Patent Publication Number: US-10773174-B1

Title: Automated devices using rotational motion to apply chalk to a surface

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application is a U.S. nonprovisional patent application of, and claims priority under 35 U.S.C. § 119(e) to, U.S. provisional patent application Ser. No. 62/522,844 filed Jun. 21, 2017, a copy of which is attached hereto as Appendix A, and U.S. provisional patent application Ser. No. 62/630,555 filed Feb. 14, 2018, a copy of which is attached hereto as Appendix B. Both provisional patent applications are incorporated by reference herein. 
    
    
     COPYRIGHT STATEMENT 
     All of the material in this patent document is subject to copyright protection under the copyright laws of the United States and other countries. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in official governmental records but, otherwise, all other copyright rights whatsoever are reserved. 
     BACKGROUND OF THE PRESENT INVENTION 
     Field of the Present Invention 
     The present invention relates generally to automated devices where rotational motion of chalk is used to apply the chalk to a surface either randomly or through a programmable and wireless interface. 
     Background 
     It can be appreciated that automated devices such as vehicles, motorized vehicles, remote control vehicles, toy vehicles, robot vehicles, and the tire and wheel assemblies providing locomotion, for such vehicles to move have been in use for years. Typically, wheels used for locomotion for such vehicles include alloy wheels, artillery wheels, casters, big wheels, cartwheels, mansell wheel, mecanum wheel, omni wheel, wire wheels and the like. Tires used for locomotion on such wheels include rubber tires, plastic tires, polymer tires, clay tires and metal tires. While these wheel and tire devices and systems may be suitable for the particular purpose to which they address, they are not suitable for creating images and designs on pavement. The present invention is an improvement to current tire and wheel assemblies, and more specifically, the invention is used to mark, render or draw images and designs on pavement by rotary sanding of solid chalk on such pavement surfaces, while providing locomotion for a vehicle. 
     Other pavement marking devices such as U.S. Pat. No. 7,029,199 (“Automatic Ground Marking Method and Apparatus”) discloses a ground marking apparatus that uses a laser based electronic distance measuring device that includes a controllable marking system that includes a reservoir for a marking medium, such as paint, and a dispensing nozzle. The controllable marking system in the &#39;199 patent is not a wheel system and does not provide locomotion for the &#39;199 apparatus nor rotary sanding of solid chalk on surfaces. 
     U.S. Pat. No. 8,758,076 (“Radio-controlled toy for free form drawing”) discloses a toy that draws freeform images on pavement via manual and stored drawing sequence controls via radio control of a drawing toy. The toy vehicle disclosed in the &#39;076 patent has its drawing implement holder system attached to its body and does not provide locomotion for the vehicle, and does not rotate the drawing implement to keep the implement sharp. The drawing implement of the &#39;076 vehicle, and of other such prior art, is a separate system from the wheels used to move the &#39;076 vehicle and the drawing implement does not provide locomotion for vehicle movement nor rotary sanding of solid chalk on surfaces. 
     U.S. Patent Publication No. 2010/0095545 (“Chalk drawing device and method”) discloses a stationary base device, without wheels or locomotion, that uses a tape measure for the user to mark pavement with chalk. U.S. Pat. No. 5,529,432 (“Apparatus and method for marking a surface”), U.S. Pat. No. 6,719,467 (“Floor printer”), U.S. Patent Publication No. 2011/0039021 (“Marking of large surface with visual presentations”), and U.S. Patent Publication No. 20160375700 (“Portable Image Printing Device”) all likewise disclose devices using surface marking mechanisms that do not provide locomotion for the vehicle device nor rotary sanding of solid chalk on surfaces. 
     A problem with the devices described above is that they do not have tire and wheel assemblies that rotary sand solid chalk on surfaces to render images and designs, with the tire and wheel system also providing locomotion for the vehicle or device. 
     Another problem with such aforementioned vehicles that use a solid chalk stick for drawing, such vehicles only hold the chalk stick in a static and flat manner and scrape the chalk stick against surfaces, thus are not able to sharpen a solid chalk stick to render a line that is consistent in thickness and boldness. 
