U.S. patent application number 12/937297 was filed with the patent office on 2011-02-10 for baseball swing training device.
Invention is credited to Hyensoo Kim.
Application Number | 20110034275 12/937297 |
Document ID | / |
Family ID | 41603352 |
Filed Date | 2011-02-10 |
United States Patent
Application |
20110034275 |
Kind Code |
A1 |
Kim; Hyensoo |
February 10, 2011 |
BASEBALL SWING TRAINING DEVICE
Abstract
A baseball swing practicing device according to the present
invention includes a fixed weight (20) fixed at one end of a shaft
(10), a grip unit (30) fixed at the other end of the shaft (10), a
movable weight (42) fitted onto the shaft such that the movable
weight moves via centrifugal force along the shaft (10) during a
swinging action, an elastic repulsion member (44) fitted to the
shaft (10) at the side between the movable weight (42) and the
fixed weight (20) to provide an elastic repulsion force for an
accurate timing by adjusting the speed where the movable weight
(42) collides with the fixed weight (20) in accordance with the
swing speed, and a stopper (46) fitted to the shaft (10) at the
side between the movable weight (42) and the grip unit (30) to
adjust the moving range of the movable weight (42). The baseball
swing training device of the present invention enables the timing
of an impact moment in a swinging action and the timing of a
hitting moment in an actual hitting action to accurately correspond
to each other, and allows adjustment of the device in accordance
with the ability of the player using the device. The repeated
actual swing training not only increases the wrist force but also
improves power and swing speed in an efficient manner, and enables
a player to visually confirm the impact moment and the arc
trajectory during the daytime and the nighttime via the light
emitted from a luminous body or a flicker as well as the sound
(hitting sound) at the impact moment during the swing training,
thus correcting the hitting posture and increasing the
concentration at the hitting moment.
Inventors: |
Kim; Hyensoo; (Gyeonggi-do,
KR) |
Correspondence
Address: |
IPLA P.A.
3550 WILSHIRE BLVD., 17TH FLOOR
LOS ANGELES
CA
90010
US
|
Family ID: |
41603352 |
Appl. No.: |
12/937297 |
Filed: |
May 14, 2009 |
PCT Filed: |
May 14, 2009 |
PCT NO: |
PCT/KR09/02557 |
371 Date: |
October 11, 2010 |
Current U.S.
Class: |
473/457 |
Current CPC
Class: |
A63B 2071/0633 20130101;
A63B 15/02 20130101; A63B 2225/74 20200801; A63B 69/0002 20130101;
A63B 60/04 20151001; A63B 15/005 20130101; A63B 2069/0008
20130101 |
Class at
Publication: |
473/457 |
International
Class: |
A63B 69/00 20060101
A63B069/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 16, 2008 |
KR |
10-2008-0045539 |
May 13, 2009 |
KR |
10-2009-0041582 |
Claims
1. A baseball swing practicing device comprising: fixed weight (20)
fixed at one end of a shaft (10), a grip unit (30) fixed at the
other end of the shaft (10), a movable weight (42) fitted onto the
shaft such that the movable weight moves via centrifugal force
along the shaft (10) during a swinging action, an elastic repulsion
member (44) fitted to the shaft (10) at the side between the
movable weight (42) and the fixed weight (20) to provide an elastic
repulsion force for an accurate timing by adjusting the speed where
the movable weight (42) collides with the fixed weight (20) in
accordance with the swing speed, and a stopper (46) fitted to the
shaft (10) at the side between the movable weight (42) and the grip
unit (30) to adjust the moving range of the movable weight (42),
wherein a big drilled hole (42b) is formed, which is greater than
the external diameter of the shaft, so that the movable weight (42)
can easily move along the shaft toward the center axis of the body
(42a), wherein a protrusion (42c) is formed, which is smaller than
the body (42a), so that one side of the elastic repulsion member
(44) can be fixed into body (42a) and at the same time fitted onto
the external diameter.
2. The apparatus of claim 1, wherein is screw connected between the
shaft (10) and fixed weight (20) for correspondence.
3. The apparatus of claim 1, wherein a luminous body (22) is
attached to the fixed weight (20).
4. The apparatus of claim 1, wherein the switch (60) is removable
at the end of the perimeter of the fixed weight (20).
5. The apparatus of claim 1, wherein the elastic repulsion member
(44) is a coil spring form, such that when one end touching the
fixed weight (20) heads toward the other end touching the movable
weight (42) the pitch is more narrowed.
6. The apparatus of claim 1, wherein a control bolt (48) is setup
for the stopper (46) to connect with one of the many fixed holes
that are forming the shaft (10) on the circumference of the stopper
(46).
7. The apparatus of claim 1, wherein the shaft (10) is used as a
carrier to include additional subsidiary movable weight (50), which
is located between the stopper and the movable weight.
