AU2015310602A1

AU2015310602A1 - Sports training ball

Info

Publication number: AU2015310602A1
Application number: AU2015310602A
Authority: AU
Inventors: Venkata Parthasaradhi PEMMARAJU
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-09-06
Filing date: 2015-08-31
Publication date: 2017-01-19
Also published as: WO2016034998A1

Abstract

A sports training ball especially used in cricket batting practice, designed to train a batsman for practicing complex wicket training deliveries as cutters, swing deliveries, spin deliveries etc. which does not require a professional expertise to throw at a batsman intended to practice a desired and a controlled deviation off the surface. The sports training ball is similar to real cricket ball in size and shape and produces same bat feel. This specialty sports training ball replaces the existing bowling machines to attain desired swing, cutters and spin deliveries when thrown by a bowler without any expertise.

Description

WO 2016/034998 PCT/IB2015/056590

TITLE OF THE INVENTION

SPORTS TRAINING BALL

Technical Field of the Invention [001] The present invention relates to a sports training ball. More particularly, to a sports training ball designed to train a batsman for practicing complex wicket taking deliveries in cricket like cutters, swing deliveries, spin deliveries etc.

Background of the Invention [002] Every batsman improves his batting skills in his net practice. However it is not sufficient to improve his skill level as he will not get quality bowlers who can bowl complex wicket taking deliveries like cutters, swing, spin etc., consistently. Without such challenging practice it is difficult for any batsman to raise his standards. Bowling Machine is the only equipment available which can be used to bowl such complex wicket taking deliveries. However bowling machines are expensive and less affordable. Moreover a batsman will miss the real bowling action feel with bowling machine practice.

[003] One solution to this problem is to provide a specialty sports training ball designed as an alternative to bowling machine, used by anybody to throw swing, cutters and spin deliveries in a desired and controlled manner without any expertise. A batsman will get challenging batting practice with sports training ball which weighs almost same as real cricket ball and produces similar bat feel on hitting the bat.

[004] Sports ball constructions of various types are utilized throughout the prior art utilizing various openings and the like to permit ease of deflection in air when the sports ball in used. Such sports ball is exemplified in the U.S. Pat. No. 5,280,906 to Vitale Pasquale M, wherein a 1 PCT/IB2015/056590 WO 2016/034998 sports ball utilizes aerodynamically roughened surfaces in the nature of intersecting grooves to provide trajectory of the game ball in a deflecting manner.

[005] U.S. Pat. No. 4,930,776 to Newcomb, et al. sets forth a sports ball wherein a translucent plastic material is utilized formed with openings there through.

[006] U.S. Pat. No. 4,616,827 to Bergland sets forth a sports ball utilizing opposed parabolic surfaces about a cylindrical equator.

[007] None of the prior art balls provide desired and controlled deviation after pitching on the ground and pertained to deviation swing of ball only in air. There is a need of a sports training ball which can re create wicket taking deliveries providing challenging practice to a batsman. A batsman should get to practice both swing in air and off the pitch deviation.

Brief Summary of the Invention [008] The following presents a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is directed towards a sports training ball especially used in cricket for batting practice.

[009] It is therefore an object of the present invention to provide a specialty sports training ball replacing the existing bowling machines to attain desired swing, cutters, spin deliveries when thrown by a bowler without any expertise.

[010] It is another object of the present invention to determine appropriate overall mass, appropriate outer surface and appropriate shape, appropriate material, appropriate elastic potential energy, appropriate imposed kinetic energy of the sports training ball.

[011] It is another object of the present invention to provide a challenging batting practice to a batsman by throwing a sports training ball by a bowler without any expertise. 2 PCT/IB2015/056590 WO 2016/034998 [012] It is another object of the present invention to provide a sports training ball accommodating a plurality of apertures, a plurality of dimples, plurality of inserts etc. at one or more locations within the ball to alter the outer surface of the ball on one or both of the hemispheres.

[013] According to a first aspect of the present invention, a sports training ball which can deviate towards or away from the batsman after pitching on the ground when thrown straight in air is disclosed. The ball consists of two hemispheres of differential weights and there exists a system for determining a desired deviation of the ball with one or more means. The means of determination include but not limited to an appropriate overall mass, an appropriate outer surface, an appropriate shape, an appropriate material that is to be used, an elastic Potential Energy (PE) of the material that is to be selected and an imposed Kinetic Energy (KE) to ascertain the desired deviation to the sports training ball.

[014] In accordance with the first aspect of the present invention, the sports training ball disclosed is essentially used for practicing cricket.

