U.S. patent number 3,806,116 [Application Number 05/284,354] was granted by the patent office on 1974-04-23 for balancing device.
Invention is credited to Donald G. Bornell, John H. Malmberg.
United States Patent |
3,806,116 |
Malmberg , et al. |
April 23, 1974 |
BALANCING DEVICE
Abstract
A balancing device is described comprising a rigid platform with
a plurality of recesses of different configurations formed in its
underside and distributed in spaced relationship. At least one
support member is selectively insertable into any of the recesses
for providing a support for the platform at the region of the
recess into which it is inserted. The upper side of the platform is
adapted for supporting a person balancing the platform on the
support member
Inventors: |
Malmberg; John H. (Del Mar,
CA), Bornell; Donald G. (Leone, Island of Tutuila, American
Samoa) |
Family
ID: |
23089888 |
Appl.
No.: |
05/284,354 |
Filed: |
August 28, 1972 |
Current U.S.
Class: |
482/147 |
Current CPC
Class: |
A63B
22/14 (20130101); A63B 2208/12 (20130101) |
Current International
Class: |
A63B
22/00 (20060101); A63B 22/14 (20060101); A63g
023/00 () |
Field of
Search: |
;272/1R,57A,57J,57D,60
;280/87.4A,205,218 ;108/156 ;248/188.8 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Pinkham; Richard C.
Assistant Examiner: Stouffer; R. T.
Attorney, Agent or Firm: Fitch, Even, Tabin &
Luedeka
Claims
What is claimed is:
1. A balancing device for amusement or athletic purposes
comprising, a flat circular disc having a penetration in the center
therof and having a plurality of pairs of further penetrations
therethrough distributed in spaced relationship, said penetrations
in each of said pairs being equidistant from the center of said
disc on opposite sides of said central penetration, and a plurality
of support members selectively insertable into said penetrations
for providing a support for said disc at the region of said
penetrations into which said support members are inserted and being
unconnected to said disc for ready removal from said penetrations,
said disc having an upper side adapted for supporting a person and
allowing such person to shift their position on said disc for
balancing said disc on said support members, said penetrations with
said support members therein being positioned such that said disc
is tiltable in accordance with the position of the person balancing
said disc.
2. A balancing device according to claim 1 wherein at least some of
said pairs of penetrations are elongated, and wherein at least some
of said support members are spherical.
3. A balancing device for amusement or athletic purposes comprising
a rigid planar platform having a plurality of spaced recesses
formed in its underside, at least some of said recesses being
located on opposite sides of the center of said platform, at least
some of said recesses being of different configuration in the plane
of said underside than others of said recesses, with at least one
of said recesses being of elongated form, a plurality of support
members, each support member being selectively locatable in any one
of said recesses for providing a support for said platform, said
support members being unconnected to said platform for ready
removal from said recesses, the upper surface of said platform
being adaptable for supporting a person and allowing such person to
shift his position on said platform for balancing said platform on
said support members, said recesses and said support members
therein being positioned such that the platform is tiltable in
accordance with the position of the person balancing said
platform.
4. A balancing device in accordance with claim 3 which includes a
circular recess positioned substantially in the center of said
platform.
5. A balancing device in accordance with claim 4 wherein at least
two of said recesses are in the shape of an elongated curve.
6. A balancing device according to claim 3 wherein said recesses
are penetrations formed in said platform.
7. A balancing device in accordance with claim 3 wherein said
support members are spherical.
8. A balancing device in accordance with claim 3 wherein at least
one of said support members comprises a peg having a rounded
end.
9. A balancing device in accordance with claim 3 wherein at least
one of said recesses is straight, and wherein at least one of said
recesses is the shape of an elongated curve.
Description
This invention relates to devices employed for amusement or for
developing physical skills and strength and, more particularly, to
a balancing device.
Many different types of devices are known for amusement or athletic
purposes which require the expenditure of some degree of physical
effort. Such devices include various forms of muscle-toners,
reducing aids, etc. One highly successful form of such devices is
the balancing device or balance board. Basically, such a device
involves the use of a flat board and some type of support which
provides a fulcrum upon which the board is balanced by persons
standing on the board.
Although balancing devices or balancing boards of various types are
known in the prior art, such devices typically have certain
inherent drawbacks. Many prior art devices are relatively expensive
to manufacture. In addition, prior art devices often have been
suitable for only one type of exercise or use, and have not offered
any degree of versatility in the manner of their use.
It is an object of the present invention to provide an improved
device for amusement or physical development.
Another object of the invention is to provide an improved balancing
device.
A further object of the invention is to provide a balancing device
which is low in cost.
It is another object of the invention to provide a balancing device
which is highly versatile in the manner in which it may be
used.
