DISPOSITIF D'ENTRAINEMENT SPORTIF

SPORTS TRAINING DEVICE

Abrégé anglais

A B S T R A C T
This invention is a device which is used by beginner tennis
players, or players in similar games, in learning the control
of the bending of the wrist. It consists of a wrist band and
a finger band which are joined together so that the bending of
the wrist during the playing of the game pulls and activates
an electrical switch which is attached to one of the said
bands, thus activating a sensor which gives a audible or visible
signal, and which , at the same time, makes a graphic record
of the bending of the wrist, which can be studied at a future
date, for the purpose of analysis and correction.

Revendications

The embodiments of the invention in which an
exclusive property or privilege is claimed are defined as
follows,-
1. A device used in the training of athletes to
properly perform motions required in the playing of such games
wherein the throwing or striking of an object is involved,
comprising means for emitting an audible or visible signal
when an undesirable movement of a body part takes place, con-
sisting of a pair of bands, each one of which is removably at-
tachabl to each of two adjacent, flexibly joined parts of the
body; in combination with a pull type of electrical switch
attached to one of said bands, and its pull cord directly at-
tached to the other band, so that the bending of one of said
body parts, in relation to the other, pulls and activates said
switch, as long as the pull cord is in tension; an electrical
sounding or lighting device which is activated by said switch;
batteries for supplying power to the device; and a recording
device for recording the number and frequency of said signals.
2. A device as set forth in Claim 1, used for the pur-
pose of training a novice in the playing of tennis, not to
bend the wrist when striking the tennis ball with the tennis
racket, by attaching the switch containing band to the wrist
of the hand that holds the racket, and the other band to one
of the fingers of said hand, so that the bending of the wrist
while striking the ball, emits a sound or flashes a light to
warn the player that he is bending his wrist while striking
the ball, and makes a graphic record of the bending movement.
3. A device as set forth in Claim 2 which is used for
the purpose of detection and treatment of malfunctioning flex-
ibly joined parts of the anatomy.

Description

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S P E C I F I C A T I 0 N
This invention is a device which is used ~or the
purpose of improving a person's game, partiQu~à~*yr;~u~g ~s
or her training period, in sports which involves such actions
as striking and throwing, as in tennis, golf, bowling, etc.
In playing such games, all the flexible interconnected
parts of the anatomy tend to participate in all the motions
called for in the game. Although, in some sports, such as
gymnastics or wrestling this total participation, is in most
cases of great value, in other sports, where the throwing
or striking is directed in a specific direction and under
controlled power, some body motions can actually be detri-
mental to the proper playing of the game.
A game in which the above described difficulties
appear more frequently than in others, is the game of tennis,
which will be used to illustrate the invention. In tennis
a ball is struck by players playing against each other over
a low net which divides the tennis court into half. The
ball is struck by a tennis racket held in one hand by each
of the players. The object of the game is to deliver the
ball rapidly and to a location not readily available to the
opposite player, so that he is unable to return the ball
successfully. In order to accomplish the above requirements,
the ball must be properly aimed and struck with a great deal
of power, which can best be done by swinging the arm from
2~ the shoulder instead of bending it at the elbow, and pre-
venting the hand from bending at the wrist.
During the learning period, the beginner is well
advised to obtain the services of an instructor, however,
instructors are not always available, particularly so, during
frequent practice~periods. It is therefore the primary object

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of this invention to provide a means whereby a player can
be automatically informed of errors, so -that he can learn
tG avoid them.
In describing the invention reference can be made
tG the attached drawings in which,-
Figure 1, is a front view of the in~en-tion,
Figure 2, is a diagram showing the invention in
use, and
Figure 3, shows a variation of the invention.
In describing,the invention is shown consisting
of an arm band 1 made of a strong flexible material such as
cloth or plastic, having a buckle 2 at one end thereof, and
a tongue 3 at the other end. The inside of the hand 1 is
lined with a soft component 4 of the adhesive system having
the trademark name of "Velcro". At its tongue end, the said
arm band i8 provided with the other part of the "Velcro" T.~.
adhesive.
At a suitable location along the arm band is
attached a switch 6 which is activated by a pulling upon
a wire loop 7 which is connected to it. The said switch is
powered by a fine wire cable 8 which is connected to batteries.
A short plastic or cloth loop 9 connects the switch
6 by means of the wire loop 7 to a finger band 10, which is
also provided with "Velcro" T.M. adhesive 11.
In Figure 2 is shown the manner in which the invention
is attached to the arm 12, of the person holding the tennis
racket 13. The band 1 is wrapped around and held to the
wrist. The band 10 is wrapped around one of the fingers of
the hand, so that the loop 9 is fully stretched out when
the hand has a good grip on the tennis racket 13, and the
wrist is not bent.
The wire ~ from the switch 6 leads to a sensor 14
which si~nalæ~audibly or visually when the switch 6 is

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activated, thus, when the wrist is bent during the striking
of the tennis ball, the loop 9 is pulled, activating -the
switch 6, causing the signal to be noted; the player realizes
that he has bent his wrist, and avoids doing it again. The
5 recorder also contains the power batteries. Where necessary,
the recorder can keep a record of the number and frequency
of the wrist bending occurrences.
The upper arm band 15, shown in Figure 2 is used
purely as an additional support for the wire 8 when the
sensor 14 is carried by the player at a distant location,
usually attached to his clothing, and does not otherwise par-
ticipate in the performance of the invention.
In Figure 3 is shown a variation in the invention.
In this case the finger band 10 is replaced by a glove 16,
and the sensa~ ~4 is replaced by the recording or sound
device 17 which is attached to the glove and is directly con-
nected to the switch 6, by a wire 18 which also activates
the said switch, when the wrist is bent.
From the above description it can be readily seen
that this invention can also be applied to the study,
diagnosis, and therapeutic treatment of malfunctions occurring
in any location of the anatomy where two members o~ the body
are flexibly joined, such as the ankles, knees, hips, shoulders,
spine, neck, etc., or for correcting the performance in
~5 sports, where these locations are involved.
The audible and visual signals can also be accompa-
nied by a graphical recording system which can be transmit-
ted to a television viewer for an enlarged detailed study.