[015] In accordance with the first aspect of the present invention, the desired deviation of the sports training ball is attained towards the hemisphere having more weight.

[016] In accordance with the first aspect of the present invention, the desired deviation of the sports training ball can be pre-decided before the throw.

[017] In accordance with the first aspect of the present invention, the sports training ball is characterized to produce a desired swing in air by adopting one or more aerodynamic principles and by altering the outer surface of the ball.

[018] In accordance with the first aspect of the present invention, the outer surface of the sports training ball is altered by using a plurality of apertures on one or both of the hemispheres or a 3 PCT/IB2015/056590 WO 2016/034998 plurality of dimples on one or both of the hemispheres or a rough surface on one side or a smooth surface on an opposite side.

[019] In accordance with the first aspect of the present invention, deviation in air due to aerodynamics can be created other than deviating from the ground after pitching due to the differential weights of the hemispheres. Furthermore, the direction of the deviation in air and the direction of deviation after pitching can be of inwards or outwards to create deliveries such as an in-swing or an out-swing or an in-swing seam out or an out-swing seam in.

[020] In accordance with the first aspect of the present invention, the differential weights of the sports training ball is created by having one or more of a plurality of inserts at one or more locations within one or both of the hemispheres of the sports training ball or an increased weight and/or volume of a fill material in at least one of a hemisphere.

[021] In accordance with the first aspect of the present invention, the differential weight in the sports training ball can also be created by an air bubble and/or one or more apertures by extracting material from inside or outside of the hemisphere or creating a provision during a step of reactive injection moulding, to facilitate volume and/or weight increase or decrease or a reduced size of a hemisphere of the ball surface and/or the inserts, fill material, air bubbles, apertures ascertain the sports training ball to vary asymmetrically to leverage the desired deviation.

[022] In accordance with the first aspect of the present invention, an angle of the desired deviation is designed to follow cricket bowling dynamics. The ball is thrown at higher speeds in air, to attain a deviation after pitching on the ground and is simultaneously thrown at lower speeds with loop in air, to attain a deviation after pitching on the ground.

[023] In accordance with the first aspect of the present invention, the angle of the desired deviation is achieved by factors such as a material that is used or the surface of the ball or the elastic PE of the ball or the imposed KE and the mass of the ball. 4 PCT/IB2015/056590 WO 2016/034998 [024] In accordance with the first aspect of the present invention, the materials used for making the sports training ball that to attain the desired deviation is by using at least one or combination of a cork or wood or plastic or polyurethane and rubber.

[025] In accordance with the first aspect of the present invention, the angle of deviation of the sports training ball after pitching is measured for combination of factors and materials used and is calculated in one or more of the ways like dropping the ball from a pre-determined height above the ground or throwing the ball at a pre-determined speed using ball throwing devices and the results attained are calculated to attain a standard angle of deviation.

[026] According to a second aspect of the present invention, a method for determining a desired deviation for manufacturing of a sports training ball having two hemispheres of differential weights is disclosed. The method further comprises of steps of determining an appropriate overall mass, determining an appropriate outer surface, determining an appropriate shape, and determining an appropriate material that is to be used.

[027] In accordance with the second aspect of the present invention, the method also comprises steps of determining an elastic Potential Energy (PE) of the material that is selected and determining an imposed Kinetic Energy (KE) to ascertain the desired deviation to the sports training ball when thrown straight in air.

[028] In accordance with the second aspect of the present invention, the method of determining the desired deviation is further characterized to extend a desired swing in air by adopting one or more aerodynamic principles and by altering an outer surface of the ball [029] In accordance with the second aspect of the present invention, the method of altering the outer surface of the sports training ball involves steps of having a plurality of apertures on one or both of the hemispheres, having a plurality of dimples on one or both of the hemispheres, having a rough surface on one side and having a smooth surface on an opposite side. 5 PCT/IB2015/056590 WO 2016/034998 [030] In accordance with the second aspect of the present invention, the method for determining the desired deviation of the sports training ball further characterized to determine an angle of the desired deviation by using one or more of the cricket bowling dynamics such as a ball is thrown at higher speeds in air, to attain a deviation after pitching on the ground and a ball is thrown at lower speeds with loop in air, to attain a deviation after pitching on the ground.

[031] In accordance with the second aspect of the present invention, the inserts accommodating a ball are made of one or more of the materials like wood, plastic, polyurethane, rubber, cork, leather and a composite material.

[032] In accordance with the second aspect of the present invention, the method for determining the angle of the desired deviation of the sports training ball further characterized to achieve the deviation based on one or more of the factors such as a material that is used or the surface of the ball or the elastic PE of the ball or the imposed KE and/or mass of the ball.