Other objects of the invention will become apparent to those
skilled in the art from the following description, taken in
connection with the accompanying drawings wherein:
FIG. 1 is a perspective view illustrating the use of the balancing
device of the invention;
FIG. 2 is a full section view illustrating, in a combined form,
various manners in which the balancing device of the invention may
be used; and
FIGS. 3, 4 and 5 illustrate different configurations of the
balancing device of the invention.
Very generally, the balancing device of the invention comprises a
rigid platform 11 having an underside 12 with a plurality of
recesses 13, 14 and 15 formed therein. The recesses are distributed
in spaced relationship on the underside of the platform. At least
one support member 17 is provided selectively insertable into the
recesses for providing a support for the platform at the region of
the one of the recesses into which it is inserted. The platform
also has an upper side 19 adapted for supporting a person balancing
the platform on the support member.
Referring now more particularly to the drawings, FIG. 1 illustrates
a person using the balancing device of the invention. As
illustrated, the balancing device comprises a platform 11 which is
a planar or flat circular disc. This particular form is, however,
not necessarily the case, as various other shapes of platforms may
be utilized. The upper side of the platform may be left plain, or
may be provided with a suitable substance such as a thin rubber mat
to aid the persons using the device in gripping the platform with
their feet.
FIG. 2 illustrates in cross section several forms of recesses and
support members. The figure is a composite of several combinations
of recesses and support members, and is not intended as a
representation of the entire device in actual use. It may be seen
that the various recesses 13 and 14 are formed in the platform by
means of providing an opening or penetration passing completely
through the platform. For reasons which will be subsequently
explained, these recesses or penetrations may be circular as in the
case of the hole 13, or may be elongated slots as in the case of
the recesses 14. The recesses 14, as may be seen in the latter
figures, are straight elongated slots, however, the slots 15 (FIGS.
3-5) described subsequently, are curved. The edges or corners of
the recesses 13, 14 and 15 may be bevelled or rounded if desired,
thus minimizing damage to the support members, described below.
The support members 17 are solid spheres comprised of wood,
plastic, or other suitable material. The spheres are of a diameter
to partially extend into the elongated slots 14 or the circular
openings 13. When weight is placed on the upper side of the
platform and the support members are placed on a hard surface
indicated at 21 in FIG. 2, the platform may be balanced on a
support member. The support member 17 may be moved in the elongated
recesses or slots 14 as shown in the phantom positions in FIG. 2.
This means that the platform may be moved on a spherical support
member, with the spherical support member rolling along the slot to
accommodate translational motion. Of course, in the event the
spherical support member 17 is inserted into a circular recess 13,
only pivotal motion of the platform with respect to the hard
surface 21 is possible, with the member 17 rolling on the surface
21 as the platform tilts.
An alternative form of support member is also illustrated in FIG. 2
as the support member 23. The support member 23 comprises a peg
having a smaller diameter upper portion 25 for insertion into a
circular recess or hole 13, and having a rounded lower portion 27
to provide the balancing contact with the hard surface 21. In the
case of using the support member or peg 23, the recess or hole 13
may, as shown, be not bevelled at its lower edge, or a bevelled
recess or hole may be used. The pegs may be force fit in the
recesses, or may be provided with a suitable lock, not shown, such
as threads, a detent or a nut. If the pegs are made to project
above the platform, they may be held in place with the side of
one's foot as the device is used. Thus, the platform and the
support member 23, may be raised as a unit off the supporting
surface 21.
Typical use of the balancing device of the invention may be made by
placing a support member or sphere 17 on the floor in a circular
recess 13 positioned in the center of the platform 11. One or more
persons may then stand on the platform and attempt to balance the
platform so that the edge of the platform does not touch the floor.
The persons may attempt to rotate the platform about a vertical
axis at the same time.
A slightly easier activity may be accomplished by placing two
spherical support members 17 in circular recesses 13 spaced on
opposite sides of the center of the platform. In the event that the
spherical support members are placed in elongated recesses 14 or
curved recesses 15, various combinations of balancing activities
may be achieved. This is because the support members are able to
roll along the elongated or curved recesses in response to
translational motion of the platform.
Similar balancing activities may be performed by the utilization of
the peg type support members 23. However, because the peg type
support members come out of the recesses into which they are
inserted less easily, less balancing skill is required. Thus, such
support members are especially suitable for very young
children.
If the peg type support members 23 are placed in holes or circular
recesses disposed on a diameter and spaced equidistant from each
other on opposite sides of the center of the platform, and if feet
are placed on the same diameter outside the pegs, the platform may
be balanced and simultaneously walked. This may be accomplished by
the person using the device shifting his weight from side to side.
If two or more balancing devices are used, races may be held.
