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
Swiveling mechanisms for man coolers
APPLICANTS :
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
INVENTOR (S):
Mallik Pratap of Crompton Greaves Ltd, Fans Division, Plot No. 1, IDC Industrial Estate, Bethora, Ponda, Goa - 403409, 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 man coolers.
Particularly, this invention relates to the field of swiveling mechanisms for man coolers.
Background of the Invention:
Man coolers are typically used in foundries or workshops or places of high temperature environments, Man cooler is an axial flow fan, used for cooling, in high temperature environment industries. They increase the working efficiency by
i
delivering large volumes of fresh air across people working in hot areas.
Their basic function is to provide exhaustion of air. Hence, they comprise large impellers with large blades, which necessitate the use of large motors. This renders the man coolers heavy, and difficult to swivel around its longitudinal axis, in order to change the direction of impeller, and airflow thereby.
Domestic fans, typically, include a swiveling mechanism. This swiveling mechanism includes a plurality of annularly placed roller bodies (balls) in an annular roller plate. The balls facilitate the swiveling action as it rotates. This structure fails in the event of larger loads being thrust upon the roller bodies.

A neck, in a man cooler or a fan, is the arrangement between the motor mounting plate and pedestal support of the man cooler. Typically, all man coolers are with fixed type neck i.e. the fan can not move in horizontal plane.
Hence, there is a need for a neck with swivel arrangement so that fan direction can be changed without shifting or turning the base of the fan.
Prior Art:
US5435696 discloses Neck swiveling mechanisms are disclosed. However, such mechanisms are rendered useless for large industrial fans with heavy weights.
WO209 discloses thrust bearing means, but, this is not adapted to suit heavy loa1008871ds of industrial fans, for swiveling.
US6537029 and GB693920 discloses a swiveling mechanism. This is not adapted to suit heavy loads of industrial fans, for swiveling.
Swiveling mechanisms in pedestal fans or air coolers are known. However, these swiveling mechanisms include ball bearings and are limited to withhold a relatively lesser load for swiveling. There is no mechanism for allowing (manual) swiveling of heavy industrial load fans. According to the prior art, in man coolers, no rotation in horizontal plane was possible.
Objects of the Invention:

An object of the invention is to provide a thrust bearing mechanism for handling larger loads.
Another object of the invention is to provide swiveling in a horizontal plane.
Summary of the Invention:
According to this invention, there is provided a swiveling mechanism for man coolers, said mechanism comprises:
- collar adapted to provide support to a motor of said man cooler which drives an impeller with blades;
- thrust bearing mechanism adapted to receive the load of said motor through said collar; and
- pin extending below said thrust bearing mechanism to be fitted into said shaft, co-axially.
Typically, said thrust bearing mechanism includes:
an operative upper plate and an operative lower plate placed parallel with respect to each other in a spaced apart configuration, such that operative upper plate abuts said collar and operative lower plate is mounted in said pin; and
- a roller cage with roller bodies in said space between said operative upper
plate and said operative lower plate, thereby providing horizontal rotation of
operative upper plate horizontally with respect to said lower plate with the
help of said roller bodies.

Typically, said operative upper plate and said operative lower plate are circular plates.
Typically, said mechanism includes a fixing means adapted to fix said thrust bearing system in one position out of a plurality of rotated positions.
Typically, said mechanism includes a motor adapted to provide horizontal rotation of said thrust bearing mechanism in order to rotate the motor and said impeller and fan blades to provide swiveling.
Brief Description of the Accompanying Drawings:
The invention will now be described in relation to the accompanying drawings, in which:
Figure 1 illustrates a schematic of a man cooler;
Figure 2 illustrates a schematic of a neck portion of the man cooler of Figure 1, with motor mounted on the neck; and
Figure 3 illustrates a schematic of the swiveling mechanism for man coolers.
Detailed Description of the Accompanying Drawings:
Figure 1 illustrates a schematic of a man cooler. Part A represents the neck portion of the man cooler.

Figure 2 (Part A) illustrates a schematic of a neck portion of the man cooler of Figure 1, with motor (12) mounted on the neck. The neck is supported by an elongate shaft (14) which is mounted to the base (16).
According to this invention, there is provided a swiveling mechanism for man coolers.
Figure 3 illustrates a schematic of the swiveling mechanism for man coolers.
In accordance with an embodiment of this invention, there is provided a collar (20) adapted to provide support to said motor of said man cooler which drives an impeller with blades.
In accordance with another embodiment of this invention, there is provided a thrust bearing mechanism (30) adapted to receive the load of said motor through said collar. Typically, said thrust bearing system includes an operative upper plate (22) and said operative lower plate (24) placed parallel with respect to each other in a spaced apart configuration. There is provided a roller cage with roller bodies (26) in said space between said operative upper plate and an operative lower plate. Typically, the operative upper plate and operative lower plates are circular plates. Typically, said operative upper plate abuts said collar. Typically, said operative lower plate is mounted in said pin. The operative upper plate horizontally rotates with respect to said lower plate with the help of said roller bodies.

In accordance with yet another embodiment of this invention, there is provided a pin (32) extending below said thrust bearing mechanism to be fitted into said shaft, co-axially.
There is also provided a fixing means adapted to fix the thrust bearing system in one position out of a plurality of rotated positions.
In accordance with a preferred additional embodiment of this invention, there is provided a motor adapted to provide horizontal rotation of said thrust bearing mechanism in order to rotate the motor and said impeller and fan blades. This provided automated swiveling.

We claim,
1. A swiveling mechanism for man coolers, said mechanism comprising:
- collar adapted to provide support to a motor of said man cooler which drives an impeller with blades;
- thrust bearing mechanism adapted to receive the load of said motor through said collar; and
- pin extending below said thrust bearing mechanism to be fitted into said shaft, co-axially.
2. A mechanism as claimed in claim 1 wherein, said thrust bearing mechanism
includes:
an operative upper plate and an operative lower plate placed parallel with respect to each other in a spaced apart configuration, such that operative upper plate abuts said collar and operative lower plate is mounted in said pin; and
- a roller cage with roller bodies in said space between said operative upper
plate and said operative lower plate, thereby providing horizontal rotation of
operative upper plate horizontally with respect to said lower plate with the
help of said roller bodies.
3. A mechanism as claimed in claim 2 wherein, said operative upper plate and said
operative lower plate are circular plates,

4. A mechanism as claimed in claim 1 wherein, said mechanism includes a fixing means adapted to fix said thrust bearing system in one position out of a plurality of rotated positions.
5. A mechanism as claimed in claim 1 wherein, said mechanism includes a motor adapted to provide horizontal rotation of said thrust bearing mechanism in order to rotate the motor and said impeller and fan blades to provide swiveling.