U.S. patent application number 10/331609 was filed with the patent office on 2004-07-01 for composite material bat.
This patent application is currently assigned to SANHOSUN SPORTING GOODS CO., LTD.. Invention is credited to Hsu, Henry.
Application Number | 20040127310 10/331609 |
Document ID | / |
Family ID | 32654782 |
Filed Date | 2004-07-01 |
United States Patent
Application |
20040127310 |
Kind Code |
A1 |
Hsu, Henry |
July 1, 2004 |
Composite material bat
Abstract
A composite material bat comprising: a hitting part with a large
diameter and a holding part with a smaller diameter. It forms a
conical area at the shoulder of where the hitting part and the
holding part connects. Wherein the improvement is characterizing in
that the holding part includes an inner shell and an outer shell,
said inner shell has better rigidity or stiffness then said outer
shell and said outer shell has better flexibility then said inner
shell.
Inventors: |
Hsu, Henry; (Taichung,
TW) |
Correspondence
Address: |
BACON & THOMAS, PLLC
625 SLATERS LANE
FOURTH FLOOR
ALEXANDRIA
VA
22314
|
Assignee: |
SANHOSUN SPORTING GOODS CO.,
LTD.
Taichung
TW
|
Family ID: |
32654782 |
Appl. No.: |
10/331609 |
Filed: |
December 31, 2002 |
Current U.S.
Class: |
473/567 |
Current CPC
Class: |
A63B 53/10 20130101;
A63B 59/50 20151001; A63B 2102/18 20151001; A63B 59/54 20151001;
A63B 59/51 20151001 |
Class at
Publication: |
473/567 |
International
Class: |
A63B 059/06 |
Claims
What the invention claimed is:
1. A composite material bat comprising: a hitting part with a large
diameter and a holding part with a smaller diameter; it forms a
conical area at the shoulder of where the hitting part and the
holding part connects; wherein the improvement is characterizing in
that said holding part includes an inner shell and an outer shell,
said inner shell has better rigidity or stiffness then said outer
shell and said outer shell has better flexibility then said inner
shell.
2. The composite material bat as claimed in claim 1, said outer
shell of said holding part made of reinforced fiber
thermoplastic.
3. The composite material bat as claimed in claim 2, said inner
shell of said holding part made of reinforced fiber thermosetting
material or metal.
4. The composite material bat as claimed in claim 1, further
comprising a middle cushion layer between said inner shell and said
outer shell.
5. The composite material bat as claimed in claim 4, said
reinforced fiber thermosetting material made of the base material
of epoxy.
6. The composite material bat as claimed in claim 1, further
comprising a middle cushion layer between said inner shell and said
outer shell.
Description
SUMMARY OF THE INVENTION
[0001] A compound material bat comprising: a hitting part with a
large diameter and a holding part with a smaller diameter; it forms
a conical area at the shoulder of where the hitting part and the
holding part connects. Wherein the improvement is characterized in
that the holding part is including an inner shell and an outer
shell, said inner shell has better rigidity or stiffness then said
outer shell and said outer shell has a better flexibility then said
inner shell. Said outer shell of said holding part made of
reinforced fiber thermoplastic and said inner shell of said holding
part made of reinforced fiber thermosetting material or metal.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to sports products and, more
specifically, to a composite material bat using in baseball or
softball.
[0004] 2. Description of the Related Art
[0005] A bat has basic limitations of weight and size. Manufactures
must design difference functions for the hitting portion holding
portion and bending portion of the bat under these limitations in
order to make best performance. As usually, the hitting portion
requires more intensity and impact resistance and the design for
the holding portion requests better cushion and confidence of
holding and the bending point is also an important subject for the
designer. As we know, a whole bat usually made of same material.
These materials can be wood metal or reinforced fiber composite.
Some of these designs are focus on the hitting portion and make a
regional stepped up design. However, the same material bat is
difficult to combine these different requests of hitting portion
and holding portion. Moreover, most of these prior arts focused on
the hitting portion of the bat. There were few cases focused on the
holding portion and tried to improve it. For example, the U.S. Pat.
No. 5,131,651 is the one who focused on the cushion and the
flexibility in these few cases. Especially, said case makes plural
holes between the holding portion and the conical bending portion
then cover a cover layer at the out side in order to increase the
flexibility and cushion and reduce rigidity. But, it will be
complicate to form plural holes on the reinforced carbon fiber
material in the production process.
[0006] The main object of the present invention is to provide a
composite material bat which has a better cushion and flexibility
at holding portion while not affecting the structure strength of
the hitting portion.
[0007] In order to reach the main object, present invention is to
provide a composite material bat, which is combined with a hitting
part with a large diameter and a holding part with a smaller
diameter. Said holding part is combined with an inner shell and an
outer shell. Said inner shell has better rigidity then said outer
shell and said outer shell has a better flexibility then said inner
shell. By the way, it can make the holding part performing better
cushion and the flexibility and also maintain the sufficient
intensity of the structure. Said hitting part which can be designed
separately can create a bat with best performance by using the more
impact resistance materials and structures.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is the view of the outer shape of first embodiment of
the present invention.
[0009] FIG. 2 is a sectional assembly view of the section line 2-2
shows in FIG. 1.
[0010] FIG. 3 is a sectional assembly view of the section line 3-3
shows in FIG. 1.
[0011] FIG. 4 is a diagram showing the force which functions on the
holding part when the holding part of the present invention is
bending.
[0012] FIG. 5 is a sectional assembly view like FIG. 3 of the
second embodiment of present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0013] Referring to FIGS. 1 to 3, a bat of present invention is
combined with a tube shaped hitting part 10 that has a large
diameter and a tube shaped holding part 20 that has a smaller
diameter. It forms a conical area at the shoulder of where the
hitting part and the holding part connects. Said holding part
includes an inner shell 21 and an outer shell 22. Said inner shell
21 made of reinforced fiber thermosetting plastic (e.g. carbon
fiber or glass fiber or boron fiber reinforced epoxy.) or metal
(e.g. alloy of aluminum or titanium or magnesium etc.) or
thermoplastic with better rigidity. These materials provide better
rigidity. Said outer shell 22 made of reinforced fiber
thermoplastic or reinforced engineering plastic (e.g. reinforced
fiber nylon of carbon or glass or boron.) Said outer shell provides
better flexibility and cushion but less rigidity or stiffness than
the inner shell.
[0014] Referring to FIG. 4, it shows the force functions on the
holding part 20 of the bat when the bat hitting a ball. Said bat
will bend when it hit a ball and suffer a force F. The holding part
will bear the tension f1-f2 in the FIG. 4 side A and the
compression P1-P2 in the FIG. 4 side B. Said outer shell 22 that
has less rigidity or stiffness can be used at the out side of the
bat to increase the flexibility and cushion. The designer can
choose appropriate materials and the thickness to design a perfect
holding part by the way of using different material at the inner
shell and the outer shell. Moreover, the design can produce a bat
that has a best performance at all respects and excellent hitting
feeling by the way of selecting reinforced hitting part.
[0015] Referring to the FIG. 5, it is a view that shows the
structure of the second embodiment of present invention. In this
embodiment, said inner shell 31 made of metal and outer shell 32
made of thermoplastic. Moreover, there is a middle cushion layer 33
between the inner shell 31 and the outer shell 32. Said middle
layer made of materials with energy absorption property like butyl
rubber to absorb the shock wave of hitting and reduce the harm of
the arm of the batter furthermore.
* * * * *