FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10; rule 13)
1. Title of the Invention. - MECHANICAL ARRANGEMENT SUPPORTING ELECTRIC POLE
2. Applicant(s)
(a) NAME : LARSEN & TOUBRO LIMITED
(b) NATIONALITY: An Indian Company.
(c) ADDRESS: L & T House, Ballard Estate, Mumbai 400 001,
State of Maharashtra, India
3. PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed:

TECHNICAL FIELD OF THE INVENTION
The present invention relates generally to a support arrangement in electric pole and more particularly to a mechanical arrangement supporting integrated insulated drive shaft in electric pole.
BACKGROUND AND THE PRIOR ART
Axial alignment of Integrated Drive Shaft is difficult to achieve and therefore it requires complex arrangement providing accurate alignment. Conventionally, due to non-centralization, the uniform contact pressure among the poles is difficult to maintain. Due to surface to surface contact of the Integrated Drive Shaft and poles, the resultant thermal friction during ON-OFF operation are very high. Also due to high thermal contact pressure, the pole starts eroding which leads to powder layer formation.
US7116194 discloses the alignment of Integrated Drive Shaft with the pole together with the virtual centre of mechanism by using a plate directly running through the slot provided in the coupler between the poles of the Integrated Drive Shaft. Thereafter it is coupled with a pin running through the poles.
EP0555158 discloses the centralization of the Integrated Drive Shaft by using a pin which couples the mechanism and the Integrated Drive Shaft of all the poles. In both the above patents, more number of components is required to achieve the required function. As the number and variety of components increases, manufacturing costs increases assembly and disassembly time increases. Due to metal pin running between the poles, there is a possibility of short-circuit.
Although the above mention prior arts offers a certain degree of alignment, the same need to be more accurate operating at ease. The present invention overcomes all the above mentioned disadvantages of the prior art and provides an

arrangement of mechanical elements to properly align the Integrated Drive Shaft without increasing the number of components.
OBJECTS OF THE INVENTION
A basic object of the present invention is to overcome the disadvantages/drawbacks of the known art.
Another object of the present invention is to provide mechanical elements for the supporting Integrated Insulated Drive shaft in electric pole construction.
Another object of the invention is to provide centralization of the Integrated Drive Shaft with the rotational centre of the mechanism.
Another object of the invention is to reduce friction by converting the surface friction into line friction through the mechanical arrangement.
Yet another object of the present invention is to reduce the rotational lag between the Integrated Drive Shaft to Integrated Drive Shaft.
These and other advantages of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings.
SUMMARY OF THE INVENTION
There is provided a mechanical support arrangement for drive shaft.
According to one embodiment of the present invention, there is provided mechanical arrangement supporting integrated insulated drive shaft in electric pole, said arrangement comprising a plurality of elements substantially equally

distributed along the circumference of said drive shaft providing substantially central alignment of said drive shaft during ON-OFF operation; Wherein said elements adapted to convert surface friction into line friction thereby reducing overall friction and reducing rotational lag of said drive shaft.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Figure 1 illustrates the arrangement of Roller cage.
Figure 2 illustrates the Placement of Integrated Drive Shaft and the assembly sequence together with the other elements.
Figure 3 illustrates the Integrated Drive Shaft resting on the roller elements and the like showing the surface contact transferring to line contact.
Figure 4 illustrates the assembly of one pole Integrated Drive Shaft with the other.
DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The following drawings are illustrative of particular examples for enabling methods of the present invention, are descriptive of some of the methods, and are not intended to limit the scope of the invention. The drawings are not to scale (unless so stated) and are intended for use in conjunction with the explanations in the following detailed description.
Reference is first invited to Fig 1 where the arrangement of Roller cage is shown.
Figure 2 illustrates the Placement of Integrated Drive Shaft and the assembly sequence together with the other elements.

