although specific embodiments of the present invention will now be described with reference to the drawings , it should be understood that such embodiments are by way of example only and merely illustrative of but a small number of the many possible specific embodiments which can represent applications of the principles of the present invention . various changes and modifications obvious to one skilled in the art to which the present invention pertains are deemed to be within the spirit , scope and contemplation of the present invention as further defined in the appended claims . referring to fig1 through 7 , there is shown at 10 the present invention practice device . in the preferred embodiment , the practice device is generally elongated with a top surface 12 having a depressed or lowered section 14 in the interior portion of the upper surface 12 and a circumferential ridge 16 which extends along the entire upper surface 12 and extends inwardly from the exterior edge until it joins the lowered section 14 . a short vertical wall 18 is created between the interior edges of the ridge 16 and the lower section 14 . while in the preferred embodiment the ridge extends along the entire circumference as shown in fig1 , it is also within the spirit and scope of the present invention to have the ridge 16 only extend along at least a portion of the lengthwise edges of the upper surface of the device 10 . referring to fig2 , the device has a first lengthwise edge 20 , and a parallel and oppositely disposed second lengthwise edge 22 , a front or first widthwise edge 24 and a second or rear widthwise edge 26 . referring to the bottom plan view of fig3 , it can be seen that the lower surface of the device 30 is completely smooth and flat . this can also be seen by looking at the side views of fig4 and 5 . the center section of the lower surface 32 is completely flat and is bounded by the center portion lengthwise edges 20 and 22 . as shown in fig4 and 5 , the front edge 24 and the rear edge 26 are upturned from the lower surface 30 . the preferred angle for both the front and rear edges are 45 degrees as shown in fig4 and 5 . however , it is within the spirit and scope of the present invention to have the angle extend between 30 degrees and 50 degrees with 45 degrees being the preferred angle . the lower surface of the front upturned section is 34 and the lower surface of the rear upturned section is 36 are also smooth . it is apparent from viewing fig3 through 5 that the lower surface 30 is entirely smooth and flat with no ridges or bumps and the lowermost lengthwise portion of the surface 32 is completely flat and smoothly extends into lower surface 34 and lower surface 36 so that as the device is slid along a surface , the device can be tilted upwardly so that surface 34 extends on the bottom of the ground or is tilted rearwardly so that surface 36 extends on the bottom of the ground to thereby simulate skateboarding . in one embodiment , the entire device is made of a solid piece of material . in an alternative embodiment , the interior of the device 40 has one or more hollow sections such as section 42 as illustrated in fig8 , which hollow section 42 contains noisemaking devices 44 such as beads , pebbles , or sand . the hollow section 42 can run the entire length of the center portion of the device or it can also run for a portion of the length of the center portion of the device , or there can be several separated hollow sections within the center portion of the device . also , it is within the spirit and scope of the present invention to have the hollow section run on the front portion of the device bounded by front edge 24 or within the rear portion of the device bounded by rear edge 26 . in practice , a child can place on of his / her feet on the upper surface of the device 10 such as lowered section 14 and push along the surface of the ground with his / her other foot to cause the practice device 10 to move . when pushed in one direction , the device moves forwardly and when pushed in the other direction , the device moves rearwardly . the device can also be caused to move side to side . the child can also place his / her feet transverse to the lengthwise edge of the upper section as illustrated in fig9 . in this manner , the balls of the child &# 39 ; s feet can rest at the vertical wall 18 at the intersection of the lower section 14 and the ridge 16 to provide better traction and balance as a child moves the board with body motions to simulate skateboarding . alternatively , the rear of the child &# 39 ; s feet can rest at the intersection wall 18 where the lower section 14 meets the ridge 16 . because of the flat surface 30 , and especially center section 32 , the practice device 10 can easily slide on any type of reasonably smooth surface such as grass , carpet , a wood floor , a linoleum floor , dirt , and even a bed . the fact that the lower portion 34 of the front section and the lower portion 36 of the rear section are also flat and smooth can also facilitate the board being ridden on these surfaces as well to further simulate a skateboard . in addition , the lowered center section 14 and the ridge 16 provide better traction and security for the child to safely move on the board and to practice skateboarding . the fact that the front edge 24 and the rear edge 26 are each extended at an angle above the lower surface of approximately 45 degrees prevents the practice device 10 from flipping over to provide additional safety to the child . while 45 degrees is the preferred angle , an angle between 30 degrees and 50 degrees are within the spirit and scope of the present invention for the front portion and also for the rear portion relative to the center section . the optional feature of having one or more hollow