     Another problem with such aforementioned vehicles that use a solid chalk stick for drawing, is that the chalk is not used as a tire and mounted on a wheel, where the chalk tire and wheel system can be mounted on an axle. 
     Another problem with such aforementioned vehicles that use a solid chalk stick for drawing, is that the chalk is not used as a tire and mounted on a wheel, where the chalk tire and wheel system can be mounted on an axle, where the chalk tire and wheel system can be easily removed from the axle and changed with a new chalk tire and wheel system, when the chalk tire has been sanded and worn down. 
     Another problem with such aforementioned vehicles that use solid chalk for drawing, is that such vehicles do not have a solid chalk tire that is permanently mounted on a wheel, where the wheel is disposed, once the chalk tire has been sanded and worn down can replaced with a spare or new chalk tire and wheel. 
     Another problem with such aforementioned vehicles that use solid chalk for drawing, is that such vehicles do not have a solid chalk tire, that is manufactured by the method of casting a chalk tire directly onto a wheel during manufacture, for permanent mounting of a chalk tire on a wheel. 
     Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. 
     SUMMARY OF THE PRESENT INVENTION 
     Broadly defined, the present invention according to at least a first aspect pertains to a device utilizing rotational movement of a piece of chalk to apply a graphic to a surface, including: a chassis; a motor connected to the chassis; a solid piece of chalk supported by a mounting structure carried by the chassis; and a rotatable axle or spindle that transmits rotational movement from the motor to the solid piece of chalk via the mounting structure such that the solid piece of chalk may be sanded by a surface to render a graphic to the surface. In a feature of this aspect, the device may be moved, relative to the surface, under the control of operational input received from a remote communication device. 
     In another feature of this aspect, the device is a self-propelled vehicle, and the chassis is a vehicle chassis. 
     In various sub-features, the solid piece of chalk is part of a chalk wheel assembly, the rotatable axle or spindle is a vehicle axle, and the vehicle axle transmits rotational movement from the motor to the chalk wheel assembly such that the chalk wheel assembly is sanded by a surface on which the vehicle is driven to render the graphic to the surface; the solid piece of chalk is a chalk tire, the mounting structure is a wheel that is part of the chalk wheel assembly, and the vehicle axle transmits rotational movement from the motor to the chalk wheel assembly such that the chalk tire is sanded by a surface on which the vehicle is driven; the chalk tire is semi-permanently mounted to the wheel such that the chalk tire may be replaced after being worn down by being sanded by the surface; the chalk tire is ring-shaped with a flat periphery; the chalk tire is torus-shaped; the chalk tire is semi-conically shaped; the vehicle includes a plurality of chalk wheel assemblies; and/or rotation of the chalk tires propels the vehicle. 
     In further sub-features, the solid piece of chalk is part of a rotary sanding chalk device and the axle or spindle rotates about an axis that is directed downward toward the surface such that a lower end of the solid piece of chalk is sanded by a surface on which the vehicle is driven to render the graphic to the surface; the device further includes a wheel assembly that propels the vehicle on the surface while the solid piece of chalk rotates and is sanded by the surface; the vehicle is partially supported by the solid piece of chalk; the solid piece of chalk is biased downward relative to the chassis; the device includes two wheel assemblies that propel the vehicle on the surface while the solid piece of chalk rotates and is sanded by the surface; the solid piece of chalk, mounting structure, and rotatable axle or spindle are a first solid piece of chalk, first mounting structure, and first rotatable axle or spindle, the device further comprises a second solid piece of chalk, a second mounting structure, and a second rotatable axle or spindle, and rotational movement is transmitted to the second solid piece of chalk via the second mounting structure such that the second solid piece of chalk may be sanded by the surface to render a graphic to the surface; the solid piece of chalk, the mounting structure, and the rotatable axle or spindle form a first rotary sanding chalk device, wherein the device further comprises at least two other rotary sanding chalk devices that each include a respective solid piece of chalk, mounting structure, and rotatable axle or spindle, and wherein the vehicle is fully supported on the at least three rotary sanding chalk devices. 
