U.S. patent number 3,873,087 [Application Number 05/355,984] was granted by the patent office on 1975-03-25 for occupant propelled rotary amusement device.
This patent grant is currently assigned to General Mills Fun Group Inc.. Invention is credited to Jacob W. Burkart, John F. Mayer.
United States Patent |
3,873,087 |
Burkart , et al. |
March 25, 1975 |
Occupant propelled rotary amusement device
Abstract
A rotary amusement device for supporting a child and enabling
him to propel himself in a circular path about a vertical axis. The
device includes a seat member which is rotatable relative to a
stationary support member, such support member having a grippable
handle affixed to it.
Inventors: |
Burkart; Jacob W. (Cincinnati,
OH), Mayer; John F. (Fort Thomas, KY) |
Assignee: |
General Mills Fun Group Inc.
(Minneapolis, MN)
|
Family
ID: |
23399590 |
Appl.
No.: |
05/355,984 |
Filed: |
April 30, 1973 |
Current U.S.
Class: |
472/19 |
Current CPC
Class: |
A63G
1/12 (20130101) |
Current International
Class: |
A63G
1/00 (20060101); A63G 1/12 (20060101); A63g
001/12 () |
Field of
Search: |
;272/33R,33A,33B,57A,57D,39,43,46,48,51,28S,29,32,35,36,37,47
;104/35,45,46,53,68,75 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
2,116,221 |
|
Nov 1971 |
|
DT |
|
425,573 |
|
May 1967 |
|
CH |
|
Primary Examiner: Pinkham; Richard C.
Assistant Examiner: Kramer; Arnold W.
Attorney, Agent or Firm: Juettner; Anthony A. Lillehaugen; L
MeRoy
Claims
Now, therefore, we claim:
1. A rotatable amusement device adapted to support a child for
rotary movement comprising a substantially circular base member
having an upper and a lower surface, a vertically aligned post
having two ends, means for securing a first end of the post to the
center of the top surface so that it is non-rotatable with respect
to the base member, said first end of the post being tapered so
that its tip has the smallest cross section, said means including
an upwardly projecting tubular member having an upwardly diverging
tapered socket therein, said socket having a plurality of
longitudinally extending grooves formed in the wall of the socket,
an equal number of splines being formed on the first end portion of
the post, said splines adapted to fit in said grooves when said
first end of the post is positioned in said socket, a substantially
circular seat member having an upper and a lower surface and a
circular opening at its center, means for positioning said seat
member over the base member so that the post projects through the
circular opening and said seat member is maintained in spaced apart
relationship with respect to said base member, said means including
a first annular wall which projects upwardly from the top surface
of the base member, said wall being spaced from said post and
having a raceway along its top edge, a second annular wall which
projects downwardly from the bottom surface of the seat member,
said wall being spaced from said post and having a raceway along
its bottom edge, and a plurality of balls, said second wall being
superimposed over the first wall so that said raceways define a
prescribed orbit for the balls between said seat and base members,
means for coupling the seat member to the base member to prevent
substantial vertical displacement of the seat member relative to
the base member by engaging a portion of said base member, and
handle means secured to the other end of the post adapted to be
gripped by the operator so as to effectuate relative movement of
the seat member with respect to the base member when the child is
positioned on said seat member.
2. A rotatable amusement device adapted to support a child for
rotary movement comprising a substantially circular base member
having an upper and a lower surface and an upstanding flange around
its periphery, an upwardly projecting tubular member having an
upwardly diverging tapered socket therein on said top surface at
the center thereof, an upwardly projecting annular wall on said top
surface spaced from the periphery of said base member, said wall
having a raceway along its top edge, a vertically aligned post
having two ends, at least one end having a tapered end portion with
a reduced cross-section which forms a shoulder with respect to the
main body of the post, means for lockably and detachably securing
the post to the base member when said tapered end is inserted into
said tapered socket with said post being non-rotatable relative to
said base member, a substantially circular seat member having an
upper and a lower surface, said seat member having a circular
opening at its center, a downwardly projecting side wall along its
periphery, and a downwardly projecting annular wall on its bottom
surface spaced from the periphery of said seat member, said wall
having a raceway along its bottom edge, the diameter of said seat
member being slightly larger than the diameter of the base member,
means for positioning said seat member over the base member so that
the post and the tubular member project through the circular
opening and the raceways are aligned relative to each other, a
plurality of ball bearings in said raceway and maintained therein
for rotatably supporting said seat member relative to the base
member, means for detachably maintaining said seat member and said
base member in assembled relationship so as to prevent substantial
vertical displacement of the seat member relative to the base
member, said seat member being interposed between said base member
and the shouldered portion of the post, said detachably maintaining
means including a collar securable to the projecting end of the
tubular member, said collar being positioned within a recess formed
by the circular opening in the seat member, circular handle means,
and means for securing said handle means to the other end of the
post so that it is non-rotatable with respect to the base
member.