interior compartments within the practice device which house noisemaking devices such as beads , pebbles or sand adds further enjoyment to the child as motion of the board will simulate a wave motion noise . in the preferred embodiment , the practice device 10 is manufactured out of any one or more of conventional plastic material such as polyethylene and polypropylene or polyvinyl . it is also within the spirit and scope of the present invention to make the practice device out of any other type of safe structural material such as wood or metal or even strong cardboard or styrofoam . however , plastic or any one of the plastic derivatives is the preferred material out of which the board is made as the device can then be easily molded . it is also within the spirit and scope of the present invention to have the device made of more than one material such as the center section on the top being made of one type of material and the ridge and exterior circumferential section composed of the ridge being made of another piece of material . further , to add additional traction , one or more grip pads 46 can be placed on the lowered section 14 of upper surface 12 so that the feet can be placed on the grip pads 14 to add more traction . while only one grip pad 14 is illustrated in fig9 , it will be appreciated that the lower surface 14 can have a grip pad or there can be a multiplicity of separated smaller grip pads along the lower surface 14 . it is also within the spirit and scope of the present invention to have the grip pads on the one or more portions of the ridge as illustrated in fig9 where grip pad 48 is on a portion of the ridge 16 . defined in detail , the present invention is a practice device to simulate skateboarding , comprising : ( a ) an elongated structure having a center section , a front section and a rear section , with the three sections having an adjoining upper surface and an adjoining lower surface ; ( b ) the center section having a lower surface which is a smooth surface ; ( c ) the front section extending at a 45 degree angle to the center section and the rear section extending at a 45 degree angle to the center section ; ( d ) the upper surface of all three sections having a lowered interior area and a circumferential ridge extending along the circumference of the upper surface and extending inwardly such that a vertical wall is formed at the intersection of the interior portion of the circumferential ridge and the lowered interior area ; and ( e ) the structure having at least one interior hollow chamber containing noisemaking material within the chamber . defined broadly , the present invention is a practice device to simulate skateboarding , comprising : ( a ) an elongated structure having a center section , a front section and a rear section , with the three sections having an adjoining upper surface and an adjoining lower surface ; ( b ) a center section having a lower surface which is a smooth surface ; ( c ) a front section extending at a 45 degree angle to the center section and the rear section extending at a 45 degree angle to the center section ; and ( d ) an upper surface of all three sections having a lowered interior area and a circumferential ridge extending along the circumference of the upper surface and extending inwardly such that a vertical wall is formed at the intersection of the interior portion of the circumferential ridge and the lowered interior area . defined more broadly , the present invention is a practice device to simulate skateboarding , comprising : ( a ) an elongated structure having a center section , a front section and a rear section , with the three sections having an adjoining upper surface and an adjoining lower surface ; ( b ) the center section having a lower surface which is a smooth surface ; ( c ) the front section extending at an angle between 30 degrees and 50 degrees to the center section and the rear section extending at an angle between 30 degrees and 50 degrees to the center section ; and ( d ) the upper surface of all three sections having a lowered interior area and a ridge extending along at least a portion of the circumference of the upper surface and extending inwardly such that the ridge adjoins the lowered interior area . of course the present invention is not intended to be restricted to any particular form or arrangement , or any specific embodiment , or any specific use , disclosed herein , since the same may be modified in various particulars or relations without departing from the spirit or scope of the claimed invention hereinabove shown and described of which the apparatus or method shown is intended only for illustration and disclosure of an operative embodiment and not to show all of the various forms or modifications in which this invention might be embodied or operated . the present invention has been described in considerable detail in order to comply with the patent laws by providing full public disclosure of at least one of its forms . however , such detailed description is not intended in any way to limit the broad features or principles of the present invention , or the scope of the patent to be granted . therefore , the invention is to be limited only by the scope of the appended claims .
a practice device to enable children to simulate skateboarding in a safe manner so the children can practice sliding the practice device on a surface and balancing themselves on the device . the device comprises a center section , a front section and a rear section where the front and rear sections are at an angle to the center section and the bottom surface of the device is entirely smooth to facilitate the movement of the device on a surface . the upper surface of the device has a lowered interior area surrounded by a circumferential ridge .