U.S. patent number 3,655,202 [Application Number 04/867,448] was granted by the patent office on 1972-04-11 for golf game.
This patent grant is currently assigned to Brunswick Corporation. Invention is credited to Michael G. Gautraud, James W. Sanders.
United States Patent |
3,655,202 |
Gautraud , et al. |
April 11, 1972 |
GOLF GAME
Abstract
A tee trigger for use in computerized golf games. There is
provided an overhead light source which generates a a line of light
crossing a tee area in such a way that a ball hit from a line
simulating means will break the line of light and reflect light to
an overhead photocell to generate a first signal. A second
signalling device is spaced from the projected line of light and
provides a second signal when the ball reaches that point and the
time between the two signals is indicative of the ball's velocity.
Through the use of the line of light, the life of the lie
simulating means may be increased inasmuch as the ball need not be
placed at but a single point thereon for each shot.
Inventors: |
Gautraud; Michael G. (Muskegon,
MI), Sanders; James W. (Grand Haven, MI) |
Assignee: |
Brunswick Corporation
(N/A)
|
Family
ID: |
25349790 |
Appl.
No.: |
04/867,448 |
Filed: |
October 20, 1969 |
Current U.S.
Class: |
473/155 |
Current CPC
Class: |
A63B
24/0021 (20130101); A63B 69/3658 (20130101); A63B
2024/0031 (20130101); A63B 2024/0037 (20130101); A63B
2220/30 (20130101); A63B 2220/805 (20130101); A63B
2024/0034 (20130101) |
Current International
Class: |
A63B
69/36 (20060101); A63b 067/02 (); A63b
069/36 () |
Field of
Search: |
;273/183,184,185,186,176
;73/379 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
1,111,996 |
|
May 1968 |
|
GB |
|
721,170 |
|
Nov 1965 |
|
CA |
|
Primary Examiner: Marlo; George J.
Claims
We claim:
1. In a golf game having a tee area including means in the area for
simulating the lie of a portion of a golf course and from which a
golf ball may be hit from the area, a first sensing means for
determing when a golf ball has been hit from the lie simulating
means, a second sensing means forwardly of the lie simulating means
for detecting when a ball hit from the lie simulating means for
detecting when a ball hit from the lie simulating means has
traveled a predetermined distance therefrom and a computer
responsive to both said sensing means for generating trajectory
information, the improvement for maximizing the life of the lie
simulating means wherein said first sensing means comprises a light
source for projecting a line of light across said tee area in such
a position that a ball hit from the lie simulating means will pass
through the line of light, and photo-sensitive means responsive to
the ball passing through the line of light for providing said first
signal, said photo-sensitive means being positioned remote from
said lie simulating means and oriented to receive only light which
is reflected by an object passing through said line of light, and
comprising a photocell having a sensitivity such that it will
respond to an amount of light no less than that reflected by a golf
ball passing through said line of light.
2. The combination of claim 1 wherein said light providing means
projects a beam of light in a direction generally parallel to the
sensing plane of said second sensing means, and wherein said
photocell is positioned to receive substantially only that light
reflected in a direction substantially opposite to the direction of
projection of said beam of light.
3. A golf game according to claim 1 wherein said light source is
arranged to project said line of light in a direction generally
parallel to the sensing plane of said second sensing means.
4. In a golf game having a tee area including means in the area for
simulating the lie of a portion of a golf course and from which a
golf ball may be hit from the area, a first sensing means for
determining when a golf ball has been hit from the lie simulating
means, a second sensing means forwardly of the lie simulating means
for detecting when a ball hit from the lie simulating means has
traveled a predetermined distance therefrom and a computer
responsive to both said sensing means for generating trajectory
information, the improvement for maximizing the life of the lie
simulating means wherein said first sensing means comprises a light
source projecting a line of light across said lie simulating means
in a first direction generally parallel to the sensing plane of the
second sensing means so that a ball hit from any position on the
lie simulating means behind the line of light will pass through the
line of light, and photosensitive means responsive to the ball
passing through the line of light for providing said first signal
said photo-sensitive means comprising a photocell positioned to
receive only such light as is reflected substantially along the
reciprocal of said first direction by a ball passing through the
line of light.
