SLIDE PLAY APPARATUS AND BLADE
To provide a slide play apparatus for sliding not only on the surface of snow but also on the surfaces of lawn and sand. The apparatus is constructed such that an impact from a sliding surface to a player can be cushioned and that sliding fun different from those obtained from conventional slide play apparatuses can be provided to the player. [Means for Solving the Problems] In the slide play apparatus 1, a body part 2 has a substantially cylindrical shape, and a slide board 7 and an upper board 6 positioned over the slide board 7 are connected to each other by a nose plate 8 and a tail plate 9. Therefore, the nose plate 8 and the tail plate 9 function as cushions to cushion an impact applied to the feet of the player P. Since the impact applied to the feet of the player P is cushioned, the player can have sliding fun and feeling different from those of the conventional apparatuses.
The present invention relates to a slide play apparatus for sliding on a surface of snow, lawn, or the like.
BACKGROUND OF THE INVENTIONSlide play apparatuses for sliding on a slope with a player's own weight have been known such as a snowboard for sliding on a snow surface. A snowboard which has been used according to previously existing technology is manufactured from a single board formed of a substantially oval as viewed from above. A lower surface of the board is used as a sliding surface, and an upper surface, as a boarding surface on which a player rides. The player can make a turn to right or left by transmitting his/her weight shift onto the board (see Japanese Published Patent Application Publication No. 2004-160095).
DISCLOSURE OF THE INVENTION Problems to be Solved by the InventionMost snowboards are, however, manufactured from a single board and are formed of a substantially oval as viewed from above. Thus, sliding fun and feeling that a player on such snowboards receives from a snow surface is not so much different from one another. Further, it is only a single board that is interposed between the snow surface and the feet of a player, so that an impact which the player receives from the snow surface is extremely large.
The present invention is made in an attempt to solve the problems and to provide: a slide play apparatus for sliding on a slope not only a surface of snow but also a surface of lawn, sand, or the like, which can reduce a physical load subjected to the player and obtain sliding fun different from that obtained from the apparatuses according to previously existing technology; and a blade suited to cushioning the impact.
Means for Solving the ProblemsThere is provided a slide play apparatus which includes: a slide board having a first edge at an outer end and sliding on a slope; an upper board positioned above the slide board; a nose board connecting one end of the slide board to one end of the upper board; and a tail board connecting the other end of the slide board to the other end of the upper board, and which is formed of a substantial cylinder.
With the invention described above, the slide play apparatus is formed of a substantial cylinder, and the slide board and the upper board positioned above the slide board are connected with the nose board and the tail board. Therefore, the nose board and the tail board function as cushions to cushion an impact applied to the feet of a player. Since the impact applied to the feet of the player is cushioned, the player can have sliding fun and feeling different from that obtained from the apparatuses according to previously existing technology.
In the present invention, the outer end may have a first side curve.
With the invention described above, the outer end has a first side curve. Therefore, a first edge disposed at the outer end and having a curve catches the sliding surface, which enables a turn to be made smoothly.
In the present invention, a blade includes; a protruding portion protruding more outward than the outer end of the slide board; a second side curve formed on the outer end of the protruding portion and having a curvature larger than that of the first side curve; and a second edge disposed on the outer end of the protruding portion, and the blade may come in contact with the upper surface of the slide board.
With the invention described above, the blade has the protruding portion having the second edge positioned more outward than the first edge disposed on the outer end of the slide board, and the blade comes in contact with the upper surface of the slide board. Therefore, the slide board and the blade tilt when the player shifts his/her weight, which allows the second edge disposed on the protruding portion to catch the sliding surface. The second side curve having the curvature larger than that of the first side curve of the slide board is disposed on the outer end of the protruding portion, which allows a turn to be made sharply. The player can make various types of turns because the player can use the first edge or the second edge as he/she likes by adjusting the weight shift.
The blade in the present invention means a board interposed between the slide board and the upper board, functioning as a cushion for absorbing an impact, and guiding a turn by contacting with the sliding surface.
In the present invention, two blades are disposed crossly with respect the longitudinal axis X of the slide board to have a substantially X shape as viewed from above. Each blade may have a contact portion coming in contact with the upper surface of the slide board, curved portions disposed on a nose board side and on a tail board side, and a fixing portion fixed to the lower surface of the upper board.
