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
An adaptor for connecting a load to an external supply
APPLICANTS
Crompton Greaves Limited, CG House, Dr Annie Besant Road, Worli, Mumbai 400 030, Maharashtra, India, an Indian Company
Inventor
Paresh Jadhav of Crompton Greaves Ltd, Fans Division, Bethora, Goa, Maharashtra,
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 invention relates to an adaptor for connecting a load to an external supply. BACKGROUND OF THE INVENTION
An adaptor 1 for connecting a load, for example a fan, to an external supply is shown in Figs 1 and 2, wherein Fig 1 is an isometric view and Fig 2 is an exploded view of the adaptor 1. Such an adaptor 1 comprises of three barrels 2, 3, 4 each held within respective channels 5, 6, 7 casted in the adaptor 1. The barrels 2, 3, 4 are made up of an electrically conducting material such as steel, brass etc. Two of the barrels 2, 4 and their respective channels 5, 7 are open at both ends whereas one barrel 3 and its respective channel 6 is blocked at the external supply end. Threaded holes 8 are provided on the top surface of the barrels 2, 3, 4 (near the end portions thereof) and corresponding holes 9 in the channels 5, 6, 7 to provide access to the holes 8 in the barrels for inserting screws 10 therein. Electrical wires are inserted in the barrels 2, 3, 4 through their open end portions and held tightly therein by means of screws 10.
For use of the adaptor 1 in a fan motor assembly, a capacitor holder 11 for holding a fan capacitor (not shown) is provided (casted) integrated to the adaptor 1. At the time of assembling the fan motor assembly, the two capacitor leads from the fan capacitor held in the capacitor holder are shorted with the main and auxiliary leads of the fan motor assembly respectively. Thereafter, the following leads are manually inserted into the two barrels 2, 4 which are held in channels open at both ends: the shorted capacitor and main lead of the fan motor assembly, and a common lead from the motor. At the other respective open ends, live (in the barrel containing shorted leads) and neutral (in the barrel containing common lead) wires are inserted manually at the user site. While the wires are being held within the respective barrels 2, 4, screws 10 are entered into the corresponding barrel holes 8 and tightened by means of

a pneumatic gun. In the barrel 3 open at one end and blocked at the power supply end side from where the live and neutral wires are inserted, the shorted second capacitor and auxiliary lead from the fan motor assembly is inserted manually and tightened by a screw as described above by means of a pneumatic gun.
Use of above adaptor 1 is labour intensive, time consuming and cumbersome, more particularly, at the time of assembling the fan motor assembly, which involves holding the wires in the barrels 2, 3, 4 properly, screw alignment in the respective holes 8, lifting a pneumatic gun and accurately placing it on the screws 10 and finally using the pneumatic gun properly ensuring that the screw 10 are not over-tightened which may damage the holes 8 and/or the barrels 2, 3, 4. OBJECTS OF THE INVENTION
An object of the invention is to provide an adaptor for connecting a load to an external supply which is easy to use.
Another object of the invention is to provide an adaptor for connecting a load to an external supply wherein insertion of electrical wires therein and providing a tight hold thereto within the adaptor is quick and easy.
Another object of the invention is to provide an adaptor for connecting a load to an external supply, which does not involve screws for tightly holding the electrical wires therein. DETAILED DESCRIPTION OF THE INVENTION
According to the invention, there is provided an adaptor for connecting a load to an external supply, the adaptor comprising a plurality of adaptor units held adjacently to each other in a holding sheet, each adaptor unit comprising a housing defined by a base a pair of opposite side walls a back wall and a front wall;a partition member extending into the housing from the inner surface of the back wall for

forming a pair of channels in the housing on the either sides of the partition member the partition member maintaining a clearance with the base; a lug each extending into each channel from the inner surface of the back wall, the lugs being disposed slightly above the base; a stopper each extending into the channels from the inner surface of the respective sidewalls above the respective lugs 34, 35 and maintaining a clearance with the partition member; an electrically conducting metal strip having a spring back action, a middle portion of which being seated on the base and the opposite end portions thereof folded over the respective lugs such that the end portions of the metal strip remaining disposed above the middle portion of the metal strip and held against the respective stoppers; at least one hole on each sidewall opening in the space between the respective lugs and stoppers for inserting a wire there through in the housing; a shaft disposed in each channel such that one end portion of the shaft extending beyond the height of the back wall and the other end portion resting on the end portion of the metal strip such that upon depressing the shaft, the end portion of the strip being pushed towards the base thereby creating a space between the stopper and end portion of the strip wherein at least one electrical wire being inserted through the hole provided on the sidewall and upon releasing the shaft, the end portion of the strip being retracted back due to the spring back characteristic of the metal strip thereby closing the said space for trapping the wire therein for providing a tight electrical contact between the wires inserted in the holes of the adaptor unit.
According to the invention, there is also provided an adaptor for connecting a load to an external supply the adaptor comprising a plurality of adaptor units held adjacently to each other in a holding sheet, each adaptor unit comprising a housing defined by a base, a pair of opposite side walls a back wall and a front wall; a partition wall held between the side walls for partitioning the housing into a pair of

sub housings; a partition member extending into each sub housings from the partition
wall for forming a pair of channels therein on the either sides of each partition
members, the partition members maintaining a clearance with the base; a lug each
extending into each channel from the partition wall, the lugs being disposed slightly
above the base; a stopper each extending into the channels from the inner surface of
the respective sidewalls above the respective lugs and maintaining a clearance with
the partition member; an electrically conducting flat sheet seated on the base and
extending into both sub housings; an electrically conducting metal strip having a
spring back action disposed in each sub housings, the metal strips being electrically
connected to the flat sheet by way of the middle portion of the strips being seated on
the flat sheet and the corresponding opposite end portions being respectively folded
over the lugs in the channels of the respective sub housings such that the end portions
of each metal strip remaining disposed above the corresponding middle portions
thereof and held against the stoppers in the respective channels of the sub housings; a
pair of holes on each sidewall opening in the space between the respective lugs and
stoppers for inserting a wire there through in the housing; a shaft disposed in each
channel such that one end portion of the shaft extending beyond the height of the back
wall and the other end portion resting on the end portion of the metal strip such that
upon depressing the shaft, the end portion of the strip being pushed towards the base
thereby creating a space between the stopper and end portion of the strip wherein at
least one electrical wire being inserted through the hole provided on the sidewall; and
upon releasing the shaft, the end portion of the strip being retracted back due to the
spring back characteristic of the metal strip thereby closing the said space for trapping
the wire therein for providing a tight electrical contact between the wires inserted in
the holes of the adaptor unit.

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 3 is an isometric view of an adaptor for connecting a fan assembly to an external supply.
Fig 4 is an isometric view of an adaptor unit of an adaptor for connecting a fan assembly to an external supply.
Fig 5 is an exploded view of the adaptor unit of an adaptor for connecting a fan assembly to an external supply.
Fig 6 is an isometric view of the adaptor unit of an adaptor for connecting a fan assembly to an external supply according to another embodiment.
Fig 7 is an exploded view of the adaptor unit of an adaptor for connecting a fan assembly to an externa! supply according to another embodiment.
Fig 3 is an isometric view of an adaptor 15 for connecting a fan assembly to an external supply. The adaptor 15 comprises of three adaptor units 16, 17, 18 slidingly held adjacently to each other on a holding sheet 19 usually made up of an electrically non conducting material such as plastic. A capacitor holder 20 is provided extending from the bottom surface of the holding sheet 19 to hold a fan capacitor (not shown). Usually, the holding sheet 19 and capacitor holder 20 are cast from a same die and held onto the fan assembly. Wires from the fan motor assembly and fan capacitor are inserted into the holes at one side 21 (set as factory end side) of the adaptor units 16, 17, 18 during the fan assembly as described below. Wires from external supply are inserted into the holes at other side 22 (user site).
Figs 4 & 5 are respectively an isometric and exploded views of an adaptor unit 16 of an adaptor 15 for connecting a fan assembly to an external supply. The adaptor

