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
A modular flange-motor mounting jig for testing motors.
APPLICANTS (S)
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
INVENTOR (S)
Bhujbal Eknath of Crompton Greaves Limited, LT Motors Division (M3), A-6/2 MIDC, Ahmednagar - 414111, Maharashtra, 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 systems.
Particularly, this invention relates to the field of testing equipment.
Still particularly, this invention relates to a testing equipment for receiving and testing motors.
Specifically, this invention relates to a modular flange-motor mounting jig for testing flange-motors.
BACKGROUND OF THE INVENTION:
An electric motor converts electrical energy into mechanical energy. Motors are typically tested once they are manufactured and assembled in accordance with predesigned parameters in order to check rated values and to ascertain their working. For the purposes of testing, their voltage ratings their current ratings, and their wattage ratings are typically to be tested. Further surge current testing for high voltage testing is also to be performed.
Apart from electrical parameters, aesthetic values of the motor also need to be tested. These aesthetic values may include finishing of the motor. Further the testing criteria include monitoring criteria related to noise, wobble and the like sound parameters. This is, typically, done manually by testing personnel who is trained to understand aberrations.

For the purposes of testing, a mechanical jig is used which is adapted to receive and mount a motor.
There is a need to improve the productivity of testing motor and provide an improved and safe mechanism for testing
OBJECTS OF THE INVENTION:
An object of the invention is to provide a mechanical jig to receive various types of flange-motors for their testing.
Another object of the invention is to provide a mechanical jig which is modular to receive flange-motors of various dimensions for their testing.
Yet another object of the invention is to provide a mechanical jig for testing of flange-motors which jig provides for adjustment in axial direction.
Still another object of the invention is to provide a mechanical jig for testing of flange-motors which jig provides for adjustment in radial direction.
SUMMARY OF THE INVENTION:
According to this invention, there is provided a modular flange-motor mounting jig
for testing motors, said jig comprises:
a. a first pair of parallel placed elongate rectangular plates, spaced apart from each other and a second pair of parallel placed elongate rectangular plates, spaced apart from each other, said second pair orthogonal to said first pair, in that, each of the first pair of parallel placed elongate rectangular plates is

spaced apart from the other by each of the plates from the second pair of parallel placed elongate rectangular plates and vice versa, in that, the four elongate rectangular plates form the periphery of substantially rectangular assembly, with a central hollow region and wherein, said second pair of parallel placed elongate rectangular plates having their ends slide-able into and out of corresponding inner lateral end edges of said first pair of parallel placed elongate rectangular plates, thereby allowing change of width of said substantially rectangular assembly, with said central hollow region.
Typically, said second pair of parallel placed elongate rectangular plates comprise pre-defined slots / holes in order to secure its desired slid-in or slid-out configuration.
Preferably, said second pair of parallel placed elongate rectangular plates comprise an operable notch which juts down into the inner lateral end edge engaging at least one of the slots of the second pair of parallel placed elongate rectangular plates, thereby defining the width dimension of said jig.
Alternatively, said second pair of parallel placed elongate rectangular plates comprise any fastening mechanism or clamping mechanism which may be engaged in order to secure at least one of the slots of the second pair of parallel placed elongate rectangular plates, thereby defining the width dimension of said jig.
Typically, said jig comprises inverted T-plates located at the end of each first pair of parallel placed elongate rectangular plates.

Typically, said jig comprises inverted T-plates located at the end of each first pair of parallel placed elongate rectangular plates, said T-plate comprising a horizontal plate abutted with an orthogonally extending vertical plate.
Typically, said jig comprises inverted T-plates located at the end of each first pair of parallel placed elongate rectangular plates, said T-plate comprising a horizontal plate abutted with an orthogonally extending vertical plate, said horizontal plate including a slider arrangement with respect to an upper surface of each of said first pair of parallel placed elongate rectangular plates.
Typically, said jig comprises at least one channel on said first pair of parallel placed elongate rectangular plates, said channel adapted to engage and corresponding to an inverted T-plate.
Typically, said jig comprises at least one channel on said first pair of parallel placed elongate rectangular plates, said channel adapted to engage and corresponding to an inverted T-plate and further comprised a slider arrangement with respect to said inverted T-plate such that said channel and slider arrangement allows each pair of inverted T-plates, per parallel placed elongate rectangular plates of the first pair, to move towards each other or away from each other, thereby defining the length dimension of said jig.
Typically, said jig comprises means to lock an inverted T-plate in a channel on said first pair of rectangular plate, thereby defining the length dimension of said jig.
Typically, said jig comprises inverted T-plates, said T-plates including an inclined surface such that the inclined surfaces, of two inverted T-plates on a common elongate rectangular plate of the first pair, face other.

