FORM 2
THE PATENTS ACT, 1970
(39 OF 1970)
AND
THE PATENT RULES, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
“MULTISTEP HEIGHT ADJUSTABLE ASSEMBLY FOR A MOUNTING SYSTEM OF A CEILING FAN”
We, Bajaj Electricals Limited, an Indian National, of 45/47, Veer Nariman Road, Fort, Mumbai- 400001, Maharashtra, India
The following specification particularly describes the invention and the manner in which it is to be performed.

FIELD OF INVENTION
The present invention relates to the field of consumer appliances, particularly ceiling fan with adjustable canopy mounting system.
BACKGROUND OF THE INVENTION
Ceiling fans comprise a down rod, which is used to affix the ceiling fan from a hook/ fixture in the ceiling. In order to hide/mask the visible down rod for aesthetic purposes, there is typically provided a top canopy, a down rod cover, and a bottom canopy. While the down rod cover as the name suggests, covers the down rod, the top canopy covers the down rod and ceiling hook fixture, the bottom canopy covers the down rod and ceiling fan motor attachment to give an aesthetically pleasing look. Typically, the top and bottom canopy, and down rod cover are attached by screw or clutch system.
For a particular ceiling fan, the size/ dimensions of the down rod cover, top and bottom canopy are fixed. In the event the ceiling fan is to be installed to suit a false ceiling, the canopy(ies) or down rod cover has to be cut in order to install the ceiling fan. This is not only inconvenient, but is also aesthetically unpleasing. Further, any such adjustments are permanent, and one-time only. Further adjustments are impossible.
Therefore, there is a need to innovate and improve upon the existing offerings in the art to provide a system which overcomes the limitations in the art.

SUMMARY OF THE INVENTION
This summary is not intended to identify the essential features of the invention nor is it intended for use in determining or limiting the scope of the claimed subject matter.
In an aspect of the present invention, there is provided an adjustable assembly for a mounting system of a ceiling fan, the assembly comprising (a) a top cover; a middle cover; and a bottom cover, wherein the middle cover can adjustably slide over the top cover; and independently, the bottom cover can adjustably slide over the middle cover.
In another aspect, the adjustable assembly for a mounting system of a ceiling fan comprises at least a first locking arrangement to engage the top cover with the middle cover; and at least a second locking arrangement to engage the middle cover with the bottom cover.
In another aspect, the at least the first locking arrangement and independently at least the second locking arrangement is a multi-step locking arrangement, the multi-step locking arrangement comprising a plurality of slots and at least a projection.
In yet another aspect, the plurality of slots of at least the first locking arrangement are provided on the outer wall of the top cover to selectively engage with at least a projection provided on the inner wall of the middle cover.
In another aspect, the plurality of slots of at least the first locking arrangement selectively engages with at least a projection; the selective engagement being positive locking.

In yet another aspect, the plurality of slots of at least the second locking arrangement are provided on the outer wall of the middle cover to selectively engage with at least a projection provided on the inner wall of the bottom cover.
In another aspect, the plurality of slots of at least the second locking arrangement selectively engages with at least a projection; the selective engagement being positive locking.
In an aspect, the projections are located equidistant from each other.
In yet another aspect, the pitch of the plurality of slots is between 5 mm and 25 mm.
In an aspect, the adjustable assembly for a mounting system of a ceiling fan further comprises a stopper, said stopper is removably attached within the bottom cover to prevent the bottom cover contacting the ceiling fan motor.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The following drawings form part of the present disclosure and are intended to be illustrative to better explain the invention and the embodiments herein, but are not to be construed as limiting the scope of the invention.
Figure 1a-1b depicts the adjustable assembly for a mounting system of a ceiling fan, in accordance with an embodiment of the present invention.