Herein, description of the present invention is made assuming that a left foot of a player is positioned frontward in a sliding direction.
With the invention described above, the two blades each having the curved portions disposed on the nose board side and on the tail board side are disposed crossly with respect the longitudinal axis X of the slide board to have a substantially X shape as viewed from above. That is, one blade is disposed at a part covering from a left foot tiptoe through a right foot heel. The other blade is disposed a part covering from a left foot heel through a right foot tiptoe. Therefore, if the player shifts the weight to a left foot tiptoe side, a distance between the fixing portion and the contact portion on the left foot tiptoe side is compressed, and, at the same time, because of reaction force, a distance between the fixing portion and the contact portion on a right foot heel side is extended. This facilitates a smooth weight shift of the player due to elasticity of the blade.
Further, the curved portion of the blade functions as a cushion, which cushions an impact applied to the feet of the player.
In the present invention, a support member for reducing friction between the slide board and the blade and between the two blades may be disposed at respective portions at which the slide board and the blade, and the two blades are crossed.
With the invention described above, friction caused when the slide board and the blade, and the two blades each come in contact with each other can be reduced. This enables a smooth slide of the blade.
In the present invention, an elastic body may be interposed between the slide board and the upper board.
With the invention described above, the interposition of the elastic body between the slide board and the upper board enhances a cushioning property therebetween, which allows a flexible response to a vertical load subjected to the upper board and the slide board.
In the present invention, a width of the sliding surface is smaller than that of the boarding surface.
With the invention described above, the frictional resistance of the sliding surface is reduced, and a sliding speed is increased. Additionally, a possible range of the weight shift is narrowed, thus enabling a turn to be made easily.
In the present invention, the upper board may have a recessed portion which is depressed toward the slide board.
With the invention described above, a height of the foot of the player can be lowered, thus enabling the player to get on and off the slide play apparatus without difficulty. Further, a distance between the foot of the player and the slide board is reduced. This makes it possible to easily transmit the weight shift of the player onto the slide board, thus enabling a further smooth slide.
In the present invention, the two blades are disposed crossly with respect the longitudinal axis X of the slide board between the slide board and the upper board disposed thereabove to have a substantially X shape as viewed from above. Each blade has the contact portion coming in contact with the upper surface of the slide board, the curved portions disposed on both ends of the contact portion, and the fixing portion fixing both ends of the blade to the lower surface of the upper board. Each blade further has a protruding portion protruding more outward than the outer end of the slide board.
With the invention described above, the blade with the curved portions provided therein is interposed between the slide board and the upper board. Therefore, an impact applied to the slide board and the upper board can be reduced.
In the present invention, the slide play apparatus can cushion the impact applied to the feet of the player and can give the player sliding fun and feeling different from that obtained from the slide play apparatuses according to previously existing technology.
Embodiments of the present invention are described in detail hereinafter with reference to related drawings. In the description, the same reference numerals are assigned to the same components, and the overlapped description thereof is omitted herefrom. Arrows in
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An upper surface of the upper board 6 includes boarding portions 11 on which the player P rides. The blade 3 to be described later is fixed to a lower surface of the upper board 6. A foot fixing instruments T (see
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In the first embodiment, the slide board 7 is formed flat, however, is not limited to this configuration. The slide board 7 may have a raised central part as a camber (not shown).
In the first embodiment, the body part 2 is formed substantially symmetrical with respect to the longitudinal axis X, the across-the-width axis Y, and the vertical axis Z. This is advantageous in that the body part 2 is equally used even when either a right foot or a left foot is put forward. In the first embodiment, the body part 2 is formed as described above, however, is not limited to this configuration. The body part 2 may be formed asymmetrical.
In the first embodiment, the nose board 8 and the tail board 9 are formed as described above, however, are not limited to this configuration. The nose board 8 and the tail board 9 may be formed vertically to the slide board 7. The nose board 8 and the tail board 9 may be formed streamlined.
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Description hereinafter assumes that a left foot of the player P is put on a left side on the upper board 6.
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The left foot front fixation portion 31, right foot rear fixation portion 34, left foot rear fixation portion 37, and right foot front fixation portion 40 may each be simply referred to as a fixation portion. The left foot front contact portion 32, right foot rear contact portion 35, left foot rear contact portion 38, and right foot front contact portion 41 may each be simply referred to as a contact portion. The left foot front curved portion 33, right foot rear curved portion 36, left foot rear curved portion 39, and right foot front curved portion 42 may each be simply referred to as a curved portion.