Figure 3 shows the Integrated Drive Shaft resting on the roller elements and the like showing the surface contact transferring to line contact.
Figure 4 shows the assembly of one pole Integrated Drive Shaft with the other.
The invented system is thus a mechanical arrangement supporting integrated insulated drive shaft in electric pole.
DETAILED DESCRIPTION OF THE INVENTION
Accordingly in the present invention discloses arrangement of mechanical elements for supporting Integrated Insulated Drive shaft in electric pole construction. The said mechanical elements are roller, gear, pin or any other related type supported on the structure. The roller cage type, gear type or pulley type arrangement is provided at two or more locations equally distributed along the circumference of the Integrated Drive Shaft such that the Roller and Related elements takes care of the alignment of the Integrated Drive Shaft perfectly with the center when the force during ON-OFF Operation is applied eccentrically.
The mechanical elements arrangement of the present invention in Roller cage and any such kind as mentioned above converts surface friction to line friction which significantly reduces the heat developed. This further avoids surface to surface contact of the Integrated Drive Shaft directly with the electrical poles.
In the present invention, the Integrated Drive Shaft (3) is supported and there by centralized using a mechanical element arrangement which is of Roller cage type, gear type and pulley type arrangement but not limited to the same. This arrangement reduces friction and provides centralization of the Integrated Drive Shaft with the rotational centre of the mechanism.

The mechanical elements arrangement of the present invention in Roller cage and any such kind as mentioned above converts surface friction to line friction which significantly reduces the heat developed. This further avoids surface to surface contact of the Integrated Drive Shaft directly with the electrical poles. The plastic enclosure of the electric poles which is made of thermo-set or thermo plastic etc. erodes due to high thermal pressure in the poles during ON/OFF operation and forms the powder layer. This powder layer has a negative repercussion on the performance of the contact system such that the said tiny burnt powder particles stick onto the layer of the Integrated Drive Shaft and sliding surface areas of the enclosure. This further increases the sliding friction which decreases the performance level of the system.
To avoid all the said difficulties and in-turn increase the centralization accuracy, roller and the related elements arrangement is provided by the present invention. Roller cage and the related elements made up of the combinations of Brass, bronze, metal, plastic etc provides negligible friction level when it comes in contact with Thermosetting material and the likes.
As shown in Figure 1, the roller cage arrangement is provided at two or more locations equally distributed along the circumference of the Integrated Drive Shaft such that the Roller and Related elements takes care of the alignment of the Integrated Drive Shaft perfectly with the center when the force during ON-OFF Operation is applied eccentrically.
Figure 2 represents the assembly sequence in case of Sectioned integral mono-block type construction. The assembly sequence varies for pole-wise construction, Integral mono-block type of construction and all the cases where there is possibility of providing such mechanical elements arrangement utilizes the advantage of thicker section at the insulated chamber walls and the likes where the roller, pin, gear or any other related arrangement can be fixed.

As represented in Figure 3, the circumference of the Integrated Drive Shaft (3) has a definite contact with the roller and the related elements placed along the circumference. This converts the surface-surface contact into a line-line contact. Due to minimum of at least two roller and the related elements being in contact with the Integrated Drive Shaft continuously, the centralization is maintained with reduced friction. The mechanical elements (2) are roller, gear, pin or any other related type supported on the structure. Figure 4 describes the Integrated Drive Shaft of one pole coupling with the other and resting on the roller and related elements mentioned above forming the corresponding poles.
Although the embodiments herein are described with various specific embodiments, it will be obvious for a person skilled in the art to practice the embodiments herein with modifications. However, all such modifications are deemed to be within the scope of the claims.
It is also to be understood that the following claims are intended to cover all of the generic and specific features of the embodiments described herein and all the statements of the scope of the embodiments which as a matter of language might be said to fall there between.

WE CLAIM:
1. A mechanical arrangement supporting integrated insulated drive shaft in
electric pole (1), said arrangement comprising:
a plurality of elements (2) substantially equally distributed along the circumference of said drive shaft (3) providing substantially central alignment of said drive shaft (3) during ON-OFF operation;
Wherein said elements (2) adapted to convert surface friction into line friction thereby reducing overall friction and reducing rotational lag of said drive shaft (3).
2. Arrangement as claimed in claim 1 wherein said drive shaft (3) adapted to avoid surface to surface contact with said electric pole (1) thereby reducing heat generated during operation.
3. Arrangement as claimed in claim 1 wherein said elements (2) adapted to provide resting surface to said drive shaft (3) thereby transferring surface contact to line contact.
4. Arrangement as claimed in claim 1 optionally of roller cage type, gear type or a pulley type arrangement.
5. Arrangement as claimed in claim 1 made substantially of combination of metals, brass, bronze and plastic.

6. Arrangement as claimed in claim 1 wherein said elements (2) are substantially roller, gear or pin.
7. Arrangement as claimed in claim 1 wherein said drive shaft (3) at one electric pole (1) is coupling with other drive shaft.
8. A mechanical arrangement supporting integrated insulated drive shaft in electric pole as herein described and illustrated with reference to accompanying drawings.