Figure 2a-2b depicts isometric and top-down view respectively of the middle cover of the adjustable assembly for a mounting system of a ceiling fan, in accordance with an embodiment of the present invention.
Figure 3a-3b depicts the schematic of the plurality of slots of the locking arrangement of the adjustable assembly for a mounting system of a ceiling fan, in accordance with an embodiment of the present invention.
Figure 4a- 4b depicts isometric and top-down view respectively of the bottom cover of the adjustable assembly for a mounting system of a ceiling fan, in accordance with an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Those skilled in the art will be aware that the invention described herein is subject to variations and modifications other than those specifically described. It is to be understood that the invention described herein includes all such variations and modifications. The invention also includes all such features referred to or indicated in this specification, individually or collectively, and any and all combinations of any two or more of said features.
For convenience, before further description of the present invention, certain terms/ definitions employed in the specification should be read in light of the remainder of the disclosure and understood as by a person of skill in the art. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by a person of ordinary skill in the art.
The present invention provides an adjustable assembly (1) for a mounting system of a ceiling fan, the assembly comprising (a) a top cover (2); a middle cover (3);

and a bottom cover (4), wherein the middle cover (3) can adjustably slide over the top cover (2); and independently, the bottom cover (4) can adjustably slide over the middle cover (3).
In an embodiment, the middle cover (3) can adjustably slide over the top cover (2) while the bottom cover (4) is in a fixed position relative to the middle cover (3). In an embodiment, the bottom cover (4) can adjustably slide over the middle cover (3) while the top cover (2) is in a fixed position relative to the middle cover (3). In an embodiment, the middle cover (3) can adjustably slide over the top cover (2) and independently, the bottom cover (4) can concurrently adjustably slide over the middle cover (3).
The middle cover (3) can adjustably slide over the top cover (2) to at least one defined position. In an embodiment, there may be 2 defined positioned. In an embodiment, there may be 3 defined positions. In an embodiment, there may be more than 3 positions. In a preferred embodiment, there are 8 defined positions. In an embodiment, the middle cover (3) can adjustably slide over the top cover (2) to a defined 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, or 8th position.
The bottom cover (4) can adjustably slide over the middle cover (3) to at least one defined position. In an embodiment, there may be 2 defined positioned. In an embodiment, there may be 3 defined positions. In an embodiment, there may be more than 3 positions. In a preferred embodiment, there are 8 defined positions. In an embodiment, the bottom cover (4) can adjustably slide over the middle cover (3) to a defined 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, or 8th position.
The adjustable assembly (1) comprises at least a first locking arrangement (5) to engage the top cover (2) with the middle cover (3). The first locking arrangement (5) is essentially a multi-step locking arrangement comprising a plurality of slots

(7) and at least a projection (8). In a preferred embodiment, the adjustable assembly (1) comprises locking arrangement (5a, 5b, 5c) to engage the top cover (2) with the middle cover (3). The locking arrangement (5a, 5b, 5c) comprises a plurality of slots (7a, 7b, 7c) and projections (8a, 8b, 8c). Locking arrangement (5a) comprises a plurality of slots (7a) and projection (8a). Locking arrangement (5b) comprises a plurality of slots (7b) and projection (8b). Locking arrangement (5c) comprises a plurality of slots (7c) and projection (8c). The plurality of slots (7a, 7b, 7c) are provided on the outer wall of the top cover (2). The projection (8a, 8b, 8c) is provided on the inner wall of the middle cover (3). The projection (8a) selectively engages with at least a slot of plurality of slots (7a). The projection (8b) selectively engages with at least a slot of plurality of slots (7b). The projection (8c) selectively engages with at least a slot of plurality of slots (7c). The engagement of the projection (8) with at least a slot (7) is positive locking.
In a preferred embodiment, the locking arrangement (5a) comprise 8 slots (7a) and a single projection (8a). In another embodiment, the locking arrangement (5a) comprises 8 or more or less than 8 slots (7a) and one or more projection(s) (8a). In a preferred embodiment, the locking arrangement (5b) comprise 8 slots (7b) and a single projection (8b). In another embodiment, the locking arrangement (5b) comprises 8 or more or less than 8 slots (7b) and one or more projection(s) (8b). In a preferred embodiment, the locking arrangement (5c) comprise 8 slots (7c) and a single projection (8c). In another embodiment, the locking arrangement (5c) comprises 8 or more or less than 8 slots (7c) and one or more projection(s) (8c).
The adjustable assembly (1) comprises at least a second locking arrangement (6) to engage the middle cover (3) with the bottom cover (4). The second locking arrangement (6) is essentially a multi-step locking arrangement comprising a