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The blade 3 is not limited to have a configuration as described in the first embodiment. The lapping portion L may not be provided, for example. The blade 3 may have a torsion angle at the contact portions 32, 35, 38 and 41 (not shown).
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In the first embodiment, an elastic body interposed between the upper board 6 and the slide board 7 is the spring 4, however, is not limited to this configuration. A well-known elastic body such as rubber (not shown) may be used. A size, a type, or the like of the elastic body may be selected according to a size and a material of the body part 2, a weight and a playing style of the player P, or the like. In the first embodiment, one unit of the spring 4 is used, however, a plurality of springs may be used. A position of the spring 4 is not specifically limited.
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The blade 3 slides according to a weight shift of the player P as described later. Therefore, the blade 3 slides smoothly by interposing the support members 5 at a part where the upper blade 3a and the lower blade 3b intersect and at a part where the lower blade 3b and the slide board 7 intersect.
In the first embodiment, an iron plate (not shown) is each disposed at a part where the spherical body installed in the support member 5 comes in contact with the lower surface of the upper blade 3a and the upper surface of the slide board 7. In the first embodiment, the support member 5 is a ball transfer, however, is not limited to this. The support member 5 may be a well-known means for a smooth slide of two plates being in contact with each other.
In the first embodiment, the first edge 14 and the second edge 45 are made of carbon steel, however, are not limited to this, and any other material may be used.
<Manufacture Method>Next is described a method of manufacturing the slide play apparatus 1.
The body part 2 is unitarily formed and is made of carbon fiber reinforced plastic (CFRP) having elasticity and high strength. As shown in
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Material of which the body part 2 is made is not limited to the carbon fiber reinforced plastic, and may be, for example, glass fiber reinforced plastic (GFRP), acrylonitrile butadiene styrene (ABS), or the like. Further, the material is not limited to resin and may be wood, metal, or the like. The material is preferably light and excellent in durability, elasticity and strength.
In the first embodiment, the body part 2 is unitarily formed, however, is not limited to this configuration. The body part 2 may be formed by joining separately-formed boards such as, for example, the upper board 6, slide board 7, nose board 8, and tail board 9.
Alternatively, the body part 2 maybe formed in a so-called sandwich structure, in which a wooden board or foamed polyurethane is interposed between a pair of carbon fiber reinforced plastic plates 51, 51.
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In the first embodiment, material of which the blade 3 is made is carbon fiber reinforced plastic, however, is not limited to this. For example, the material may be glass fiber reinforced plastic (GFRP), acrylonitrile butadiene styrene, (ABS), or the like. Further, the material is not limited to resin and may be wood, metal, or the like. The material is preferably light and excellent in durability, elasticity and strength. The material for the body part 2 may be different from that for the blade 3.
The support members 5, 5 are interposed between the upper blade 3a and lower blade 3b and between the lower blade 3b and the upper surface of the slide board 7 (see
The spring 4 is then interposed between the upper board 6 and the upper blade 3a. In the first embodiment, an upper end of the spring 4 and the lower surface of the upper board 6 as well as a lower end of the spring 4 and the upper surface of the upper blade 3a are fixed with an epoxy resin adhesive. The spring 4 may not necessarily be fixed but may only come in contact with the lower surface of the upper board 6 and the upper surface of the upper blade 3a utilizing elasticity of the spring 4.
In the first embodiment, a configuration is provided, but is not limited to, that the blade 3 and the lower surface of the upper board 6 are fixed to each other with the epoxy resin adhesive. Any other adhesive or a fastening member such as a screw may be used for the fixation. Both an adhesive and a fastening member may be used for the fixation.
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Dimensions described above are not intended to limit the present invention.
The manufacture method described above is only for illustration and is not intended to limit the present invention.
<Operations>Next are described operations of the slide play apparatus 1. In the first embodiment, description is made assuming a slide on snow surface (piste).
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In the first embodiment, a term “compressed” means that a distance between the upper board 6 and the slide board 7 (between the fixing portion and the contact portion) becomes smaller than that in a resting state, due to a weight shift of the player P. Herein, the resting state is referred to as a state in which the player P's weight acts on the slide board 7 in a vertical direction. Further, a term “extended” means that the distance between the upper board 6 and the slide board 7 (between the fixing portion and the contact portion) becomes smaller than that in the resting state.
