FORM 2
THE PATENTS ACT, 1970
(39 of 1970) As amended by the Patents (Amendment) Act, 2005
&
THE PATENTS RULES, 2003
As amended by the Patents (Amendment) Rules, 2006
COMPLETE SPECIFICATION (See section 10 and rule 13)
L TITLE OF THE INVENTION
A notching machine for joining the top cap and the common base of the lamps
2. APPLICANTS
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
J. INVENTORS
(a) Name : Dixit Pankaj and Makwana Mahendra
(b) Nationality : both Indian Nationals
(c) Address : Crompton Greaves Limited, Lighting Division, Baroda Lamp Works, Kural Village, Badra Taluka, Patra Jambusar Road, Dist Baroda 391430, India
4 PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the nature of this invention and the manner in which it is to be performed.

BACKGROUND OF THE INVENTION
Manufacturing process of compact fluorescent lamp includes an important process called as notching. During the notching process, the top cap of the compact fluorescent lamp having the common base with capsules fitted thereto is pressed to join the top cap and the common base.
This type of arrangement may not be effective as there are chances wherein the joint between the top cap and the common base breaks open resulting into damaging the electrical connection. Also this process involves applying a considerably high pressure concentrated on a very small point-area for notching. This many a times results in breakage of the top cap. Also, there are chances of the pressure not being applied at the right point.
This results in overall reduction of the production of compact fluorescent lamps and wastage thereof.
There is therefore required a system which provides an effective means for joining the top cap and the common base of the compact fluorescent lamps or the likes.
SUMMARY
A notching machine for joining the top cap and the common base of plastic material of the compact fluorescent lamp is described. In one embodiment the common base portion of the compact fluorescent lamp placed inside the top cap portion thereof

requiring notching operation is notched using heating pins that apply heat and pressure on said top cap in direction of the common base placed inside the top cap.
The notching machine is provided with a temperature controller to maintain the temperature of the heating pin/s at a predefined value.
The notching machine provided herein allows strong notching between the top cap and the common base portion of the compact fluorescent lamps. The feature of heating the points of application of pressure allows for lesser chances of breakage of the plastic top cap during notching operation. The overall success rate during the notching operation thus increases. Also, the stable mechanism provided reduces the chances of displacement of the compact fluorescent lamp during notching operation.
BRIEF DESCRIPTION OF THE DRAWINGS
Reference will be made to embodiments of the invention, examples of which may be illustrated in the accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in the context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments
Fig. 1 shows an isometric view of a notching machine for joining the top cap and the common base of plastic material of the compact fluorescent lamp as per one embodiment of the present invention.

Fig. 2 illustrates a front view of the notching machine for joining the top cap and the common base of plastic material of the compact fluorescent lamp as per one embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
A notching machine for joining the top cap and the common base of plastic material of the compact fluorescent lamp is described. In one embodiment the common base portion of the compact fluorescent lamp placed inside the top cap portion thereof requiring notching operation is notched using the machine allowing the two portions to be joined.
In one embodiment of the present invention a heating pin is provided to make a deep notch for holding of the top cap and the base portion. In another embodiment numerous heating pins may be provided to provide notching at four different points on the top cap.
In the following description, for purpose of explanation, specific details are set forth in order to provide an understanding of the invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without these details. One skilled in the art will recognize that embodiments of the present invention, some of which are described below, may be incorporated into various assembly line aging processes. It is understood that one skilled in art may modify or change the data used in the examples described in the specification.

Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, characteristic, or function described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.
A notching machine for joining the top cap and the common base of plastic material of the compact fluorescent lamp as per one embodiment herein is described with reference to figure 1. Figure 2 shows a front view of the notching machine for joining the top cap and the common base of plastic material of the compact fluorescent lamp as in figure 1. The notching machine 100 for joining the top cap and the common base of plastic material of the compact fluorescent lamp 12 comprises of a base table 103 having a cutout portion 105 therein for holding the top cap thereon and allowing capsule portion of the compact fluorescent lamp through the cutout portion. The compact fluorescent lamp may be positioned as shown upside down allowing the top cap being held by the base table cutout portion. The size of the cutout portion may be made to cater to the size of the compact fluorescent lamps and the size of the top cap of the compact fluorescent lamp undergoing the operation of notching.
Atleast one heating pin 109 may be positioned over the said base table for applying heat and pressure on said top cap in direction of the common base placed inside the top cap. In one embodiment multiple pins may be placed. In one exemplary embodiment four pins are placed to cater to the four corners of the square shaped top cap. In which case four notches would be made in the top cap which would notch into the common base.

A heating pin holding means 121 allowing motion of the heating pin towards and away from the base table is provided. The heating pin holding means may be fixed on a tubular rod over which the said means may be moved towards or away from the base table. The wiring required for controlling and heating the heating coils may be routed through the said tubular rod and through the heating pin holding means to a temperature controller 115 which is configured to heat and maintain said heating pins at a predefined temperature. In one exemplary embodiment the temperature maintained by the controller may be 40° C.
In one embodiment of the present invention a pneumatic cylinder 151 is loaded on the heating pin holding means for providing force to the heating pin.
The notching machine provided herein allows strong notching between the top cap and the common base portion of the compact fluorescent lamps. The feature of heating the points of application of pressure allows for lower chances of breakage of the plastic top cap during notching operation. The overall success rate during the notching operation thus increases. Also, the stable mechanism provided reduces the chances of displacement of the compact fluorescent lamp during notching operation.
The foregoing description of the invention has been described for purposes of clarity and understanding. Although embodiments of the present invention have been described relative to a few standards, and associated attributes therein, one skilled in the art will recognize that the present invention is also very much applicable to other such methods and systems. It is not intended to limit the invention to the precise form

disclosed. Various modifications may be possible within the scope and equivalence of the appended claims.

We Claim:
1. A notching machine for joining the top cap and the common base of plastic
material of the compact fluorescent lamp, the machine comprising:
a base table having a cutout portion therein for holding the top cap thereon and allowing capsule portion of the compact fluorescent lamp through the cutout portion; atleast one heating pin positioned over the said base table for applying heat and pressure on said top cap in direction of the common base placed inside the top cap; a temperature controller configured to heat and maintain said heating pins at a predefined temperature;
a heating pin holding means allowing motion of the heating pin towards and away from the base table.
2. The plastic notching machine for joining the top cap and the common base of the
compact fluorescent lamp as in claim 1, wherein four pins are provided to apply
pressure on four corners of a square shaped top cap of the compact fluorescent lamp.