U.S. patent number 3,869,127 [Application Number 05/418,566] was granted by the patent office on 1975-03-04 for golf-shot practicing apparatus.
Invention is credited to Kiyotaka Kohori.
United States Patent |
3,869,127 |
Kohori |
March 4, 1975 |
Golf-shot practicing apparatus
Abstract
A golf shot practice apparatus with a flat base, a flat support
board disposed over said base having a simulated turf towards one
end thereof and a step mat towards the other end thereof.
Interposed between the base and support board is a universal
mechanism including a support cylinder extending upward from the
base, a curved plate shaped like the lower portion of a sphere
disposed between said support cylinder and the support board under
the step mat. The curved plate engages the support board under the
step mat. Engaging the inside of said curved plate is a disc
affixed to an axial rod. Coupled to the rod are control elements to
lift the rod and disc to alter the altitude in space of the curved
plate so as to incline the support board at any angle desired with
flixing elements including fixing inner and outer cylinders
engaging the fixing rod and lowering the rod so the disc engages
the curved plate in a desired position. Coupled to the fixing
elements is a handle and alarm elements operatively responsive to
the position of the handle to provide an alarm when the support
board is not fixed.
Inventors: |
Kohori; Kiyotaka (Suita,
JA) |
Family
ID: |
23658665 |
Appl.
No.: |
05/418,566 |
Filed: |
November 23, 1973 |
Current U.S.
Class: |
473/279 |
Current CPC
Class: |
A63B
69/3652 (20130101) |
Current International
Class: |
A63B
69/36 (20060101); A63b 069/36 () |
Field of
Search: |
;273/176,195,201,196,197,198,201,183 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Marlo; George J.
Attorney, Agent or Firm: Oujevolk; George B.
Claims
I claim:
1. A golf shot practicing apparatus comprising:
a. a base;
b. a support board above said base for a person to have golf ball
hitting practice having thereon a part on which a ball will be
placed and a part allowing the player to take a stance toward the
ball;
c. universal means by which the practice board above said base will
be freely supported in any inclination in any direction and at any
angle, said universal means including a support cylinder which is
fixed to said base and a spherical plate which has a shape of the
lower part of a hollow sphere and which is disposed upon the said
support cylinder, while the peripheral rim thereof is fixed to the
lower side of the said support board; and,
d. fixing means for said support board to fix the position thereof
in a horizontal or inclined state inside the said spherical plate
including a disc that presses the spherical plate to the upper side
of the said supporting cylinder and a controlling device having a
fixing cylinder that has a threaded inner periphery, a rotary
elevating part that grapples with said fixing cylinder, a handle to
rotate it and a tightening rod which passes through said spherical
plate that connects said elevating part and the disc for pressing
the spherical plate to said fixing cylinder.
2. An apparatus according to claim 1 with a rubber sheet spread
over the upper surface of the said support board.
3. An apparatus according to claim 1 to which is attached a golf
ball container to hold balls within it on the said support
board.
4. An apparatus according to claim 1 in which a synthetic
quasi-turf mat is spread over part of the said board where a ball
will be placed.
5. An apparatus according to claim 4 in which synthetic quasi-turf
mat has a dent made by cutting into standing synthetic grass, so
that at least one ball may be held in it.
6. An apparatus according to claim 1 in which an instrument to
support a ball is disposed on said board.
7. An apparatus according to claim 1 which includes alarm means
that gives an alarm whenever the fixing force of the said
practicing support board is not applied.
8. The apparatus according to claim 7 in which said alarm
instrument gives out an alarm whenever said rotary elevating part
rotates to a definite rotating position.
9. A golf shot practice apparatus comprising in combination:
a. a flat base (1)
b. a flat support board (2) disposed over said base having a
simulated turf (28) towards one end thereof and a step mat (37)
towards the other end thereof;
c. a universal mechanism (3) interposed between said base (1) and
said support board (2) including a support cylinder (46) extending
upward from said base (1), a curved plate (47) shaped like the
lower portion of a sphere disposed between said cylinder (46) and
said support board (2) under said step mat, said curved plate
engaging said support board substantially under said step mat, a
disc (50) for engaging the inside of said curved plate affixed to
an axial rod (58) control means coupled to said rod (58) to lift
said rod and disc to alter the altitude in space of said curved
plate to incline said support board at any angle desired with
fixing means including a fixing inner and outer cylinders (53, 55)
engaging said fixing rod and lowering said rod so said disc engages
said curved plate in a desired position, a handle (57) coupled to
said fixing means and alarm means (83) operatively responsive to
the position of said handle to provide an alarm when said support
board is not fixed.