Description
TECHNICAL FIELD
[0001] The present invention relates to practice baseball swings
applied to practice baseball bats. In particular, to deal with the
pitcher's fast pitches the impact using the baseball swing
practicing device exactly matches actual hitting moment. The device
strengthens the wrist and optimizes the power and speed of the
hitter's swing. The strike sound and swing trajectory is visible,
which enables the hitter to adjust their swing and enhance their
concentration when swinging.
BACKGROUND ART
[0002] Generally, players use conventional hitting devices that
automatically pitch balls or hit a fixed object several times using
the bat.
[0003] Players practice their swings many times before the actual
match to maintain the efficiency of swinging senses.
[0004] Currently, players swing two or three bats, according to the
hitter, and practice their hitting.
[0005] This method is used before the player is actually put into
the game because they remember the weight of the bat at
practice.
[0006] However, when repeating this method may cause problems in
their swinging stance and cause issues that the hitter cannot
actually confirm their balance at swinging point and may not
perform a proper stance.
[0007] To solve the problems of conventional swinging practices,
the fixed weight was fixed at one end of the shaft and grip unit
fixed at the other end and a movable weight was fitted onto the
shaft such that the movable weight moves via centrifugal force
along the shaft during the swinging action, which makes a hitting
sound proportional to the impact on the fixed weight.
[0008] However, this type of swinging practice device cannot
prepare the hitter for various pitching and fast pitching of the
pitcher and also cannot strengthen the wrist and optimize the power
and speed of swings, which causes issues hitting and long hitting
rates, due to the reason that the movable weight hitting the fixed
weight according to centrifugal force does not completely help find
the hitting moment.
[0009] Furthermore, correcting swinging stances and concentration
is a great issue because the impact and trajectory of the swing at
day and night cannot be visually confirmed.
SUMMARY OF THE INVENTION
[0010] Taking the issues into account the purpose of the present
invention is to practice synchronizing the impact when swinging and
impact when actually hitting the baseball, as well as, the
enhancement of wrist power and optimization of the swing in power
and speed.
[0011] The present invention not only provides hitting sounds at
the impact moment during practice regardless of the time, but also
provides visual confirmation on the swing trajectory and enhances
concentration at the hitting moment.
[0012] The present invention is designed to adjust the device
according to the hitter's ability.
[0013] The present invention comprises: a movable weight fitted
onto the shaft such that the movable weight moves via centrifugal
force along the shaft during a swinging action, an elastic
repulsion member fitted to the shaft at the side between the
movable weight and the fixed weight to provide an elastic repulsion
force for an accurate timing by adjusting the speed where the
movable weight collides with the fixed weight in accordance with
the swing speed, and a stopper fitted to the shaft at the side
between the movable weight and the grip unit to adjust the moving
range of the movable weight.
[0014] A big drilled hole is formed, which is greater than the
external diameter of the shaft, so that the movable weight can
easily move along the shaft toward the center axis of the body. A
protrusion is formed, which is smaller than the body, so that one
side of the elastic repulsion member can be fixed into body and at
the same time fitted onto the external diameter.
[0015] As a preferred embodiment, the present invention has a
luminous body attached to the fixed weight.
[0016] As a preferred embodiment, the present invention has a
switch that is removable at the end of the perimeter of the fixed
weight
[0017] As a preferred embodiment, the present invention has an
elastic repulsion member that is a coil spring form; such that when
one end touching the fixed weight heads toward the other end
touching the movable weight the pitch is more narrowed.
[0018] As a preferred embodiment, the present invention has a
control bolt that is setup to connect with one of the many fixed
holes that are forming the shaft on the circumference of the
stopper.
[0019] As a preferred embodiment, the present invention has a shaft
that is used as a carrier to include additional subsidiary movable
weight, which is located between the stopper and the movable
weight.
[0020] The present invention has an elastic repulsion force that
provides accurate timing by adjusting the speed of the movable
weight where the movable weight moves via centrifugal force during
the swing. The repetition of practicing swings influences the
strengthening of the wrist and optimizes power and speed of the
swing.
[0021] In addition, by attaching a luminous body onto the perimeter
of the fixed weight visual confirmation, along with the sound at
impact, can be made while practicing swings. The light from the
luminous body aids the player in correcting the swinging stance and
enhancing concentration by showing the impact moment and trajectory
of the swing.
[0022] Also, the grip unit and shaft are removable, where
subsidiary movable weight can be additionally setup or an elastic
repulsion member with greater elastic repulsion force can be
replaced to the shaft, so that players can adjust according to
their abilities.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023] FIG. 1 and FIG. 4 illustrates the first preferred
embodiment.
[0024] FIG. 1 illustrates the whole perspective view.
[0025] FIG. 2 illustrates the whole cross-sectional view.