[033] In accordance with the second aspect of the present invention, the method further characterized to measure the angle of deviation after pitching for every combination of factors and materials used and is calculated in one or more of the ways such as dropping the ball from a pre-determined height above the ground or throwing the ball at a pre-determined speed using ball throwing devices and/or the result attained by the calculated is used to measure a standard angle of deviation.

Brief Description of the Drawings [034] Other objects and advantages of the present invention will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments, 6 PCT/IB2015/056590 WO 2016/034998 in conjunction with the accompanying drawings, wherein like reference numerals have been used to designate like elements, and wherein FIG. 1 is a schematic plain view of the sports training ball with apertures on the outer surface according to the present invention. FIG. 2 is a cross sectional view of sports training ball with apertures and inserts on both the hemispheres according to the present invention. FIG. 3 is an isometric view of apertures on the outer surface extending parallel to each other in a sequential manner according to the present invention. FIG. 4is an isometric view of sports training ball with apertures on the outer surface of one of the hemisphere according to the present invention. FIG. 5 is across sectional view of sports training ball with an insert in one of the hemisphere according to the present invention. FIG.6 is an isometric view of sports training ball with apertures and inserts on one of the hemisphere according the present invention. FIG. 7 is an exemplary elevation of sports training ball with apertures and inserts on one of the hemisphere according to the present invention. FIG. 8 is an exemplary elevation of a bowler bowling of sports training ball of a game such as cricket according to the present invention as shown in FIG. 7. FIG. 9 is an exemplary elevation of bounce and deviation of a sports training ball of cricket game according to the present invention as shown in the FIG. 7. 7 PCT/IB2015/056590 WO 2016/034998 FIGS. 10a-lOe illustrates various embodiments of sports training ball comprising two hemispheres according to the present invention. FIGS. 1 la-1 le illustrates a sports training ball employing inserts with various sizes and/or shapes according to the present invention. FIGS. 12a-12d illustrate the trajectory of the sports training ball employing an insert as shown in the FIGS. 1 la-1 Id respectively according to the present invention. FIGS. 13a-13d illustrates the sports training ball employing an insert at various locations at a specified distance from the axis according to the present invention.

Detailed Description of the Invention [035] The present invention is directed towards a sports training ball especially used in cricket batting practice, designed to be used by anybody on any surface without requiring a professional expertise. Referring to the drawings, wherein like reference numerals designate identical or corresponding parts throughout several views, preferred embodiments of the present invention are described.

[036] The use of “including”, “comprising” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Further, the use of terms “first”, “second”, and “third”, and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

[037] In accordance with an exemplary embodiment of the present invention, a sports training ball which can deviate towards or away from the batsman after pitching on the ground when thrown straight in air is disclosed. The ball consists of two hemispheres of differential weights 8 PCT/IB2015/056590 WO 2016/034998 and there exists a system for determining a desired deviation of the ball with one or more means. The means of determination include but not limited to an appropriate overall mass, an appropriate outer surface, an appropriate shape, an appropriate material that is to be used, an elastic Potential Energy (PE) of the material that is to be selected and an imposed Kinetic Energy (KE) to ascertain the desired deviation to the sports training ball.

[038] In accordance with an exemplary embodiment of the present invention, the sports training ball disclosed is essentially used for practicing cricket.

[039] In accordance with an exemplary embodiment of the present invention, the desired deviation of the sports training ball is attained towards the hemisphere having more weight.

[040] In accordance with an exemplary embodiment of the present invention, the desired deviation of the sports training ball can be pre-decided before the throw.

[041] In accordance with an exemplary embodiment of the present invention, the sports training ball is characterized to produce a desired swing in air by adopting one or more aerodynamic principles and by altering the outer surface of the ball.

[042] In accordance with an exemplary embodiment of the present invention, the outer surface of the sports training ball is altered by using a plurality of apertures on one or both of the hemispheres or a plurality of dimples on one or both of the hemispheres or a rough surface on one side or a smooth surface on an opposite side.

[043] In accordance with an exemplary embodiment of the present invention, deviation in air due to aerodynamics can be created other than deviating from the ground after pitching due to the differential weights of the hemispheres. Furthermore, the direction of the deviation in air and the direction of deviation after pitching can be of inwards or outwards to create deliveries such as an in-swing or an out-swing or an in-swing seam out, an out-swing seam in, a leg spin, an off spin and a cutter. 9 PCT/IB2015/056590 WO 2016/034998 [044] In accordance with an exemplary embodiment of the present invention, the differential weights of the sports training ball is created by having one or more of a plurality of inserts at one or more locations within one or both of the hemispheres of the sports training ball or an increased weight and/or volume of a fill material in at least one of a hemisphere.