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Herein, description is made assuming that the player P makes a turn to the right in the sliding direction (in a direction of arrow 62 of
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Then the protruding portion 43a of the upper blade 3a is pushed in a direction of the weight shift. This allows the second edge 45a to catch the sliding surface S, enabling a turn to be made sharply.
More specifically, if the player P shifts his/her weight to the left foot font side (tiptoe side), the distance between the left foot front fixation portion 31 and the left foot front contact portion 32 is compressed, and, at the same time, the distance between the right foot rear fixation portion 34 and the right foot rear contact portion 35 is extended because of reaction force of the compression (see
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In the central part C, the upper blade 3a, lower blade 3b, and the support member 5, 5 slide toward the rear side (heel side). That is, as shown in
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For the reasons described above, the second edge 45a disposed on the protruding portion 43a, the first edge 14a disposed on the slide board 7, and the second edge 45d disposed on the protruding portion 43d catch the sliding surface. Further, the player P can make a turn sharply, because the protruding portions 43a, 43d having the second edges 45a, 45d are each provided with a second side curve r (see
The protruding portions 43a, 43d are pushed toward the sliding surface S along with the weight shift of the player P. This allows the second edges 45a, 45d to keep on contacting with the sliding surface S without bouncing back from the sliding surface S while the player P is making a turn.
Further, the player P can make a sharp turn and good braking, if the player P makes a turn in a direction of arrow 62 while shifting the weight (applying a large load) to the right foot front side (tiptoe side). This is because the edge 45d disposed on the protruding portion 43d further catches the sliding surface S.
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The player P can also make a turn to the left by shifting the weight to the right foot front side (tiptoe side) or the right foot rear side (heel side).
The player P can make various types of turns because the player P can use the first edge 14 or the second edge 45 accordingly by adjusting the weight shift.
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The slide play apparatus 1 according to the first embodiment has a configuration in which the body part 2 is formed of a substantial cylinder, and the slide board 7 and the upper board 6 positioned above the slide board 7 are connected with the nose board 8 and the tail board 9. In the configuration, the nose board 8 and the tail board 9 serves as cushions, to thereby cushion an impact exerted on the feet of the player P. Since the impact exerted on the feet of the player P is cushioned, the player P can have sliding fun and feeling different from those obtained from conventional apparatuses.
The slide play apparatus 1 has the outer end 13 of the slide board 7, having the first side curve R. This allows a turn to be made smoothly because the first edge 14 catches the sliding surface S along the first side curve R.
The blade 3 has the protruding portion 43 with the second edge 45 disposed thereon. The second edge 45 is positioned further outside than the first edge 14 disposed on the outer end 13 of the slide board 7. Upon the weight shift of the player P, the blade 3 slides in a direction of the weight shift, and the second edge 45 disposed on the protruding portion 43 catches the sliding surface S. The player P can make a sharper turn because the second side curve r formed on the outer end 44 of the protruding portion 43 has a curvature larger than that of the first side curve R of the slide board 7.
The slide play apparatus 1 includes the upper blade 3a and the lower blade 3b disposed crossly with respect the longitudinal axis X of the slide board 7 to have a substantially X shape as viewed from above. If the player P puts his/her weight, for example, on the left foot front side (tiptoe side), the distance between the left foot front fixation portion 31 and the left foot front contact portion 32 is compressed, and, at the same time, the distance between the right foot rear fixation portion 34 and the right foot rear contact portion 35 is extended because of reaction force of the compression. This facilitates a smooth weight shift of the player P. Further, the curved portion of the blade 3 also enhances a cushioning property.
The slide play apparatus 1 has the support member 5. This allows friction caused between the slide board 7 and the blade 3 which are in contact with each other to be reduced, thus enabling a smooth slide of the blade 3.
The slide play apparatus 1 has the spring 4 interposed between the upper board 6 and the slide board 7. This enhances a cushioning property therebetween, which allows a flexible response to a vertical load subjected to the upper board 6 and the slide board 7.
The slide board 7 has a width smaller than that of the upper board 6. This allows frictional resistance of the slide board 7 to be reduced and a possible range of the weight shift to be narrowed, thus enabling a turn to be made easily.