[0026] FIG. 3 illustrates the whole cross-sectional view before the
swing.
[0027] FIG. 4 illustrates the whole cross-sectional view after the
swing.
[0028] FIG. 5 and FIG. 8 illustrates the second preferred
embodiment.
[0029] FIG. 5 illustrates the whole cross-sectional view.
[0030] FIG. 6 illustrates the whole disassembled cross-sectional
view.
[0031] FIG. 7 illustrates the unit cross-sectional view of the
switch attached to the fixed weight.
[0032] FIG. 8 illustrates the unit cross-sectional view of the grip
unit and shaft connection.
TABLE-US-00001 <Significant Terms for Figures> 10: shaft 12:
fixed hole 20: fixed weight 30: grip unit 32: insert hole 40:
swinging adjustment unit 42: movable weight 42a: body 42b: drilled
hole 42c: protrusion 44: elastic repulsion member 46: stopper 48:
control bolt 50: subsidiary movable weight 60: switch 70: fixed
bolt
DETAILED DESCRIPTION OF THE INVENTION
[0033] Below, the first preferred embodiment will explained and
FIG. 1 or FIG. 4 can be used as reference.
[0034] The present invention comprises: a shaft 10, fixed weight 20
fixed at one end of a shaft 10, a grip unit 30 fixed at the other
end of the shaft 10, a movable weight 42 fitted onto the shaft such
that the movable weight moves via centrifugal force along the shaft
10 during a swinging action.
[0035] Thus, the shift uses rigid material, such as, stainless
pipe. Fixed holes 12 are formed along the perimeter with a constant
interval so that the stopper can be fixed at one of the holes for
the swinging adjustment unit 40. A flange 14 is formed to match the
fixed weight 2 so that the swinging adjustment unit 40 does not
breakaway when impact occurs among the movable and fixed weight
20.
[0036] The fixed weight is a cylindrical form that uses metal,
wood, rubber and fiber as its material. A drilled hole 20a is
formed in the center of the axis direction, where the shaft 10 is
inserted, furthermore, on one side of the drilled hole 20a a first
stepped hole 20b is a coaxial form so that the flange 14 of the
shaft 10 is clinked. For the center of the axis direction, the
second stepped hole 20c is a coaxial form so that elastic repulsion
member 44 can be inserted later on the fitted swinging adjustment
unit 40 on the other side of shaft 10 of the drilled hole 20a.
[0037] Furthermore, a luminous body 22 is attached to the perimeter
of the fixed weight 20.
[0038] The grip unit 30 uses wood, rubber and fiber as its material
and properly uses wood to insert and fix the shaft 10 into the
center using adhesives. The exterior form can be the shaped to
resemble the handle of a baseball bat.
[0039] Swinging adjustment unit 40 comprise of a movable weight 42
fitted onto the shaft such that the movable weight moves via
centrifugal force along the shaft 10 during a swinging action, an
elastic repulsion member 44 fitted to the shaft 10 at the side
between the movable weight 42 and the fixed weight 20 to provide an
elastic repulsion force for an accurate timing by adjusting the
speed where the movable weight 42 collides with the fixed weight 20
in accordance with the swing speed, and a stopper 46 fitted to the
shaft 10 at the side between the movable weight 42 and the grip
unit 30 to adjust the moving range of the movable weight 42.
[0040] The movable weight 42 is a cylindrical form that uses metal,
wood, rubber and fiber as its material. A big drilled hole 42b is
formed, which is greater than the external diameter of the shaft,
so that the movable weight 42 can easily move along the shaft
toward the center axis of the body 42a. Protrusion 42c is formed,
which is smaller than the body 42a, so that one side of the elastic
repulsion member 44 can be fixed into body 42a and at the same time
fitted onto the external diameter.
[0041] The elastic repulsion member is a coil spring form, such
that when one end touching the fixed weight 20 heads toward the
other end touching the movable weight 42 the pitch is more
narrowed
[0042] A control bolt 48 is setup for the stopper 46 to connect
with one of the many fixed holes that are forming the shaft 10 on
the circumference of the stopper 46.
[0043] In the figure unit 24, which has no reference, is the finish
material fixed by injection on the first stepped hole 20b of the
fixed weight 20.
[0044] Next, the second preferred embodiment will explained and
FIG. 5 or FIG. 8 can be used as reference.
[0045] For reference, the present invention performed the same form
for the second preferred embodiment as the first, so terms and
signs will be maintained with no further explanation.