[045] In accordance with an exemplary embodiment of the present invention, the differential weight in the sports training ball can also be created by an air bubble and/or one or more apertures by extracting material from inside or outside of the hemisphere or creating a provision during a step of reactive injection moulding, to facilitate volume and/or weight increase or decrease or a reduced size of a hemisphere of the ball surface and/or the inserts, fill material, air bubbles, apertures ascertain the sports training ball to vary asymmetrically to leverage the desired deviation.

[046] In accordance with an exemplary embodiment of the present invention, an angle of the desired deviation is designed to follow cricket bowling dynamics. The ball is thrown at higher speeds in air, to attain a deviation after pitching on the ground and is simultaneously thrown at lower speeds with loop in air, to attain a deviation after pitching on the ground.

[047] In accordance with an exemplary embodiment of the present invention, the angle of the desired deviation is achieved by factors such as a material that is used or the surface of the ball or the elastic PE of the ball or the imposed KE and the mass of the ball.

[048] In accordance with an exemplary embodiment of the present invention, the materials used for making the sports training ball that to attain the desired deviation is by using at least one or combination of a cork or wood or plastic or polyurethane and rubber.

[049] In accordance with an exemplary embodiment of the present invention, the angle of deviation of the sports training ball after pitching is measured for combination of factors and materials used and is calculated in one or more of the ways like dropping the ball from a pre-10 PCT/IB2015/056590 WO 2016/034998 determined height above the ground or throwing the ball at a pre-determined speed using ball throwing devices and the results attained are calculated to attain a standard angle of deviation.

[050] In accordance with an exemplary embodiment of the present invention, a method for determining a desired deviation for manufacturing of a sports training ball having two hemispheres of differential weights is disclosed. The method further comprises of steps of determining an appropriate overall mass, determining an appropriate outer surface, determining an appropriate shape, and determining an appropriate material that is to be used.

[051] In accordance with an exemplary embodiment of the present invention, the method also comprises steps of determining an elastic Potential Energy (PE) of the material that is selected and determining an imposed Kinetic Energy (KE) to ascertain the desired deviation to the sports training ball when thrown straight in air.

[052] In accordance with an exemplary embodiment of the present invention, the method of determining the desired deviation is further characterized to extend a desired swing in air by adopting one or more aerodynamic principles and by altering an outer surface of the ball.

[053] In accordance with an exemplary embodiment of the present invention, the method of altering the outer surface of the sports training ball involves steps of having a plurality of apertures on one or both of the hemispheres, having a plurality of dimples on one or both of the hemispheres, having a rough surface on one side and having a smooth surface on an opposite side.

[054] In accordance with an exemplary embodiment of the present invention, the method for determining the desired deviation of the sports training ball further characterized to determine an angle of the desired deviation by using one or more of the cricket bowling dynamics such as a ball is thrown at higher speeds in air, to attain a deviation after pitching on the ground and a ball is thrown at lower speeds with loop in air, to attain a deviation after pitching on the ground. 11 PCT/IB2015/056590 WO 2016/034998 [055] In accordance with an exemplary embodiment of the present invention, the inserts accommodating a ball are made of one or more of the materials like wood, plastic, polyurethane, rubber, cork and a composite material.

[056] In accordance with an exemplary embodiment of the present invention, the method for determining the angle of the desired deviation of the sports training ball further characterized to achieve the deviation based on one or more of the factors such as a material that is used or the surface of the ball or the elastic PE of the ball or the imposed KE and/or mass of the ball.

[057] In accordance with an exemplary embodiment of the present invention, the method further characterized to measure the angle of deviation after pitching for every combination of factors and materials used and is calculated in one or more of the ways such as dropping the ball from a pre-determined height above the ground or throwing the ball at a pre-determined speed using ball throwing devices and/or the result attained by the calculated is used to measure a standard angle of deviation.

[058] Referring now to drawings, various embodiments are described below in detail depending on the manufacturing of the sports training ball especially used for cricket to attain the desired deviation towards or away from the batsman after pitching on the ground. Herein after in the below description related to drawings the sports training ball is simply referred as ball for the ease of understanding the present invention.