10. An apparatus according to claim 9 wherein one of said fixing
cylinders (53, 55) is fixed to said support cylinder (46) and the
other is a telescoping elevating cylinder said two cylinders being
threadly engaged so that one of said cylinders can be rotatably
raised or lowered with respect to said base, said handle (56)
engaging said rotatable cylinder to rotatably raise said cylinder,
said rod (58) being connected to said cylinders so that the raising
of said rod also raises said disc which permits substantially
universal movement of said curved plate.
11. An apparatus as claimed in claim 10 wherein said alarm means is
disposed adajcent said fixing rotating cylinder with switch means
thereon and switch engaging means on said fixing rotation cylinder
so disposed as to turn on said alarm when said support board is not
in a fixed position.
Description
BACKGROUND OF THE INVENTION
The present invention relates to a golf-shot practicing apparatus,
particularly a golf-shot practicing apparatus that can be most
aptly utilized particularly in places other than a golf course,
such as a home garden where the player can freely enjoy ball
hitting practice in any direction with a ball placed on a board
which can be held horizontally or any inclined position and
direction.
BRIEF DESCRIPTION OF THE PRIOR ART
Hitherto, various kinds of instruments for golf ball hitting
practice have been put on the market. Without exception, however,
all these instruments utilized a horizontal board is some form or
another, upon which a golf ball or a quasi-ball will be placed
horizontally.
In contrast, however, the actual golf courses have various slopes,
hills, valleys in order to make the player more interested in the
game. Besides, the actual golf course, the location of balls hit do
not necessarily take a horizontal position. On a fairway, for
instance, the ball may lie on an inclined plane as often as not. In
addition, such planes usually take various positions going upwards
or downwards. Also, the planes are often inclined forward or
backward. As commonly known, a special knowledge, different from
what is used when hitting balls lying on a plain, must be used in
such cases.
But as far as the hitting practice is concerned, none of such
conventional apparatuses is satisfactory when the balls are lying
on variously inclined planes.
OBJECTS OF THE INVENTION
The object of the present invention is to provide an apparatus
which can be effectively used in the hitting practices of golf
balls which lie uphill, downhill or on a sidehill, or which lay
flat by simulating various kinds of ball positions in such
specified small places as common home gardens and the like.
The other objects of the invention are to provide a practicing
apparatus that can be used by simple operations to alter the
conditions of the ball position or the foot positions of
players.
In order to attain these objects, the apparatus according to the
present invention comprises a support board which is provided in
such a position as to allow the player to have a required space
between the base and the place upon which a player can ride in
order to have hitting practice and which has a part where a ball
can be put and another part where the player can take a stance
toward the ball. Also, it comprises means to support the board
above the base in all directions and at any angles of inclination
in addition to means fixing said board in the horizontal or
inclined positions. Besides, the fixing means of the practicing
support board has a mechanism for binding screws which can be
manually operated.
Other objects and advantages of the present invention will be
clearly apparent from the following explanation and the description
of the accompanying drawings, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates an oblique view of the apparatus herein
contemplated as seen in its forwardly inclined position;
FIG. 2 is an enlarged longitudinally cut section in the central
part of said apparatus. A part of the length is omitted;
FIG. 3 is a section cut along the line III -- III of FIG. 2;
FIG. 4 is a view showing a partly notched practicing support
board;
FIG. 5 is a view of the base where one-half of the upper iron plate
is removed;
FIG. 6 is an oblique view of an artificial quasi-turf mat; and,
FIG. 7 is a sectional view cut along the line VII -- VII of FIG.
6.
DETAILED DESCRIPTION
The apparatus shown in FIG. 1 illustrates a preferred embodiment of
this invention and comprises a support board 2 for golf ball
hitting practice and equipment 3 allowing the board 2 to incline on
the base 1. The support board 2 for practice is of rectangular
shape, and has an area broad enough to allow the player to put a
golf ball B on its one end part and to take a stance towards the
ball B.
The base 1, which is to be fixed on the surface of land, mainly
consist of circumferential pipes 11, which are bent rectangularly
as illustrated in FIG. 5, and two pipes 12 and 13 arranged
crosswise in parallel, while the upper iron plates 14, 15 and 16
are welded together with these pipes 11. The iron plate 14 which is
in the central part of the base 1 is made thicker than other plates
15 and 16, so as to be strong enough to bear a greater load put on
it, while a drainage hole is arranged in the central part. The iron
plate 15 on both end parts of the base 1 is so shaped as to have an
upper coarse surface so that it may also act as a stepping plate
for the player to go up the support board 2. One of the seating
pieces 18 arranged on the four corner parts of the pipe 11 is
somemtimes made elastic in order to stably fix the base 1 even when
the surface of land is not flat.