5. A golf game according to claim 4 wherein said light source and
said photo-sensitive means are mounted above said tee area and
behind said lie simulating means with said line of light being
projected downwardly from said light source to said tee area and
crossing said lie simulating means.
6. A golf game according to claim 5 wherein said light source
projects an arcuate line of light.
Description
BACKGROUND OF THE INVENTION
The ever increasing popularity of the game of golf has resulted in
a number of proposals for golf game devices. Some such devices are
in the basic nature of practice apparatus which, by means of a
simple computer, indicate to a golfer the distance a shot would
have traveled. Some such devices also provide an indication of hook
or slice.
Other proposals include extremely complex indoor golf game systems
wherein a golfer may play, from tee to green, 18 holes utilizing a
free flying ball entirely indoors, observing the play on a
computerized display device.
In either case, the prior art has almost universally utilized a
pair of sensing devices for sensing a measure of the initial
velocity of a ball. Normally, a first sensing device is used to
sense when the ball leaves a tee point. A second sensing device is
spaced along the line of flight of the ball from the tee point a
predetermined distance and will issue a second signal when the ball
reaches that point. Depending upon the precise proposal, the second
sensing device may measure the impact of the ball against the
target or merely sense the presence of the ball in flight without
actual contact therewith.
As a result of the two sensing devices, two signals, spaced in
time, will be present and assuming that the distance between the
tee point and the second sensing device is known, a characteristic
of the initial velocity of the ball may be measured. This
information may then be used for a variety of purposes depending
upon the degree of sophistication of the equipment.
Because such devices require that the distance from the first
sensing device to the second sensing device be known, prior
proposals have all utilized a so-called "predetermined tee point"
at which the ball must be placed prior to hitting the same with the
first sensing device ascertaining when the ball has left that
point. As a result of this requirement, lie simulating means such
as a brush-like mat or carpeting material have experienced a great
deal of wear at the predetermined tee point and their life is
unduly shortened insofar as they may be worn out at the tee point
while other portions thereof are, for all intents and purposes,
brand new.
SUMMARY OF THE INVENTION
It is the principal subject of the invention to provide a new and
improved tee triggering system which will enable lie simulating
means to enjoy an extended life. The exemplary embodiment of the
invention contemplates replacing the usual sensor that senses when
a ball leaves a predetermined tee point with a light source which
projects a line of light across a tee area at a location between
the point where a ball would be hit and the customary second
signaling means. When the line of light is broken, the usual first
signal or tee trigger is generated. As the ball continues in its
trajectory and energizes the second sensing means, the second
signals previously employed is generated to provide initial
velocity related information without the requirement that the ball
be hit from the same point time after time. Wear of the lie
simulating means can be, therefore, spread out over the entire
surface of the same.
In the exemplary embodiment of the invention, the second signalling
means comprises a spherical target and the light source providing
the line of light is arranged to project the line of light as an
arcuate beam and in a direction generally parallel to the vertical
dimension of the target. A photocell is arranged in conjunction
with the light source to pick up the reflection of a golf ball
passing through the line of light to signal the computer.
DESCRIPTION OF THE DRAWING
The FIGURE is a perspective view illustrating a golf game employing
a tee trigger made according to the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
An exemplary embodiment of a tee trigger made according to the
invention is illustrated in the figure and is seen to comprise an
indoor golf game including a tee area, generally designated 10. Of
course, it is to be understood that the tee trigger is applicable
to golf devices other than indoor games such as practice devices of
the type mentioned previously. Located forwardly of the tee area 10
as a target, generally designated 12 which will receive all balls
hit from the tee area. According to one embodiment of the
invention, the target 12 may be of the type disclosed in the
copending application of Conklin et al., Ser. No. 820,558, entitled
"Spherical Shell and Spin Detector, filed Apr. 30, 1969, now U.S.
Pat. No. 3,591,184, and assigned to the same assignee as the
instant application.
Located just forwardly of the target 12 may be a penetrable screen,
generally designated 14 of the type known in the art. The screen 14
may receive the projected image of one or more scenes of a hole on
a golf course for purposes of illustrating to the golfer the result
of each shot in conjunction with a conventional computer operated
ball spot projector.