plurality of slots (7’) and at least a projection (9). In a preferred embodiment, the adjustable assembly (1) comprises locking arrangement (6a, 6b, 6c) to engage the middle cover (3) with the bottom cover (4). The locking arrangement (6a, 6b, 6c) comprises a plurality of slots (7’a, 7’b, 7’c) and projections (9a, 9b, 9c). Locking arrangement (6a) comprises a plurality of slots (7’a) and projection (9a). Locking arrangement (6b) comprises a plurality of slots (7’b) and projection (9b). Locking arrangement (6c) comprises a plurality of slots (7’c) and projection (9c). The plurality of slots (7’a, 7’b, 7’c) are provided on the outer wall of the middle cover (3). The projection (9a, 9b, 9c) is provided on the inner wall of the outer cover (4). The projection (9a) selectively engages with at least a slot of plurality of slots (7’a). The projection (9b) selectively engages with at least a slot of plurality of slots (7’b). The projection (9c) selectively engages with at least a slot of plurality of slots (7’c). The engagement of the projection (9) with at least a slot (7’) is positive locking.
In a preferred embodiment, the locking arrangement (6a) comprise 8 slots (7’a) and a single projection (9a). In another embodiment, the locking arrangement (6a) comprises 8 or more or less than 8 slots (7’a) and one or more projection(s) (9a). In a preferred embodiment, the locking arrangement (6b) comprise 8 slots (7’b) and a single projection (9b). In another embodiment, the locking arrangement (6b) comprises 8 or more or less than 8 slots (7’b) and one or more projection(s) (9b). In a preferred embodiment, the locking arrangement (6c) comprise 8 slots (7’c) and a single projection (9c). In another embodiment, the locking arrangement (6c) comprises 8 or more or less than 8 slots (7’c) and one or more projection(s) (9c).
In an embodiment, the plurality of slots (7a) of the locking arrangement (5a) is closer to the plurality of slots (7b) of the locking arrangement (5b) than to the plurality of slots (7c) of the locking arrangement (5c). In an embodiment, the

plurality of slots (7a) of the locking arrangement (5a) is closer to the plurality of slots (7c) of the locking arrangement (5c) than to the plurality of slots (7b) of the locking arrangement (5b). In an embodiment, the plurality of slots (7b) of the locking arrangement (5b) is closer to the plurality of slots (7c) of the locking arrangement (5c) than to the plurality of slots (7a) of the locking arrangement (5a). In a preferred embodiment, the plurality of slots (7a) of the locking arrangement (5a) is equidistant from the plurality of slots (7a) of the locking arrangement (5b); and is equidistant from the plurality of slots (7c) of the locking arrangement (5c).
In an embodiment, the plurality of slots (7’a) of the locking arrangement (6a) is closer to the plurality of slots (7’b) of the locking arrangement (6b) than to the plurality of slots (7’c) of the locking arrangement (6c). In an embodiment, the plurality of slots (7’a) of the locking arrangement (6a) is closer to the plurality of slots (7’c) of the locking arrangement (6c) than to the plurality of slots (7’b) of the locking arrangement (6b). In an embodiment, the plurality of slots (7’b) of the locking arrangement (6b) is closer to the plurality of slots (7’c) of the locking arrangement (6c) than to the plurality of slots (7’a) of the locking arrangement (6a). In a preferred embodiment, the plurality of slots (7’a) of the locking arrangement (6a) is equidistant from the plurality of slots (7’a) of the locking arrangement (6b); and is equidistant from the plurality of slots (7’c) of the locking arrangement (6c).
In an embodiment, the projections (8a, 8b, 8c) are on the same equatorial plane perpendicular to the axis of the middle cover (3) along its length. In an embodiment, the projections (8a, 8b) are on a first equatorial plane perpendicular to the axis of the middle cover (3) along its length; and projection (8c) is on a second equatorial plane. In an embodiment, the projections (8a, 8c) are on a first equatorial plane perpendicular to the axis of the middle cover (3)

