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
Modular portable task light
APPLICANTS
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
INVENTOR
Katti Sudarshan of Crompton Greaves Ltd, Industrial Design Centre, Global R&D Centre, Crompton Greaves Ltd., Kanjurmarg (East), Mumbai-400 042, 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 electronics and mechanics.
Particularly, this invention relates to the field of lighting systems and arrangements.
Still particularly, this invention relates to a modular portable task light (for office spaces and office furniture).
Background of the Invention:
Today's office spaces house numerous open-cubicles within an enclosed space. The cubicles are partially enclosed workspaces, with partitions distinguishing one workspace from another. The partitions are typically, up till half the height of the room, so that, the person using the cubicle gets partial privacy.
Typically, the cubicles are formed in sets such that 2 orthogonally placed partitions, at the centre, define four quadrants i.e. provide four workstations at right angles with respect to each other. Alternatively, the cubicles are formed in sets such that 3 partitions are placed at an angle of 120 degrees with respect to each other, such that three workstations at 120 degrees with respect to each other are formed. Still alternatively, a third configuration is

of 3 cubicles in which 2 cubicles forming a quadrant of 135 degrees to each other and 1 quadrant of 90 degrees.
It is hence, assumed, that central console lighting, along with a power distribution system, may be mounted at the crossheads of the partitions such that all workstations may be simultaneously or selectively illuminated from the central console.
Objects of the Invention:
An object of the invention is to provide a central console for simultaneously illuminating cubicles or workstations.
Another object of the invention is to provide a central console for selectively illuminating cubicles or workstations.
Yet another object of the invention is to provide a central console which is modular to fit a range of cubicles formed by partitions.
Still another object of the invention is to provide an illumination system such that the central console also provided power plugs.

An additional object of the invention is to provide a removable light from a central console.
Summary of the Invention:
According to this invention, there is provided a modular portable task light adapted to be mounted onto a junction of partitions defining cubicles, said task light comprises:
a. mounting plate adapted to be mounted onto a junction of partitions,
said mounting plate having a plurality of pre-defined slots on its
operative underside to accommodate at least a plug point for said light
unit, at least a locking means, said mounting plate receiving power to
power associated assembly through it;
b. at least a light unit adapted to be fitted to said plug point, said light
unit including a light emitting means;
c. at least a plug point adapted to be slidably fitted into said slot of said
mounting plate, said plug point adapted to be powered through said
received power of said mounting plate; and
d. at least a locking means adapted to be slidably fitted into said slot of
said mounting plate, said locking means adapted to lock said task light
onto said partition junction.
Typically, said slots are T-slots adapted to be radially defined on the underside of said mounting plate.

Typically, said slots are T-slots adapted to be radially defined at a pitch of about 15 degrees to 120 degrees.
Typically, said light unit includes a body unit and a head unit, said body unit.
Typically, said light unit includes a body unit, a head unit, and a swiveling means adapted to swivel head unit with respect to body unit.
Typically, said light unit includes a body unit and a head unit, said body unit including batteries for auxiliary power supply.
Typically, said light unit includes a body unit and a head unit, said body unit including suction caps at the operative posterior side of said body unit in order to locate said light unit.
Typically said light unit includes a body unit and a head unit, said body unit including retractable soft board pins at the operative posterior side of said body unit in order to locate said light unit.

Typically, said light unit includes a body unit and a head unit, said head unit includes a LED mounting plate, LED driver PCB, and a diffuser to provide uniform illumination.
Typically, said locking means is a spring locker.
Typically, said locking means is a torsioned spring locker adapted to exert pressure onto said partition junction upon engaging said spring action in order to grip said mounting plate on said partition junction and further adapted to remove pressure from said partition junction upon disengaging said spring action in order to remove said mounting plate from said partition junction. Through this locking means of locking the said mounting plate on said partition one can mount the product onto the partitions whose thicknesses vary preferably from 50mm to 75mm.
Brief Description of the Accompanying Drawings:
The invention will now be described in relation to the accompanying drawings, in which:
Figure 1 illustrates various cubicle arrangements, and the position for mounting the modular portable task light;