Intermediate the base of the screen 14 and the target 12 may be
located a spin determining area generally designated 16 which again
may be of the type disclosed in the above identified application of
Conklin et al.
Returning now to the tee area 10, the same includes a lie
simulating means, generally designated 18, which may be in the form
of a brush-like mat or the like having an upper surface on which a
ball may be supported and hit towards the target. Additionally, if
the target 12 is of the type disclosed in the above-identified
application of Conklin et al., a tee point 20 will be located just
above the mat 18 with the same being the center of a sphere
encompassing the ball receiving surface of the target as disclosed
in said application of Conklin et al.
Also employed in the game is a computer 20 which may be of the type
disclosed in the copending application of Russell et al., entitled
"Golf Game Computing System," filed Oct. 24, 1966, Ser. No.
588,922, now U.S. Pat. No. 3,513,707, and assigned to the same
assignee as the instant application. As is disclosed in the Russell
et al application, the computer 20 is adapted to receive a first
tee trigger signal on a line 22 and the same begins initiation of a
counter. When the ball has traveled a predetermined distance, a
second signal is provided to the computer 20 on a line 24 by second
sensing means. In the Russell et al application, a photocell
detecting means is utilized as the second sensing means to provide
the second signal on a line 24 but, as disclosed in the above
identified application of Conklin et al., the impact on the target
12 may be utilized for the same purpose and the exemplary
embodiment contemplates the latter arrangement.
Turning now to the means for generating the first signal on the
line 22, the same will be seen to comprise a photocell 26 and
appropriate lens system (not shown) which is adapted to receive
light reflected from the tee area.
More specifically, the photocell 26 is adapted to receive light
reflected by a white golf ball passing through a beam provided by a
light source 28. The light source 28 projects a beam of light which
defines an arcuate line of light as, for example, at 30 extending
across the tee area in a direction generally parallel to the second
sensing system, here the target 12, so that when a ball passes
through the same, the temporary reflection of light from the source
28 will cause a change in the illumination of the photocell 26.
Through conventional means this may be passed along a line 22 to
initiate operation of the computer. The use of a light source that
defines an arcuate beam is generally preferable, particularly when
a target such as the spherical target disclosed, is used. When such
is the case, the center of the arcuate beam may be made
coincidental with the center of the sphere so that there will be
relatively constant distance between all parts of the beam and the
target as measured radially from the center of the sphere.
Of course, the arcuate beam might be employed advantageously in
non-spherical targets having a curved ball receiving surface. It
should further be noted that the nature of the arc may be somewhat
varied to compensate for the curve of such targets or to average
out possible small inaccuracies due to the variable imposed by
permitting the golfer to place the ball at any location on the
mat.
In the exemplary embodiment, the light source 28 is disposed so
that the beam of light 32 projected thereby is generally parallel
to the vertical dimension of the sensing plane of the second
sensing means. When a spherical target is used, the beam 32 should
be generally parallel to the average vertical dimension.
It is also desirable that the beam 32 be focused so that the line
of light 30 will appear just forwardly of the tee point 20. When
such is done and the tee point or any point rearwardly thereof is
used as the spot from which the ball is hit, virtually as soon as
the ball is moved by a club, the same will move into the line of
light to reflect a portion of the same to the photocell 26. Thus,
the ball may be located at any point rearwardly of the line of
light on the mat 18 and when struck, the same will pass through the
line of light to trigger the photocell almost immediately after
impetus has been added to the same by a club head with there being
very little opportunity for the initial velocity of the ball to
decay so that the arrangement provides good accuracy. Furthermore,
virtually the entire length of the mat 18 may be used thereby
evening out the wear on the same.
Another advantage of the system over other photocell tee triggering
systems known in the art which rely on the lack of reflection by a
ball as a trigger, i.e., when the ball is placed on the tee, a
photocell will be illuminated by reflection and when hit, the
reflection will cease thereby providing an indication that the ball
has been hit, is that the reflection by a club head cannot maintain
the photocells in such systems illuminated thereby delaying the tee
trigger signal until the club has completely passed through the
beam of light projected on the ball. Such systems can provide a
large error in that the ball will leave the spot of light
significantly before the club head.
* * * * *