3. A rotatable amusement device adapted to support a child for
rotary movement comprising a substantially circular base member
having an upper and a lower surface, a vertically aligned post
having two ends, means for securing a first end of the post to the
center of the top surface so that it is non-rotatable with respect
to the base member, a substantially circular seat member having an
upper and a lower surface and a circular opening at its center,
means for positioning said seat member over the base member so that
the post projects through the circular opening and said seat member
is maintained in spaced apart relationship with respect to said
base member, a portion of the top surface of the seat member
surrounding said circular opening sloping upwardly toward the upper
portion of said post, said positioning means including a first
annular wall which projects upwardly from the top surface of the
base member, said wall being spaced from said post and having a
raceway along its top edge, a second annular wall which projects
downwardly from the bottom surface of the seat member, said wall
being spaced from said post and having a raceway along its bottom
edge, and a plurality of balls, said second wall being superimposed
over the first wall so that said raceways define a prescribed orbit
for the balls between said seat and base members, means for
coupling the seat member to the base member to prevent substantial
vertical displacement of the seat member relative to the base
member by engaging a portion of said base member, and handle means
secured to the other end of the post adapted to be gripped by the
operator so as to effectuate relative movement of the seat member
with respect to the base member when the child is positioned on
said seat member.
4. The combination of claim 3 wherein means are provided for
maintaining the balls in the raceways.
5. The combination of claim 3 wherein the means for securing the
post to the base member includes an upwardly projecting tubular
member having an upwardly diverging tapered socket therein, said
tubular member projecting through the opening in the seat member,
the first end of said post being tapered so that its tip has the
smallest cross section, said coupling means including a collar
which is secured to the projecting end of the tubular member so as
to rotatably couple said seat member and said base member
together.
6. The combination of claim 5 wherein a recess is formed in the top
surface of the seat member, and said collar is positioned in said
recess.
Description
The present invention relates to an amusement device for use by
children, and more specifically, to a rotatable toy or device for
supporting a child for rotary movement about a vertical axis.
One object of the present invention is to provide a new and
improved amusement device for use by children.
Another object is to provide an amusement device which will support
a child for rotary movement about a vertical axis.
A further object is to provide a rotatable device upon which a
child can position himself, and thereafter propel himself about a
vertical axis by exerting a pulling or pushing force against a
portion of the device.
A still further object is to provide an amusement device which is
simple and durable in construction, and which is easy to operate or
manipulate.
Other objects and advantages of the invention will become apparent
from a consideration of the following specification and
accompanying drawings. Before proceeding with a detailed
description of the invention, a brief resume of it will be
presented.
In general, the invention includes a circular base member having an
upwardly projecting tubular socket at its center, such base member
being positionable on a support surface. A circular seat member is
positioned over the base member, and it is provided with an opening
at its center. The seat member is supported relative to the base
member so that it is rotatable about a vertical axis. A vertically
aligned post is connected to the base member by inserting one of
its ends in the socket, the other end of such post projects through
the opening in the seat member. A circular handle is fixedly
secured to the projecting end of the post.
The invention will best be understood by reference to the following
drawings, wherein:
FIG. 1 is a perspective view of an amusement device illustrating
one form of the invention;
FIG. 2 is a front elevational view of the device shown in FIG.
1;
FIG. 3 is a top plan view, in partial section, which illustrates
the amusement device;
FIG. 4 is a bottom view of the device, in partial section;
FIG. 5 is an enlarged cross-sectional view taken along line 5--5 of
FIG. 3;
FIG. 6 is a partial cross-sectional view taken along line 6--6 of
FIG. 5; and
FIG. 7 is a partial cross-sectional view taken along line 7--7 of
FIG. 5.
FIGS. 1 and 2 illustrate a rotary amusement device designated
generally by numeral 10. The device includes a circular base member
12, a circular seat member 14 which is rotatable relative to the
base member 12, a vertically aligned post 16, and a circular handle
member 18.
FIGS. 3-7 illustrate the invention in greater detail. As shown, the
base member 12 has a generally circular cross-section with an upper
surface 20, a lower surface 22, and an upstanding flange or lip 24
around its periphery. A tubular member 26 which forms a tapered
socket 28, projects upwardly from the center of the top surface 20,
and a plurality of webs or vanes are provided for supporting the
tubular member 26 relative to the base. As illustrated more fully
in FIG. 6, the wall of socket 28 is provided with a plurality of
grooves 32 which extend along the longitudinal axis of the socket.
A first annular wall or ring 34 projects upwardly from the top
surface 20, and it is spaced a prescribed distance from the lip 24.
As depicted, the wall 34 is provided with a groove or raceway 36
along its top edge 38.
As viewed in FIG. 5, the circular seat member 14 has an upper
surface 40, a lower surface 42, and a downwardly projecting side
wall 44 at its periphery which diverges outwardly by a small
amount. The wall 44 is provided with a lip or bead 46 which
surrounds its edge. As can be seen, the seat member has the general
appearance of an inverted plate or dish, and it has a somewhat
larger diameter than the base member 12, so that the wall 44
overlaps the flange 24. The center portion of the upper surface 40
of the seat member 14 slopes or curves upwardly by a small amount,
and an opening designated generally by numeral 48, is formed
therein. The opening 48 is comprised of a circular recess 50 having
a bottom wall 52, and a circular bore 54 in the wall 52. The upper
part of the recess 50 projects upwardly to form a top edge 56. A
shallow annular recess 58 is formed in the top surface 40 for
positioning a decal or decoration 60 on the seat.
