FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
As amended by the Patents (Amendment) Act, 2005
AND
The Patents Rules, 2003
As amended by the Patents (Amendment) Rules, 2005
COMPLETE SPECIFICATION (See section 10 and rule 13)
TITLE OF THE INVENTION
Stable support assembly for devices
APPLICANTS :
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
INVENTOR (S):
Satpathy Kunal of Crompton Greaves Ltd, Transformer (T3) Division, Plot No 29, 31 and 32, New Industrial Area No 1 AKVN, Manideep, 462046, Madhya Pradesh, India; an Indian National.
PREAMBLE TO THE DESCRIPTION:
The following specification particularly describes the nature of this invention and the manner in which it is to be performed:

Field of the Invention:
This invention relates to the field of mechanical engineering.
Particularly, this invention relates to a stable support assembly for devices.
Background of the Invention:
A transformer is an electrical device adapted to transfer electrical energy from one circuit to another with or without causing an effect in its parameters. Transformers are used in sub-stations or power stations. Large industrial transformers may be installed in large industries.
The use of transformers in some industries or locations is such that they are installed on a rail using wheels. In cases of installation of rail, the movement of the transformer is restricted to a single axis in the positive or negative direction. The non-availability of motion in other axes or planes may be a hindrance in cases of extreme weather or seismic activity or such turbulences or disturbances.
In cases of extreme wind or storm or seismic activity, there is a fair chance that a secure assembly may cause stresses to be incumbent upon the transformer housing if it is in the path of motion of the turbulent effect. This may dislodge the housing, too.
In order to provide a stable assembly, therefore, there is a need for a stable support assembly for such devices.

Prior Art:
US Patent 4540848 titled 'electric high-voltage earthquake-resistant bushing' discloses a bearing device that is fixed to a transformer tank via a stiff intermediate flange for rotation of the transformer tank.
US Patent 4181375 titled "the roller bearing with rolling elements having concave center parts and convex" discloses in general rolling members, whose rolling surface matches the curvature of the shaft. Further, it includes spacer balls that configured between end pins of adjacent rolling elements. The spacer balls in each instance engage guide rails arranged at both sides of the rolling members in the rectilinear section of a circular course and in the regions of the inner and outer surfaces of a sleeve.
There is a need for a more stable support assembly adapted to provide stability to a mounted device in cases of disturbance.
Objects of the Invention:
An object of the invention is to provide a stable support assembly for devices requiring installation.
An object of the invention is to provide a stable support assembly for devices requiring installation in a seismic or turbulent area or location.
Another object of the invention is to provide a stable support assembly which provides play of motion in a multitude of directions.

Yet another object of the invention is to provide a stable support assembly which provides two degrees of freedom of motion.
Summary of the Invention:
According to this invention, there is provided a stable support assembly for devices, said assembly comprises:
a. at least a roller ball adapted to be engaged with the base of the housing of a
transformer;
b. bearing assembly of a plurality of aligned ball bearings adapted to be located
between each of said roller balls and the base housing in order to provide for
the roller body to rotate underneath the housing, thereby causing the housing
to move along with it;
c. concavity in the ground upon which the device is to be installed or located;
and
d. notch at the nadir of said concavity, said notch adapted to receive a portion
of the roller body in its stable position;
said assembly providing the capability to move about in the two degrees of freedom within said defined concavity, reducing the opposing force to a disturbing force.
Typically, said concavity is a defined concavity defined in accordance with predefined parameters relating to the dimensions of the device, the dimensions of the roller body, the amount of free-moving play required to be given to the roller body, the nature of the terrain.
Typically, a plurality of roller balls are provided to support the base at multiple locations, thereby balancing the device on the base.