[059] FIG. 1 is a plain view of a ball 100 having spherical outer surface formed from two hemispheres i.e. first hemisphere 104 and second hemisphere 106. According to the present invention, the ball 100 is especially be used for cricket game. On the spherical outer surface of the sports ball 100, seam is provided at the center. One or more apertures 102 are made part in the construction on the surface of the ball 100 of same or different shapes such as circular or oval as shown in FIG. 1. The apertures 102 can be placed on first hemisphere 104 and second hemisphere 106 in a sequence at a defined distance from the center of the axis of the ball 100. These apertures 102 can also be arranged randomly according to the requirement. The ball 100 12 PCT/IB2015/056590 WO 2016/034998 can be made by using materials to attain the angle of deviation by using atleast one or combination of cork or wood or plastic or polyurethane and/or rubber. The direction of the deviation in air and the direction of deviation after pitching can be inwards or outwards to create deliveries such as an in-swing or an out-swing or an in-swing seam out and/or an out-swing seam in.

[060] FIG. 2 is a cross sectional view of the ball 200 according to the present invention. The ball 200 is provided with plurality of apertures 202 placed on first hemisphere 204 and second hemispheres 206 in a sequential manner with a rough surface on one side and a smooth surface on another side. These apertures by extracting material from inside or outside of the hemisphere or creating a provision during a step of reactive injection moulding, to facilitate volume and/or weight increase or decrease. The construction comprises plurality of inserts 208 are provided on the first hemisphere 204 and the second hemisphere 206. The size and shape of the inserts 208 varies according to the desired deviation of the ball 200 when thrown.

[061] FIG. 3 is an isometric view of a ball 300 according to the present invention. The figure illustrates plurality of apertures 302 on the outer spherical surface of the ball 300 on the first hemisphere 304 and second hemisphere 306 extending parallel to each other in a sequential manner. These apertures 302 can also be placed randomly according to the requirement. The sports ball 300 is made from one or more materials of cork or wood or plastic or polyurethane and/or rubber and used especially for cricket. The angle of the desired deviation is achieved by following factors such as a material that is used, surface of the ball, the elastic PE of the ball, the imposed KE and mass of the ball.

[062] FIG. 4 is an isometric view of a ball 400 according to the present invention. The ball 400 comprises plurality of apertures on the outer surface of a first hemisphere 404. These apertures 402 are arranged in a sequential manner on the outer surface of the one of the first hemisphere 404. The surface of the first hemisphere 404 can be smooth or a rough surface for creating turbulence in air to attain curved path when bowled. The second hemisphere 406 is a solid section of smooth or a rough surface. The weight of the two hemispheres 404 and 406 differs due 13 PCMB2015/056590 WO 2016/034998 to apertures 402 on first hemisphere 404 to attain differential density for controlled swing and deviation in air when bowled.

[063] FIG. 5 is a cross sectional view of a ball 500 according to the present invention. The ball 500 provided with plurality of apertures 502 on one of the hemisphere i.e. first hemisphere 504 to create weight imbalance between the first hemisphere 504 and the second hemisphere 506. The ball 500 accommodating an insert 508 which can be any size and shape according to the desired deviation of the ball 500 when thrown. The weight of insert 508 provided in first hemispheres 504 can be less or more than the actual weight of the first hemisphere 504.

[064] The ball 500 can employ single or combinations of these inserts 508 on the first hemisphere 504 to create weight imbalance in both the hemispheres. The weight imbalance can also be created by an increased weight and/or volume of a fill material, an air bubble and/or one or more apertures by extracting material from inside or outside of the hemisphere or creating a provision during a step of reactive injection moulding and reduced size of a hemisphere of the ball 500.

[065] FIG. 6 is an isometric view of a ball 600 according to the present invention. The ball 600 comprises plurality of apertures 602 on the outer surface of the first hemisphere 604. The second hemisphere 606 is a solid section as shown. The ball accommodates an insert 608 on its first hemisphere 604 and the size and shape of the insert 608 may vary according to desired deviation of the ball 600.

[066] FIG. 7 is an example embodiment of the sports training ball 700 made with two hemispheres i.e. first hemisphere 704 and a second hemisphere 706. First hemisphere 704 is a solid structure and the second hemisphere 706 is provided with plurality of apertures 702 and one or more inserts (not shown) in a specified pattern. At the center of the ball 700 there is provided seam 710 for obtaining optimum bounce when thrown in air. This ball can be mainly used for game where a bounce and appropriate deviation in air is necessary especially for cricket. 14 PCT/IB2015/056590 WO 2016/034998 [067] To attain required deviation in air, the user or bowler need to place his/her fingers at specified places as shown in FIG. 8 of a game such as cricket. The bowler holds the ball with his hand 812 by placing fingers at specified places as thumb on second hemisphere 806 and fore finger and the middle finger on the seam 810. Where, the second hemisphere 806 is provided with plurality of apertures 802 and can accommodate one or more inserts of same and/or different size and shapes as shown in the FIG. 7. The first hemisphere 804 of the ball 800 is a solid section without any apertures. The desired deviation of the ball is attained towards the hemisphere having more weight and pre-decided by the bowler before the throw. The desired swing is attained by adopting one or more aerodynamic principles and by altering the outer surface of the ball.

[068] FIG. 9 is an exemplary elevation 900 of playing cricket by using the ball according to the present invention. When a bowler throws a ball 912 in air by placing fingers at specified locations as shown in FIG. 8, the ball first hits the ground and deviate in various directions 918, 920 to obtain required bounce and swing of the ball 912. The deviation is attained towards the hemisphere having more weight that is decided at the time of throw of the ball 912 by bowler. The desired swing can be attained by altering the outer surface by providing plurality of apertures or plurality of dimples or with a rough surface on one side or with a smooth surface on another side.

[069] The ball 912 deviates in air due to aerodynamics created and deviating from the ground after pitching due to the differential weights of the hemispheres. After pitching of the ball 912 can create an in-swing or an out-swing or an in-swing seam out or and an out-swing seam in. A batsman 914 hits the ball 912 accordingly situated between plurality of wickets 922 and 924 placed on opposite sides. The ball 912 is thrown at higher speeds in air to attain a deviation after pitching on the ground and at lower speeds with loop in air to attain more deviation after pitching on the ground.

[070] Referring to FIGS. 10a-lOe illustrates various embodiments of the ball comprising two hemispheres according to the present invention. FIG. 10a shows a ball 1000a provided with a 15 PCT/IB2015/056590 WO 2016/034998 seam 1010a at the center of the ball 1000a. It comprises two hemispheres first hemisphere 1004a and second hemisphere 1006a of smooth surface is joined with the seam 1010a. The first hemisphere 1004a and the second hemisphere 1006a are further divided into two parts either vertically or horizontally. Similarly, FIG. 10b shows a ball 1000 with seam 1010b at the center of the ball joining the first hemisphere 1004b and 1004b. The first hemisphere is provided with apertures 1002b. The shape of the seam 1010b of the ball 1000b as shown in the FIG. 10a is different from the shape of the seam 1010a provided on the ball 1000a as shown in the FIG. 10b.

[071] Similarly, FIG. 10c shows a ball 1000c with seam 1010c at the center of the ball 1000c joining the two hemispheres i.e. first hemisphere 1004c and second hemisphere 1006c. The surface of the first hemisphere 1004c and the second hemisphere 1006c is smooth. Now referring to FIG. lOd, shows a ball lOOOd comprising a seam lOlOd of different shape as per the balls shown in the FIGS. 10a and 10b. The ball lOOOd made of two hemispheres i.e. first hemisphere 1004d and second hemisphere 1006d with apertures 1002d provided on the surfaces of both the hemispheres. These apertures can be of same and/or different shape and/or size based on the requirement of the bounce, swing and deviation of the ball when thrown in air. The seam lOlOd attaches the first hemisphere 1004d and the second hemisphere 1006d. The apertures can also be provided on only one of the hemisphere as shown in the FIG. lOe. Where the apertures 1002e are provided on the second hemisphere 1006e of the ball lOOOe and another hemisphere i.e. first hemisphere 1004e with smooth surface attached with the second hemisphere 1006e using a seam lOlOe.

[072] The ball as shown in FIGS. 10a-lOe can be made using any one or more of the materials like cork or wood or plastic or polyurethane and/or rubber. These balls are manufactured in such a way attain cutters, swing and spin deliveries when thrown in air. This can be achieved by providing weight imbalances at one or more locations in one or both of the hemispheres of the ball as shown in the FIGS. 11 a-lie., creating weight imbalance by altering the weight and/or volume of the filling material or by creating air bubble or one or more apertures by extracting material from inside or outside of the hemisphere and reducing the size of a hemisphere of the ball surface. 16 PCT/IB2015/056590 WO 2016/034998 [073] Referring now to FIGS, lla-lle illustrating a ball employing inserts of various sizes and/or shapes. The ball is accommodated with a plurality of inserts at one or more locations on one or both of the hemispheres of the ball. The trajectory of these balls accommodated with inserts as illustrated in the FIGS. 1 la-1 Id are shown in the FIGS. 12a-12d respectively. Where, the inserts inserted in the ball can be of different size and/or shape. FIG. 11a shows a ball 1100a employing an insert 1108a of triangle shape located at the left half of the ball 1100a as shown. The trajectory of this ball 1100a is illustrated in the FIG. 12a at 1200a depicting the bounce of the ball 1212a thrown in air hits the ground and bounce to left side of the batsman. The deviation and swing of the ball is shown in the FIG. 12a.

[074] As shown in the FIG. 1 lb, the ball 1100b accommodates an insert 1108b which is square shaped located at left half of the ball 1100b as shown. The trajectory of this ball 1100b is depicted at 1200b as shown in the FIG. 12b. Once the ball 1100b is thrown in air it hits the ground and bounce to the right side of the batsman. The deviation and swing is shown in FIG. 12b. Similarly, the ball 1100c employing an insert 1108c of semicircular in shape located on the left half of the ball 1100c as shown in the FIG. 11c. The deviation and swing of this ball 1100c is as shown in the FIG. 12c at 1200c depicting the deviation of the ball at 1210c.

[075] As shown in the FIG. 1 Id, a ball 1 lOOd accommodated with an insert 1108d which is semicircular in shape located in left half of the ball 1 lOOd whose trajectory when thrown in air is shown in FIG. 12d at 1200d. The bounce of the ball is to the left side of the batsman at 1210d as shown. The ball llOOe as shown in the FIG. lie accommodates a semicircular insert 1108e of small size when compared to the insert as shown in FIG. 11c and FIG. lid located at the right half of the ball. These inserts 1108a, 1108b, 1108c, 1108d and 1108e can be of any other shape and can be of smaller and/or larger in size. There can also be one or more inserts in a ball.

[076] These balls 1100a, 1100b, 100c, llOOd and llOOe depicted in the FIG. lla-lle can be selected from any of the sports training balls illustrated in the FIGS. lOa-lOe. The trajectories as mentioned above can be obtained if the bowler places his fingers at particular location of the ball 17 PCT/IB2015/056590 WO 2016/034998 while throwing in air. These trajectories of the ball may vary depending on the placement of fingers on the ball by the bowler, location of insert accommodated in the ball, distance from the center of the axis of the ball to the insert discussed in FIGS. 13a-13d, creating weight imbalance in atleast one hemisphere of the ball, creating air bubbles or one or more apertures on the ball or by reducing the size of a hemisphere of the ball.

[077] FIGS 13a-13d illustrates balls 1300a, 1300b, 1300c and 1300d with inserts provided at a specified distance from the center of the axis of the ball. The balls 1300a, 1300b, 1300c and 1300d accommodated with inserts 1308a, 1308b, 1308c and 1308d of rectangular shape placed at different location from the center of the axis to attain desired deviation, swing and bounce when thrown in air. The desired cutters, swing deliveries, spin deliveries etc. of the ball can obtained by considering a plurality of inserts at one or more locations within one or both of the hemispheres, an increased weight and/or volume of a fill material, an air bubble and/or one or more apertures by extracting material from inside or outside of the hemisphere or creating a provision during a step of reactive injection moulding, to facilitate volume and/or weight increase or decrease, a reduced size of a hemisphere of the ball surface and the inserts, fill material, air bubbles, apertures ascertain the sports training ball to vary asymmetrically to leverage the desired deviation.

[078] It is an advantage of the present invention to achieve desired deviation in a sports training ball when bowled straight even by a non-skilled bowler. The method of achieving the desired deviation is disclosed in the claims appended and can be employed in combinations by selecting one or more means in one or more numbers without deviating the scope of the invention.

[079] In this respect, it is to be understood that the embodiments in this application are not limited to the details of the methods and systems of the manufacturing of the ball set forth in the description or illustrated in the drawings. The embodiments are capable of being practiced and carried out in various ways. As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other 18 PCT/IB2015/056590 WO 2016/034998 structures, methods and systems for carrying out the several purposes of the embodiments described in this application.

[080] Additional benefits and advantages of the present embodiments will become apparent in those skilled in the art to which the embodiments relate from the description of the preferred embodiment and the appended claims, taken in conjunction with the accompanying drawings. It is important, therefore, that the claims be regarded as including such systems and methods insofar as they do not depart from the spirit and scope of the embodiments described herein. 19