     In another feature of this aspect, the device further includes a wireless receiver to receive the operational input from the remote communication device. In further features, the wireless receiver receives the operational input from a remote communication device that is a mobile smart device; and/or the wireless receiver receives the operational input from a remote communication device that is a remote controller. 
     Broadly defined, the present invention according to at least a second aspect pertains to a system utilizing rotational movement of a piece of chalk to apply a graphic to a surface, including: a chalk drawing device that incorporates a chassis, a motor connected to the chassis, a wireless receiver to receive operational input, a solid piece of chalk supported by a mounting structure carried by the chassis, and a rotatable axle or spindle that transmits rotational movement from the motor to the solid piece of chalk via the mounting structure such that the solid piece of chalk may be sanded by a surface to render a graphic to the surface; and a remote communication device, including a transmitter, to provide the operational input to the device, via the wireless receiver, to control the chalk drawing device. In a feature of this aspect, the chalk drawing device may be moved, relative to the surface, under the control of operational input received from the remote communication device. 
     In another feature of this aspect, the chalk drawing device is a self-propelled vehicle, and the chassis is a vehicle chassis. 
     In various sub-features, the solid piece of chalk is part of a chalk wheel assembly, the rotatable axle or spindle is a vehicle axle, and the vehicle axle transmits rotational movement from the motor to the chalk wheel assembly such that the chalk wheel assembly is sanded by a surface on which the vehicle is driven to render the graphic to the surface; the solid piece of chalk is a chalk tire, the mounting structure is a wheel that is part of the chalk wheel assembly, and the vehicle axle transmits rotational movement from the motor to the chalk wheel assembly such that the chalk tire is sanded by a surface on which the vehicle is driven; the chalk tire is semi-permanently mounted to the wheel such that the chalk tire may be replaced after being worn down by being sanded by the surface; the chalk tire is ring-shaped with a flat periphery; the chalk tire is torus-shaped; the chalk tire is semi-conically shaped; the vehicle includes a plurality of chalk wheel assemblies; and/or rotation of the chalk tires propels the vehicle. 
     In further sub-features, the solid piece of chalk is part of a rotary sanding chalk device and the axle or spindle rotates about an axis that is directed downward toward the surface such that a lower end of the solid piece of chalk is sanded by a surface on which the vehicle is driven to render the graphic to the surface; the system further includes a wheel assembly that propels the vehicle on the surface while the solid piece of chalk rotates and is sanded by the surface; the vehicle is partially supported by the solid piece of chalk; the solid piece of chalk is biased downward relative to the chassis; the chalk drawing device includes two wheel assemblies that propel the vehicle on the surface while the solid piece of chalk rotates and is sanded by the surface; the solid piece of chalk, mounting structure, and rotatable axle or spindle are a first solid piece of chalk, first mounting structure, and first rotatable axle or spindle, wherein the device further comprises a second solid piece of chalk, a second mounting structure, and a second rotatable axle or spindle, and wherein rotational movement is transmitted to the second solid piece of chalk via the second mounting structure such that the second solid piece of chalk may be sanded by the surface to render a graphic to the surface; and/or the solid piece of chalk, the mounting structure, and the rotatable axle or spindle form a first rotary sanding chalk device, wherein the chalk drawing device further comprises at least two other rotary sanding chalk devices that each include a respective solid piece of chalk, mounting structure, and rotatable axle or spindle, and wherein the vehicle is fully supported on the at least three rotary sanding chalk devices. 
     In another feature of this aspect, the system further includes a wireless receiver to receive the operational input from the remote communication device. In further features, the remote communication device is a mobile smart device that transmits the operational input to the chalk drawing device; the graphic corresponds to an image on the mobile smart device, and the operational input corresponds to instructions for controlling the chalk drawing device to produce the graphic according to the image; and/or the remote communication device is a remote controller that transmits the operational input to the chalk drawing device. 
     Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Further features, embodiments, and advantages of the present invention will become apparent from the following detailed description with reference to the drawings, wherein: 
         FIG. 1  is a perspective view of a rotary sanding chalk device in accordance with one or more preferred embodiments of the present invention; 
         FIG. 2  is perspective rear view of a motorized drawing vehicle with one rotary sanding chalk device mounted to the vehicle in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 3  is a perspective front view of the drawing vehicle shown in  FIG. 2 ; 
         FIG. 4  is a perspective rear view of a user operating a motorized drawing vehicle with two rotary sanding chalk devices mounted to the vehicle in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 5  is a perspective view of a motorized drawing vehicle utilizing three of the rotary sanding chalk devices of  FIG. 1  in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 6  is a perspective view of a motorized drawing vehicle with one rotary sanding chalk device mounted to the vehicle in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 7  is a top view of the motorized drawing vehicle of  FIG. 6 ; 
         FIG. 8  is a perspective view of the motorized drawing vehicle of  FIG. 6  but without the vehicle body; 
         FIG. 9  is a side cross-sectional view of the motorized drawing vehicle of  FIG. 8 ; 
         FIG. 10  is a top view of the motorized drawing vehicle shown in  FIG. 8  but with an angled chalk device; 
         FIG. 11  is a front view of the motorized drawing vehicle of  FIG. 10 ; 
         FIG. 12  is a perspective view of a motorized drawing vehicle together with a plurality of pieces of chalk and a mobile smart device, all in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 13  is a perspective view of the motorized drawing vehicle of  FIG. 12 , shown in operation; 
         FIG. 14  is a perspective view of the motorized drawing vehicle of  FIG. 12  together with a remote controller and a computer, all in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 15  is a perspective view of the motorized drawing vehicle of  FIG. 14 , shown in operation; 
         FIG. 16  is a perspective view of a handheld rotary sanding chalk device in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 17  is a perspective view of the handheld rotary sanding chalk device of  FIG. 16 , shown in operation; 
         FIG. 18  is a perspective view of a mechanical rotary sanding chalk device with three rotary sanding chalk devices mounted to the vehicle in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 19  is a perspective view of a motorized drawing vehicle having a plurality of chalk wheel assemblies in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 20  is a rear-cross-sectional view of the drawing vehicle of  FIG. 19 ; 
         FIG. 21  is a top perspective view of a motorized drawing vehicle wherein all of the wheel assemblies are chalk wheel assemblies in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 22  is a rear cross-sectional view of the motorized drawing vehicle of  FIG. 20  shown using wheel assemblies wherein semi-conical chalk tires have been substituted for the ring-shaped chalk tires of  FIG. 20 ; 
         FIG. 23  is a perspective view of one of the chalk wheel assemblies of  FIGS. 19-21 ; 
         FIG. 24  is a front cross-sectional view of the chalk wheel assembly of  FIG. 23 ; 
         FIG. 25  is a flow diagram showing one method of use in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 26  is a flow diagram showing a second method of use in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 27  is a flow diagram showing a method of manufacture of a chalk wheel assembly in accordance with one or more further preferred embodiments of the present invention; 
         FIG. 28  is a flow diagram showing a method of use in accordance with one or more further preferred embodiments of the present invention; and 
         FIG. 29  is a flow diagram showing a method of use in accordance with one or more further preferred embodiments of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     As a preliminary matter, it will readily be understood by one having ordinary skill in the relevant art (“Ordinary Artisan”) that the present invention has broad utility and application. Furthermore, any embodiment discussed and identified as being “preferred” is considered to be part of a best mode contemplated for carrying out the present invention. Other embodiments also may be discussed for additional illustrative purposes in providing a full and enabling disclosure of the present invention. As should be understood, any embodiment may incorporate only one or a plurality of the above-disclosed aspects of the invention and may further incorporate only one or a plurality of the above-disclosed features. Moreover, many embodiments, such as adaptations, variations, modifications, and equivalent arrangements, will be implicitly disclosed by the embodiments described herein and fall within the scope of the present invention. 
