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
PROVISIONAL SPECIFICATION
(See section 10 and rule 13)
TITLE OF THE INVENTION
Improved Ceiling fan blades for high air delivery
APPLICANTS
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
INVENTORS
Qutbuddin Siddiquee and Obla Krishnamoorthy Amar Babu, both of Crompton Greaves Ltd , IPR Cell, Technical Information Centre (TIC), CG Global R&D Centre, Kanjur (E), Mumbai 400042, Maharashtra, India, both Indian Nationals
PREAMBLE TO THE DESCRIPTION
The following specification describes the invention:

FIELD OF INVENTION
This invention relates to an Improved Ceiling fan blades for high & Uniform air
delivery
BACKGROUND OF INVENTION
In prior art various types of Ceiling Fan are available with different blade angles, with different no of blades to provide maximum air delivery to cover maximum area. But as of now air delivery is less at the below the centre of the motor and at peripheral edge of blades.
In conventional fan, normally the velocity of air displaced by fan right below the motor of the fan with less velocity and increasing towards the middle of the blade and further declines at end of the blade / cone angle. The air delivery of the fan can be increased by increasing no of blades in ceiling fan. Drawback of the conventional fan is no provision to increase the volume of airflow below the centre of the motor. Accordingly, present invention discloses a rotating arrangement for improving the air delivery uniformly with high velocity than the conventional.
OBJECTS OF INVENTION
An object of the invention is to provide a more uniform air distribution and high air
velocity under the fan.
Another object of the invention is to provide a more air delivery and maximum area coverage under the fan.
Another object of the invention is to provide a rotating arrangement within a fan blade, rotating arrangement utilizing the air sucked by the rotating fan blade, due to the cutting of air downwardly when the ceiling fan is operating.


Another object of the invention is to provide a rotating arrangement within a fan blade so as to utilise the momentum gained by the rotating fan blade which rotate the rotating arrangement itself.
Another object of the invention is to provide a rotating arrangement within a fan blade comprises a rotating blade mounted on shaft, connected by any means rotatably.
Another object of the invention is a provision to position the rotating arrangement anywhere across the length of the blade, so as to optimise the air delivery.
Another embodiment of this invention is to provide a
DETAILED DESCRIPTION OF THE INVENTION
This invention addresses the requirement of uniform airflow the by providing rotating arrangement mounted across the length in the slot provided ceiling fan blade. A rotating arrangement consists of a series of blades of any shapes, mounted on a shaft such that the axis of shaft and ceiling fan blades remain parallel. Both ends of the shaft of rotating arrangement are connected with the fan blades by any means including bearing arrangement.
In accordance to the present invention, an arrangement comprises a series of rotatable fan blades provided across the length of blade, most preferably towards to the motor
In accordance to the present invention, the rotatable fan blades of this arrangement cuts more air down by the action of rotating fans blade of ceiling fan when it is operating.


In accordance to the present invention, the angle or curvature of rotatable fan blade can be straight, concave, convex depends on the design requirement.
In accordance to the present invention, the rotating arrangement can be made of casting, molding, protrusion or any other method or means
In accordance to the present invention, the rotating arrangement can be rotate clockwise or anti-clockwise as per the rotational direction of the fan blades.
In accordance to the present invention, the material of fan blades of light weight plastics or any other light material, including metals.
In accordance to the present invention, this arrangement can also be placed in any other fans or arrangement, not restricted to ceiling fan.
In accordance to the present invention is to provide an application of rotating arrangement suitable to any other fans including table fan.