Ball structure and method for making the same
AssigneeSan Fang Chemical Industry Co., Ltd.
InventorsCHUNG-CHIH FENG, CHUN-WEI WU, YONG-SONG LIN
Life of this patent
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Abstract
The present invention relates to a ball structure and a method for making the same. The ball structure includes an inner bladder and a plurality of covers. The covers surround the inner bladder. Each of the covers includes a base fabric and a resin layer. The resin layer has a recess portion at the periphery of the cover, so that the recess portions of adjacent covers defines a groove. The base fabric includes a first portion and a second portion. The first portion corresponds to the recess portion, and the second portion is away from the recess portion. The thickness of the first portion is substantially equal to the thickness of the second portion.
Claims10
A ball structure, comprising:
- an inner bladder;
- and
- a plurality of covers surrounding the inner bladder, wherein each of the covers comprises a base fabric layer and a resin layer, the resin layer has a recess portion at a peripheral edge of the cover, and the recess portions of adjacent covers define a groove, wherein the base fabric layer has a first portion and a second portion, the first portion corresponds to the recess portion, the second portion is far away from the recess portion, and a thickness of the first portion is substantially equal to a thickness of the second portion.
A method for making a ball structure, comprising:
- (a) providing an inner bladder, a winding layer and a middle bladder, wherein the winding layer covers the inner bladder, the middle bladder covers the winding layer and includes a plurality of protrusion portions to define a plurality of accommodating areas;
- (b) providing a plurality of covers, wherein each of the covers comprises a base fabric layer and a resin layer, and the resin layer has a recess portion at a peripheral edge of the cover;
- and
- (c) attaching the base fabric layers of the covers to the middle bladder and in the accommodating areas so that the recess portions of adjacent covers and the protrusion portion therebetween define a groove.
A method for making a ball structure, comprising:
- (a) providing a plurality of covers, wherein each of the covers includes a base fabric layer and a resin layer, the resin layer has a recess portion at a peripheral edge of the cover, and the resin layer has a first surface that is far away from the base fabric layer;
- (b) attaching the first surfaces of the resin layers of adjacent covers to each other at the peripheral edges of the covers to form an outer skin structure;
- (c) reversing the outer skin structure from the inside to the outside, so that the first surface of the resin layer faces outward, wherein the outer skin structure substantially forms a ball shape structure, and includes a notch;
- (d) placing an inner bladder in the outer skin structure through the notch;
- and
- (e) attaching at least one cover to the inner bladder that is exposed by the notch.
Dependencies are inferred from the claim text.