Claims:INVENTION WE CLAIM
1) A ‘Threaded Pipe Coupling with Locking Mechanism’ comprises of: a pipe
(10) have threads (11) on outer surface in the joining length; a coupler (19)
having threads (20) & teeth (21) in inner surface; A sealing ring (22); A nut
(12) having threads (13) at inner surface & ratchet (14) on its outer surface.
2) The ‘Threaded Pipe Coupling with Locking Mechanism’ as claimed in claim
1, wherein said teeth (21) are provided at both ends of the coupler (19)
wherein threads (20) are placed in between them.
3) The ‘Threaded Pipe Coupling with Locking Mechanism’ as claimed in claim
1, wherein said sealing ring (22) placed inside the coupler.
4) The ‘Threaded Pipe Coupling with Locking Mechanism’ as claimed in
claim 1, wherein minimum diameter of the said teeth (21) are larger than the
maximum diameter of the threads (20).
5) The ‘Threaded Pipe Coupling with Locking Mechanism’ as claimed in claim
1, wherein said nut (12) having threads (13) at inner surface & ratchet (14)
on outer surface, typically said ratchet have hump (17) on it.
6) The ‘Threaded Pipe Coupling with Locking Mechanism’ as claimed in claim
1, wherein said nut (12) is made from a polymer material selected from a
group consisting of polyethylene, polypropylene, polystyrene, polyvinyl
chloride and polyester.
7) The ‘Threaded Pipe Coupling with Locking Mechanism’ as claimed in claim
1, wherein said nut (12) have at least two steps on its outer surface, wherein
smaller step (15) fitted inside the coupler to activate ratchet mechanism &
larger step (16) held by wrench during tightening/opening.
8) The ‘Threaded Pipe Coupling with Locking Mechanism’ as claimed in claim
1, wherein said larger step have provision (18) to get held by wrench.
9) A method of assembling & dismantling the ‘Threaded Pipe Coupling with
Locking Mechanism’ comprising the step of
A nut (12) screw on the threads (11) of the pipe; the pipe (10) along with nut
(12), screw in inner threads (20) of the coupler (19) in a manner that pipe
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(10) completely tighten inside the coupler (19), wherein end (24) of the pipe
press the sealing ring (22) & ensure the leak proof joint between pipe (10) &
coupler (19); to fix the rotational movement between pipe (10) & coupler
(19), nut (12) screwed up tightly on the pipe (10) against the coupler (19),
which further fix the pipe (10) & held it tightly in its position, moreover
rotational movement of the nut (12) locked by ratchet (14) & teeth (21), for
dismantling the pipe joint, a wrench fix on the nut (12) which squeeze the
ratchet (14) & enable the rotation of the nut for opening.
10)The ‘Threaded Pipe Coupling with Locking Mechanism’ as substantially
described with reference to the accompanying drawing. , Description:FIELD OF THE INVENTION
The present invention generally relates to pipe joints & more particularly it relates
to the development threaded pipe joints, which has designed to fix pipe movement
in rotational & axially manner.
BACKGROUND
The joint system employed to connect the two pipes mostly held by coupler, these
coupler interlinked the two pipes through thread mechanism, threaded joints are
very reliable in axial load, but these joint cannot be satisfied the torsion load
condition. The bores well, wherein start/stop operation of the motor transfer torsion
load to the pipe joints, so it is very difficult to employ the thread enable pipe joints.
Many attempts have been made in the past for designing a pipe joint capable to
sustain axial & torsion load condition, but the past designs are failed to meet the
reliable & durable pipe joints.
It is very common practice in pipe joints to provide threads to interlink the pipe &
coupler, wherein grub screw employed in coupler & pipe to cease the rotation with
respect to one another, but it also observed that any type of holes/slots in the
coupler generate stress concentration around it & leads to damage/ distortion of the
coupler, further these process increases number of operation on site. It is also
noticed that another most common practice for pipe locking is to screwing check
nut against the coupler to fix the pipe in its position, but this is not effective over a
period of time due to vibration & jerks, the above condition demands for the
development of new invention, which is capable to overcome from the above
problem.
