Title of Invention	A LOCKING FIXTURE FOR VALVES
Abstract	The present invention relates to a locking device for valves provided with a square shaped spindle rotatable from 0° to 90° for opening and closing operation comprising atleast two parts, a first part (2) having an inverted 'L' configuration with a hole (6) in short arm end and a square shaped frame structure connected at corner (3) at the long arm end and a second part (7) having a plurality of holes (8,16) at one member and a circular shape frame structure (9) at the other end; the square shaped frame structure (3) of the first part (1) is insertable to a square shaped spindle (4) of the valve (5); the circular frame structure (9) of second part (7) consisting of two circular halves (10,11) which are mountable on the pipe (12) by means of rigid fasteners (13,14) and the hole (6) of first part (2) and the hole (16) of second part (7) are locked by means of a locking pad (15) and the hole (17) of first part (2) is fastened with the hole (8) of second part (7) by means of a fastener characterised in operating the valve (5) either in full opening condition or in full closing condition.

Title of Invention

A LOCKING FIXTURE FOR VALVES

Abstract

The present invention relates to a locking device for valves provided with a square shaped spindle rotatable from 0° to 90° for opening and closing operation comprising atleast two parts, a first part (2) having an inverted 'L' configuration with a hole (6) in short arm end and a square shaped frame structure connected at corner (3) at the long arm end and a second part (7) having a plurality of holes (8,16) at one member and a circular shape frame structure (9) at the other end; the square shaped frame structure (3) of the first part (1) is insertable to a square shaped spindle (4) of the valve (5); the circular frame structure (9) of second part (7) consisting of two circular halves (10,11) which are mountable on the pipe (12) by means of rigid fasteners (13,14) and the hole (6) of first part (2) and the hole (16) of second part (7) are locked by means of a locking pad (15) and the hole (17) of first part (2) is fastened with the hole (8) of second part (7) by means of a fastener characterised in operating the valve (5) either in full opening condition or in full closing condition.

