FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003
COMPETE SPECIFICATION
(See Section 10 and Rule 13)
HOSE TUBE ASSEMBLY AND METHOD OF MANUFACTURING THEREOF
FLEETGUARD FILTERS PRIVATE LIMITED
An Indian Company having registered address at: 136, Park Marina Road, Baner, Pune - 411 045, MH, India
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

TECHNICAL FIELD
The present application relates generally to hose and tube assembly for automotive application and particularly to methods of making a hose tube assembly having seal proof joints therebetween.
BACKGROUND
Air intake systems are used to provide outside air into the automobile filters which clean the dirty outside air and subsequently clean air is fed to engines, thereby improving efficiency of combustion. Generally, air intake systems have a snorkel to suck in outside air and provide to the automobile filters. The snorkel, as mentioned, is a long tubular structure and present on the outer periphery of the automobile so as to enable it to suck in larger amount of air. The snorkel is connected, through air intake tubes, to the automobile filters. Further, there are air intake tubes from the automobile filters to the turbochargers and the engine of the automobiles. The said air intake tubes, generally made of plastic, are often not straight walled owing to structural and efficiency designs of the automobiles and hence it is requires that bends and curves in the air intake tubes are handled and/or connected through hose joints between the two ends of the curved/ bended air intake tube. The two ends of the air intake tubes, in case of bends or curve, are welded together with a hose joint in between. The hose joint should be fitted perfectly so that the joint between the two ends of air intake tubes is air-tight and no air flows in between the joints.
Conventionally, the air intake tube and hose joints are clamped together using T-bolt clamps. Further, the hose joint is fitted using induction welding of the two ends of air intake tubes. Moreover, in certain cases, various gluing methods are used to join the two ends of air intake tubes

with the hose joint in between. In various other circumstances, a gasket is used along with the hose joint to maintain airtight fitting wherein the gasket fits on the outer diameter of the air intake tubes and the inner diameter of the hose joint. Further, in many cases, a circular metal wire is used for fitting the hose joint to the air intake tube in order to ensure air-tight fitting.
Traditionally induction welding of two ends of the bended portion of air intake tubes results in gaps in joints and thereby introducing air flow into the air—intake tubes. Use of gluing technologies is also not free from defects and results in the two ends being separated often as a result of wear and tear. Further, use of gasket in certain methods, as mentioned above, amounts to addition of extra part and subsequently cost of the entire system. The metal wire as discussed above, although promising, but often leads to imperfect joints. This is primarily due to the fact that the metal wire used for welding is perfectly circular in shape. However, the two ends of the air intake tube is not always uniformly circular owing to design constraints. Hence, often, during welding of two ends of the air intake tube using the circular metal wire, there are positions on the circumference of the air intake tube where the ends of the air intake tube might not perfectly align with the circular metal wire and consequently the hose joint, leading to imperfect joints.
Therefore, in light of the above-mentioned shortcomings of the conventional methods of connecting air intake tubes using hose joints, it is highly desirable to have a method for induction welding of air intake tubes using a hose joint and ensuring perfect joining and air- tight fitting.

SUMMARY
Embodiments of the present disclosure present technological improvements as solutions to one or more of the above-mentioned technical problems recognized by the inventor(s) in conventional systems.
The present invention relates to novel method of seal-proof joining of two or more tubes by induction welding and using a Bibby spring. The invention discloses the use of a substantially circular shape metallic wire clip with congruent crest and troughs, placed on the outer diameter of a first tube which fits on to a second tube and welded using induction heating. The joint is then pressed in order to perfectly join the first tube and the second thereby making the joint air-tight.
The present invention related to a novel hose tube assembly having a hose, a tube, and a metallic wire clip substantially circular in shape with congruent troughs and crests formed along its perimeter. The hose, the tube and the metallic wire clip are arranged such that the metallic wire clip is placed on an outer circumference of the tube. The hose placed over the tube in a manner such that the metallic wire clip is sandwiched between the tube and hose. Induction heating the metallic wire clip so as fuse the tube and the hose together to form an air tight joint between the hose and the tube thereby forming the hose tube assembly.
In an embodiment of the present invention the hose and the tube are made up of the same material.
In another embodiment of the present invention the outer diameter of the tube is smaller than the perimeter of the metallic wire clip.