along its length; and projection (8b) is on a second equatorial plane. In an embodiment, the projections (8b, 8c) are on a first equatorial plane perpendicular to the axis of the middle cover (3) along its length; and projection (8a) is on a second equatorial plane. In a preferred embodiment, the projection (8a) if on a first equatorial plane perpendicular to the axis of the middle cover (3) along its length; projection (8b) is on a second equatorial plane; and projection (8c) is on a third equatorial plane.
In an embodiment, the projections (9a, 9b, 9c) are on the same equatorial plane perpendicular to the axis of the bottom cover (4) along its length. In an embodiment, the projections (9a, 9b) are on a first equatorial plane perpendicular to the axis of the bottom cover (4) along its length; and projection (9c) is on a second equatorial plane. In an embodiment, the projections (9a, 9c) are on a first equatorial plane perpendicular to the axis of the bottom cover (4) along its length; and projection (9b) is on a second equatorial plane. In an embodiment, at the projections (9b, 9c) are on a first equatorial plane perpendicular to the axis of the bottom cover (4) along its length; and projection (9a) is on a second equatorial plane. In a preferred embodiment, the projection (9a) if on a first equatorial plane perpendicular to the axis of the bottom cover (4) along its length; projection (9b) is on a second equatorial plane; and projection (9c) is on a third equatorial plane.
In an embodiment, the pitch of the plurality of slots (7) is in the range of 5 mm to 25 mm.
Each slot of the plurality of slots (7, 7’) of the present invention comprises a cavity with an open first end, a closed second end, and a middle section. In an embodiment, the width of the open first end is greater than the width of the closed second end and the width of the middle section is smaller than the width

of open first end and the width of the closed second end. In a preferred embodiment, the ratio of width of open first end: closed second end of the slot (7) is 1.6:1:1.3. In a more preferred embodiment, the ratio of width of open first end: closed second end of the slot (7) is 1.25:0.75:1.
The adjustable assembly (1) of the present invention optionally further comprises a stopper (10) removably attached within the bottom cover (4) to prevent the bottom cover (4) from contacting the ceiling fan motor. In an embodiment, the adjustable assembly (1) further comprises a stopper (10) removably attached within the bottom cover (4) to prevent the bottom cover (4) from contacting the ceiling fan motor.
EXAMPLES
In an exemplary example of the present invention, as shown in Figure 1a, there is provided an adjustable assembly (1) for a mounting system of a ceiling fan comprising a top cover (2); a middle cover (3); and a bottom cover (4). The top cover (2) is essentially the top canopy of a ceiling fan (1); the middle cover (3) is essentially the down rod cover of a ceiling fan (1); and the bottom cover (4) is essentially the bottom canopy of a ceiling fan (1).
As seen in Figure 1b, the middle cover (3) can adjustably slide over the top cover (2), whereby the middle cover (3) engages the top cover (2) via locking arrangement (5a, 5b, 5c) (Fig. 1b) (5b, 5c are located behind and not shown in Fig. 1b). The locking arrangement (5a, 5b, 5c) is essentially a multi-step locking arrangement comprising a plurality of slots (7a, 7b, 7c) (Fig. 1b) (7b, 7c are located behind and not shown in Fig. 1b) provided on the outer wall of the top cover (2) and projections (8a, 8b, 8c) (not shown in Fig. 1b; refer to Fig. 2) provided on the inner wall of the middle cover (3). A first projection (8a) is

