per month). Apart from this, equipment damage (power
collector, cost of each collector is Rs. 45000.00) is totally eliminated, now there is no power
interruption in quenching loco, no unsafe incident takes place and we don't need to lift
collectors in presence of power (electrocution hazard eliminated).

KEY FEATURE
Reference Character Features Figures
Power rail section of th
1 fix maintenance bay of 2
battery 8.
Power rail section of
2 the transfer trolley of 2
battery 8.
Power rail section of
3 under Quenching 2
station battery 8.
Power rail section of
4 operating zone of 2
batter 8.
Power rail section of
5 sick bay between 2
battery 8 and 9
Power rail section of
6 operating zone of 2
battery 9.
Power rail section of
7 under Quenching 2
station battery 9.
Power rail section of
8 the transfer trolley of 2
batter 9.

Reference Character Features Figures
Power rail section of
9. the fix maintenance by 2
of battery 9
10 Battery 9 1
11 Batter 8 1
Transfer Trolley and
12 13 l
sick bay rail
Quenching loco main
track rail
15 Quenching Station 1
Transfer point in prior
16 3
art
Carbon block of
17 3
collector in prior art
Transfer point
18 4
according to present
invention
Rounded edge of
19 4
carbon block of
collector as per present
invention

WE CLAIM
1. Improved arrangement of Power rails at transfer points of coke oven battery for
smooth travel of Quenching loco and car comprising:
a plurality of power rails (14) having both end parts bent at 30 degree (18) at all
the transfer points;
carbon brush (19) for acting as power collector;
characterized in that,
the rails (14) are arranged longitudinally in overlapping fashion with an air gap of
8-12 mm wherein the carbon brushes (19) are given round shape at the edges
for improving the slide on the rail and the said carbon brush acting as power
collector moves over the power rail (14) from which power is transmitted to the
quenching loco and car on transfer trolley (12, 13) without interruption of power
and dislocation of power collectors.
2. The improved arrangement as claimed in claim 1, wherein the power
collection method of quenching loco and car of coke oven batteries is through
spring loaded power collectors from copper headed power rails.

The present invention relates to an improved arrangement of power rails at transfer
points of coke oven battery for smooth travel of quenching loco and car. The
arrangement comprises of a plurality of power rails (14) having both end parts bent at
30 degree (18) at all the transfer points and carbon brush (19) for acting as power
collector. The rails (14) are arranged longitudinally in overlapping fashion with an air
gap of 8-12 mm wherein the carbon brushes (19) are given round shape at the edges
for improving the slide on the rail and the said carbon brush acting as power collector
moves over the power rail (14) from which power is transmitted to the quenching loco
and car on transfer trolley (12, 13) without interruption of power and dislocation of
power collectors.

Documents:

01358-kol-2006-abstract.pdf

01358-kol-2006-asignment.pdf

01358-kol-2006-claims.pdf

01358-kol-2006-correspondence other.pdf

01358-kol-2006-correspondence-1.1.pdf

01358-kol-2006-description (complete).pdf

01358-kol-2006-drawings.pdf

01358-kol-2006-form-1.pdf

01358-kol-2006-form-2.pdf

01358-kol-2006-form-5.pdf

01358-kol-2006-form-9.pdf

1358-kol-2006-abstract 1.1.pdf

1358-kol-2006-amanded claims.pdf

1358-kol-2006-amanded pages of specification.pdf

1358-KOL-2006-CORRESPONDENCE 1.1.pdf

1358-KOL-2006-CORRESPONDENCE.pdf

1358-kol-2006-description (complete) 1.1.pdf

1358-kol-2006-drawings 1.1.pdf

1358-kol-2006-examination report reply recieved.pdf

1358-KOL-2006-EXAMINATION REPORT.pdf

1358-kol-2006-form 1-1.1.pdf

1358-KOL-2006-FORM 18.pdf

1358-kol-2006-form 2-1.1.pdf

1358-KOL-2006-FORM 3.pdf

1358-KOL-2006-FORM 5.pdf

1358-KOL-2006-GPA.pdf

1358-KOL-2006-GRANTED-ABSTRACT.pdf

1358-KOL-2006-GRANTED-CLAIMS.pdf

1358-KOL-2006-GRANTED-DESCRIPTION (COMPLETE).pdf

1358-KOL-2006-GRANTED-DRAWINGS.pdf

1358-KOL-2006-GRANTED-FORM 1.pdf

1358-KOL-2006-GRANTED-FORM 2.pdf

1358-KOL-2006-GRANTED-SPECIFICATION.pdf

1358-KOL-2006-OTHERS 1.1.pdf

1358-kol-2006-others.pdf

1358-kol-2006-pa.pdf

1358-kol-2006-petiton under rule 137.pdf

1358-KOL-2006-REPLY TO EXAMINATION REPORT.pdf

abstract-01358-kol-2006.jpg

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Patent Number

251914

Indian Patent Application Number

1358/KOL/2006

PG Journal Number

16/2012

Publication Date

20-Apr-2012

Grant Date

17-Apr-2012

Date of Filing

13-Dec-2006

Name of Patentee

TATA STEEL LIMITED

Applicant Address

JAMSHEDPUR 831001

Inventors:

#	Inventor's Name	Inventor's Address
1	ARBIND KR. SINGH	TATA STEEL LIMITED, JAMSHEDPUR 831001
2	T.M.SRIVASTAVA	TATA STEEL LIMITED, JAMSHEDPUR 831 001

PCT International Classification Number

B60L5/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA