Claims:
1. An integral electro-mechanical starting device of a single phase motor comprising:
push button 110 and plug 130 assembly that extends to plug leg 150;
wherein, said plug leg 150 is reduced by a few mm in length;
upon pressing said push button 110 add-on block of start capacitor 170 of start capacitor is turned on and then turns off due to absence of current before strip of relay of contactor coil 160 is turned on, and
said strip of relay of contactor coil 160 are turned off providing high inrush current to motor for starting, thus restricting flow of said high inrush current through said add-on block of start capacitor 170.
2. The starting device of single phase motor of claim 1, wherein said plug leg 150 is reduced by 2mm in length.
3. The starting device of single phase motor of claim 1, wherein plug leg 140 is coupled extension of said plug leg 150 such that both legs are parallel to each other and are operatively connected to move in same direction.
4. The starting device of single phase motor of claim 3, wherein said plug leg 140 is configured to actuate said add-on block of start capacitor 170.
5. The starting device of single phase motor of claim 1, wherein plug leg 150 is configured to actuate strip of relay of contactor coil 160.
6. A method for starting single phase motor, the method comprising the steps of:
reducing length of said plug leg 150 by a few mm;
pressing said push button 110 said add-on block of start capacitor 170 is turned on and then turns off due to absence of current before said strip of relay of contactor coil 160 is turned on;
turning off said strip of relay of contactor coil 160;
providing high inrush current to motor for starting;
restricting flow of high inrush current through add-on block of start capacitor 170.
7. The method of claim 7, wherein said plug leg 150 is reduced by 2mm in length.
8. The starting device of single phase motor, wherein housing 120 envelop a part of said push button 110 and couples said push button 110 with said plug 130.
9. The starting device of single phase motor of claim 1 wherein, push button 110 and plug 130 assembly is housed over relay contactor assembly and said add-on block of start capacitor 170.

, Description:
TECHNICAL FIELD
[0001] The present disclosure refers to a single phase induction motor and, more specifically, an improved starting device for a single phase induction motor.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Single phase motors are not self starting as single phase alternating current (AC) supply is given to the stator winding; an alternating magnetic field is produced around the stator. Because of pulsating nature of the field that reverses for every half-cycle, cannot produce rotation in a stationary rotor. There are various methods available to overcome this problem. Capacitor start and capacitor run is the most commonly used method to start single phase motor because of high starting torque and better power factor. There are two capacitors in this method one is used at the time of the starting and is known as starting capacitor. The other one is used for continuous running of motor and is known as run capacitor.
[0004] At start of the single phase motor high inrush current is generated which can result in welding of add-on block also high inrush current changes based on motor power rating,
[0005] Efforts have been made in the past to overcome problems related to starting of single phase motor. For Example. United States Patent Number 3671830A discloses an invention related to capacitor start single phase motors, with adjustable pull in and drop out points by solid state switching elements and precise operation by sensing accurately the speed of the motor in operation uninfluenced by load conditions and line voltage variations. United States Patent Number 07615579 discloses an invention that uses electronics circuit for starting of single phase induction motor whereas mechanical switching add-on block is used in present disclosure.
[0006] However in the existing circuit, welding add-on block buttons (used for start capacitor switching) occurring during starting of the single phase motors. The problem was mainly due to making of high inrush current during starting of motor. The high inrush current changes based on motor hp rating, hence single add-on block used for start capacitor switching needs to be capable to making inrush current corresponding to the highest hp motor
[0007] Therefore there is need in the art to overcome problem of high inrush current based on power rating of motor.
[0008] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[0009] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about.” Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[00010] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00011] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00012] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.

OBJECTS OF THE INVENTION
[00013] It is an object of the present disclosure to increase life of add-on block as high inrush current is restricted to flow through it.
[00014] It is another object of the present disclosure to reduce cost of add-on block. Since it will carry current for only short period (4-5 seconds) of time.
[00015] It is another object of the present disclosure to provide an add-on block that can be operatively implemented with single phase motors that is not dependent on power rating of the motor.
[00016] It is another object of the present disclosure to avoid damage due to welding of add-on block as high inrush current is restricted.

SUMMARY
[00017] The present disclosure refers to a single phase induction motor and, more specifically, an improved starting device for a single phase induction motor.
[00018] Aspects of the present disclosure pertain to an integral electro-mechanical starting device of a single phase motor comprising, push button 110 and plug 130 assembly that extends to plug leg 150 wherein, said plug leg 150 is reduced by a few mm in length, upon pressing said push button 110 add-on block of start capacitor 170 is turned on before the 160 strip of relay is turned on with absence of current, and subsequently after fraction of time said 160 strip of relay is turned on there by switching the contactor on and providing high inrush current to motor for starting, thus restricting the making of high inrush current through said add-on block of start capacitor 170 and only allowing flow of high inrush current through said add-on block
[00019] In an embodiment, the plug leg 150 is reduced by 2mm in length.
[00020] In an embodiment, the plug leg 140 is coupled extension of said plug leg 150 such that both legs are parallel to each other and are operatively connected to move in same direction.
[00021] In an embodiment, the plug leg 140 is configured to actuate said add-on block of start capacitor 170.
[00022] In an embodiment, the plug leg 150 is configured to actuate strip of relay of contactor coil 160.
[00023] In an aspect, the present disclosure relates to a method for starting single phase motor, the method comprising the steps of, reducing length of said plug leg 150 by a few mm, upon pressing said push button 110 add-on block of start capacitor 170 is turned on before the 160 strip of relay is turned on with absence of current, and subsequently after fraction of time said 160 strip of relay is turned on there by switching the contactor on and providing high inrush current to motor for starting, thus restricting the making of high inrush current through said add-on block of start capacitor 170 and only allowing flow of high inrush current through said add-on block 170.
[00024] In another aspect, the method of present disclosure wherein the plug leg 150 is reduced by 2 mm in length.
[00025] In an embodiment, the starting device of single phase motor wherein, housing 120 envelop a part of said push button 110 and couples said push button 110 with said plug 130.
[00026] In an embodiment, the starting device of single phase motor wherein, push button 110 and plug 130 assembly is housed over relay contactor assembly and said add-on block of start capacitor 170.

BRIEF DESCRIPTION OF THE DRAWINGS
[00027] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[00028] FIG. 1 illustrates an exemplary representation of isometric view of proposed start push button and plug assembly in accordance with an embodiment of present disclosure.
[00029] FIG. 2 illustrates an exemplary representation of relay contactor assembly and add-on block of start capacitor in accordance with an embodiment of present disclosure.

DETAILED DESCRIPTION
[0001] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0002] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[00030] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[00031] The present disclosure refers to a single phase induction motor and, more specifically, an improved starting device for a single phase induction motor.
[00032] Aspects of the present disclosure pertain to an integral electro-mechanical starting device of a single phase motor comprising, push button 110 and plug 130 assembly that extends to plug leg 150 wherein, said plug leg 150 is reduced by a few mm in length, upon pressing said push button 110 add-on block of start capacitor 170 is turned on before the 160 strip of relay is turned on with absence of current, and subsequently after fraction of time said 160 strip of relay is turned on there by switching the contactor on and providing high inrush current to motor for starting, thus restricting the making of high inrush current through said add-on block of start capacitor 170 and only allowing flow of high inrush current through said add-on block 170.
[00033] In an embodiment, the plug leg 150 is reduced by 2mm in length.
[00034] In an embodiment, the plug leg 140 is coupled extension of said plug leg 150 such that both legs are parallel to each other and are operatively connected to move in same direction.
[00035] In an embodiment, the plug leg 140 is configured to actuate said add-on block of start capacitor 170.
[00036] In an embodiment, the plug leg 150 is configured to actuate strip of relay of contactor coil 160.
[00037] In an aspect, the present disclosure relates to a method for starting single phase motor, the method comprising the steps of, reducing length of said plug leg 150 by a few mm, pressing said push button 110 add-on block of start capacitor 170 is turned on before the 160 strip of relay is turned on with absence of current, and subsequently after fraction of time said 160 strip of relay is turned on there by switching the contactor on and providing high inrush current to motor for starting, thus restricting the making of high inrush current through said add-on block of start capacitor 170 and only allowing flow of high inrush current through said add-on block 170.
[00038] In another aspect, the method of present disclosure wherein the plug leg 150 is reduced by 2mm in length.
[00039] In an embodiment, the starting device of single phase motor wherein, housing 120 envelop a part of said push button 110 and couples said push button 110 with said plug 130.
[00040] In an embodiment, the starting device of single phase motor wherein, push button 110 and plug 130 assembly is housed over relay contactor assembly and said add-on block of start capacitor 170.
[00041] It would be appreciated that although embodiments of the present disclosure are explained in terms of single phase motor induction motor, scope of the present disclosure is not limited to the same in any way whatsoever, and any kind of device incorporating the claimed features/elements of the present disclosure is well within the scope of the present disclosure.
[00042] FIG. 1 illustrates an exemplary representation of isometric view of proposed start push button and plug assembly in accordance with an embodiment of present disclosure. In an aspect, the device 100 can include a push button 110 and a plug 130 assembly. In an aspect, a housing 120 can be used for coupling the push button 110 and the plug 130. In another aspect a plug leg 140 can be used for actuating (also interchangeably referred to as starting hereinafter) an add-on block of start capacitor. In yet another aspect, a plug leg 150 can be used for actuating a contactor coil.
[00043] In an embodiment, the plug leg 140 is connected parallel to the plug leg 150 such that, upon pressing the push button 110 both plug legs move in same direction.
[00044] FIG. 2 illustrates an exemplary representation of relay contactor assembly and add-on block of start capacitor in accordance with an embodiment of present disclosure. In an aspect a strip of relay of contactor coil 160 can be used for actuating contactor coil. In another aspect an add-on block of start capacitor 170 can be used for actuating start capacitor.
[00045] In an embodiment, the plug legs 140 and 150 are coupled such that, upon pressing the push button 110 the plug leg 140 can actuate the start strip of relay of contactor coil 160 and the plug leg 150 can be used to actuate the add-on block of start capacitor 170. In an embodiment, length of the plug leg 150 can be reduced by 2mm to allow actuation and closing of the add-on block of start capacitor 170 before switching contactor is turned on such that high inrush current drawn by the add-on block of start capacitor 170 is restricted.
[00046] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[00047] The present disclosure provides starting device of single phase motor to increase life of add-on block as high inrush current is restricted to flow through it.
[00048] The present disclosure provides starting device of single phase motor to reduce cost of add-on block. Since it will carry current for only short period (4-5 seconds) of time.
[00049] The present disclosure provides starting device of single phase motor to provide an add-on block that can be operatively implemented with single phase motors that is not dependent on power rating of the motor.
[00050] The present disclosure provides starting device of single phase motor to avoid damage due to welding of add-on block as high inrush current is restricted.