     Accordingly, while the present invention is described herein in detail in relation to one or more embodiments, it is to be understood that this disclosure is illustrative and exemplary of the present invention, and is made merely for the purposes of providing a full and enabling disclosure of the present invention. The detailed disclosure herein of one or more embodiments is not intended, nor is to be construed, to limit the scope of patent protection afforded the present invention, which scope is to be defined by the claims and the equivalents thereof. It is not intended that the scope of patent protection afforded the present invention be defined by reading into any claim a limitation found herein that does not explicitly appear in the claim itself. 
     Thus, for example, any sequence(s) and/or temporal order of steps of various processes or methods that are described herein are illustrative and not restrictive. Accordingly, it should be understood that, although steps of various processes or methods may be shown and described as being in a sequence or temporal order, the steps of any such processes or methods are not limited to being carried out in any particular sequence or order, absent an indication otherwise. Indeed, the steps in such processes or methods generally may be carried out in various different sequences and orders while still falling within the scope of the present invention. Accordingly, it is intended that the scope of patent protection afforded the present invention is to be defined by the appended claims rather than the description set forth herein. 
     Additionally, it is important to note that each term used herein refers to that which the Ordinary Artisan would understand such term to mean based on the contextual use of such term herein. To the extent that the meaning of a term used herein—as understood by the Ordinary Artisan based on the contextual use of such term—differs in any way from any particular dictionary definition of such term, it is intended that the meaning of the term as understood by the Ordinary Artisan should prevail. 
     Regarding applicability of 35 U.S.C. § 112, ¶6, no claim element is intended to be read in accordance with this statutory provision unless the explicit phrase “means for” or “step for” is actually used in such claim element, whereupon this statutory provision is intended to apply in the interpretation of such claim element. 
     Furthermore, it is important to note that, as used herein, “a” and “an” each generally denotes “at least one,” but does not exclude a plurality unless the contextual use dictates otherwise. Thus, reference to “a picnic basket having an apple” describes “a picnic basket having at least one apple” as well as “a picnic basket having apples.” In contrast, reference to “a picnic basket having a single apple” describes “a picnic basket having only one apple.” 
     When used herein to join a list of items, “or” denotes “at least one of the items,” but does not exclude a plurality of items of the list. Thus, reference to “a picnic basket having cheese or crackers” describes “a picnic basket having cheese without crackers,” “a picnic basket having crackers without cheese,” and “a picnic basket having both cheese and crackers.” Finally, when used herein to join a list of items, “and” denotes “all of the items of the list.” Thus, reference to “a picnic basket having cheese and crackers” describes “a picnic basket having cheese, wherein the picnic basket further has crackers,” as well as describes “a picnic basket having crackers, wherein the picnic basket further has cheese.” 
     Referring now to the drawings, in which like numerals represent like components throughout the several views, one or more preferred embodiments of the present invention are next described. The following description of one or more preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. 
       FIG. 1  is a perspective view of a rotary sanding chalk device  113  in accordance with one or more preferred embodiments of the present invention. With suitable modifications for each respective implementation, such a chalk device  113  may be mounted in various motorized drawing vehicles, mechanical devices, and the like, including the vehicles  100 , 200 , 300 , 400 , 500  and handheld devices  600 , 700  described and illustrated herein. The chalk device  113  shown in  FIG. 1  includes a chassis  107  supporting a mounting structure  104  for holding chalk  102 . The rotary sanding chalk device  113  also includes an axle or spindle  105  and a motor  108  attached to the axle  105 . The motor  108  can be an electric motor, internal combustion engine or other motor or engine known by an Ordinary Artisan, or in the industry or art, that may be used for the purposes and system as described herein. The motor  108  includes one or more wires  111 . The wires  111  can be attached to a battery  112  and/or control electronics  110 . 