PRIOR ARTS AVAILABLE UNDER PATENT SEARCH
Such a joint disclosed in US 8246084 B2. Said invention relates to a threaded pipe
(11) and coupler (5) made of polyvinyl chloride, the coupler (5) comprising two
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coupling ends having inner square-shaped threading (3, 14), each receiving a pipe
end (4, 11) having an outer square-shaped threading, a sealing ring (2, 13) being
provided between each coupling end of an inner surface of the coupler (5) and an
outer surface of the corresponding pipe end (4, 11); a groove (10), being formed on
the inner surface of the coupler (5), and co-operating with a part of the outer
surface of the pipe end after the threading, when the pipe (11) is threadingly
coupled in the coupler (5), to form a tangential hole (42) between the outer surface
of the pipe (11) and the inner surface of the coupler (5) with the groove made on
the outer surface of the coupler aligning with a groove of first pipe, wherein a wire
lock (41) is inserted in the tangential hole (42) to lock the coupling of the coupler
(5) with the end of the pipe (11).
Such a joint disclosed in US 7963569 B2. Said invention relates to a novel locking
pipe joint for use in fluid-carrying pipe systems is described. The locking pipe joint
of the present invention provides a system of joints that will withstand the stresses
and forces imposed on a pipe system carrying fluids. The joint is constructed on a
push-fit principle. Sealing rings are used to make the joint leak-proof. Splines are
provided to sustain the longitudinal forces imposed on the joint, and longitudinal
ribs are provided on the outer surface of the joined pipes to withstand the torsional
loads. The joint is simple in its construction, easy to assemble in field and cost
effective.
Such a joint disclosed in US 7845686 B2. Said invention relates to a restrained
pipe joining system is shown comprising male and female ends each having
aligned circumferential grooves which form a canal for passage of a locking key
strap. During manufacture, the female belled end is sequentially formed over a
Rieber style gasket and then over a ring shaped casing member having an inner
circumferential groove formed on its inner circumferential surface. Preferably, the
ring shaped casing has circumferentially spaced teeth that act as a pipe stop in
cooperation with an outer circumferential groove on the male spigot to index the
pipes to be coupled.
The present invention is based on PVC pipe which are free from rust & oxidation
caused by air & water, hence it is most widely used in water supply system,
agriculture & ground water lowering. The present invention designed in a manner
that it does not generate stress concentration at any particular section of the
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coupler, hence stress distribution is uniform across the coupler which make it
durable & strong pipe joint.
OBJECT OF THE INVENTION
It is a primary object of the present invention to make a detachable locking joint.
It is further object of the present invention to lock the thread joint of pipe &
coupler.
It is another object of the present invention to make a joint which can easily be
unlock on site.
It is still another object of the present invention to make a thread joint can bear
axial load & sustain in torsion load condition.
It is further object of the present invention to make coupler with uniform stress
distribution.
It is still further object of the present invention to make a durable pipe joint.
SUMMARY
The present invention relates to threaded pipe joint with locking mechanism,
threads of the joint allow it to bear axial load & locking mechanism prevents
opening of threads during rotational jerk or torsion load condition.
The present invention ‘Threaded Pipe Coupling with Locking Mechanism’
comprises of: a pipe (10) have threads (11) on outer surface in its joining length; a
coupler (19) having threads (20) & teeth (21) in inner surface; A sealing ring (22);
A nut (12) having threads (13) at inner surface & ratchet (14) on its outer surface.
According to the invention said teeth (21) are provided at both ends of the coupler
(19) wherein threads (20) are placed in between them.
According to the invention said nut (12) has threads at inner surface & ratchet (14)
on outer surface.
