U.S. patent application number 10/795869 was filed with the patent office on 2005-09-15 for wet-proof ball structure.
Invention is credited to Yang, Wen Hsiang.
Application Number | 20050202911 10/795869 |
Document ID | / |
Family ID | 34919799 |
Filed Date | 2005-09-15 |
United States Patent
Application |
20050202911 |
Kind Code |
A1 |
Yang, Wen Hsiang |
September 15, 2005 |
Wet-proof ball structure
Abstract
A water-proof ball structure comprises a ball core; at least two
water-proof elastic bags enclosing the ball core; each water-proof
elastic bag having at least one opening, the openings of the at
least two water-proof elastic bags being not overlapped; and a
cover enclosing the at least two water-proof elastic bags. Each
water-proof elastic bag is made of two sheet, each sheet has a
shape like "8". If the water-proof elastic bag does not enclose the
ball core, the volume of each water-proof elastic bag is smaller
than that of the ball core.
Inventors: |
Yang, Wen Hsiang;
(Kaohsiung, TW) |
Correspondence
Address: |
WEN HSIANG YANG
235 Chung-Ho
Box 8-24
Taipei
TW
|
Family ID: |
34919799 |
Appl. No.: |
10/795869 |
Filed: |
March 9, 2004 |
Current U.S.
Class: |
473/602 |
Current CPC
Class: |
A63B 2037/087 20130101;
A63B 37/12 20130101; A63B 2209/023 20130101; A63B 2225/60 20130101;
A63B 45/00 20130101; A63B 2243/0037 20130101; A63B 37/06
20130101 |
Class at
Publication: |
473/602 |
International
Class: |
A63B 037/02; A63B
037/08 |
Claims
1-3. (canceled)
4. A water-proof ball structure comprising: a ball core; at least
two water-proof elastic bags enclosing the ball core; each
water-proof elastic bag having at least one opening, the openings
of the at least two water-proof elastic bags being not overlapped;
and a cover enclosing the at least two water-proof elastic bags; a
yarn layer enclosing the two water-proof elastic bag; and a cover
enclosing the yarn layer; the cover being made of two sheets; each
sheet having a shape like "8".
5. The water-proof ball structure as claimed in claim 4, wherein if
the water-proof elastic bag does not enclose the ball core, the
volume of each water-proof elastic bag is smaller than that of the
ball core.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a water-proof ball
structure, wherein the manufacturing efficiency is increased and
cost is reduced. Moreover, once after the ball core is
manufactured, the wet-proof elastic bags can enclose the ball core
immediately. Thereby, in other manufacturing process, the ball core
will not be wetted.
BACKGROUND OF THE INVENTION
[0002] With reference to FIG. 1, the game-used ball core 10 of a
basket ball is made by winding a plurality of woolen yarns or other
yarn which can absorb water. A water-proof elastic layer 20
encloses the ball core 10 so as to prevent the ball core 10 from
wetting. Then a cover 30 encloses the water-proof elastic layer 20
so as to form a complete basketball. To fix the cover 30 to the
water-proof elastic layer 20, a yarn layer 40 is installed between
the water-proof elastic layer 20 and the cover 30.
[0003] With reference to FIG. 2, currently, the water-proof elastic
layer 20 is mainly made of rubber. Then a mold 50 is used to heat
and vulcanize the water-proof elastic layer 20. Thereby, the cost
for making and maintaining the mold is necessary. Moreover, the
process of heating and vulcanization needs more time. Currently,
the time for forming a ball core 10 is shorten than that for
forming the water-proof elastic layer 20. Thereby, a waiting time
is necessary for enclosing the water-proof elastic layer 20 to the
ball core 10. However, in this period, the ball core 10 will wet so
as to deteriorate the quality of the basket ball so as to affect
the use of the basket ball. For example, the basketball easily
deformes.
SUMMARY OF THE INVENTION
[0004] Accordingly, the primary object of the present invention is
to provide a water-proof ball structure, wherein the manufacturing
efficiency is increased and cost is reduced. Moreover, once after
the ball core is manufactured, the water-proof elastic bags can
enclose the ball core immediately. Thereby, in other manufacturing
process, the ball core will not be wetted.