unit 16 is casted out of an electrically non-conducting and fire retardant plastic. A housing is defined within the adaptor unit by a base 25, a pair of opposite side walls
26 & 27, a back wall 28 and a corresponding front wall 29. The front wall 29 is
detachable and snap fitted to the edges of the sidewalls 26 & 27. The back wall 28 is
provided integrated to the edges of sidewalls 26 & 27. The base 25 and the front 29
and back 28 walls are usually provided flat. The sidewalls 26 & 27 narrow down
upwardly away from the base 25 such that the space between the two sidewalls 26 &
27 at its lower and upper ends is not similar. The space at lower ends is more than that
at upper ends. A partition member 31 extends into the housing, parallel to the
sidewalls 26 & 27, from the inner surface of the back wall 28 thereby forming a pair
of channels 32 & 33 in the housing on its either sides. The partition member 31
extends from the entire inner surface of the back wall 28 except at the surface
proximal to the base 25 so as to maintain a clearance therewith. A lug 34 & 35 is
disposed in each of the channels 32 & 33 extending from the respective inner surfaces
of the back wall 28. The lugs 34 & 35 are typically equal sized and wedge shaped and
extending into the housing from the inner surface of the back wall 28 slightly above
the base 25 so as to maintain a clearance therewith. The primary function of the lugs
34 & 35 is to facilitate and maintain a fold of an electrically conducting metallic strip
36 folded there over. The metallic strip 36 is made up of materials such as Phosphor
bronze so as to have a spring back action therein. The edges of the end portions 37 &
38 of the metallic strip 36 are optionally provided serrated. The metallic strip 36, at its
manufacturing site, is folded at its end portions 37 & 38 such that they remain
disposed above the middle portion 39 and maintaining a clearance therewith. The size
of the fold corresponds to that of the thickness of the lugs 34 & 35. The middle
portion 39 of the metallic strip 36 is seated on the inner surface of the base 25 below

the partition member 31 and the lugs 34 & 35 such that the folded end portions 37 &
38 of the metallic strip 36 remain folder over the Jugs 34 & 35 in the respective
channels 32 & 33. The end portions 37 & 38 of the metallic strip 36 are held against a
stopper 40 & 41 disposed in the respective channels 32 & 33 above the lugs 34 & 35.
Each stopper 40 & 41 extends into the respective channel 32 & 33 from the inner
surface of the respective sidewalls 26 & 27 above the respective lugs 34 & 35 and
maintaining a clearance with the partition member 31. The objective is to inhibit the
further movement of the end portions 37 & 38 of the metallic strip 36 away from the
middle portion 39 thereof. Typically, the span of the stoppers 40 & 41 is provided less
than that of the end portions 37 & 38. Further, a shaft 42 is disposed in each channel
32 & 33 to push the end portions 37 & 38 of the metallic strip 36 in the respective
channels 32 & 33 towards the middle portion 39 of the strip 36. In the rest position.
the lower end 43 of the shaft 42 simply rests on the end portions 37 & 38 of the
metallic strip 36 in the channels 32 & 33 and the upper end 44 of the shaft 42 extends
beyond the height of the back wall 28. During the fan assembly, the main lead from
the fan motor assembly and one of the capacitor leads are joined/shorted manually.
Similarly, the auxiliary lead from the fan motor assembly and the other capacitor
leads are also joined/shorted manually. Subsequently, the shaft 42 at one side 21 (set
as factory end side) of one of the adaptor unit 16 is depressed to push the end portion
37 of the metallic strip in the respective channel 32 thereby creating a space between
the stopper 40 and end portion 37 of the metallic strip 36. The shorted main and
capacitor lead is inserted into this space through a hole 45 provided on the sidewall 26
between the respective lug 34 and the stopper 40. The shaft 42 is subsequently
released to allow the end portion 37 to retract back due to the spring back action of
the metallic strip 36. Thus the inserted leads are trapped and held tightly in the

housing between the end portion 37 and the stopper 40. Owing the fact that the end portion 37 of the metallic strip 36 is serrated, the trap is rendered tighter. A corresponding hole 46 is also provided at the opposite sidewall 27 of the adaptor unit 16 through which the live wire of an external supply is inserted and held tightly in the other channel at the user site in the same fashion as described above. Thus the live wire (of the external supply) and the shorted leads of the fan motor assembly and capacitor are electrically connected since both are connected to the opposite end portions 37 & 38 of an electrically conducting metallic strip. Similarly, a common wire from the fan motor assembly is inserted into the second adaptor unit 17 at the same side where the primary leads inserted i.e. factory end side. A neutral wire at the user site is inserted and held tightly at the corresponding opposite side of the second adaptor unit 17. Thereafter, the other capacitor and auxiliary fan motor assembly leads are shorted and inserted into the third adaptor unit 18 at the factory end side 21. The hole on the opposite side wall of the third adaptor unit 18 is either blocked or not provided at all.
The front and back walls may be fixed to the edges of the sidewalls either permanently or detachably. The permanent fixing of front and back walls is not limited to being integrated and may include other means of permanent fixing such as by glue etc. Similarly, the detachable fixing may not be limited to snap fitting and involve other known means. The base and the front and back walls may not be necessarily flat. There may or may not be a constriction at the centre of the housing formed by narrowing side walls. The space between the two sidewalls at its lower and upper ends may or may not be similar. The partition member may extend slantingly along the inner surface of the back wall thereby leaving the sizes of the channels on its either sides unequal. Lugs may or may not be equal sized and wedge shaped. The