Figure 2 illustrates a schematic of the modular portable task light;
Figure 3 illustrates the light unit of the modular portable task light attached to a plug point;
Figures 4 and 5 illustrate a light unit, of the modular portable task light, detached from the plug point;
Figure 6 illustrates a plug point on said mounting plate of said modular portable task light;
Figures 7a and 7b illustrate a locking means adapted to lock mounting plate of modular portable task light onto the partition of cubicle;
Figure 8 illustrates a working mechanism of the locking means of Figure 7a and 7b; and
Figure 9 illustrates an embodiment of the light unit, of the modular portable task light, with a swiveling head.

Detailed Description of the Accompanying Drawings:
According to this invention, there is provided a modular portable task light. Typically, said modular portable task light is used in an office environment for illuminating a cluster of cubicles, and workspaces, thereby.
Figure 1 illustrates various cubicle arrangements, and the position for mounting the modular portable task light. Two exemplary cubicle structures are defined. Partitions (P) are arranged to form workspaces (W) and cubicles. The task light (100) is mounted at the centre of all cubicles, at the top of crossheads of the partition.
Figure 2 illustrates a schematic of the modular portable task light (100).
In accordance with an embodiment of this invention, there is provided a mounting plate (10) adapted to be seated atop a crosshead of partitions, which define various adjacent cubicles and workstations. Typically, the mounting plate is substantially circular in order to symmetrically and radially cater to the plurality of cubicles. The mounting plate is the power source for the task light, as it is hardwired through to a power plug. The mounting plate serves as a distribution panel for power as well as light.

Figure 3 illustrates the light unit of the modular portable task light attached to a plug point. Figures 4 and 5 illustrate a light unit, of the modular portable task light, detached from the plug point. Figure 9 illustrates an embodiment of the light unit, of the modular portable task light, with a swiveling head.
In accordance with another embodiment of this invention, there is provided at least a light unit (12) adapted to be mounted from said mounting plate. Typically, the light unit hangs down from said mounting plate. Preferably, a plurality of light units hangs down from said mounting plate. Each light unit consists of a body unit (14) and a head unit (16). The body unit is the support arm for providing the hanging arrangement from the mounting plate. Typically, T-slots (18) are radially defined on the operative underside of said mounting plate. The T-slots are, preferably, placed at an angle of 30 degrees with respect to each other, thereby providing 12 radial T-slots on the operative underside of said mounting plate. The T-slots are adapted to receive plug point which receive light units. The plug point slides to and fro (as shown by the arrow) in the defined length of the T-slot, thereby allowing freedom of movement for the fitted light unit. The plug point, allows for the light unit to be removed from the plug point, thereby making it a stand-alone light unit. The T-slot includes hanging female plug point for providing charging / electrical connection ports. The light unit includes electrical contacts via male pin plugs (28) which mate with the ports in order to power the light unit. Preferably, there is provided an ON/OFF switch (22) of said light unit in order to power on or power off said light unit, independently. Further, there may be provided re-chargeable batteries (24) in said light unit,

so as to power said light unit, when it is mechanically and electrically disengaged from said mounting plate. The light unit also houses a constant current supply PCB (26). The light unit may be seperably mounted on a wall or a soft board. For the same purposes, attaching means such as suction caps (30) and soft board pins (32) are provided on the operative posterior side of said body of said unit.
Typically, the light unit includes an LED driver PCB (34), an LED mounting plate (36) with LEDS mounted on it, and a diffuser (38) to provide uniform light.
The light unit is portable and battery operated which gives flexibility to the user to detach from the main unit and mount it wherever the user is doing a task on the work table. The light unit is, further, mountable anywhere on the vertical wall of the partition without any changes in the construction of the furniture.
In accordance with an alternate embodiment of this invention, there is provided a swiveling means (20) adapted to allow swiveling of head unit with respect to said body unit, thereby allowing varying scope and illuminating area of radiant light.