As shown in FIG. 4, the golf practicing support board 2 comprises
the circumferential pipe 21 bent rectangularly and two pipes 23 and
24 arranged crosswise in parallel, and above these pipes 21, 22 and
23 is stretched a rectangular thin sheet of iron 24, and further
above it is put in piles the same sized sheet of natural rubber and
they are all bound. The periphery of the above-mentioned iron sheet
24 is welded together with the pipe 21 and fixed, while the rubber
sheet 24 is kept tightly in its circumferential four sides with
corners 27 that is fixed to the pipes 21. Here the rubber sheet 25
effectively works as a preventive for the under-mentioned matters
or persons not to slip off.
On a part of one end of the practicing support board 2, where the
ball B will be placed, is spread an artificial quasi-turf mat 28
which, consist of a base portion 29 and a thick standing grass
layer made of synthetic resinous fibres such as conventionally
known artificial grass and is used to cover the upper surface, in
which several round hollow ports 31 are made so that when the mat
28 is inclined, the ball B will not roll off if it is placed in one
of these hollow ports 31. This arrangement is made because of the
inclination of the practicing support board 2 and the hollow part
31 is actually formed by cutting partly into the thickly standing
grass layer 30 of the mat 28 in a reverse cone or a cylindrical
shape as shown in FIG. 7. In the part where the ball B will be
placed, the necessary tool 32 to support the ball after it has been
teed-up is provided as shown in FIG. 1 and FIG. 2. The form of this
tool 32 is well known. It is made of rubber and has a cylindric
ball support part 32a at one end and a fixture 32b at the other
end. This fixture is loosely put over a pin 34 protruding upward
from the bracket 33 which is fixed to the aforesaid pipe 21.
Consequently said tool 32 can be rotated around the pin 34 and
sometimes it can be dispensed with and removed from the practicing
support board 2. In order to make its removal possible, only one
end of a reversal U-type frame 35, which is used to hold the tool
32 on the support board 2 is fixed to the bracket 33 while the
other end is forming an interval between it and the bracket in
order to allow the tool 32 to pass through.
A step mat 37 for the player is spread over the part on which he is
going to take a stance toward the ball B put on the practicing
support board 2. This mat 37 has a conventional structure, in which
many cylindrical and rubberized pieces of material 37a are thickly
arranged and are tied together with steel wires.
Between the part where the ball B is placed and the part where the
player takes a stance as above-mentioned is provided a container 38
for a lot of golf balls. This container 38 is inserted into a hole
39 made in the practicing support board 2. It is supported by an
upper end flange 38a. In order to perfect this support, two narrow
support pipes 40 are arranged between the two pipes 22 and 22 below
the flange 38a. Any rain water that happened to enter into the
container 38 will be drained out through slit 41 made between the
lower side of the side wall of the container 38 and its bottom
wall. When practicing with the aid of this apparatus, the player
will take the balls B out of the container 38 one by one and place
them on the mat 28 or the part 32a of the tool 32, and then he will
hit each ball. Accordingly, he will have no difficulty to come down
from the support board 2 to get the practicing ball B every
time.
The apparatus 3 to support the practicing board 2 further comprises
a cylinder 46 fixed to an iron plate 14 of the base 1 around the
hole 17 with several bolts 45 and the metallic plate 47 has a
spherical surface, which is shaped like the lower part of a hollow
ball put on the cylinder 46. The upper end surface 46a of said
cylinder 46 is shaped to have a circular arc surface along the
outside of said sperical surface plate 47, which has a flange 47a
on its upper end. This flange 47a is fixed to the iron plate 49 of
the lower surface of the practicing support board 2 with several
bolts 48. Consequently both the cylinder 46 and the spherical
surface plate 47 substantially constitute a universal supporting
mechanism which allows the player to freely alter both the
inclination directions and angles by simply changing the relative
contacting positions. The iron plate 49 is located on the half of
the side opposite the side where there is the part of the
practicing support board 2 to place the ball B together with the
pipes 21 and 23. As a result, the supporting point of the
practicing board 2 by the supporting apparatus leans toward the
direction of one end from the center. This is in order to improve
the stabilization of the practicing board 2 at a position as near
as possible to the place where the player takes a stance toward the
ball B. However, the balance of the board 2 will be lost when the
supporting point is biased from the center of the board 2. In order
to cope with this problem, a lump of iron is put on one end of the
iron plate 49 as a counter-weight 42 so that the supporting point
and the center of gravity substantially coincide.