As described above, the embodiment according to the present invention has been explained in detail with reference to the related drawings. However, the present invention is not limited to the embodiment, and various changes are possible without departing from the gist of the present invention.
Second EmbodimentAs shown in
The blade 3 in the first embodiment is formed by combining two boards. However, as shown in
The blade 73 has a curved portion 78 (78a to 78d) formed by bending the foot portion 76. An end 77 (77a to 77d) of the foot portion 76 is fixed to a lower surface of the upper board 79.
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A manufacture method and operations in the second embodiment are substantially same as those in the first embodiment, and description thereof is omitted herefrom.
In the second embodiment, the blade 73 has the foot portion 76 extending from the central part W to have a substantially X shape as viewed from above. That is, the blade 73 is formed from a single board. This prevents the upper blade 3a and the lower blade 3b from having different distances therebetween, unlike in the first embodiment. Therefore, it becomes easy to lap the foot portions 76a to 76d of the blade 73.
Third EmbodimentIn the first embodiment and the second embodiment, the feet of the player P are fixed at right angles with respect to a longitudinal direction of the slide play apparatuses 1, 71. However, the present invention is not limited to this configuration. For example, as shown in
In the third embodiment, the slide play apparatus 90 includes: a body part 93 including an upper board 91 and a slide board 92; a blade 94; a spring 95; and a support member (not shown). Each width of the upper board 91 and the slide board 92 is formed to be smaller than a width of the player P. A length in the longitudinal direction of the slide play apparatus 90 is formed shorter than that of the slide play apparatus 1, and is about 100 cm. Each foot of the player P is fixed substantially above the spring 95.
A manufacture method and operations in the third embodiment are substantially same as those in the first embodiment, and description thereof is omitted herefrom.
In the third embodiment, the slide play apparatus 90 has a configuration as described above, however, is not limited to this. The length, width, or the like of the slide play apparatus 90 may be determined according to a height and a playing style of the player P.
Fourth EmbodimentAs shown in
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With the recessed portion 120 on the upper board 116, a height of the foot of the player P is lowered, thus enabling the player P to get on and off the slide play apparatus 110 without difficulty. Further, a distance between the foot of the player and the slide board 117 is reduced. This makes it possible to easily transmit a weight shift of the player P onto the slide board 117, thus enabling a further smooth slide. Alternatively, as shown in
In the fourth embodiment, as shown in
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The support member 130 includes: a rotating body 132 disposed to be in contact with above and below; a rotational axis 133 inserted into the rotating body 132; a T-shaped support metal 134 into which the rotational axis 133 is inserted; and a joint 135 jointing the T-shaped support metal 134 and the lower blade 113b.
The rotating body 132 includes a first rotating body 132a positioned below and a second. rotating body 132b positioned above, which are spherical bodies having same diameters and made of hard rubber. A lower end of the first rotating body 132a is in contact with the slide board 117, and an upper end thereof, with the second rotating body 132b. A lower end of the second rotating body 132b is in contact with the first rotating body 132a, and an upper end thereof, with the upper blade 113a.
The rotational axis 133 includes a first rotational axis 133a and a second rotational axis 133b, which are inserted into respective centers of the first rotating body 132a and the second rotating body 132b. Axis directions of the first rotational axis 133a and the second rotational axis 133b are parallel to a longitudinal direction of the slide play apparatus 110 and are horizontal. Both ends of the rotational axis 133 are provided with grooves, on which respective nuts 133c are screwed for fixation.
T-shaped support metal 134 is configured by a first T-shaped support metal 134a and a second T-shaped support metal 134b in a pair. The T-shaped support metal 134 pivotally supports the rotating body 132 and is jointed to the lower blade 113b via the joint 135. As shown in
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With the support member 130, if the player P shifts his/her weight in a front/rear direction (on a tiptoe/heel side), the first rotating body 132a and the second rotating body 132b rotate about the rotational axis 133 while coming in contact with above and below. This causes a smooth slide of the upper blade 113a and the lower blade 113b in a width direction thereof. The support member 130 with the absorber 140 inserted thereinto absorbs load acting thereon and allows a travel of the upper blade 113a and the lower blade 113b in the longitudinal direction. This makes it possible to make a sharp turn, because, similarly to the slide play apparatus 1 in the first embodiment, the player P's weight shift enables the second edges of the upper blade 113a and the lower blade 113b to catch a sliding surface.