stopper may be held straight rather than slantingly. The span of the stopper may not be necessarily smaller than that of the end portions of the metallic strip and may be of any size which allows the functions of depression of the end portions by the shaft smoothly.
According to the invention, an adaptor is provided which is screw less and facilitates easy insertion of leads of electrical wires therein. Such an adaptor is extremely time saving, more particularly, when used in a fan assembly as described above. Moreover, no other equipment, such as a pneumatic gun, is required for using the above adaptor thereby rendering the job of inserting the leads of electrical wires in the adaptor less cumbersome.
According to an another embodiment, figs 6 & 7 are respectively an isometric and exploded views of an adaptor unit 50 of an adaptor 15 for connecting a fan assembly to an external supply. The adaptor unit 50 is casted out of an electrically non-conducting and fire retardant plastic. A housing is defined within the adaptor unit 50 by a base 51, a pair of opposite side walls 52 & 53, a back wall 54 and a corresponding front wall 55. The front 55 and back 54 walls are detachable and snap fitted to the edges of the sidewalls 52 & 53. The base 51 and the front 55 and back 54 walls are usually provided flat. The sidewalls 52 & 53 narrow down upwardly away from the base 51 such that the space between the two sidewalls 52 & 53 at its lower and upper ends is not similar. The space at lower ends is more than that at upper ends. A partition wall 56 is provided in the housing and held between the sidewalls 52 & 53 and maintaining a clearance with the base 51. The partition wall 56 forms a pair of sub housings on its either sides in the housing. A partition member 57 & 58 each extends into both the sub housings, parallel to the sidewalls 52 & 53, from the surface of the partition wall 56 forming a pair of channels 59, 60 & 61, 62 at its either sides.

The partition members 57 & 58 maintain a clearance with the base 51. A lug 63, 64, 65 (not shown), 66 (not shown) is provided disposed in each of the channels 59-62 extending therein from the partition wall 56 and maintaining a clearance with the base 51. The primary function of the lugs 63-66 is to facilitate and maintain a fold of the electrically conducting metallic strips 67 & 68 folded there over. The metallic strips 67 & 68 are made up of materials such as Phosphor bronze so as to have a spring back action therein. The edges of the end portions 69-72 of the metallic strips 67 & 68 are optionally provided serrated. The metallic strips 67 & 68, at its manufacturing site, are folded at its end portions 69, 70 & 71, 72 such that the end portions 69, 70 & 71, 72 remain disposed above the respective middle portions 73 & 74 and maintaining a clearance therewith. The size of the fold corresponds to that of the thickness of the lugs 63-66. The middle portions 73 & 74 of the metallic strips 67 & 68 are seated on an electrically conducting flat sheet 75 seated on the inner surface of the base 51 and extending into both sub housings such that the folded end portions 69, 70 & 71, 72 of the metallic strip 67 & 68 respectively remain folder over the respective lugs 63, 64 & 65, 66 in the respective channels 59, 60 & 61, 62 and the metallic strips 67 & 68 are electrically connected to the flat sheet 75. The end portions 69-72 of the metallic strips 67 & 68 are held against a stopper 76-79 each disposed in the respective channels 59-62 above the respective lugs 63-66 respectively. Each stopper 76-79 extends into the respective channels 59-62 from the inner surface of the respective sidewalls 52 &, 53 above the respective lugs and maintaining a clearance with the partition member 57 & 58. The objective is to inhibit the further movement of the end portions 69-72 of the metallic strips 67 & 68 away from the respective middle portions 73 & 74. Typically, the span of the stoppers 76-79 is provided less than that of the of the end portions 69-72. Further, a shaft 80-83 is disposed in each channel 59-

