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)
TITLE OF THE INVENTION
System to sense electrical contacts in crosswire position of lamps
APPLICANTS
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
Inventor
Bagul Nilesh Ramkrishna, Crompton Greaves Ltd , Baroda Lamp Works, Kural Village, Padra Taluka, Padra Jambusar Road, District Baroda-391430, Gujarat, India, an Indian National.
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed

FIELD OF THE INVENTION
The present invention relates to system to sense electrical contacts in crosswire position of lamps, particularly to fluorescent lamp (FTL).
BACKGROUND OF THE INVENTION
A fluorescent lamp (FTL) or fluorescent tube is a gas-discharge lamp that uses electricity to excite mercury vapor. The excited mercury atoms produce short-wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light. A fluorescent lamp converts electrical power into useful light more efficiently than an incandescent lamp. Lower energy cost typically offsets the higher initial cost of the lamp. The lamp fixture is more costly because it requires a ballast to regulate the current through the lamp.
For lighting purposes in offices, in public areas, workshop halls etc., one usually uses fluorescent lamps that are made of a straight glass tube, whose inside circumference is coated with a fine luminescent powder and whose interior is filled with a low pressure gas. This type of tubular fluorescent lamp is called a fluorescent tube. The ends of the glass tube are sealed and provided with a metal connecting base, which bears contact pins.
It is essential to test the cross wire position of FTL contacts at the time of online testing, without which, the test band rejection may increase. The FTL unit is passed on the system wherein the electrical pin of the FTL touches the contacts of the system. The

system works on double indexing principle, which means two FTLs will move on the system at the same time. The drawbacks in existing systems are due to increase in play area between the contacts of the system and electrical pin of FTL. Further, there is a possibility that all operational products may be rejected. Also, the sensing with electrical contacts are minimal. However, this existing system will work only for a two lamps. Therefore there is a need to system to sense electrical contacts in crosswire position of lamps
OBJECTS OF THE INVENTION
The objective of the invention to provide system to sense electrical contacts in crosswire position of lamps, particularly to fluorescent lamp (FTL) during testing.
DETAILED DESCRIPTION OF THE INVENTION
In order to obviate the aforesaid drawbacks, the invention provides system to sense electrical contacts in crosswire position of lamps, particularly to fluorescent lamp (FTL) during testing.
A system to sense electrical contacts in crosswire position of fluorescent lamps (FTL) comprising of FTLs positioned in parallel on a crosswire testing table with a cross wire position contact at each of the FTLs such that the angle of the said contact is greater than 110 degrees and a control panel connected to each of the said FTLs such that a rejection of the said FTL results into a light (LED) at the control panel.

These and other aspects, features and advantages of the invention will be better understood with reference to the following detailed description, accompanying drawings and appended claims, in which,
Fig la illustrates the schematic line diagram of the invention.
Fig lb illustrates the cross section of the cross wire position contact.
The present invention relates to a troubleshooting mechanism in a crosswire positioning of lamps, particularly fluorescent lamp (FTL). The present invention is described in detail with reference to figure la, wherein the crosswire positioning of the FTLs is shown in parallel. Further the present invention includes a cross wire position contact at each of the FTLs such that the angle of the said contact was more than 110 degrees, particularly 112 degrees. The invention also includes a control panel which is connected to each of the said FTLs such that there is a light (LED) at the control panel when there is a rejection of the said FTL.
The system, the shape and size of the contact was modified, which leads to enhanced sensing of electrical contacts. The system is modified for easy trouble shooting of the rejected lamp due to crosswire position and not burning position.
The system have multiple contacts are used to detect cross wire position. This arrangement is supported by an OR Logic i.e. the lamp should be passed as good lamp if the contact is made with contacts.

Although the invention has been described with reference to a specific embodiment, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiment, as well as alternate embodiments of the invention, will become apparent to persons skilled in the art upon reference to the description of the invention. It is therefore contemplated that such modifications can be made without departing from the spirit or scope of the invention as defined.

We claim:
1. A system to sense electrical contacts in crosswire position of fluorescent lamps (FTL) comprising of FTLs positioned in parallel on a crosswire testing table with a cross wire position contact at each of the FTLs such that the angle of the said contact is greater than 110 degrees and a control panel connected to each of the said FTLs such that a rejection of the said FTL results into a light (LED) at the control panel.
2. A system as claimed in Claim 1, wherein the angle of said contact is 112 degrees.