located opposite the first plurality of slots (7a); a second projection (8b) is located opposite the second plurality of slots (7b); and a third projection (8c) is located opposite the third plurality of slots (7c) (not shown in Figure 1b; refer to Fig. 2). The projection selectively engages with a counterpart slot of the plurality of slots. The projection can adjustably engage with a counterpart slot of the plurality of slots. The engagement of the projection with a counterpart slot is in the nature of positive locking.
The first (7a), second (7b) and third (7a) of the plurality of slots (7) are arranged equidistant from each other. Consequently, each of the projections (8a, 8b, 8c) are arranged equidistant from each other; and are at a staggered height with respect to each other (not shown in Figure).
As seen in Figure 1b, the bottom cover (4) can adjustably slide over the middle cover (3), whereby the bottom cover (4) engages the middle cover (3) via locking arrangement (6a, 6b, 6c) (Fig. 1b) (6b, 6c are behind and not shown in Fig. 1b). The locking arrangement (6a, 6b, 6c) is essentially a multi-step locking arrangement comprising a plurality of slots (7’a, 7’b, 7’c) (Fig. 1b) (7’b, 7’c are behind and not shown in Fig. 1b) provided on the outer wall of the middle cover (3) and a projection (9a, 9b, 9c) (not shown in Fig. 1b; analogous to 8a, 8b, 8c of Fig 2) provided on the inner wall of the outer cover (4). A first projection (9a) is located opposite the first plurality of slots (7’a); a second projection (9b) is located opposite the second plurality of slots (7’b); and a third projection (9c) is located opposite the third plurality of slots (7’c) (not shown in Figure 1b). The projection selectively engages with a counterpart slot of the plurality of slots. The projection can adjustably engage with a counterpart slot of the plurality of slots. The engagement of the projection with a counterpart slot is in the nature of positive locking.

The first (7’a), second (7’b) and third (7’a) of the plurality of slots (7’) are arranged equidistant from each other. Consequently, each of the projections (9a, 9b, 9c) are arranged equidistant from each other; and are at a staggered height with respect to each other (not shown in Figure).
In figure 1a, 1b, the stopper (10) is also visible, which is essentially a bottom canopy stopper for stopping the bottom canopy from contacting the motor of the ceiling fan, which can otherwise cause damage or cause noise generation.
The adjustable sliding of the top cover (2) over the middle cover (3) via the first locking arrangement (5) can be operated independent of the adjustable sliding of the bottom cover (4) over the middle cover (3) via the second locking arrangement (6) so as to provide a first mode and independently a second mode respectively of adjusting the height of the ceiling fan.
Figure 2a shows an isometric view of the middle cover (3), whereby the hollow inside of the middle cover (3) is visible. A single projection (8a) is visible in figure 2a, which can engage with locking arrangement (5a). In figure 2a, the locking arrangement (6a, 6b, 6c) are also visible, which can engage with projections (9a, 9b, 9c) (not shown). Figure 2b is a top-down view of the middle cover (3) in which each of the three projections (8a, 8b, 8c) are clearly visible.
Figure 3a and 3b shows the schematic of the plurality of slots (7, 7’) of the locking arrangement of the present invention. Fig. 3a depicts a plurality of slots having pitch of 7.5mm, while Fig. 3b depicts a plurality of slots having pitch of 7.5mm. As seen in Fig. 3a and 3b, each slot of the plurality of slots comprises a cavity with an open first end, a closed end, and a middle section. The projection (8, 9) of the locking arrangement selectively engages with a slot of the plurality of slots by positive locking. The material of the slots is sufficiently flexible such