     The chalk  102  is made of solid material with the material composition being mineral chalk, other mineral sources of calcium carbonate, the mineral gypsum (calcium sulfate), Plaster of Paris or plaster. Chalk  102  can also be made of calcium carbonate and may be made minor amounts of silt and clay. Pigments, such as liquid tempera paints, can be added to the chalk during manufacture to produce chalk  102  in different colors. Various particulates can also be added into the chalk  102  during manufacture such as flint (to produce sparks) or other such substances to produce sound or visual effect when the chalk  102  is rotary sanded. The chalk  102  can be made with any material as known by an Ordinary Artisan, or in the industry or art, that may be used for the purposes and system as described herein. Also shown in  FIG. 1  is a spare piece of chalk  102  which may be used to replace the chalk installed in the chalk device  113  when it has been worn down. 
     As the device  113  is moved around a pavement surface  155  or other surface, and the motor  108  controlling the axle  105  and mounting structure  104  spins the chalk  102 , the chalk  102  is worn down by the rotary sanding action of the pavement surface  155  against the chalk  102 . As the chalk  102  is worn down it renders graphics  150  on the pavement surface  155 . 
       FIG. 2  is perspective rear view of a motorized drawing vehicle  100  with one rotary sanding chalk device  113  mounted to the vehicle  100  in accordance with one or more further preferred embodiments of the present invention. The drawing vehicle  100  is a self-powered vehicle that houses and contains all the elements and components to move and draw graphics  150 . The drawing vehicle  100  includes a chassis  106 . Mounted to the chassis  106  are a rotary sanding chalk device  113 , a battery  112 , a body  116 , and a standard wheel assembly  109  with two standard tires  101  mounted on wheels. Standard tires  101  can be rubber tires, plastic tires, polymer tires, or any such tires which are known by an Ordinary Artisan, or in the industry or art, that may be used for the purposes and system as described herein. Alternatively, wheel assemblies may include solid wheels, of various materials, that do not include separate tires. 
     The motor  108  of the chalk device  113  is connected to the battery  112  and control electronics  110  by wires  111 .  FIG. 2  also shows a remote controller  140  which can be used to communicate to the control electronics  110  via a communications method  120  which might include but is not limited to a transmitter and receiver and can be of any wireless communication method. 
     The drawing vehicle  100  has multiple motors  108  which are all connected to the chassis  106 . Each motor  108  drives either the tires  101  in the wheel assembly  109  or the chalk device  113  separately and independently for various acceleration, speed and direction. 
     As the drawing vehicle  100  moves around the pavement surface  155  or other surface, and the motor  108  controlling the sanding chalk device  113  spins the chalk  102 , the chalk  102  is worn down by the rotary sanding action of the pavement surface  155  against the chalk  102 . As the chalk  102  is worn down it renders graphics  150  on the pavement surface  155 . Because the tires  101  and chalk device  113  are all controlled by separate motors  108 , the drawing vehicle  100  can move in multiple directions drawing graphics  150  in multiple directions. 
       FIG. 3  is a perspective front view of the drawing vehicle  100  shown in  FIG. 2 . 
       FIG. 3  illustrates the chalk  102  of the sanding chalk device  113  being worn down almost to the mounting structure  104 . Once the chalk  102  is worn down, the user can change out the worn-out chalk  102  with a new piece of chalk  102  to allow the drawing vehicle  100  to continue drawing graphics  150 . 
       FIG. 4  is a perspective rear view of a user  260  operating a motorized drawing vehicle  200  with two rotary sanding chalk devices  213  mounted to the vehicle  200  in accordance with one or more further preferred embodiments of the present invention. As with the vehicle  100  of  FIG. 2 , the drawing vehicle  200  is a self-powered vehicle that houses and contains all the elements and components to move and draw graphics  250 . The drawing vehicle  200  includes a chassis  206 . Mounted to the chassis  206  are two rotary sanding chalk devices  213 , a battery (not shown), a body  216 , and one standard wheel assembly  209  with a conventional tire mounted on a wheel. In various embodiments, a drawing vehicle like the vehicles  100 , 200  of  FIGS. 2 and 4  can have one or more standard wheel assemblies and one or more rotary sanding chalk devices  113 , 213  in various configurations. The motors  108  of the chalk devices  213  are connected to the battery  112  and control electronics  110  by wires  111  (not shown in  FIG. 4 ).  FIG. 4  also shows a remote controller  240  which can be used to communicate to the control electronics  110  via a communication method  220  which might include but is not limited to a transmitter and receiver and can be of any wireless communication method. 