Full Text	FIELD OF THE INVENTIQN The present invention generally relates to a locking arrangement. More particularly, the present invention relates to an iinproved locking device for plug valve applicable to industrial use. BACKGROUND OP THE INVBNTIQN In typical steel plants or integrated Engineering industry, the flow of liquid or gases are normally canried out by using tulutar section means. The restriction of flow of fluid is done by providing different types of valves like gate valve, ball valve, plug valve etc on the path of fluid flow in the pipeline in the system. Some times it is required to maintain the position of the valve, either opening or closing in the process specially while doing any maintenance work. There are some Engineering and manufacturing plants who handle different types of poisonous gases or liquids in their process. They have to take special cane and security in respect of their flowability in the system. There are some flowing medium that may the used at very high temperature or pressure also and this type of process is involved many potential hazards. In such cases, it is required to positively isolate the system. The purpose of positive isolation is to ensure the prevention of injury to the personnel or damage of equipment or dangerous occurrences during repair and maintenance of equipment or system. Present invention is a simple mechanism which does not allow manually operated ball valve and plug valve or any valve with 90 degree rotation for full opening and closing to rotate in any direction when placed in proper position. This can be operated from the valve rotating arrangement. OBJECTS OP THB INVENTION It is therefore, an obgect of the present invention to propose a locking device for plug gate which ensures the security and safety of the flowing mediumu Another object of the present invention is to propose a locking device for plug gate which abstrains from manually operation of the plug valve. A further object of the present invention is to propose a locking device for plug gate which ensures simplicity in operation mechanism. A still further object of the present invention is to propose a locking device for plug gate which arrests the theft if valuable liquid flowing through it. SUMMARY OP THE PRESENT INVENTION The present invention comprising of atleast two individual parts, first part is a inverted 'L' shape member connected at a comer point of a square shaped frame structure at one end insertable in the square shape spindle of the plug valve and other end of inverted 'L' shape part having a hole trough which a latch of the lock can the fastened. The second part having a hole at one end and other end having a circular frame structure by joining two circular halves which are mounted over a cylindrical pipe and fastened by nuts and bolts and sealed. According to the requirement for opening or closing of the valve, the holes of two parts are taken together and locked them by entering a latch of a lock through these two holes. By this locking arrangement a manually operated ball valve and plug valve of any size can be locked at fully closed position or at fully opened position. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS Fig. 1 - shows a schematic diagram of a plug valve mounted with the locking device. Fig.2 - shows a schematic diagram of the individual parts of the locking device. DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION As shown in Fig.2, the improved locking fixture (1) for valves comprising of at least two parts, a movable and detachable first part (2) is provided with a inverted 'L' shaped member. At one end of the long arm of first part having a square shaped frame structure (3) insertable in the square shaped spindle (4) of valve (5) which enable the valve opening or closing by rotating the first part form 0° (Zero degree) to 90° (Ninety degree) in clockwise or anticlockwise direction. The other end of the first part has a hole (6) in the short arm. A fixed second part (7) having a plurality of holes (8,16) at one member and the other end is provided with a circular frame structure (9) by joining two circular halves (10, 11) which are mounted over a cylindrical pipe (12) and fastened by nut and bold (13,14) and sealed. At any opening or closing position of the valve, square frame (3) of first part (2) is inserted into a spindle (4) of valve (5) and the hole (6) of first part is taken together with the hole (16) of second part (7) and locked by means of a locking pad (15) as shown in assemble condition in Fig. 1. This fixture is operatable in all types of marketable gate valve, plug valve and ball valve wherein the opening and closing are performed by 90° rotation of gate and possess a square shaped spindle and the fixture can be adapted in any size of pipe diameter. WE CLAIM 1. A locking fixture for valves provided with a square shaped spindle rotatable from 0° to 90° in clockwise or anticlockwise for opening and closing operation comprising: - at least two parts, a movable and detachable first part (2) having an inverted 'L' configuration with a hole (6) in short arm end and a square shaped frame structure connected at comer (3) at long arm end and a fixed second part (7) having a plurality of holes (8,16) at one member and a circular shaped frame structure (9) at the other end that can be adapted in any size of pipe diameter; - the square shaped frame structure (3) of the first part (1) is insertable to a square shaped spindle (4) of the valve (5); the circular frame structure (9) of second part (7) consisting of two circular halves (10,11) which are mountable on the pipe (12) by means of rigid fasteners (13,14); and - the hole (6) of first part (2) and the hole (16) of second part (7) are locked by means of a locking pad (15) and the hole (17) of first part (2) is fastened with the hole (8) of second part (7) by means of a fastener. characterised in operating the valve (5) either in full opening condition or in full closing condition wherein the said fixture is operatable in all types of marketable gate valve, plug valve and ball valve where the opening or closing are performed by 90 degree rotation of gate and possess a square shaped spindle. 2. The locking fixture as claimed in claim 1 wherein the parts (2, 7) are made of steel materials. 3. The locking fixture as claimed in claim 1 wherein any marketable lock pad can be accommodated. The present invention relates to a locking device for valves provided with a square shaped spindle rotatable from 0° to 90° for opening and closing operation comprising atleast two parts, a first part (2) having an inverted 'L' configuration with a hole (6) in short arm end and a square shaped frame structure connected at corner (3) at the long arm end and a second part (7) having a plurality of holes (8,16) at one member and a circular shape frame structure (9) at the other end; the square shaped frame structure (3) of the first part (1) is insertable to a square shaped spindle (4) of the valve (5); the circular frame structure (9) of second part (7) consisting of two circular halves (10,11) which are mountable on the pipe (12) by means of rigid fasteners (13,14) and the hole (6) of first part (2) and the hole (16) of second part (7) are locked by means of a locking pad (15) and the hole (17) of first part (2) is fastened with the hole (8) of second part (7) by means of a fastener characterised in operating the valve (5) either in full opening condition or in full closing condition.