Claims

Claims I/We claim

1. A sports training ball, when thrown straight in air deviates towards or away from the batsman after pitching on the ground, consists of: two hemispheres of differential weights, and a system for determining a desired deviation with one or more means for determining: an appropriate overall mass; an appropriate outer surface; an appropriate shape; an appropriate material that is to be used; an elastic Potential Energy (PE) of the material that is selected; and an imposed Kinetic Energy (KE) to ascertain the desired deviation to the sports training ball.
2. The sports training ball of claim 1, is essentially be used for practicing cricket.
3. The sports training ball of claim 1, wherein the desired deviation after pitching on the ground is attained towards the hemisphere having more weight.
4. The sports training ball of claim 1, wherein the desired deviation can be pre-decided before the throw.
5. The sports training ball of claim 1, characterized to produce a desired swing in air by adopting one or more aerodynamic principles and by altering the outer surface of the ball.
6. The sports training ball of claim 1, wherein the outer surface is altered by using one or more of the following means of having: a plurality of apertures on one or both of the hemispheres; a plurality of dimples on one or both of the hemispheres; a rough surface on one side; and a smooth surface on an opposite side.
7. The sports training ball of claim 1, deviates in the desired direction in one or more of the following forms of: deviating in air due to aerodynamics created; and deviating from the ground after pitching due to the differential weights of the hemispheres.
8. The sports training ball of claim 1, wherein direction of the deviation in air and the direction of deviation after pitching can be inwards or outwards to create deliveries such as: an in-swing; an out-swing; an in-swing seam out; an out-swing seam in; a leg spin; an off spin; and a cutter.
9. The sports training ball of claim 1, wherein the differential weight is created by having one or more of: a plurality of inserts at one or more locations within one or both of the hemispheres of the sports training ball; an increased weight and/or volume of a fill material to create a weight imbalance in at least one of a hemisphere of the sports training ball; an air bubble and/or one or more apertures by extracting material from inside or outside of the hemisphere or creating a provision during a step of reactive injection moulding, to facilitate volume and/or weight increase or decrease; a reduced size of a hemisphere of the ball surface; and the inserts, fill material, air bubbles, apertures ascertain the sports training ball to vary asymmetrically to leverage the desired deviation.
10. The sports training ball of claim 1, wherein an angle of the desired deviation is designed to follow cricket bowling dynamics like: a ball is thrown at higher speeds in air, to attain a deviation after pitching on the ground;and a ball is thrown at lower speeds with loop in air, to attain a deviation after pitching on the ground which is more.
11. The sports training ball of claim 1, wherein the angle of the desired deviation is achieved by following factors like: a material that is used; surface of the ball; the elastic PE of the ball; the imposed KE; and mass of the ball.
12. The sports training ball of claim 1, wherein the materials used to attain the angle of the desired deviation is by using at least one or combination of: cork; wood; plastic; polyurethane; rubber; and leather.
13. The sports training ball of claim 1, wherein the angle of deviation after pitching is measured for every combination of factors and materials used and is calculated in one or more of the ways of: dropping the ball from a pre-determined height above the ground; throwing the ball at a pre-determined speed using ball throwing devices; and the result attained by the calculated is used to measure a standard angle of deviation.
14. A method for determining a desired deviation for manufacturing of a sports training ball having two hemispheres of differential weights, comprises the steps of: determining an appropriate overall mass; determining an appropriate outer surface; determining an appropriate shape; determining an appropriate material that is to be used; determining an elastic Potential Energy (PE) of the material that is selected; and determining an imposed Kinetic Energy (KE) to ascertain the desired deviation to the sports training ball when thrown straight in air.
15. The method used for determining the desired deviation of the sports training ball according to claim 14, further characterized to extend a desired swing in air by adopting one or more aerodynamic principles and by altering an outer surface of the ball.
16. The outer surface of the sports training ball of claim 15, is altered by a method involving a step of: having a plurality of apertures on one or both of the hemispheres; having a plurality of dimples on one or both of the hemispheres; having a rough surface on one side; and having a smooth surface on an opposite side.
17. The method used for determining the desired deviation of the sports training ball according to claim 14, further characterized to determine an angle of the desired deviation by following one or more of the cricket bowling dynamics like: a ball is thrown at higher speeds in air, to attain a deviation after pitching on the ground;and a ball is thrown at lower speeds with loop in air, to attain a deviation after pitching on the ground which is more.
18. The method used for determining the angle of the desired deviation of the sports training ball according to claim 14, further characterized to achieve the deviation based on one or more of the factors like: a material that is used; surface of the ball; the elastic PE of the ball; the imposed KE; and mass of the ball.
19. The method used for determining the desired deviation of the sports training ball according to claim 14, further characterized to measure the angle of deviation after pitching for every combination of factors and materials used and is calculated in one or more of the ways like: dropping the ball from a pre-determined height above the ground; throwing the ball at a pre-determined speed using ball throwing devices; and the result attained by the calculated is used to measure a standard angle of deviation.