the drawings illustrate some of the means of accomplishing the purposes succinctly set forth in the abstract hereof . the preferred embodiments provide additional details in describing with reference to drawings that illustrate , but do not limit , the invention in which : fig1 shows an axial elevational view of an embodiment of a wheel with a perimetric , tire - location surface having one or more axial grooves across the width of the wheel and about at least part of its circumference . riding vehicles , such as , for example quad skates or skateboards containing one or more of such wheels will produce a more stimulating ride than a ride on conventional wheels . fig1 a shows a front elevational view of an example of the embodiment of fig1 . fig1 b shows a thinner version of an example of the embodiment depicted in fig1 a that would provide a more stimulating ride on , for example , in - line skates and scooters . fig2 is similar to fig1 but contains more axial grooves such that it would produce a more stimulating ride of a different intensity and create a different sound pattern in its use . fig2 a shows a front elevational view of the embodiment of fig2 , a wheel suitable for proving a more stimulating ride on quad skates and skateboards . fig2 b shows a thinner version of 2 a that would be suitable for providing a more stimulating ride on , for example , in - line skates and scooters . fig3 illustrates another means of creating a more stimulating ride on riding vehicles , one or more of the wheels of which have one or more radial projections on both sides . fig3 a is a different view of fig3 c and illustrates a wheel that would produce a more stimulating ride on quads and skateboards . fig3 b illustrates a thinner version of fig3 a that would be appropriate for scooters and in - line skates . fig3 d , 3 e and 3 f have more radial projections than do their respective counterparts in fig3 , 3 a and 3 b and will produce a more stimulating ride of a different intensity and a different sound pattern in their use , but are otherwise analogous . fig4 , 4 a and 4 b show another means of providing a more stimulating ride on riding vehicles using one or more wheels with one or more radial projections axially spaced across the riding surface of the wheel instead of axial grooves , as in fig2 , 2 a and 2 b . fig5 , 5 a and 5 b illustrate another means of providing a more stimulating ride on riding vehicles using one or more wheels with one or more axially spaced radial projections . fig6 , 6 a and 6 b illustrate still another means of providing a more stimulating ride with an axial pattern of one or more radial projections on the riding surface of the wheel . fig7 , 7 a and 7 b illustrate views of a roller with a perimetric , tire - location surface with another axial pattern of radial projections . such a roller may provide a more stimulating ride on riding vehicles such as , for example , quads and skateboards by replacing the front or rear wheels , or both . fig7 c is a bottom plan view of a schematically shown riding vehicle having both front and rear rollers . fig8 and 8a illustrate riding vehicles with a tractor or tank - like tread connecting the left front and left rear tire and another such tread ( not shown in fig8 ) connecting the right front and right rear tire of , for example , quad skates . such treads may produce a more stimulating ride by , for example , employing axial grooves , as described in fig1 , radial projections , as described in fig4 , radial projections as described in fig5 , or an axial pattern as described in fig6 , spaced about the perimeters of both treads . fig9 is a top plan view of an example of a rink or other riding surface that would produce a more stimulating ride ( and accompanying unique sound pattern ) for riders on such conventional riding vehicles as , for example , quads or in - line skates . such rink or other riding surface may be created by a pattern of closely spaced protruding ribs , shallow grooves , rounded ridges , and the like . fig1 is a bottom plan view of another schematically shown riding vehicle such as , for example , a scooter in which an innovative middle tire with axial grooves has been added to the conventional scooter model . such innovative tire may be of the kind described in fig1 b , 2 b , 3 b , 4 b , 5 b , or 6 b designed to deliver a ( mildly ) more stimulating ride , although those referenced in fig2 b and 3b are the preferred embodiments . fig1 a is a bottom plan view of another schematically shown riding vehicle such as , for example , a scooter in which the middle and rear wheels have a different number of axial grooves , which riding vehicle will provide a more stimulating ride of a different intensity . fig1 illustrates a bottom plan view of another schematically shown riding vehicle such as , for example , a skateboard with front and rear pairs of axially spaced conventional skateboard wheels in quad arrangement with the capacity to receive up to three additional innovative tires . fig1 shows an additional three innovative tires according to the embodiment shown in fig5 a spaced down the center of the underside of the riding platform . one , two , or three other innovative tires may be substituted such as those described in fig1 a , 2 a , 3 a , 4 a , and 6 a . fig1 a is a bottom plan view of another schematically shown riding vehicle having front and rear pairs of axially spaced wheels in quad arrangement and another pair of axially spaced innovative wheels therebetween having perimetric , tire - location surfaces with axial grooves thereacross as in fig2 a . as all of the tires may be caused to be readily attachable and detachable , the rider would have a wide choice of more stimulating rides of varying intensity and velocity . fig1 is a bottom plan view of another schematically shown riding vehicle having four innovative in - line wheels with axial grooves thereacross of the type shown in fig1 b for the purpose of delivering a more stimulating ride . fewer innovative wheels than as shown in fig1 a or 12 b will produce a more stimulating ride of differing intensities . other types of innovative wheels may be substituted for the type shown . as the tires in all of these embodiments , as well as conventional tires , may be interchangeable , a rider may customize his or her ride by employing any combination of such tires on a particular ride . fig1 is an axial elevational view of another embodiment of a wheel with a perimetric , tire - location surface having one or more rounded radial projections on the opposite sides thereof and slightly protruding ball bearings axially spaced therebetween that in concert deliver a higher - velocity more stimulating ride . fig1 a and 13b illustrate other views of fig1 to show the ball bearings in a recessed holder fixed or rotatable about the wheel . fig1 is a bottom plan view of another schematically shown riding vehicle ( the “ super quad ”), with the front and rear pairs of wheels in quad arrangement ( shown here with conventional riding surfaces ) and the middle pair as in the embodiment shown in . fig1 a . the middle axle and its wheels may be fixed or removable . several combinations involving up to six innovative wheels are possible in original manufacture or , owing to the readily detachable and attachable feature described herein , to serve the purpose of providing riders a wide choice of more stimulating rides . fig1 illustrates a front / top / let - side elevational view of a quad skate with innovative quad wheels according to the embodiment shown in fig2 a . other innovative wheels may be substituted in lieu of those shown . the objectives of the invention may be achieved in a variety of ways . although the preferred embodiments of the invention have been disclosed herein , for illustrative purposes by way of example and not by way of limitation , those skilled in the art will appreciate that various modifications , additions and substitutions are possible that will achieve a similar objective or objectives without departing from the scope and spirit of the invention as disclosed in the accompanying claims . the accompanying claims of the invention relate at least to quad and in - line skates , “ super quads ,” skateboards , scooters , and other riding vehicles that employ or utilize riding elements such as , for example , but not by way of limitation , innovative wheels , tires , rollers , ball or roller bearings , spindles , and tank and tractor - like treads , the sounds emitted by such innovative riding elements in use , and to an innovative roller - skating rink or other riding surface on which skaters on conventional quads and in - line skates may enjoy some of the benefits and advantages available to quad and in - line skaters on innovational riding elements .
a non - motorized riding vehicle for transport of a rider on a surface . the riding vehicle includes a shoe body or platform for supporting at least one foot of the rider during the transport and at least one riding element under the shoe body or platform that rotates on an axle to facilitate the transport while supporting the rider . the at least one riding element includes stimulating elements for creating a periodic vibration during the transport that makes the transport on the surface less smooth than the transport would be if the at least one riding element did not include the stimulating elements . also , a kit and method for converting the riding vehicle to a riding vehicle with a more or less vibratory ride .