U.S. patent application number 10/192619 was filed with the patent office on 2004-01-15 for golf club with weight device.
Invention is credited to Shaw, Ching-Song.
Application Number | 20040009824 10/192619 |
Document ID | / |
Family ID | 30114377 |
Filed Date | 2004-01-15 |
United States Patent
Application |
20040009824 |
Kind Code |
A1 |
Shaw, Ching-Song |
January 15, 2004 |
Golf club with weight device
Abstract
A golf club comprises a shaft, a head and a weight device. The
shaft has a tip end, a butt end and a tunnel therein. The head is
secured to the shaft at the tip end thereof. The weight device is
installed in the tunnel of the shaft for free sliding. The weight
device is changeable in shape, such as metal sands, metal balls and
liquid etc., so that the center of gravity of the weight device can
close to the tip end and the butt end of the shaft as possible when
backswing and downswing.
Inventors: |
Shaw, Ching-Song; (Taichung,
TW) |
Correspondence
Address: |
BACON & THOMAS, PLLC
625 SLATERS LANE
FOURTH FLOOR
ALEXANDRIA
VA
22314
|
Family ID: |
30114377 |
Appl. No.: |
10/192619 |
Filed: |
July 11, 2002 |
Current U.S.
Class: |
473/226 |
Current CPC
Class: |
A63B 60/06 20151001;
A63B 53/00 20130101; A63B 60/10 20151001; A63B 49/00 20130101; A63B
60/08 20151001; A63B 53/12 20130101; A63B 53/10 20130101; A63B
60/04 20151001 |
Class at
Publication: |
473/226 |
International
Class: |
A63B 069/36 |
Claims
What is claimed is:
1. A golf club, comprising: a shaft having a tunnel therein; a head
secured to a tip end of the shaft, and a weight device installed in
said tunnel of said shaft for free sliding; said weight device is
changeable in shape so that the center of gravity of said weight
device can close to the opposite ends of said tunnel as possible
when backswing and downswing.
2. The golf club as defined in claim 1, wherein said weight device
is metal sands, each of which is smaller than any diameter of said
tunnel in cross-section.
3. The golf club as defined in claim 1, wherein said weight device
is metal balls, each of which is smaller than any diameter of said
tunnel in cross-section.
4. The golf club as defined in claim 3, wherein said weight device
is liquid.
5. The golf club as defined in claim 1, wherein said weight device
is received in a bag which is installed in said tunnel.
6. The golf club as defined in claim 1, wherein said shaft is
provided with two buffer members in said tunnel respectively at the
opposite ends thereof.
7. A golf club, comprising: a shaft having a tunnel therein; a head
secured to a tip end of the shaft, and a weight device installed in
said tunnel of said shaft for free sliding; wherein said weight
device has at least a block which is smaller than any diameter of
said tunnel in cross-section.
Description
FIELD OF THE INVENTION
[0001] The present invention related to a golf club, and more
particularly to a golf club with a weight device.
BACKGROUND OF THE INVENTION
[0002] A golf club is improved for a golf player can hit the ball
farther and accurately. Today, the golf club is designed to meet
the physical power of individual player. So, a new golf club must
have a smaller weight, a superior capacity to absorb vibration and
to drive the ball father.
[0003] A conventional golf club provided with a bar member to
increase the capacity of the golf club to hit the ball farther. The
bar member has a long bar at an end thereof and a short bar at the
other end thereof. The bar member is received in a shaft of the
golf club for free sliding. The bar member will shift to the butt
end of the shaft in backswing and will shift to the tip end of the
shaft in downswing. Thus, the bar member will provide an extra
momentum in downswing to make the golf club can hit the ball
farther.
[0004] The aforesaid invention still can not make the bar member
providing largest power in increasing momentum, because of the
center of gravity of the bar member can not reach the tip end and
the butt end of the shaft.
SUMMARY OF THE INVENTION
[0005] The primary objective of the present invention is to provide
a golf club, which can hit a ball farther.
[0006] The second objective of the present invention is to provide
a golf club, which has a simple structure and a lower cost to
complete the primary objective.
[0007] According to the objectives of the present invention, a golf
club comprises a shaft, a head and a weight device. The shaft has a
tunnel therein. The head is secured to the shaft at an end thereof.