62 to push the end portions 69-72 of the metallic strips 67 & 68 in the respective
channels 59-62 towards the respective middle portions 73 & 74. In the rest position,
the lower end portions 84-87 of the shafts 80-83 simply rests on the end portions 69-
72 and the upper end portions 88-91 of the shafts 80-83 extends beyond the height of
the partition wall 56. During the fan assembly, one of the shaft 80 at one side 21 (set
as factory end side) of one of the adaptor unit 50 is depressed to push the end portion
69 of the metallic strip 67 thereby creating a space between the stopper 76 and end
portion 69 of the metallic strip 67. The main lead from the fan motor assembly is
inserted into this space through a hole 92 provided on the sidewall 52 between the
respective lug 63 and the stopper 76. The shaft 80 is subsequently released to allow
the end portion 69 to retract back due to the spring back action of the metallic strip 67.
Thus the inserted lead is trapped in the housing and held tightly between the end
portion 69 and the stopper 76. Owing the fact that the end portion 69 of the metallic
strip 67 is serrated, the trap is rendered tighter. Similarly, one of the capacitor lead is
inserted into the channel 61 of the other sub housing through a hole 93 (not shown)
provided in the adjacent portion of the sidewall 52 between the respective lug 65 and
the stopper 78 . Although, the capacitor and motor fan leads are inserted through
different holes 92 & 93 and electrically connected to different metallic strips 67 & 68,
they remain electrically shorted since both the metallic strip 67 & 68 are electrically
connected to a single electrically conducting flat sheet 75. Corresponding holes 94 &
95 are also provided at the opposite sidewall 53 of the adaptor unit 50. However, one
of the holes 95 may be provided blocked. Through the other hole 94, at the user site, a
live wire of an external supply is inserted and held tightly in the corresponding
channel 60 in the same fashion as described above. Thus the live wire (of the external
supply) and the leads of the fan motor assembly and capacitor are electrically

connected to the electrically shorted main fan motor assembly and capacitor leads. Similarly, the other capacitor and auxiliary fan motor assembly leads are inserted into the respective holes of the third adaptor unit at the factory end side of the adaptor where the primary and capacitor leads are inserted in the first adaptor unit. The corresponding holes on the opposite side wall of the third adaptor unit is either blocked or not provided at all. Similarly, a common wire from the fan motor assembly is inserted into one of the holes of the second adaptor unit at the factory end side 21. The other hole is provided blocked or not provided at all. A neutral wire is inserted in one of the holes at the corresponding opposite side (other hole blocked or not provided at all) of the second adaptor unit at the user site. Thus the neutral wire (of the external supply) and the common lead of the fan motor assembly are electrically connected.
The front and back walls may be fixed to the edges of the sidewalls either permanently or detachably. The permanent fixing of front and back walls may be by means of they being manufactured integrated to the sidewalls or through other means such as fixing by glue etc. Similarly, the detachable fixing may not be limited to snap fitting and involve other known means. The base and the front and back walls may not be necessarily flat. There may or may not be a constriction at the centre of the housing formed by narrowing side walls. The space between the two sidewalls at its lower and upper ends may or may not be similar. The partition member may extend slantingly along the inner surface of the back wall thereby leaving the sizes of the channels on its either sides unequal. Lugs may or may not be equal sized and wedge shaped. The stopper may be held straight rather than slantingly. The width of the stopper may not be necessarily smaller than that of the end portions of the metallic strip and may be of

any size which allows the functions of depression of the end portions by the shaft smoothly.
It will also be appreciated by a person skilled in the art that there may also be used an adaptor comprising a combination of adaptor units of both the above described embodiments.
According to the invention, an adaptor is provided which is screw less and facilitates easy insertion of leads of electrical wires therein. Moreover, the need for electrically shorting leads from different electrical devices, such as fan motor assembly and a capacitor, before the leads are inserted into the adaptor unit is eliminated by way of providing two different holes in the adaptor unit for inserting a single lead into the adaptor unit through each hole. The leads are electrically shorted internally within the housing of the adaptor unit by way of the arrangement described above. Such an adaptor is extremely time saving, more particularly, when used in a fan assembly as described above. Moreover, no other equipment, such as a pneumatic gun, is required for using the above adaptor thereby rendering the job of inserting the leads of electrical wires in the adaptor less cumbersome.
Although, the above embodiments are described with respect to a fan motor assembly., the use of the adaptor it is not intended to be limiting and any other electrical device can be connected to an external supply there through.
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 scope of the invention as defined in the appended claims.