[0046] For the second preferred embodiment comprise of a shaft 10,
a fixed weight 20 fixed at one end of a shaft 10, a grip unit 30
fixed at the other end of the shaft 10, a movable weight 42 fitted
onto the shaft such that the movable weight moves via centrifugal
force along the shaft 10 during a swinging action, an elastic
repulsion member 44 fitted to the shaft 10 at the side between the
movable weight 42 and the fixed weight 20 to provide an elastic
repulsion force for an accurate timing by adjusting the speed where
the movable weight 42 collides with the fixed weight 20 in
accordance with the swing speed, and a stopper 46 fitted to the
shaft 10 at the side between the movable weight 42 and the grip
unit 30 to adjust the moving range of the movable weight 42, and
subsidiary movable weight 50 that helps empower the swing, which is
located between the stopper 46 and the movable weight 42.
[0047] A removable switch 60 is setup at the end of the perimeter
of the fixed weight 20, so that the impact moment and swing
trajectory can be confirmed to also correct the swing stance while
swinging and enhance concentration. The switch 60 is setup in a
case that illuminates with a LED lamp, impact sensor, timer that
operates via the sensor, switching socket to control the timer, and
a battery that using the switching socket to provide power to the
LED lamp.
[0048] The grip unit 3 forms insert holes 32 that fit the shaft 10
on one side of the body at a constant depth. The inner perimeter of
the insert holes 32 and outer perimeter of the shaft 10 are screw
connected forming a spiral side 16 34. The outer side of the body
has a fixed bolt 70 that drills through the grip unit 30 so that
the shaft 10 does not move or rotate from the grip unit 30.
[0049] Thus, the fixed bolt 70 is screw connected that makes the
grip unit 30 dented and binds the outer perimeter of the shaft 10
strongly to the end.
[0050] Subsidiary movable weight 50 uses metal, wood, rubber and
fiber as its material and forms a ring effect from the weighed
material.
[0051] Next, the actions and effects of the first and second
preferred embodiment are introduced.
[0052] When the trainee holds the grip unit 30 and stances, the
movable weight 42 moves along the shaft 10 toward the grip unit 30
according to the weight and elastic repulsion force of the elastic
repulsion member 44 as in FIG. 3.
[0053] When swinging the bat, the movable 42 moves along the shaft
10 toward the fixed weight 20 according to the weight and
centrifugal force, so that the elastic repulsion member 44 of coil
spring form pressurized and at the same time causes an impact
sound.
[0054] Since the applied elastic repulsion member 44 narrows the
pitch as one end touching the fixed weight 20 heads toward the
other end touching the movable weight 42, the speed of the swing
degree can be adjusted according to the elastic repulsion
force.
[0055] For example, if the centrifugal force greatly exceeds the
elastic repulsion force of the elastic repulsion member 44 the
movable weight 42 impacts the fixed weight 20 greatly, which
results in a loud hitting sound. On the other hand, when the
centrifugal force nearly exceeds the elastic repulsion force of the
elastic repulsion member 44 the movable weight 42 impacts the fixed
weight 20 subtly, which results in a different sound.
[0056] However, if the centrifugal force is less than the elastic
repulsion force of the elastic repulsion member 44 the movable
weight 42 will not be able to reach the fixed weight 20 and no
impact or sound will occur.
[0057] Additionally, according to the replacement of the movable
weight 42 and subsidiary movable weight along with the elastic
repulsion member 44 with different elastic repulsion force, the
trainees can adjust the difficulty of the device. This
characteristic provides the trainee to accurately practice the
timing of the swing and empower the wrist, as well as, optimize the
speed and power of their swing.
[0058] Thus, the shaft 10 and grip unit 30 are screw connected and
removable as shown in FIG. 6, so that when the grip unit 30 is
detached from the shaft 10, a subsidiary movable weight 50 can be
added in between the stopper 46 and movable weight 42 at the end of
the shaft 10 or replacing the elastic repulsion member 44 with a
greater elastic repulsion force, the device requires more power and
speed in the trainees swings. This function can help the trainees
to manage different speeds and styles of pitching.
[0059] Since the elastic repulsion force of the elastic repulsion
member 44 can be adjusted according to the position of the stopper
46, the movable weight 42 and subsidiary movable weight 50 speed,
staring point, weight and swing trajectory according to the
trainee's swinging stance and speed can change the centrifugal
force.
[0060] The luminous body 22 and switch 60 attached onto the
perimeter of the fixed weight 20 causes the swinging practice
visual effects and aids other than impact sounds so that the impact
moment and swinging trajectory can be confirmed to correct the
swinging stance and also enhance concentration.
[0061] As the present invention may be embodied in several forms
without departing from the spirit or essential characteristics
thereof, it should also be understood that the above-described
examples are not limited by any of the details of the foregoing
description, unless otherwise specified, but rather should be
construed broadly within its spirit and scope as defined in the
appended claims, and therefore all changes and modifications that
fall within the meets and bounds of the claims, or equivalences of
such meets and bounds are therefore intended to be embraced by the
appended claims.
* * * * *