that the projection can be securely engaged within the slot and only upon applied external force, the projection can be disengaged from the slot.
Figure 4a and 4b shows the isometric view and top-down view of the bottom cover (4). As seen in Fig. 4a, a single projection (9a) is visible, which can engage with the locking arrangement (6a) (refer to Fig. 2a). As seen in Fig. 4b, each of three projections (9a, 9b, 9c) are visible, each of which can engage with locking arrangement (6a, 6b, 6c) located on the outer surface of the middle cover (3) (refer to Fig. 2a).
ADVANTAGES OF THE PRESENT INVENTION
The adjustable assembly (1) for a mounting system of a ceiling fan of the present invention provides for a multi-step independent adjustment of the top and/or bottom canopy cover of a ceiling fan, operation of which is easy to perform and does not require any special tools. The system also preserves the aesthetics of ceiling fan assembly and does not require irreversible modification of any parts of the canopy and/or down rod cover.
List of reference numerals:
(1) adjustable assembly for a mounting system of a ceiling fan;
(2) top cover;
(3) middle cover;
(4) bottom cover;
(5); (5a. 5b, 5c) first locking arrangement;
(6); (6a, 6b, 6c) second locking arrangement;
(7; 7’) plurality of slots;
(7a, 7b, 7c) plurality of slots of first locking arrangement (5);

(7’a, 7’b, 7’c) plurality of slots of second locking arrangement (6); (8); (8a, 8b, 8c); (9); (9a, 9b, 9c) projection; (10) stopper.

I/We Claim:
1. An adjustable assembly (1) for a mounting system of a ceiling fan, the
assembly comprising:
- a top cover (2);
- a middle cover (3); and
- a bottom cover (4),
wherein the middle cover (3) can adjustably slide over the top cover (2); and independently, the bottom cover (4) can adjustably slide over the middle cover (3).
2. The adjustable assembly (1) as claimed in claim 1, comprising at least a first locking arrangement (5) to engage the top cover (2) with the middle cover (3); and at least a second locking arrangement (6) to engage the middle cover (3) with the bottom cover (4).
3. The adjustable assembly (1) as claimed in claim 2, wherein at least the first locking arrangement (5) and independently at least the second locking arrangement (6) is a multi-step locking arrangement, the multi-step locking arrangement comprising a plurality of slots (7, 7’) and at least a projection (8, 9).
4. The adjustable assembly (1) as claimed in claim 3, wherein the plurality of slots (7) of at least the first locking arrangement (5) are provided on the outer wall of the top cover (2) to selectively engage with at least a projection (8) provided on the inner wall of the middle cover (3).

5. The adjustable assembly (1) as claimed in claim 4, wherein the plurality of slots (7a, 7b, 7c) of at least the first locking arrangement (5a, 5b, 5c) selectively engages with at least a projection (8a, 8b, 8c).
6. The adjustable assembly (1) as claimed in claim 3, wherein the plurality of slots (7’) of at least the second locking arrangement (6) are provided on the outer wall of the middle cover (3) to selectively engage with at least a projection (9) provided on the inner wall of the bottom cover (4).
7. The adjustable assembly (1) as claimed in claim 6, wherein the plurality of slots (7’a, 7’b, 7’c) of at least the second locking arrangement (6a, 6b, 6c) selectively engages with at least a projection (9a, 9b, 9c).
8. The adjustable assembly (1) as claimed in claim 5 or 7, wherein the projections (8a, 8b, 8c) or (9a, 9b, 9c) are located equidistant from each other.
9. The adjustable assembly (1) as claimed in claim 3, wherein the pitch of the plurality of slots (7, 7’) is between 5mm and 25mm.
10. The adjustable assembly (1) as claimed in claim 3, wherein each slot of the plurality of slots (7, 7’) comprises a cavity with an open first end; a closed second end; and a middle section.
11. The adjustable assembly (1) as claimed in claim 4 or 6, wherein said selective engagement of at least a projection (8) with at least a slot (7) of at least the first locking arrangement (5) is positive locking; and independently, said selective engagement of at least a projection (9) with at least a slot (7’) of at least the second locking arrangement (6) is positive locking.

12. The adjustable assembly (1) as claimed in claim 1, comprising a stopper (10), said stopper (10) is removably attached within the bottom cover (4) to prevent the bottom cover (4) contacting the ceiling fan motor.