Full Text

FIELD OF THE INVENTIQN
The present invention generally relates to a locking arrangement.
More particularly, the present invention relates to an iinproved locking
device for plug valve applicable to industrial use.
BACKGROUND OP THE INVBNTIQN
In typical steel plants or integrated Engineering industry, the flow of
liquid or gases are normally canried out by using tulutar section means.
The restriction of flow of fluid is done by providing different types of
valves like gate valve, ball valve, plug valve etc on the path of fluid
flow in the pipeline in the system. Some times it is required to maintain
the position of the valve, either opening or closing in the process
specially while doing any maintenance work. There are some
Engineering and manufacturing plants who handle different types of
poisonous gases or liquids in their process. They have to take special
cane and security in respect of their flowability in the system. There
are some flowing medium that may the used at very high temperature or
pressure also and this type of process is involved many potential
hazards. In such cases, it is required to positively isolate the system.
The purpose of positive isolation is to ensure the prevention of injury
to the personnel or damage of equipment or dangerous occurrences
during repair and maintenance of equipment or system. Present
invention is a simple mechanism which does not allow manually
operated ball valve and plug valve or any valve with 90 degree rotation
for full opening and closing to rotate in any direction when placed in
proper position. This can be operated from the valve rotating
arrangement.
OBJECTS OP THB INVENTION
It is therefore, an obgect of the present invention to propose a locking
device for plug gate which ensures the security and safety of the
flowing mediumu
Another object of the present invention is to propose a locking device
for plug gate which abstrains from manually operation of the plug valve.
A further object of the present invention is to propose a locking device
for plug gate which ensures simplicity in operation mechanism.
A still further object of the present invention is to propose a locking
device for plug gate which arrests the theft if valuable liquid flowing
through it.
SUMMARY OP THE PRESENT INVENTION
The present invention comprising of atleast two individual parts, first
part is a inverted 'L' shape member connected at a comer point of a
square shaped frame structure at one end insertable in the square
shape spindle of the plug valve and other end of inverted 'L' shape part
having a hole trough which a latch of the lock can the fastened. The
second part having a hole at one end and other end having a circular
frame structure by joining two circular halves which are mounted over
a cylindrical pipe and fastened by nuts and bolts and sealed. According
to the requirement for opening or closing of the valve, the holes of two
parts are taken together and locked them by entering a latch of a lock
through these two holes. By this locking arrangement a manually operated
ball valve and plug valve of any size can be locked at fully closed position or
at fully opened position.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Fig. 1 - shows a schematic diagram of a plug valve mounted with the locking
device.
Fig.2 - shows a schematic diagram of the individual parts of the locking
device.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF
THE INVENTION
As shown in Fig.2, the improved locking fixture (1) for valves comprising of
at least two parts, a movable and detachable first part (2) is provided with a
inverted 'L' shaped member. At one end of the long arm of first part having
a square shaped frame structure (3) insertable in the square shaped spindle
(4) of valve (5) which enable the valve opening or closing by rotating the
first part form 0° (Zero degree) to 90° (Ninety degree) in clockwise or
anticlockwise direction. The other end of the first part has a hole (6) in the
short arm. A fixed second part (7) having a plurality of holes (8,16) at one
member and the other end is provided with a circular frame structure (9) by
joining two circular halves (10, 11) which are mounted over a cylindrical
pipe (12) and fastened by nut and bold (13,14) and sealed. At any opening or
closing position of the valve, square frame (3) of first part (2) is inserted into
a spindle (4) of valve (5) and the hole (6) of first part is taken together with
the hole (16) of second part (7) and locked by means of a locking pad (15) as
shown in assemble condition in Fig. 1. This fixture is operatable in all types
of marketable gate valve, plug valve and ball valve wherein the opening and
closing are performed by 90° rotation of gate and possess a square shaped
spindle and the fixture can be adapted in any size of pipe diameter.
WE CLAIM
1. A locking fixture for valves provided with a square shaped spindle
rotatable from 0° to 90° in clockwise or anticlockwise for opening and
closing operation comprising:
- at least two parts, a movable and detachable first part (2) having
an inverted 'L' configuration with a hole (6) in short arm end
and a square shaped frame structure connected at comer (3) at
long arm end and a fixed second part (7) having a plurality of
holes (8,16) at one member and a circular shaped frame
structure (9) at the other end that can be adapted in any size of
pipe diameter;
- the square shaped frame structure (3) of the first part (1) is
insertable to a square shaped spindle (4) of the valve (5);
the circular frame structure (9) of second part (7) consisting of
two circular halves (10,11) which are mountable on the pipe
(12) by means of rigid fasteners (13,14); and
- the hole (6) of first part (2) and the hole (16) of second part (7)
are locked by means of a locking pad (15) and the hole (17) of
first part (2) is fastened with the hole (8) of second part (7) by
means of a fastener.
characterised in operating the valve (5) either in full opening
condition or in full closing condition wherein the said fixture is
operatable in all types of marketable gate valve, plug valve and
ball valve where the opening or closing are performed by 90
degree rotation of gate and possess a square shaped spindle.
2. The locking fixture as claimed in claim 1 wherein the parts (2, 7) are
made of steel materials.
3. The locking fixture as claimed in claim 1 wherein any marketable
lock pad can be accommodated.