Suppose that the rotational axis 133 is fixed to the T-shaped support metal 134. The first rotating body 132a and the second rotating body 132b gall to create a gap therebetween, rotating without any contact with each other. In the fourth embodiment, however, the long hole 136 is formed to allow the rotational axis 133 to travel up and down therein. This makes it possible for the first rotating body 132a and the second rotating body 132b to be constantly in contact with each other, when a load of the player P acts on the upper board 116, thus preventing rotation without contact.
In the fourth embodiment, the support member 130 used has a configuration as described above, however, other configuration is also available. For example, the rotating body 132 used is spherical, however, it may be oval spherical. The T-shaped support metal 134 used is a pair of metal members, however, may be integrally formed. A shape and a material of the absorber 140 may be determined according to a playing style of the player P. A cushion may be provided in the long hole 136 in accordance with an inner shape thereof so as to prevent the long hole 136 and the rotational axis 133 from galling.
As described above, the embodiment according to the present invention has been explained with reference to the related drawings. However, the present invention is not limited to the embodiments, and various changes are possible without departing from the gist of the present invention. Further, the present invention may be used not only for recreation but also for other purpose.
In the first and second embodiments, the slide play apparatus 1 is used in a substantially same way as a snowboard. However, for example, the slide play apparatus 1 may be used in a same way as a sled by putting a box-like body suited for carrying something or someone on the upper board 6 of the slide play apparatus 1. This case is described with reference to
Further, the slide play apparatus with such a box-like body put an object (including a person) therein may be pulled from a side of the nose board 8 (see
The slide play apparatus according to the present invention may only include the body part 2 without including the blade 3, spring 4, and support member 5, for example (see
In the first embodiment, description is made assuming that the slide play apparatus according to the present invention slides on a snow surface, however, is not limited to this configuration. The slide play apparatus may slide on a surface of, for example, lawn, sand or water.
In the first embodiment, the blade 3 is used for the slide play apparatus 1, however, is not limited to this configuration. The blade 3 may be used for other structure.
Claims
1. A slide play apparatus comprising:
- a slide board having a first edge at an outer end thereof and sliding on a slope;
- an upper board positioned above the slide board;
- a nose board connecting one end of the slide board to one end of the upper board; and
- a tail board connecting the other end of the slide board to the other end of the upper board,
- the slide play apparatus being formed of a substantial cylinder.
2. The slide play apparatus according to claim 1, wherein the outer end has a first side curve.
3. The slide play apparatus according to claim 2, wherein a blade comprising: a protruding portion protruding more outward than the outer end of the slide board; a second side curve formed on the outer end of the protruding portion and having a curvature larger than that of the first side curve; and a second edge disposed on the outer end of the protruding portion, comes in contact with an upper surface of the slide board.
4. The slide play apparatus according to claim 3, wherein the slide play apparatus further comprising two blades disposed crossly with respect a longitudinal axis of the slide board and having a substantially X shape as viewed from above, each blade having: a contact portion coming in contact with the upper surface of the slide board; curved portions disposed on a nose board side and on a tail board side; and a fixing portion fixed to a lower surface of the upper board.
5. The slide play apparatus according to claim 4, wherein the slide play apparatus further comprising a support member each for reducing friction between the slide board and one of the two blades and between the two blades, the support member each being disposed at portions at which the slide board and the one blade, and the two blades are crossed.
6. The slide play apparatus according to claim 5, wherein an elastic body is interposed between the slide board and the upper board.
7. The slide play apparatus according to claim 6, wherein a width of the sliding surface is smaller than a width of the boarding surface.
8. The slide play apparatus according to claim 1, wherein the upper board has a recessed portion which is depressed toward the slide board.
9. A pair of blades disposed crossly with respect a longitudinal axis of a slide board between the slide board and an upper board disposed thereabove and having a substantially X shape as viewed from above, each blade comprising:
- a contact portion coming in contact with an upper surface of the slide board;
- curved portions disposed on both ends of the contact portion; and
- a fixing portion each fixed to both ends of the blade to a lower surface of the upper board,
- each blade further comprising a protruding portion protruding more outward than the outer end of the slide board.
Type: Application
Filed: Mar 14, 2007
Publication Date: Jul 16, 2009
Inventor: Junzo Ota (Tokyo)
Application Number: 12/293,779
International Classification: A63C 5/03 (20060101);