FORM 2
THE PATENT ACT 1970
&
The Patents Rules, 2003
PROVISIONAL SPECIFICATION (See section 10 and rule 13)
1. TITLE OF THE INVENTION:
"Radiator Hose with Integrated Drain Plug"
2. APPLICANT:
(a) NAME: TATA TOYO Radiator Ltd.
(b) NATIONALITY: Indian Company registered under
the provisions of the Companies Act,1956
(c) ADDRESS: Survey No. 235/245, Hinjewadi,
Taluka - Mulshi, Pune-411027
3. PREAMBLE TO THE DESCRIPTION:
COMPLETE
The following specification particularly describes the invention and the manner in which it is to be performed.

Radiator Hose with Integrated Drain Plug
Field of invention
Present invention relates to a radiator having fluid as coolant, and more particularly, to a coolant draining assembly for the radiator.
Background of the invention
Automobile manufacturers require scheduled engine coolant changes in order to maintain warranty coverage. Following the warranty period, engine coolant changes are still recommended on a specific schedule to maintain optimum condition of the cooling system.
Earlier there was only one way to drain out the coolant/water from engine cooling system completely i.e. with the help of drain plug. The drain plug is normally placed at the bottom most location in the radiator, particularly in bottom tank in case of down flow radiators.
There are many advantages of coolant replacement/draining in cooling system. The coolant replacement/draining helps in cleaning the radiators quickly and safely, removes rust, sludge and scale deposits, restores coolant flow and heat transfer efficiency, provides the best means for a factory recommended cooling system service, flushes contaminated fluid from the entire cooling system including the radiator, Engine block, heater core and hoses and eliminates cross-contamination of engine coolants.

However, it is seen that engine blocks, heater cores, hoses and water pumps are not typically drained during a traditional cooling system fluid drain and fill. Specifically, up to 60% of the used contaminated fluid can remain in the system.
Just like motor oil and transmission fluid, engine coolant deteriorates over time and forms damaging scale and deposits as contaminants. The contaminants are difficult to remove when much of the old fluid remains in the cooling system. The contaminant stays in the cooling system, slowly deteriorating internal components. Also as a vehicle ages, the likelihood of engine cooling system failure increases.
A conventional drain arrangement fill does a little to address these problems as a large quantity of the old coolant is left behind. In addition, the deposits and corrosion debris left behind seriously impairs the proper functions of the system.
Drawbacks in prior art
1. By means of existing coolant drain arrangement, complete coolant draining from radiator is not possible.
2. More human efforts are required to access drain area i.e. drain plug during coolant draining operation from radiator.
Object of invention:
An object of present invention is to provide a radiator coolant draining system to ensure effectiveness of coolant draining function.
Yet another object of present invention is to provide compact design for radiator coolant draining system.

Summary of the invention
Accordingly, the present invention provides a hose with integrated drain plug assembly for draining coolant from a radiator, the hose with integrated drain plug assembly comprising:
a hose connecting a radiator outlet pipe with an engine inlet;
a reducer pipe capable of being molded inside a portion of the hose;
a drain plug capable of removably engaging the reducer pipe by means of threading provided thereon, the threading extending out through an opening provided on a lower portion of the hose; and
a rubber casing provided on outer portion of the hose for improving burst pressure resistance,
wherein the hose, the reducer pipe, the drain plug and the rubber casing are assembled through molding operation in die.
Typically, wherein beading is provided on extreme ends of the reducer pipe to restrict the slippage of the hose over the reducer pipe.
Typically, wherein grooves are provided over the drain plug enginemen area on the reducer pipe for strengthening as hose material is filled inside the grooves.
Brief description of drawings
Figure 1A shows a schematic exploded view of a radiator hose with an integrated drain plug assembly in accordance with the present invention;
Figure 1B shows a perspective exploded view of a radiator hose with an integrated drain plug assembly in accordance with the present invention;

Figure 2 shows a schematic assembled view of the radiator hose with the integrated drain plug assembly of figure 1 in accordance with the present invention;
Figure 3 shows perspective view of a reducer pipe of the radiator hose with the integrated drain plug assembly in accordance with the present invention;
Figure 4A and 4B shows the radiator hose with the integrated drain plug assembly assembled on a radiator in accordance with the present invention; and
Figure 5 shows a functional block diagram of engine cooling system with the position of the radiator hose with an integrated drain assembly thereon.
Detail description of the invention
The foregoing objects of the invention are accomplished and the problems and shortcomings associated with prior art techniques and approaches are overcome by the present invention described in the present embodiment.
Accordingly, the present invention provides a radiator coolant draining device to ensure effectiveness of coolant draining function. Further, present invention provides a compact design for radiator coolant draining device.
This present invention is illustrated with reference to the accompanying drawings, throughout which reference numbers indicate corresponding parts in the various figures. These reference numbers are shown in bracket in the following description.