In yet another embodiment of the present invention metallic wire clip has a sinusoidal shape formed along its perimeter.
In yet another embodiment of the present invention each of the hose and pipe are made of thermoplastic vulcanizate material.
In yet another embodiment of the present invention each of the hose and pipe are made of thermoplastic elastomer material.
The present invention provides a novel method of forming a hose tube assembly comprising the steps of placing a metallic wire clip on an outer circumference of a tube, assembling a hose on the tube such that the metallic wire clip is sandwiched between the hose and the tube, induction heating the metallic wire clip using an injection heater thereby melting parts of the tube and hose that are in physical contact with the metallic wire clip and thereby fusing the hose and tube together to form a hose tube assembly.
Additional aspects, advantages, features and objects of the present disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiments construed in conjunction with the appended claims that follow.
It will be appreciated that features of the present disclosure are susceptible to being combined in various combinations without departing from the scope of the present disclosure as defined by the below-mentioned detailed description and drawings.

BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES
The summary above, as well as the following detailed description of illustrative embodiments are better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the present disclosure is not limited to specific methods and instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale. Wherever possible, like elements have been indicated by identical numbers.
Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein:
Fig. 1 depicts a hose tube assembly claimed as per the present invention.
Fig. 2 depicts a metallic wire clip as used in the invention.
Fig. 3 is a step wise method of creating a hose and tube assembly in accordance with an embodiment of the present invention.
In the accompanying drawings, an underlined number is employed to represent an item over which the underlined number is positioned or an item to which the underlined number is adjacent. A nonunderlined number relates to an item identified by a line linking the nonunderlined number to the item. When a number is nonunderlined and accompanied by an associated arrow, the nonunderlined number is used to identify a general item at which the arrow is pointing.
It will be appreciated that the drawings illustrated herein are for representative purposes only and do not intend to limit the scope of the

present disclosure, and actual implementation of the present disclosure may be viewed substantially differently.
DETAILED DESCRIPTION
The following detailed description illustrates embodiments of the present disclosure and ways in which they can be implemented. Although some modes of carrying out the present disclosure have been disclosed, those skilled in the art would recognize that other embodiments for carrying out or practicing the present disclosure are also possible.
The present invention provides a method of seal-proof joining between a hose and a tube by means of a metal wire embedded on an outer circumference of the tube and subsequently pressing the hose on to the metallic wire clip to make the joint air-tight. The invention overcomes the limitations in the prior art by providing a single piece structure with no extra parts and perfect join for seal proof binding.
The present invention further discloses a hose tube assembly 100 comprising a tube 102 and a hose 104 wherein each the tube and the hose are tubular in shape with two ends and a hollow interior area with an inner diameter and an outer diameter, and wherein a metallic wire clip 106 is embedded on the outer circumference of one end of the tube and the hose is pressed upon the tube to form a perfect seal-proof joint.
The metallic wire clip 106 mentioned in the foregoing paragraphs is made up of resistive material and is wound into circular spring with congruent crest and troughs. In an embodiment, the metal wire is made up of nickel- chromium alloy wire, iron-chromium alloy.

Fig. 2 depicts the structure of the metallic wire clip 106 that is used for the welding joint. The circular shape with congruent crest and troughs provides for a sinusoidal structure for the metal wire and overcomes the limitations of a circular metal wire. As discussed in the foregoing paragraphs, the circular metal wire may not fit perfectly onto the outer circumference of the first hose since the outer circumference of the tube may not be perfectly circular owing to design constraints and spatial limitations. In such cases, the circular metal wire when pressed upon the hose would leave a gap in the joint which would result in air flowing into the joint and the same is highly undesirable. According to an exemplary embodiment of the present invention, the metallic wire clip 106 used for induction welding overcomes the limitation of circular metal wire by means of sinusoidal shape, arising out of congruent crest and troughs, which allows for perfect fit for the joint. Owing to the sinusoidal shape arising out of the crests and troughs the surface area of the metallic wire clip 106 is increased multifold thereby ensuring that the metallic wire clip 106 comes in contact with both, the outer circumference of the tube and the inner circumference of the hose. This takes care of the scenario where even if the first hose is not perfectly symmetrical, the metallic wire clip 106 would touch the outer circumference at least at one point through the sinusoidal curve, thereby resulting in perfect air-tight joint. The diameter of the metallic wire clip 106 is greater than that of the outer diameter of the tube and lesser than the inner diameter of the hose so as to obtain a perfect fit after induction welding. In an aspect of the present invention the metallic wire clip 106, has perfectly sinusoidal shape formed along its perimeter
In an aspect of the present invention, the metallic wire clip 106 is