[0005] To achieve above objects, the present invention provides a
water-proof ball structure which comprises a ball core; at least
two water-proof elastic bags enclosing the ball core; each
water-proof elastic bag having at least one opening, the openings
of the at least two water-proof elastic bags being not overlapped;
and a cover enclosing the at least two water-proof elastic bags.
Each water-proof elastic bag is made of two sheets, and each sheet
has a shape like "8". If the water-proof elastic bag does not
enclose the ball core, the volume of each water-proof elastic bag
is smaller than that of the ball core.
[0006] The various objects and advantages of the present invention
will be more readily understood from the following detailed
description when read in conjunction with the appended drawing.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is a cross section view of the prior art basket
ball.
[0008] FIG. 2 is a schematic view showing the process of forming a
water-proof elastic layer out of a ball core by vulcanization in
the prior art.
[0009] FIG. 3 is an exploded perspective view of the present
invention.
[0010] FIG. 4 is a structural cross section view of the present
invention.
DETAILED DESCRIPTION OF THE INVENTION
[0011] In order that those skilled in the art can further
understand the present invention, a description will be described
in the following in details. However, these descriptions and the
appended drawings are only used to cause those skilled in the art
to understand the objects, features, and characteristics of the
present invention, but not to be used to confine the scope and
spirit of the present invention defined in the appended claims.
[0012] With reference to FIGS. 3 and 5, the structure of the
present invention will be described herein.
[0013] Referring to FIGS. 3, the present invention includes a ball
core 60, at least two water-proof elastic bags 70 enclosing the
ball core 60, and a cover 80 enclosing the at least two water-proof
elastic bags 70.
[0014] The ball core 60 is like the prior art one, with reference
to FIGS. 3 and 4. It is formed by winding a plurality of yarns,
such as woolen wires. However, this is not the main concern of the
present invention, and thus the details will not be further
described here.
[0015] The water-proof elastic bag 70, as shown in FIGS. 3 and 4,
is a bag body made of elastic rubber material, for example, latex,
silica gel. The water-proof elastic bag 70 has at least one opening
71. If the water-proof elastic bag 70 does not enclose the ball
core 60, the volume of each water-proof elastic bag 70 is smaller
than that of the ball core 60.
[0016] The cover 80, as shown in FIGS. 3 and 4, is formed by
seaming two sheets. Each sheet has a shape like "8". The cover 80
enclosed the two water-proof elastic bags 70. Since the cover 80 is
used in the prior art, the detail will not be further described
herein.
[0017] By above elements, when the ball core 60 is shaped, the two
water-proof elastic bags 70 tightly enclose the ball core 60 so as
to form as an elastic water-proof elastic layer. In assembly, the
openings 71 of the at least two water-proof elastic bags 70 are not
overlapped. Thereby, the ball core 60 is water-proofed. Then, a
yarn layer 90 further encloses the two water-proof elastic bags 70.
A layer of glue is coated upon the yarn layer 90.
[0018] It is known from above drawings, since in the present
invention, at least two water-proof elastic bags 70 are used to
enclose the ball core 60 and the openings 71 of the at least two
water-proof elastic bags 70 are not overlapped. The ball core 60 is
water-proofed. Moreover, the operation of assembling the
water-proof elastic bags 70 to the ball core 60 is more rapidly
than the prior art by heating in mold. Thus, the manufacturing
efficiency is increased and cost is reduced. Moreover, once after
the ball core 60 is manufactured, the water-proof elastic bags 70
can enclose the ball core 60 immediately. Thereby, in other
manufacturing process, the ball core 60 will not be wetted.
[0019] The present invention is thus described, it will be obvious
that the same may be varied in many ways. Such variations are not
to be regarded as a departure from the spirit and scope of the
present invention, and all such modifications as would be obvious
to one skilled in the art are intended to be included within the
scope of the following claims.
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