A second annular wall or ring 62 projects downwardly from the
bottom surface 38, and it is spaced from the wall 44 by a
prescribed distance. Ring members 64 and 66 are positioned along
the sides of the wall 62, and as shown in FIG. 5, they project
further away from the surface 42 than the wall 62. A groove or
raceway 68 is formed along the bottom edge 70 of the wall 62.
The seat member 14 is rotatably mounted relative to the base member
12. This is accomplished by positioning the seat member over the
base member so that the tubular member 26 projects through the
opening 54 in the wall 52, and the wall 62 is superimposed over the
annular wall 34. A plurality of ball bearings, such as marbles 72
which are formed of a suitable material, are placed in the raceways
36 and 68, so that they are adjacent to each other. In this regard,
note FIG. 3 as well, which illustrates the bearings 72 in a
prescribed path or orbit around the post 16. The bearings 72 permit
the seat member 14 to rotate about a vertical axis relative to the
base 12. The ring members 64 and 66 extend below the top edge 38 of
the wall 34, and as such, they aid in preventing the bearings 72
from rolling out of the raceways.
The seat and the base are coupled together by means of a collar 74
which is press-fit around the projecting end of the tubular member
26. The collar 74 is positioned within the recess 50, when the
members are coupled together. While the collar can be removed from
the tubular member 26 by prying it off with a suitable implement,
care should be taken so that the bearings 72 do not become
displaced from the raceway 36.
The vertically aligned post 16 is formed of two halves 76 and 78,
although if preferred, it might be formed as a single unit. The
post has a generally circular cross-section, and it includes a main
body portion 80, a first or lower tapered end portion 82, and a
second or upper tapered end portion 84. The end portion 82 has a
reduced cross-section relative to the main body portion 80 so that
a shoulder 86 is formed, and it is tapered so that the tip 88 has
the smallest cross-section. Four longitudinally extending splines
90 are formed on the end portion 82 and they have substantially the
same dimensions as the grooves 32 in the socket 28. It might be
pointed out that since the post is formed in two halves, two of the
splines on each half are only one-half the size of the other
spline.
The second end portion 84 is formed in substantially the same
manner as the end portion 82, except that it is somewhat shorter.
The end portion 84 is slightly tapered so that the tip 92 has the
smallest cross-section, and it forms a shoulder 94 with the main
body portion 80. Four longitudinally extending splines 96 are
integrally formed along the surface of the end portion.
The lower edge 98 of the main body portion 80 flares outwardly so
that it has a diameter which is somewhat larger than the remainder
of the post, as well as slightly larger than the diameter of the
recess 50.
The post 16 is secured to the base member 12 by inserting the
tapered end portion 82 into the socket 28 so that the splines 90
mate with the grooves 32, the tip 88 is proximate the bottom of the
socket, and the lower edge 98 is adjacent to the edge 56. A small
screw 102, positioned in a cavity 104 in the bottom surface 22 of
the base member, threadedly engages the end portion 82, and secures
the post firmly to the base member. It might be pointed out that
while the lower edge 98 of the body portion 80 is proximate the
surface 56, it should not bear against it to such an extent that it
interferes with the rotary movement of the seat, as will be
explained more fully below.
The handle 18 includes a generally circular disk 106 having an
enlarged rim 108 around its periphery, and a hub 110 at its center.
A tapered socket 112 is formed in the hub 110, and it is provided
with longitudinally extending grooves 114 corresponding in number
to the number of splines 96 on the post 16. A channel 116 is formed
in the enlarged ring 108, and a shallow circular recess 118 permits
a decal 120 to be secured to the top of the handle. The handle is
fixedly secured to the post 16 by inserting the tapered end portion
84 into the socket 112 until the end of the hub abuts against the
shoulder 94. A small screw 122, positioned in a cavity 124 in the
center of the handle, threadedly engages the end of the post, thus
effectively securing the handle 16 to the base member 12.
The operation of the amusement device is relatively simple. A child
positions himself on the seat 14, for example by sitting on the
seat with the post 16 between his legs, and grips the handle 18. By
exerting a pulling or a pushing force against the handle 18, the
seat 14 is caused to rotate relative to the handle, post and base
member, and the child is rotated about a vertical axis. Since the
handle 18 is fixedly secured to the base member 12 which supports
the child's weight, it remains stationary relative to the seat.
Moreover, since the seat 14 is effectively separated from the base
member 12 by the ball bearings 72, a minimum amount of force is
required to overcome any frictional forces created. By exerting a
greater amount of effort against the handle, the child can be
caused to spin or rotate at a faster rate.
In the above description and attached drawings, a disclosure of the
principles of this invention is presented together with an
embodiment by which the invention may be carried out.
* * * * *