Preferably, the platform is circular. A 24 inch diameter is quite
satisfactory. A smaller diameter may be suitable for young children
and a larger diameter may be suitable for more than one person at a
time utilizing the balancing device. The materials used for the
platform and support members may be of any suitable type, but
preferably are durable and attractive.
The platform, as previously mentioned, may be any convenient cross
section, but is preferably planar or flat. The thickness is
determined by the various strength and rigidity requirements, and
by the most aesthetic appearance of the device. For a 21 inch
diameter disc, 3/4 to 1 inch thicknesses are suitable, if plywood
is used. Greater or lesser thicknesses may be suitable for other
types of materials, and for various diameters and patterns of
recesses.
Various patterns of recesses may be utilized, depending upon the
desired balancing activities. Thus, any combination of slots,
holes, or curved slots may be used arranged in any desired pattern.
In this manner, various types of motion or balancing patterns may
be achieved. By using a single circular recess in the center of the
platform, balancing may be achieved with two degrees of freedom. By
placing two circular recesses equally spaced from the center along
a diameter, balancing may be accomplished with one degree of
freedom, as in a "teeter-totter." A pair of linear recesses spaced
equidistant from the center and parallel with each other may be
used to provide one balance degree of freedom and one translational
degree of freedom (that is, the platform may be both rocked and
moved relative to the surface upon which it is being balanced). In
such case, the balance axis is perpendicular to the translational
degree of freedom. By using a pair of linear recesses aligned with
each other, a single balanced degree of freedom is achieved with an
additional translational degree of freedom which extends along the
balance axis. By using curved recesses in pairs or threes at a
radius from the center, a twisting motion plus balancing is
achievable.
Referring now to FIG. 3, a particular pattern in the arrangement of
recesses in the platform 11 may be seen. In this pattern, a
circular recess 13 is positioned in the center of the platform,
which is in the form of a circular disc. Circular recesses 13 are
placed on opposite sides of the center spaced equidistant
therefrom. A pair of elongated linear recesses 14 are placed on
opposite sides of the center of the platform spaced equidistant
therefrom and in parallel relationship. A pair of elongated
recesses 14 are also placed on opposite sides of the center of the
platform placed equidistant therefrom and arranged in alignment
with each other. Finally, two pairs of curved recesses 15 are
arranged so that the recesses lie in quadrants of the disc, the
curved recess in each pair being spaced equidistant from the center
of the disc and being curved on a radius having a center at the
center of the disc. Two spherical support members 17 are shown in
use in a pair of the curved recesses 15.
Another pattern of distribution for the recesses is illustrated in
FIG. 4. In this pattern, a circular recess 13 is placed at the
center of the platform, and two additional pairs of circular
recesses are placed in alignment along a diameter of the platform.
Another pair of circular recesses 13 are arranged on a diameter
normal to the diameter of the five aligned circular recesses spaced
equidistant from the center of the platform. A pair of linear
recesses 14 are provided spaced equidistant from the center of the
platform and arranged parallel with each other. Finally, curved
recesses 15 are provided in the various quadrants of the platform
as was the case in the pattern illustrated in FIG. 3.
Another pattern is illustrated in FIG. 5 wherein, once again, a
circular recess 13 is provided in the center of the platform. A
pair of circular recesses 13 is provided with each recess being on
opposite sides of the center of the platform spaced equidistant
therefrom. In two opposite quadrants of the circular platform,
linear recesses 14 are provided spaced equidistant from the center
of the platform and parallel with each other. In the other two
quadrants of the circular platform, two pairs of curved recesses 15
are provided. The curved recesses in each pair are spaced
equidistant from the center of the platform and are curved on a
radius having its center at the center of the platform.
Other patterns and recesses may be provided in the underside of the
platform to enable the spherical support or supports to follow
various patterns. In the event a thin platform is used wherein the
recesses penetrate through the platform, non-penetrating recesses
in the form of grooves may be used connecting the penetrating
recesses so that the balls or spherical support members may be
maneuvered from one penetrating recess to another.
It may therefore be seen that the invention provides an improved
balancing device which affords a very large number of different
activities of a great range of difficulty. The device is very
simple and of low cost construction, and yet is durable. The wide
variety of activities in which the device may be employed enables
use of the device to achieve body awareness, body control, muscle
toning, and various psychological benefits. In developing physical
fitness, leg, ankle and foot strength are improved, as well as
cardiorespiratory endurance, agility, balance, coordination and
suppleness. The balancing device is capable of being balanced in
various degrees of freedom, spinning in various directions, may be
walked forward or backward, may be rocked, may be balanced by more
than one person, may be twisted, and may be used as a competition
device in races.
Various modifications of the invention in addition to those shown
and described herein will become apparent to those skilled in the
art from the foregoing description and accompanying drawings. Such
modifications are intended to fall within the scope of the appended
claims.
* * * * *