Typically, said jig comprises bent strips adapted to connect a pair of inverted T-plates facing each other with respect to their inclined surfaces.
Typically, said jig comprises bent strips adapted to connect a pair of inverted T-plates such that each of the bent strips is connected to the operatively outwards surface of the inverted T-plate to form a substantially U-shaped strip, thereby providing for clamping a motor on to the jig.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS:
Figure 1 illustrates a side view of a flange-motor mounting jig, of the prior art, for motor testing;
Figure 2 illustrates a top view of the mounting jig of Figure 1; and
Figure 3 illustrates a front view of the mounting jig of Figure 1.
The invention will now be described in relation to the accompanying drawings, in which:
Figure 4 illustrates an isometric view of the modular flange-motor mounting jig for motor testing;
Figure 5 illustrates a side view of the modular flange- motor mounting jig for motor testing of Figure 4;
Figure 6 illustrates a front view of the modular flange-motor mounting jig for motor testing of Figure 4; and

Figure 7 illustrates a top view of the modular flange-motor mounting jig for motor testing of Figure 4.
DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS:
Figure 1 illustrates a side view of a flange-motor mounting jig, of the prior art, for motor testing.
Figure 2 illustrates a top view of the mounting jig of Figure 1.
Figure 3 illustrates a front view of the mounting jig of Figure 1.
The jig (100) of the prior art comprised a substantially flat operative horizontal plate (12) and a rearward orthogonally located operative vertical plate (14). A motor was mounted on a spigot plate (16) which was placed parallel to the rearward orthogonally located operative plate (14) and clamped with flanged holes and fitted on the jig (100). A motor, which was to be tested, is mounted on to the spigot plate (16). The motor body, extended thereof from the spigot plate (16) in a spaced apart manner with respect to the operative horizontal plate. This made the motor a hanging body while it was being tested. The clamping of the motor was only from one side of the motor body; i.e. at the flange portion of the motor. For every change in dimension of motor, a different spigot plate was required to be retrofitted on to this. Hence, a variety of spigot plates was needed to be separately stacked and used in accordance with the motor dimensions such that they matched. This was a cumbersome task. Further, there were more vibrations. Also, the loading and unloading of the motor was a difficult job. There is a need for a modular jig which eliminates these limitations.

According to this invention, there is provided a modular flanged motor mounting jig for testing motors.
Figure 4 illustrates an isometric view of the modular flange-motor mounting jig (200) for motor testing.
Figure 5 illustrates a side view of the modular flange- motor mounting jig (200) for motor testing of Figure 4.
Figure 6 illustrates a front view of the modular flange-motor mounting jig (200) for motor testing of Figure 4.
Figure 7 illustrates a top view of the modular flange-motor mounting jig (200) for motor testing of Figure 4.
In accordance with an embodiment of this invention, there is provided a first pair of parallel placed elongate rectangular plates, spaced apart from each other. The first pair of parallel placed elongate rectangular plates is referenced by numeral 22.
In accordance with another embodiment of this invention, there is provided a second pair of parallel placed elongate rectangular plates, spaced apart from each other. The first pair of parallel placed elongate rectangular plates is referenced by numeral 24.
Each of the first pair of parallel placed elongate rectangular plates is spaced apart from the other by each of the plates from the second pair of parallel placed elongate rectangular plates and vice versa, in that, the four elongate rectangular

plates form the periphery of substantially rectangular assembly, with a central hollow region (26).
The second pair of parallel placed elongate rectangular plates have their ends slid into the inner lateral end edges (28) of the first pair of parallel placed elongate rectangular plates. The ends of the second pair of parallel placed elongate rectangular plates are spaced apart from the outer lateral end edges such that there is room for operative axial sliding of the second pair of parallel placed elongate rectangular plates into the inner lateral end edge and out of the inner lateral end edge, thereby changing the width of the of substantially rectangular assembly, with a central hollow region. This second pair of parallel placed elongate rectangular plates includes pre-defined slots / holes (32) in order to secure its desired slid-in or slid-out configuration. An operable notch which juts down into the inner lateral end edge engages one of the slots of the pair of parallel placed elongate rectangular plates, thereby defining the dimension. Alternatively, any fastening mechanism or clamping mechanism may be engaged in order to secure the slots in place, thereby defining the dimension.
In accordance with yet another embodiment of this invention, there are provided inverted T-plates (34); each inverted T-plate located at the end of each first pair of parallel placed elongate rectangular plates. The inverted T-plate includes a horizontal plate (34a) abutted with an orthogonally extending vertical plate (34b). The horizontal plate includes a slider arrangement with respect to the upper surface of each of the first pair of parallel placed elongate rectangular plates. At least one channel (36) is provided, on the first pair of parallel placed elongate rectangular plates, corresponding to each inverted T-plate. This channel and slider arrangement allows each pair of inverted T-plates, per parallel placed elongate rectangular plates of the first pair, to move towards each other or away from each other. Each