Figure 6 illustrates a plug point (21) on said mounting plate of said modular portable task light.
Figure 7a and 7b illustrates a locking means adapted to lock mounting plate of modular portable task light onto the partition of cubicle. Figure 8 illustrates a working mechanism of the locking means of Figure 7a and 7b.
Typically, the locking means (40) is a spring loaded locker arm for mounting the task light (100) onto the intersection of the partition. The main unit is provided with T-slots at 30°pitch and the spring loaded locking means is slid through these slots to lock the mounting plate, and the task light, thereby, onto the furniture (partition). With the help of these slots the product can be mounted onto the furniture of 135°, 120°, and 90° configuration. The spring locker is located at some of the provided T-slots depending upon the partitions provided. The spring locker is tensioned onto the walls of the partition. The reaction force from the partitions due to the action of the spring, especially from radially equi-located spring lockers keeps the mounting plate and the task light in place. Reference numeral 42 refers to the inoperative condition of the locking means. Reference numeral 44 refers to the pressed (active) condition of the locking means.
The locking means allows for mounting on range of partition construction without a need for variants, i.e. three spring loaded lockers may be used to fit the mounting plate and task light onto a 3-cubicle partition junction, or

four spring loaded lockers may be used to fit the mounting plate and task light onto a 4-cubicle partition junction, or the like. And this locking means also allows for locking the portable task light onto the partitions of varying thicknesses from 50mm to 75mm.

We claim,
1. A modular portable task light adapted to be mounted onto a junction of partitions defining cubicles, said task light comprising:
a. mounting plate adapted to be mounted onto a junction of partitions,
said mounting plate having a plurality of pre-defined slots on its
operative underside to accommodate at least a plug point for a light
unit, at least a locking means, said mounting plate receiving power to
power associated assembly through it;
b. at least a light unit adapted to be fitted to said plug point, said light
unit including a light emitting means;
c. at least a plug point adapted to be slidably fitted into said slot of said
mounting plate, said plug point adapted to be powered through said
received power of said mounting plate; and
d. at least a locking means adapted to be slidably fitted into said, slot of
said mounting plate, said locking means adapted to lock said task light
onto said partition junction.
2. A task light as claimed in claim 1 wherein, said slots are T-slots adapted to be radially defined on the underside of said mounting plate.
3. A task light as claimed in claim 1 wherein, said slots are T-slots adapted to be radially defined at a pitch of about 15 degrees to 120 degrees.

4. A task light as claimed in claim 1 wherein, said light unit includes a body unit and a head unit, said body unit.
5. A task light as claimed in claim 1 wherein, said light unit includes a body unit, a head unit, and a swiveling means adapted to swivel head unit with respect to body unit.
6. A task light as claimed in claim 1 wherein, said light unit includes a body unit and a head unit, said body unit including batteries for auxiliary power supply.
7. A task light as claimed in claim 1 wherein, said light unit includes a body unit and a head unit, said body unit including suction caps at the operative posterior side of said body unit in order to locate said light unit.
8. A task light as claimed in claim 1 wherein, said light unit includes a body unit and a head unit, said body unit including retractable soft board pins at the operative posterior side of said body unit in order to locate said light unit.

9. A task light as claimed in claim 1 wherein, said light unit includes a body unit and a head unit, said head unit includes a LED mounting plate, LED driver PCB, and a diffuser to provide uniform illumination.
10. A task light as claimed in claim 1 wherein, said locking means is a spring locker.
11.A task light as claimed in claim 1 wherein, said locking means is a torsioned spring locker adapted to exert pressure onto said partition junction upon engaging said spring action in order to grip said mounting plate on said partition junction and further adapted to remove pressure from said partition junction upon disengaging said spring action in order to remove said mounting plate from said partition junction.