stretched and assembled on the outer circumference of the tube. Subsequently, the hose is assembled over the tube through the metallic wire clip 106. Further, the metallic wire clip 106 is heated via induction heating process which results in heating of the tube and the hose. Finally, the joint is welded to form a perfect air-tight joint between the tube and the hose.
In an embodiment of the present invention, the tube 102 and the hose 104 are made up of thermoplastic vulcanizate. In another embodiment, the tube 102 and the hose 104 are made up of thermoplastic elastomer.
Fig. 3 illustrates a method 300 of making a hose and tube assembly in accordance with an embodiment of the present invention. As shown, at a first step 302 provides a first tube 102 with an open end and a hollow. At a second step 304, a metallic wire clip 106 is placed on an outer circumference of the first tube 102. At a third step 306, an open end of a hose 104 is placed over the open end of the first tube such that the metallic wire clip 106 is sandwiched between the hose and the tube. At a fourth step 308, the metallic wire clip 106 is heated using an induction heater. At a fifth and final step the heated metallic wire clip 106 melts the parts of tube 102 and hose 104 physically in contact with the metallic wire clip 106 thereby fusing the hose and tube together and forming a hose tube assembly in accordance with an embodiment of the present invention.
Any examples or illustrations given herein are not to be regarded in any way as restrictions on, limits to, or express definitions of, any term or terms with which they are utilized. Those of ordinary skill in the art will appreciate that any term or terms with which these examples or

illustrations are utilized will encompass other embodiments which may or may not be given therewith or elsewhere in the specification and all such embodiments are intended to be included within the scope of that term or terms.
The description, embodiments and figures are not to be taken as limiting the scope of the claims. It will be appreciated that features of the present disclosure are susceptible to being combined in various combinations and additional features may be introduced without departing from the scope of the present disclosure.
Modifications to embodiments of the present disclosure described in the foregoing are possible without departing from the scope of the present disclosure as defined by the accompanying claims. Expressions such as “including”, “comprising”, “incorporating”, “have”, “is” used to describe and claim the present disclosure are intended to be construed in a non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural.

We Claim:
1. A hose tube assembly comprising:
a hose, a tube, and a metallic wire clip substantially circular in shape with congruent troughs and crests formed along its perimeter; wherein the hose, the tube and the metallic wire clip are arranged such that the metallic wire clip is placed on an outer circumference of the tube;
the hose placed over the tube in a manner such that the metallic wire clip is sandwiched between the tube and hose;
induction heating the metallic wire clip so as fuse the tube and the hose together to form an air tight joint between the hose and the tube thereby forming the hose tube assembly.
2. The hose tube assembly as claimed in claim 1 wherein, the hose and the tube are made up of the same material.
3. The hose tube assembly as claimed in claim 1 wherein, the outer diameter of the tube is smaller than the perimeter of the metallic wire clip.
4. The hose tube assembly as claimed in claim 1 wherein, metallic wire clip has a sinusoidal shape formed along its perimeter.
5. The hose tube assembly as claimed in claim1 wherein, each of the hose and tube are made of thermoplastic vulcanizate material.

6. The hose tube assembly as claimed in claim1 wherein, each of the hose and tube are made of thermoplastic elastomer material.
7. A method of forming a hose tube assembly comprising the steps of: placing a metallic wire clip on an outer circumference of a tube;
assembling a hose on the tube such that the metallic wire clip is sandwiched between the hose and the tube;
induction heating the metallic wire clip using an injection heater thereby melting parts of the tube and hose that are in physical contact with the metallic wire clip and thereby fusing the hose and tube together to form a hose tube assembly.