Referring now to figure 1A and 1B, there is shown an exploded view of a radiator hose with an integrated drain plug assembly in accordance with the present invention. Specifically, figure 1A and 1B shows the radiator hose with an integrated drain plug assembly (100) (hereinafter referred as the "assembly (100)")- The assembly (100) includes a hose (10), a reducer pipe (20), a drain plug (30) and a rubber casing (40).
The hose (10) connects a radiator outlet pipe with an engine inlet. Specifically, one end of the hose (10) is connected to an outlet pipe (120) on a bottom tank (130) of the radiator (200) and another end of the hose (10) is connected to an inlet (140) of a water pump (not shown) as shown in figure 4A. The hose (10) is made of material selected from EPDM 60-70 IRHD IS: 2765, NBR (Acrylonitrile Butadiene Rubber) and silicone rubber. Further, the hose (10) is manufactured by a vulcanization process.
The hose (10) includes the reducer pipe (20) molded inside a portion of the hose (10). The reducer pipe (20) is designed to match with hose (10) profile so that it can be easily molded inside the hose (10). Specifically, the reducer pipe (20) includes beading (24) provided on extreme ends of the reducer pipe (20) to restrict the slippage of the hose (10) over the reducer pipe (20). More specifically, the beading is 3 mm thick. Furthermore, grooves (26) provided over the drain plug engaging area on the reducer pipe (20) for strengthening as hose material is filled inside the grooves (26). The reducer pipe (20) is made of one of 30% GF Nylon 66 (Glass filled Nylon 66), and 20%- GF PP (Glass filled polypropylene). Further, the reducer pipe (20) is produced by extrusion blow molding process. The reducer pipe (20) engages the drain plug (30).

Specifically, the drain plug (30) is capable of removably engaging the reducer pipe (20) by means of threading (22) provided thereon. Further, M l4x1.0 threading (22) extends out through an opening (12) provided on a lower portion of the hose (10). The drain plug (30) is made of material selected from acetyl copolymer, 30% GF PA66, and free cutting brass.
The rubber casing (40) is provided on outer portion of the hose (10) for improving burst pressure resistance. Specifically, the rubber casing (40) provided over the portion of the hose (10) has thickness of 3mm which helps in improving burst pressure resistance of the assembly (100). The rubber casing (40) has same material composition as that of the hose (10).
The hose (10), the reducer pipe (20), the drain plug (30) and the rubber casing (40) are assembled through molding operation in die to form the hose with an integrated drain plug assembly (100).
The assembly (100) is mounted on the radiator outlet pipe with the help of metal tightening clips. The assembly (100) is designed to withstand engine cooling system.
Advantages of present invention:
1. Drain plug feature in down flow radiator tanks can be eliminated.
2. Cost saving along with development time.
3. 100% coolant draining can be ensured.
4. Less human efforts are required with easy access to drain area.
The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not

intended to be exhaustive or to limit the present invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, to thereby enable others skilled in the art to best utilize the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omission and substitutions of equivalents are contemplated as circumstance may suggest or render expedient, but such are intended to cover the application or implementation without departing from the spirit or scope of the present invention.

We Claim
1. A hose with integrated drain plug assembly for draining coolant from
a radiator, the hose with integrated drain plug assembly comprising:
a hose connecting a radiator outlet pipe with an engine inlet;
a reducer pipe capable of being molded inside a portion of the hose;
a drain plug capable of removably engaging the reducer pipe by means of threading provided thereon, the threading extending out through an opening provided on a lower portion of the hose; and
a rubber casing provided on outer portion of the hose for improving burst pressure resistance,
wherein the hose, the reducer pipe, the drain plug and the rubber casing are assembled through molding operation in die.
2. The hose with integrated drain plug assembly as claimed in claim 1, wherein beading is provided on extreme ends of the reducer pipe to restrict the slippage of the hose over the reducer pipe.
3. The hose with integrated drain plug assembly as claimed in claim 1, wherein grooves are provided over the drain plug enginemen area on the reducer pipe for strengthening as hose material is filled inside the grooves.