The present invention relates to a locking device for valves provided with a square shaped spindle rotatable from 0° to 90° for opening and closing operation comprising atleast two parts, a first part (2) having an inverted 'L' configuration with a hole (6) in short arm end and a square shaped frame structure connected
at corner (3) at the long arm end and a second part (7) having a plurality of holes (8,16) at one member and a circular shape frame structure (9) at the other end; the square shaped frame structure (3) of the first part (1) is insertable to a square shaped spindle (4) of the valve (5); the circular frame structure (9) of
second part (7) consisting of two circular halves (10,11) which are mountable on the pipe (12) by means of rigid fasteners (13,14) and the hole (6) of first part (2) and the hole (16) of second part (7) are locked by means of a locking pad (15) and the hole (17) of first part (2) is fastened with the hole (8) of second part (7) by means of a fastener characterised in operating the valve (5) either in full opening condition or in full closing condition.

Documents:

01288-kol-2006 abstract.pdf

01288-kol-2006 assignment.pdf

01288-kol-2006 claims.pdf

01288-kol-2006 correspondenceothers.pdf

01288-kol-2006 description(complete).pdf

01288-kol-2006 drawings.pdf

01288-kol-2006 form1.pdf

01288-kol-2006 form2.pdf

01288-kol-2006 form3.pdf

01288-kol-2006-correspondence-1.1.pdf

01288-kol-2006-form-9.pdf

1288-KOL-2006-ABSTRACT-0.1.pdf

1288-KOL-2006-ABSTRACT-1.1.pdf

1288-KOL-2006-CANCELLED DOCUMENT.pdf

1288-KOL-2006-CLAIMS-0.1.pdf

1288-KOL-2006-CLAIMS-1.1.pdf

1288-kol-2006-correspondence.pdf

1288-KOL-2006-DESCRIPTION COMPLETE-1.1.pdf

1288-KOL-2006-DESCRIPTION COMPLETE.pdf

1288-KOL-2006-DRAWINGS-1.1.pdf

1288-KOL-2006-DRAWINGS.pdf

1288-kol-2006-examination report.pdf

1288-KOL-2006-FORM 1-1.1.pdf

1288-kol-2006-form 18.pdf

1288-KOL-2006-FORM 2-1.1.pdf

1288-kol-2006-form 3.pdf

1288-kol-2006-form 9.pdf

1288-kol-2006-gpa.pdf

1288-kol-2006-granted-abstract.pdf

1288-kol-2006-granted-claims.pdf

1288-kol-2006-granted-correspondence.pdf

1288-kol-2006-granted-description (complete).pdf

1288-kol-2006-granted-drawings.pdf

1288-kol-2006-granted-examination report.pdf

1288-kol-2006-granted-form 1.pdf

1288-kol-2006-granted-form 18.pdf

1288-kol-2006-granted-form 2.pdf

1288-kol-2006-granted-form 3.pdf

1288-kol-2006-granted-gpa.pdf

1288-kol-2006-granted-letter patent.pdf

1288-kol-2006-granted-reply to examination report.pdf

1288-kol-2006-granted-specification.pdf

1288-KOL-2006-OTHERS.pdf

1288-KOL-2006-PETITION UNDER RULE 137.pdf

1288-KOL-2006-REPLY TO EXAMINATION REPORT.pdf

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Patent Number

246936

Indian Patent Application Number

1288/KOL/2006

PG Journal Number

12/2011

Publication Date

25-Mar-2011

Grant Date

22-Mar-2011

Date of Filing

28-Nov-2006

Name of Patentee

TATA STEEL LIMITED

Applicant Address

RESEARCH AND DEVELOPMENT AND SCIENTIFIC SERVICES DIVISION, JAMSSHEDPUR

Inventors:

#	Inventor's Name	Inventor's Address
1	SIBABRATA KAR	COKE PLANT TATA STEEL LIMITED, JAMSHEDPUR 831 001
2	A. K.CHODHURY	COKE PLANT TATA STEEL LIMITED, JAMSHEDPUR 831 001

PCT International Classification Number

F 16 K

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA