Complete Specification
1. Field of the Invention
The invention relates to kit of Cricket Game. In this specification, the term "kit "is used in a general sense to include Bat, Stumps, bails for this sport. It is also related to those things which are made of wood.
2. Description of the Prior Art
The cricket is a most popular game in the world. In this game there is a major role of
Bat, Stumps and the bails. All of these are made of wood.
The Bat is made of willow wood; the wood used is traditionally English willow.
The blade has a maximum width of 108 mm and the whole bat has a maximum length of
965 mm.
A Stump is a cylindrical solid wooden post, 25 mm in diameter & 711 mm high. It has a Spike extending from the bottom end so it can be hammered into ground leaving the 711 mm height above the ground. Stumps have a horizontal groove across the top end.
A bail is a turned piece of wood, no more than 109 mm long, it has bulging middle section no more than 54 mm long. Projecting from the barrel are two spigots-one Should be twice the length of the other. Standard bails are quite light. Heavier bails are used in a windy Condition.
The whole world is working for reducing the global warming effect and for this NASA is Encouraging to the world for saving trees & for more plantation. So the main object of the Present invention is focusing on saving of trees and to help for the reduction of global Warming for the Human life.
3. Summary of the Invention
The present invention provides a unique solution for cricket which is not only ecofriendly but also economical for the cricket game. This Invention provides an Aluminum alloy kit for the cricket game. The aluminum is a light metal as well as recyclable comparison to wood. This material is suitable for hockey also. The material and the shape of the bat are selected so that the natural frequency of a mode of vibration of the hitting surface of the bat while in contact with the ball is matched to the contact time between the bat and ball. This improves the hitting power compared with a traditional bat of the same weight. At the same time, the invention has the advantage of reducing peak contact force between the ball and bat. The approach of the present invention, in which the deflection time is
matched to the contact time, is found to be significantly more effective than the prior art approach of matching the natural frequencies of bat and ball, one way of the putting the invention into effect is to provide a hollow bat structure. As an alternative to the vibration control in the bat is fill up the Polyurethane Foam in the bat. The displacement of the ball is greater than the displacement of the bat, as seen in FIG.1A, The bat and ball are in contact, the difference in displacement being accommodated by compression of the ball and (to a lesser extent) of the bat. when the displacement of the ball become less than the displacement of the bat, the bat and ball are no longer in contact and the force between them drops to zero (FIG.lB).thereafter the ball emerges travelling at a uniform output velocity, as indicated by the straight line 18 in FIG.1A. one measure of the performance of bat is the coefficient of restitution e, which can be assessed by comparing the input and output ball velocities determined from the gradient of curve 12 at the beginning and at the end of the impact. In the impact of FIG1.A the coefficient of restitution as found to be approximately 0.65. the duration of the impact shown in FIGS. 1A and IB was 1050 micron second and the peak contact force between ball and bat was 4500N. It is desirable to minimize the peak contact force because a large force can damage the ball. The sinusoidal profiles give the strength as well as reduce the vibration on handle of bat.
For stump and bail the same material is used in hollow section. 4. Brief Description of the Drawings
FIG.1A is a graph plotting against time vs displacement of a bat and of a ball in a model of the impact between them.
FIG.IB is a graph plotting against time vs force between bat and ball in the model impact ofFIG.lA.
FIG.2A is a section view of blade
FIG.2B is a sectional view with Shock absorbent material like puf(4).
FIG.2C is a lower cap of bat.
FIG.2D is a top cap of bat.
FIG.2E is a Sectional view of Top Cap of Handle.
FIG.2F is a sectional view of Handle of Bat.
FIG.2G is an Isometric view of bat.
FIG.3A is a Sectional View of Stump
FIG.3B is an Isometric view of Stump with Top Cap (10).
FIG.4A is a Sectional view of Bail.
FIG.4B is an Isometric view of bail with End Cap (9)
5. Detailed Description of the Preferred Embodiments
When a ball impacts on a bat, two major mechanisms are in play. The first mechanism is
local compression of the materials of the ball and of the bat around the point of contact.
In the case of cricket, most of the compression occurs in the ball, the surface of which is of
much softer material than the bat. The characteristics of the ball are naturally outside the
scope of the bat designer.
The second impact mechanism is overall flexing of the bat, the shape and material of the
bat can be chosen to impart desired vibration characteristics, which determine the flexure
of the bat during an impact.
In FIG.l A, Curve 12 shows the displacement of the ball over time and curve 14 shows the
Displacement of the bat over time, both measured relative to the point of contact at time
zero. In FIG.IB, Curve 16 Shows the changing force impact face of hollow bat.
FIG.2A is a Sectional view of Blade shows the Sinusoidal profile over the whole length of
blade for preventing bending as well as for reducing the Vibrations on bat. It should be
understood that the modes of vibrations of the hitting surface during an impact may not
be the free modes of vibration of the bat. The time taken for the bat faces to deflect and
return to near its original position depends not only on the stiffness and mass distribution
of the bat face but also on the combined mass of the bat and ball. However, the stiffness
and natural frequency properties of the ball are found to have little effect. The free
vibration characteristics of the ball do not play a significant role.FIG.2B shows the Shock
absorbent material (4) for reducing vibrations as well as for absorbing sound waves.
FIG.2C is a lower cap of bat which is made of Nylon for closing the Lower end of bat for
desired light weight requirement of bat. it may be of Aluminum also.
FIG.2D is a top cap of bat of Nylon or Aluminum for closing the Top end of bat.
FIG.2E is a Sectional View of Top Cap (6) of Handle for closing end.
FIG.2F is a sectional view of Handle of bat which is hollow for light weight desired the top
is closed by Nylon cap(6)
FIG.2G is a Isometric View of bat for showing various attached parts. Handle (5), Cap (6),
Lower cap (7), Blade (8). FIG.3A is a sectional view of stump shows the hollow part the top is closed by a Nylon cap. FIG.3B shows Isometric view of stump with Nylon Cap (10) on top end. FIG.4A shows the sectional view of bail for hollow section. FIG.4B shows the Isometric View of bail with closing end by nylon cap (9).

We Claim:-
1. A kit of cricket for bat, bail and for stump is made of Aluminum alloy.
2. It is also related to those things which are made of wood like furniture's, Hockey.
3. A Blade of hollow section with sinusoidal profiles for increasing the life of bat as well as
for reducing the vibration on handle.
4. A Blade which consist shock absorbent material like Polyurethane Foam for reducing
the sound waves as well as for reducing the vibration on handle end.
5. A Bat which consist Nylon caps or aluminum caps on closing end of hollow section of
blade.
6. Hollow handle with or without puf material with nylon or aluminum cap on closing
end.
7. A hollow handle with Sinusoidal profile on external surface.
8. A Hollow Stump with Nylon Cap or Aluminum cap with Horizontal groove on top end
9. A Hollow Bail with Nylon cap or Aluminum on closing end.