inverted T-plate can be individually moved and locked in a position. This allows for lengthwise modular arrangement. The inverted T-plate includes an inclined surface (39) such that the inclined surfaces, of two inverted T-plates on a common elongate rectangular plate of the first pair, face other.
In accordance with still another embodiment of this invention, there are provided bent strips (35) adapted to connect a pair of inverted T-plates facing each other with respect to their inclined surfaces. Each of the bent strips is connected to the operatively outwards surface of the inverted T-plate to form a substantially U-shaped strip. This provides for clamping a motor on to the jig.
The inverted-T plates are used for mounting support and are adjustable in nature due to their sliding mechanism. The entire jig can be modularly adjusted as per the length and diameter of the motor by changing the length and width of the jig, as disclosed, in order to form a secure and vibration-free testing assembly. There are positioning and locating pins on the jig which are used to obtain the centre of height of motor, to be tested, in line with drive motor and gear box centre height. The jig provides a single fixture for mounting and clamping of different (dimensions of) motors. Due to the use of this jig, flange-motor loading and unloading time required is less for motor testing. Further, the jig is an easy to handle assembly.
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. According to this invention, there is provided a modular flange-motor
mounting jig for testing motors, said jig comprising:
a. a first pair of parallel placed elongate rectangular plates, spaced apart from each other and a second pair of parallel placed elongate rectangular plates, spaced apart from each other, said second pair orthogonal to said first pair, in that, each of the first pair of parallel placed elongate rectangular plates is spaced apart from the other by each of the plates from the second pair of parallel placed elongate rectangular plates and vice versa, in that, the four elongate rectangular plates form the periphery of substantially rectangular assembly, with a central hollow region and wherein, said second pair of parallel placed elongate rectangular plates having their ends slide-able into and out of corresponding inner lateral end edges of said first pair of parallel placed elongate rectangular plates, thereby allowing change of width of said substantially rectangular assembly, with said central hollow region.
2. A jig as claimed in claim 1 wherein, said second pair of parallel placed elongate rectangular plates comprise pre-defined slots / holes in order to secure its desired slid-in or slid-out configuration.
3. A jig as claimed in claim 1 wherein, said second pair of parallel placed elongate rectangular plates comprise an operable notch which juts down into the inner lateral end edge engaging at least one of the slots of the second pair of parallel placed elongate rectangular plates, thereby defining the width dimension of said jig.

4. A jig as claimed in claim 1 wherein, said second pair of parallel placed elongate rectangular plates comprise any fastening mechanism or clamping mechanism which may be engaged in order to secure at least one of the slots of the second pair of parallel placed elongate rectangular plates, thereby defining the width dimension of said jig.
5. A jig as claimed in claim 1 wherein, said jig comprises inverted T-plates located at the end of each first pair of parallel placed elongate rectangular plates.
6. A jig as claimed in claim 1 wherein, said jig comprises inverted T-plates located at the end of each first pair of parallel placed elongate rectangular plates, said T-plate comprising a horizontal plate abutted with an orthogonally extending vertical plate.
7. A jig as claimed in claim 1 wherein, said jig comprises inverted T-plates located at the end of each first pair of parallel placed elongate rectangular plates, said T-plate comprising a horizontal plate abutted with an orthogonally extending vertical plate, said horizontal plate including a slider arrangement with respect to an upper surface of each of said first pair of parallel placed elongate rectangular plates.
8. A jig as claimed in claim 1 wherein, said jig comprises at least one channel on said first pair of parallel placed elongate rectangular plates, said channel adapted to engage and corresponding to an inverted T-plate.
9. A jig as claimed in claim 1 wherein, said jig comprises at least one channel on said first pair of parallel placed elongate rectangular plates, said channel adapted to engage and corresponding to an inverted T-plate and further

comprised a slider arrangement with respect to said inverted T-plate such that said channel and slider arrangement allows each pair of inverted T-plates, per parallel placed elongate rectangular plates of the first pair, to move towards each other or away from each other, thereby defining the length dimension of said jig.
10. A jig as claimed in claim 1 wherein, said jig comprises means to lock an inverted T-plate in a channel on said first pair of rectangular plate, thereby defining the length dimension of said jig.
11. A jig as claimed in claim 1 wherein, said jig comprises inverted T-plates, said T-plates including an inclined surface such that the inclined surfaces, of two inverted T-plates on a common elongate rectangular plate of the first pair, face other.
12. A jig as claimed in claim 1 wherein, said jig comprises bent strips adapted to connect a pair of inverted T-plates facing each other with respect to their inclined surfaces.
13. A jig as claimed in claim 1 wherein, said jig comprises bent strips
adapted to connect a pair of inverted T-plates such that each of the bent
strips is connected to the operatively outwards surface of the inverted T-
plate to form a substantially U-shaped strip, thereby providing for clamping
a motor on to the jig.