Brief Description of the Accompanying Drawings:
The invention will now be described in relation to the accompanying drawings, in which:
Figure 1 illustrates a schematic of a portion of the stable support assembly for devices.
Figure 2a illustrates a schematic of the base of the device with 4 roller bodies, defined in the form of a rectangle, attached to it in 4 separate concavities; and
Figure 2b illustrates a schematic of the base of the device with 3 roller bodies, defined in the form of an equilateral triangle, attached to it in 3 separate concavities.
Detailed Description of the Accompanying Drawings:
According to this invention, there is provided a stable support assembly for devices.
Although this invention is defined in relation to a transformer support assembly, it may be expanded to provide support to other mechanical and electrical equipment requiring support and fixation in similar circumstances.
Figure 1 illustrates a schematic of a portion of the stable support assembly for devices.

In accordance with an embodiment of this invention, there is provided a roller ball (RB) adapted to be engaged with the base (B) of the housing of a transformer (T). A plurality of roller balls may be provided to support the base at multiple locations, thereby balancing the device on the base.
In accordance with another embodiment of this invention, there is provided a bearing assembly (BB) of a plurality of aligned ball bearings adapted to be located between each of said roller balls and the base housing. The bearings provide for the roller body to rotate underneath the housing, thereby causing the housing to move along with it.
The roller body together with the ball bearings forms a rolling-element bearing which uses balls to maintain the separation between the roller body and the base. The ball bearing reduces rotational friction and provides an easier play of movement for the load i.e. the device (transformer) mounted atop the base.
In accordance with yet another embodiment of this invention, there is provided a concavity (C) in the ground upon which the device is to be installed or located. The concavity is defined in accordance with pre-defined parameters relating to the dimensions of the device, the dimensions of the roller body, the amount of free-moving play required to be given to the roller body, the nature of the terrain, and the like.
In accordance with still another embodiment of this invention, there is provided a notch (N) at the nadir of said concavity, said notch adapted to receive a portion of the roller body in its stable position.

In cases of turbulence of seismic activity, the device or transformer, instead of staying fixed in opposition to the activity or force, now has the capability to move about in the two degrees of freedom i.e. front-back and left-right. The curvature of the concavity prevents its play beyond a certain degree. The roller body may move about in the defined concavity as long as the turbulence lasts. Its natural state, in the state of rest, is to return to the nadir of the concavity, thereby sitting in the defined notch of the concavity. Each ball moves simultaneously, reducing the opposing force to the turbulent or disturbing force. This reduction in opposition reduces the amount of incumbent stress on the device and also reduces the chance of the device toppling over.
Figure 2a illustrates a schematic of the base of the device with 4 roller bodies, defined in the form of a rectangle, attached to it in 4 separate concavities; and Figure 2b illustrates a schematic of the base of the device with 3 roller bodies, defined in the form of an equilateral triangle, attached to it in 3 separate concavities.
While this detailed description has disclosed certain specific embodiments of the present invention for illustrative purposes, various modifications will be apparent to those skilled in the art which do not constitute departures from the spirit and scope of the invention as defined in the following claims, and it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

We claim,
1. A stable support assembly for devices, said assembly comprising:
a. at least a roller ball adapted to be engaged with the base of the housing
of a transformer;
b. bearing assembly of a plurality of aligned ball bearings adapted to be
located between each of said roller balls and the base housing in order to
provide for the roller body to rotate underneath the housing, thereby
causing the housing to move along with it;
c. concavity in the ground upon which the device is to be installed or
located; and
d. notch at the nadir of said concavity, said notch adapted to receive a
portion of the roller body in its stable position;
said assembly providing the capability to move about in the two degrees of freedom within said defined concavity, reducing the opposing force to a disturbing force.
2. An assembly as claimed in claim 1 wherein, said concavity is a defined concavity defined in accordance with pre-defined parameters relating to the dimensions of the device, the dimensions of the roller body, the amount of free-moving play required to be given to the roller body, the nature of the terrain.
3. An assembly as claimed in claim 1 wherein, a plurality of roller balls are provided to support the base at multiple locations, thereby balancing the device on the base.