Shaft for lacrosse stick

Inactive Publication Date: 2011-09-29
CHANG JUNG SHIH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]It is therefore a primary object of the present invention to provide a shaft for a lacrosse stick that is lightweight, stronger and more durable than existing shaft.
[0009]It is another object of the present invention to provide a lacrosse shaft that has increased impact strength as compared to prior lacrosse handles.

Problems solved by technology

The first is that they were susceptible to damage from excess exposure to water.
The second is that these prior wooden shafts were heavy and somewhat cumbersome.
Further, the wooden shafts were also susceptible to breakage.
However, these metal shafts still have some drawbacks.
For example, the rigid metal construction can transmit shock to a player's hands when the lacrosse stick is subjected to a sudden impact, e.g. slashing by an opponent.
Further, if the external force is great enough, the shaft can even break.
However, when putting to use, the expecting advantages can not be found because it is difficult to prepare a suitable thickness for the coating coupled to the outer surface of the shaft.

Method used

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  • Shaft for lacrosse stick
  • Shaft for lacrosse stick
  • Shaft for lacrosse stick

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Experimental program
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Effect test

second embodiment

[0035]Referring secondly to FIGS. 5 and 6, there is shown an improved lacrosse shaft 20 according to the claimed invention. Lacrosse shaft 20 includes a body 202 and an outer layer 204.

[0036]Body 202 is, in this embodiment, an elongated circular tube and made of composite materials. The length of body 202 is about 756 mm and the wall thickness of body 202 is about 1.50 mm so that the weight of body 202 can be about 110 g.

[0037]Outer layer 204, in this embodiment, is made of PU foam material and tightly wrapped around the exterior surface of a predetermined portion 201 of body 202. The length of outer layer 204 is about 711 mm. The cross section of outer layer 204 is octagon-shaped. It has a pair of first side walls 206, a pair of second side walls 208, and four arched third side walls 210.

[0038]The thickness of outer layer 204 is distributed in a non-uniformly way. The thickness of second side walls 208 is larger than that of first side walls 206. In this embodiment, the thickness o...

third embodiment

[0039]Referring now to FIGS. 7 and 8, there is shown an improved lacrosse shaft 30 according to the claimed invention. Lacrosse shaft 30 includes a body 302 and an outer layer 304.

[0040]Body 302 is, in this embodiment, made of composite materials and an elongated oval tube with a length about 756 mm, a wall thickness about 3.00 mm and a weight about 115 g.

[0041]Outer layer 304, in this embodiment, is also made of PU foam material and tightly wrapped around the exterior surface of a predetermined portion 306 of body 302. In other words, the length of outer layer 304 is about 558 mm. The cross section of outer layer 304 is also octagon-shaped and has a uniform side wall thickness about 1.55 mmm. The weight of outer layer 304 is about 85 g.

fourth embodiment

[0042]Lastly, please referring to FIGS. 9 to 12, there is shown an improved lacrosse shaft 40 according to the claimed invention. Lacrosse shaft 40 includes a body 402 and an outer layer 404. Body 402, like body 102 of shaft 10, has a front section 406 and a rear section 408.

[0043]Front section 406 is made of composite materials and is an octagon tube with a length about 406 mm and a uniform side wall thickness about 2.00 mm.

[0044]Rear section 408 is also made of composite materials. It is an elongated circular tube with a length about 406 mm, an external diameter about 19.5 mm and an internal diameter 17.0 mm. In combination, the rear end of rear section is inserted into the front end of front section 406. Between them is disposed a lining 410 so that front section 406 and rear section 408 can be securely joined together to form body 402 with a length about 762 mm a weight about 115 g.

[0045]Outer layer 404, in this embodiment, is also made of PU foam material. It is tightly wrapped...

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Abstract

A shaft for a lacrosse stick comprises an elongated tubular body and an outer layer. The body is made of rigid materials. The body can be constructed by one piece or a plurality of sections and have a top end for attachment to a lacrosse head and a butt end to be slipped onto by an end cap. The outer layer is made of elastic materials, such as plastic PU (polyurethane), foam materials which are wrapped around a predetermined portion of the body. The wall thickness of the body is designed in a range of 1.00 mm to 3.00 mm. The thickness of the outer layer is designed in Abstract a range of 0.50 mm to 3.00 mm.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to lacrosse sticks, and, more particularly, to a shaft for a lacrosse stick.[0003]2. Description of the Related Art[0004]Traditional lacrosse shafts were constructed of wood. These wooden shafts suffered from a variety of disadvantages. The first is that they were susceptible to damage from excess exposure to water. The second is that these prior wooden shafts were heavy and somewhat cumbersome. Further, the wooden shafts were also susceptible to breakage.[0005]To solve the disadvantages of the traditional wooden lacrosse shafts, shafts of metallic construction were developed to replace the wooden lacrosse shafts, particularly in the men's game. The advantage of such construction was that the metal shafts could be mass produced with uniform quality, strength and weight, and were generally stronger than wood shafts.[0006]However, these metal shafts still have some drawbacks. For example, the rigid ...

Claims

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Application Information

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IPC IPC(8): A63B59/02
CPCA63B59/0077A63B2209/02A63B2209/00A63B59/02A63B60/48A63B59/20A63B60/54A63B60/00
InventorCHANG, JUNG-SHIH
OwnerCHANG JUNG SHIH