We claim:
]. An adaptor for connecting a load to an external supply, the adaptor comprising a plurality of adaptor units held adjacently to each other in a holding sheet, each adaptor unit comprising
• a housing defined by a base a pair of opposite side walls a back wall and a front wall;
• a partition member extending into the housing from the inner surface of the back wall for forming a pair of channels in the housing on the either sides of the partition member the partition member maintaining a clearance with the base;
• a lug each extending into each channel from the inner surface of the back wall, the lugs being disposed slightly above the base;
• a stopper each extending into the channels from the inner surface of the respective sidewalls above the respective lugs and maintaining a clearance with the partition member;
• an electrically conducting metal strip having a spring back action, a middle portion of which being seated on the base and the opposite end portions thereof folded over the respective lugs such that the end portions of the metal strip remaining disposed above the middle portion of the metal strip and held against the respective stoppers;
• at least one hole on each sidewall opening in the space between the respective lugs and stoppers for inserting a wire there through in the housing;

• a shaft disposed in each channel such that one end portion of the shaft extending beyond the height of the back wall and the other end portion resting on the end portion of the metal strip such that
upon depressing the shaft, the end portion of the strip being pushed towards the base thereby creating a space between the stopper and end portion of the strip wherein at least one electrical wire being inserted through the hole provided on the side wall; and
upon releasing the shaft, the end portion of the strip being retracted back due to the spring back characteristic of the metal strip thereby closing the said space for trapping the wire therein for providing a tight electrical contact between the wires inserted in the holes of the adaptor unit.
2. The adaptor as claimed in claim 1, wherein the front wall is provided detachable and snap fitted to the edges of the respective side wall.
3. The adaptor for connecting a load to an external supply, the adaptor comprising a plurality of adaptor units held adjacently to each other in a holding sheet, each adaptor unit comprising

• a housing defined by a base, a pair of opposite side walls a back wall and a front wall;
• a partition wall held between the side walls for partitioning the housing into a pair of sub housings;
• a partition member extending into each sub housings from the partition wall for forming a pair of channels therein on the either sides of each

partition members, the partition members maintaining a clearance with the base;
• a lug each extending into each channel from the partition wall, the lugs being disposed slightly above the base;
• a stopper each extending into the channels from the inner surface of the respective sidewalls above the respective lugs and maintaining a clearance with the partition member;
• an electrically conducting flat sheet seated on the base and extending into both sub housings;
• an electrically conducting metal strip having a spring back action disposed in each sub housings, the metal strips being electrically connected to the flat sheet by way of the middle portion of the strips being seated on the flat sheet and the corresponding opposite end portions being respectively folded over the lugs in the channels of the respective sub housings such that the end portions of each metal strip remaining disposed above the corresponding middle portions thereof and held against the stoppers in the respective channels of the sub housings;
• a pair of holes on each sidewall opening in the space between the respective lugs and stoppers for inserting a wire there through in the housing;
• a shaft disposed in each channel such that one end portion of the shaft extending beyond the height of the back wall and the other end portion resting on the end portion of the metal strip such that

upon depressing the shaft, the end portion of the strip being pushed towards the base thereby creating a space between the stopper and end portion of the strip wherein at least one electrical wire being inserted through the hole provided on the sidewall; and
upon releasing the shaft, the end portion of the strip being retracted back due to the spring back characteristic of the metal strip thereby closing the said space for trapping the wire therein for providing a tight electrical contact between the wires inserted in the holes of the adaptor unit.
4. The adaptor as claimed in claims 1 and 3 comprises of three adaptor units held slidingly on a holding sheet.
5. The adaptor as claimed in claims 1 and 3 is used to connect a fan motor assembly to an external supply.
6. The adaptor as claimed in claim 5, wherein a capacitor housing is attached to the adaptor for holding a fan capacitor.
7. The adaptor as claimed in claim 3, wherein the front and back walls are provided detachable and snap fitted to the edges of the respective side walls.
8. The adaptor as claimed in claims 1 and 3, wherein the sidewalls narrow down upwardly away from the base such that the space between the two sidewalls at its lower ends is more than that at upper ends.
9. The adaptor as claimed in claims 1 and 3, wherein the lugs are equal sized and wedge shaped.
10. The adaptor as claimed in claims 1 and 3, wherein the metallic strips are made up of Phosphor bronze.

11. The adaptor as claimed in claims 1 and 3, wherein the end portions of the metallic strips are serrated.
12. The adaptor as claimed in claims 1 and 3, wherein selected holes in the adaptor units are provided blocked.
13. An adaptor for connecting a load to an external supply, the adaptor comprising a combination of adaptor units of claims 1 and 3 held adjacently to each other in a holding sheet.