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According to the invention the method of assembling & dismantling comprising
the step of: A nut (12) screw on the threads (11) of the pipe; the pipe (10) along
with nut (12) screw in inner threads (13) of the coupler in a manner that pipe
completely tighten inside the coupler (19), wherein end of the pipe (24) press the
sealing ring (22). To fix the rotational movement between pipe (10) & coupler
(19), a nut (12) screwed up tightly on the pipe (10) against the coupler (19), which
further fix the pipe (10) & held it tightly in its position, moreover rotational
movement of the nut (12) locked by ratchet (14) & teeth (21). To dismantle the
pipe joint, a wrench fix on the nut (12) which squeeze the ratchet (14) & enable the
rotation of the nut for opening.
BRIEF DESCRIPTION OF THE DRAWING
Under this section of the specification a brief description of all the relevant
drawing shall be made with reference to the invention described in the description
part
FIGURE – 1 Shows Exploded View of ‘Threaded Pipe Coupling with Locking
Mechanism’
FIGURE – 2 Shows Sectional View ‘Threaded Pipe Coupling with Locking
Mechanism
FIGURE – 3 Shows 3D view of Nut
FIGURE – 4 Shows Detail view of Ratchet Mechanism of Nut
DETAIL DESCRIPTION OF THE INVENTION
In accordance with the present invention ‘Threaded Pipe Coupling with Locking
Mechanism’ designed to sustain axial load & its ratchet mechanism along with
check nut, prevents nut to get loosen during rotational jerk or torsion load
condition.
The present invention comprises of: a pipe (10) have threads (11) on outer surface
of its joining length; a coupler (19) having threads (20) & teeth (21) in inner
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surface; A sealing ring (22); A nut (12) having threads (13) at inner surface &
ratchet (14) on its outer surface.
According to the invention said teeth (21) are provided at both ends of the coupler
(19) wherein threads (20) are placed in between them. The minimum diameter of
the said teeth (21) is larger than the maximum diameter of the threads (20).
In accordance with present invention said sealing ring (22) placed inside the
coupler (19) in a manner that it lays between both sides of threads (20) and have
provision (23) for resting the pipe (10).
In accordance with the present invention said nut (12) has threads (13) at inner
surface & ratchet (14) on outer surface wherein said ratchet have hump (17) on it.
The nut (12) has at least one steps on its outer surface, typically ratchet (14) on
smaller step (15) extruded up to larger step (16) of the nut. The nut (12) is made
from a polymer material selected from a group consisting of polyethylene,
polypropylene, polystyrene, polyvinyl chloride and polyester.
In joining position pipe completely screwed on coupler (19) & end (24) of the pipe
press against the sealing ring (22) to prevents leakage, whereas smaller step (15) of
the nut get fitted inside the scope (25) of the coupler & pressed against it, further
rotation of the nut (12) increases axial pressure on threads of the pipe (10) &
coupler (19), moreover this axial pressure fix the pipe (10) in its position.
The smaller step (15) get fitted inside the coupler (19) and activate ratchet
mechanism & larger step (16) stay out from scope (25) of the coupler & get held
by wrench during tightening/opening of the nut (12), moreover the larger step has
provision (18) to get hold by wrench.
According to the invention method of assembling & dismantling the present
invention comprising the step of
The nut (12) screw on the threads (11) of the pipe; the pipe (10) along with nut
(12), screw in inner threads (20) of the coupler in a manner that pipe (10)
completely tighten inside the coupler (19), wherein end of the pipe (26) press
against the sealing ring (22) & ensure the leak proof joint between pipe & coupler;
to fix the rotational movement between pipe (10) & coupler (19), nut (12) screwed
up tightly on the pipe against the coupler, which further fix the pipe (10) & held it
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tightly in its position, moreover rotational movement of the nut (12) locked by
ratchet (14) & teeth (21). To dismantle the pipe joint, a wrench fix on the nut
wherein said hump (17) squeeze the ratchet (14) & enable the rotation of the nut
for opening.
The ‘Threaded Pipe Coupling with Locking Mechanism’ as substantially described
with reference to the accompanying drawing.