In order to fix the practicing board 2 in a horizontal or any
inclined positions, there is a cast disc 50 that is inside the
spherical surface plate 47 and holds it down to the upper end
surface of the cylinder 46. The peripheral surface 50a of said disc
50 is made to have a circular arc along the inside of the spherical
surface plate 47, and through the said spherical surface plate 47
it faces the upper end surface of the cylinder 46. The slit to
exhaust the rain water that is on the disc 50, so as to prevent the
various parts from their being corroded, is formed with several
vertical ditches 52 provided on the peripheral brim of the disc 50
leaving some suitable space between them. The apparatus to control
the pressing force against the spherical surface plate 47 of the
disc 50 comprises a fixing cylinder 53 which is located inside the
support cylinder 46 and which has the threads 54 on its interior
circumferential surface, a rotary telescoping elevating cylinder 55
whose outer circumferential surface is threaded 56 and which is
screwed to the fixing cylinder 53, an operating handle 57 to rotate
it, a tightening rod 58 which connects the center of the pressing
disc 50 and the center of the rotary elevating part 55. The fixing
cylinder 53 is united with the said support cylinder 46 by means of
several arms 60 which extend radially from the periphery of the
fixing cylinder 53. The rotary elevating part 55 is a cylindrical
casting having a top wall. In the upper end peripheral surface it
has a projection 55a which has a poligonal section and into which
is put the head of handle 57 composed of a pipe that has a
poligonal section. The handle 57 extends outward through a very
wide aperture 71 in the peripheral wall of the cylinder 46. The
tightening rod 58 passes through the central hole 72 of the top
wall of the rotary elevating part 55, the lower end hole 73 of the
spherical surface plate 47 and the central hole 74 of the disc 50
in succession, and between the flange-shaped head part 58a in its
lower end and the lower surface of the top wall of the rotary
elevating part 55, is placed the thrust bearing 75, while through
the intermediary of a washer 76 on the disc 50, the two nuts 77 are
put on the screw part 58b arranged on the upper end. The bearing 75
serves to transmit the rotation of the rotary elevating part 55 of
the bearing 75 to rod 58 while nut 77 is useful for regulating the
effective length of the rod 58. The hole 73 in the spherical
surface plate 47 is made large enough so that even when the
practicing board 2 is inclined to its maximum, the spherical
surface plate 47 will not touch the rod 58. When the part 79 of the
practicing board 2 and the rubber sheet 25 with their
circumferences separately cut are removed, a rectangular hole 81
will be formed and through that hole 81 and there is also another
hole 78 made in the iron plate 49 of the lower side directly under
said hole 81, the regulating operation of said nut 77 and the
maintenance of the interior of the supporting apparatus 3 as well
as maintenance can be carried out as well. The part 79 to make the
hole 81 is supported at the four corners on the lower side by the
four supporting pieces 80 that are fixed to the lower side of the
iron plate 24 as illustrated in FIG. 2 and FIG. 4, and it is
maintained on the same side as other parts.
Elevating part 55 is lifted against the fixing cylinder 53 by
turning the handle around counter-clockwise and through this
operation the tension of the rod 58 will be removed and the
pressing force of the disc 50 against the spherical surface plate
47 will be weakened. Consequently in this condition, the practicing
board 2 can be inclined in any direction and at any angle, so that
when the handle 57 is turned around clockwise, after the desirable
inclination direction and angle are fixed, the practicing board 2
will be fixed in position.
It will be very dangerous, however, if the fixing force board 2 by
means of fixing apparatus is completely removed or weakened, when a
player steps upon board 2 to have ball hitting practice or for some
other purposes. For the purpose of preventing such a danger, an
alarm bell 82 is provided to cope with said peril. This alarm bell
82 has a battery inside and is arranged on the peripheral surface
of the cylinder 46. The pressing button 83 of its switch projects
into the inside of the cylinder 46. This switch is operated by
operating piece 84 which extends outward from the upper side of the
rotary elevating pipe 55 through the intermediary of a plate spring
85. When the rotary elevating cylinder 55 is in its tightened
position, the operating piece 84 always pushes outward against the
elasticity of the spring 85 to make the push button 83 of the
switch retreat so as to keep the switch OFF. But whenever the
rotary elevating part 56 is turned around counter-clockwise to
loosen the fixing of board 2, the operating piece 84 will come off
the spring 85 and the switch will be ON to make the alarm bell 82
start to give an alarm. By this alarm of the alarm bell 82,
everybody realizes that it is dangerous to be on the practicing
board 2, so that safety will be assured at all times.
As described above, the said board 2 according to the present
invention allows the practice of golf shots on variously inclined
surfaces of the board 2 by making it inclined, which such a change
of the direction of the inclined surface or its angle can be made
by a simple and easy operation.
The present invention may be embodied and utilized in various other
forms without departing from the spirit and all its basic
characteristics, and all the embodying examples mentioned above
should be considered nothing but the exemplary ones in all respects
and are not definitely restrictive. The extent of this invention is
as shown by the claims and from the specification and therefore the
meaning of the claims and all the altered forms within the extent
equal to the claims should be considered as included in the
claims.
* * * * *