The weight device is installed in the tunnel of the shaft for free
sliding. The weight device is changeable in shape so that the
center of gravity of the weight device can close to the opposite
ends of the tunnel as possible when backswing and downswing.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a schematic perspective view of a first prefer
embodiment of the present invention;
[0009] FIG. 2 is a schematic perspective view of a second prefer
embodiment of the present invention;
[0010] FIG. 3 is a schematic perspective view of a third prefer
embodiment of the present invention;
[0011] FIG. 4 is a schematic perspective view of a fourth prefer
embodiment of the present invention;
[0012] FIG. 5 is a schematic perspective view of a fifth prefer
embodiment of the present invention;
[0013] FIG. 6 is a schematic perspective view of a sixth prefer
embodiment of the present invention;
DETAIL DESCRIPTION OF THE INVENTION
[0014] Please refer to FIG. 1, a golf club 10 of the first prefer
embodiment of the present invention comprises a shaft 11, a head 12
and a weight device 16. The shaft 11 has a tip end where to secure
the head 12 and a butt end where to mount a grip (not shown). The
shaft 11 has a tunnel 15 therein in which install the weight device
16 for free sliding along the tunnel 15.
[0015] The weight device 16 of the first prefer embodiment is metal
sands (such as iron sands). Each metal sand 16 is smaller than the
diameter of the tunnel 15 of the shaft 11 along the cross-section
thereof. The sands 16 will shift to the butt end of the shaft 11 in
backswing and will shift to the tip end thereof in downswing.
Because of the sands 16, similar to liquid, has no rigid shape so
that the center of gravity of the sands 16 will close to the tip
end and the butt end of the shaft 11 as possible when backswing and
downswing. Thus, the shifting distance of the center of gravity of
the sands 16 when downswing is larger than the prior did, in other
words, the golf club 10 of the present invention will provide a
larger momentum when downswing to hit the ball farther.
[0016] The advantages of the present invention are:
[0017] 1) The shifting distance of the center of gravity of the
weight device 16 is larger than the prior art so that it can
provide a larger momentum in downswing to hit the ball farther.
[0018] 2) The weight device 16 will shift to the butt end of the
shaft 11 as possible in backswing to reduce the loading for the
player to lift the head 12 and the weight device 16 will shift to
the tip end of the shaft 11 as possible in downswing to increase
the momentum of the head 12 for the hitting the ball farther.
[0019] 3) Because of the weight device 16 (the sands) has no rigid
shape, it can close the tip end and the butt end of the shaft 11 as
possible no matter what kind of the shape of the shaft 11.
[0020] FIG. 2 shows a golf club 20 of the second prefer embodiment
of the present invention, which is similar to the first prefer
embodiment, except that a weight device 26 is metal balls installed
in a tunnel 25 of the shaft. The balls 26 may have different sizes
but they are smaller than the any diameter of the tunnel 25 along
the cross-section thereof. The function and the advantages of the
golf club 20 of the second prefer embodiment are as same as the
first prefer embodiment, so will not describe again.
[0021] FIG. 3 shows a golf club 30 of the third prefer embodiment
of the present invention, which install liquid (such as water or
mercury etc.) into the tunnel 35 to be a weight device 36. Of
course, the tunnel 35 must be watertight.
[0022] FIG. 4 shows a golf club 40 of the fourth prefer embodiment
of the present invention. A weight device 46 installed in a tunnel
45 is composed of a bag 461 and a weight member 462 received in the
bag 461. The weight member 462 can be sands, balls or liquid as
described in aforesaid prefer embodiments.
[0023] FIG. 5 shows a golf club 50 of the fifth prefer embodiment
of the present invention, which provide two buffer members 57 at
the opposite ends of a tunnel 55 respectively and a weight device
56 installed in the tunnel 55. The weight device 56 can be any type
of the aforesaid prefer embodiments. The buffer members 57 are to
reduce the impact when the weight device 56 hitting the tip end and
the butt end of the shaft when backswing and downswing.
[0024] FIG. 6 shows a golf club 60 of the sixth prefer embodiment
of the present invention which provides a weight device 66
installed in a tunnel 65. The weight device 66 is a block in this
prefer embodiment having a size smaller than any diameter of the
tunnel 65 along the cross-section thereof.
* * * * *