     The drawing vehicle  200  has multiple motors  108  which are all carried on or otherwise connected to the chassis  206 . Each motor  108  drives either the wheel assembly  209  or the chalk devices  213  separately and independently for various acceleration, speed and direction. As the drawing vehicle  200  moves around the pavement surface  255 , and the respective motor  108  controlling each sanding chalk device spins its chalk  102 , the chalk  102  is worn down by the rotary sanding action of the pavement surface  255  against the chalk  102 . As the chalk  102  is worn down it renders graphics  250  on the pavement surface  255 . Because the tire and chalk devices  213  are controlled by separate motors  108 , the drawing vehicle  200  can move in multiple directions drawing graphics  250  in multiple directions. 
     In various embodiments, a drawing vehicle  100 , 200  may have two or more chalk devices  113 , 213  and one or more wheel assemblies  109 , 209  in various combinations. Each of the chalk devices  113 , 213  and wheel assemblies  109 , 209  may be controlled by individual motors  108  or one or more of the chalk devices  113 , 213  and wheel assemblies  109 , 209  may be controlled by the same motor  108 . In at least some embodiments, the motors  108  are capable of rotating the pieces of chalk  102  in either direction, thereby providing greater control over the movement of the vehicle  200  through the rotational friction between the chalk  102  and the pavement surface  255 . 
     Various drawing vehicles, including the vehicles  100 , 200 , 400 , 500  of  FIGS. 2-4 and 6-15  may use structural and mechanical components for operation, control and movement of such drawing vehicle. The structural and mechanical components can include such vehicle systems as steering, braking, structural, support, suspension, balance, protection, storage, lighting, sound, controls, and any other such system used by vehicles that are known by an Ordinary Artisan, or in the industry or art, that may be used for the purposes and system as described herein. 
       FIG. 5  is a perspective view of a motorized drawing vehicle  300  utilizing three of the rotary sanding chalk devices  113  of  FIG. 1  in accordance with one or more further preferred embodiments of the present invention. Similar to the vehicle  100  of  FIGS. 2 and 3 , the drawing vehicle  300  of  FIG. 5  is a self-powered vehicle that houses and contains all the elements and components to move and draw graphics  350 . The drawing vehicle  300  includes a chassis  306 . Mounted to the chassis  306  are three rotary sanding chalk devices  113 , a battery (not shown), and a body  316 . In other embodiments, rotary sanding chalk devices  113  of the drawing vehicle  300  may be arranged in various configurations. Also in other embodiments, the drawing vehicle  300  may have more than three rotary sanding chalk devices  113 . The motors  108  of the chalk devices  113  are connected to a battery (not shown) and control electronics (not shown) by wires  111 . 
     The drawing vehicle  300  preferably has multiple motors  108  which are all supported by the chassis  306 . Each motor  308  preferably drives the chalk devices  113  separately and independently for various acceleration, speed and direction. As the drawing vehicle  300  moves around a pavement surface  355 , and the motors  108  controlling the sanding chalk devices  113  spin the pieces of chalk  102 , the pieces of chalk  102  are worn down by the rotary sanding action of the pavement surface  355  against the chalk  102 . As the chalk  102  is worn down, it renders graphics  350  on the pavement surface  355 . Because the chalk devices  113  are all controlled by separate motors  108 , the drawing vehicle  300  can move in multiple directions drawing graphics  350  in multiple directions. In at least some embodiments, the motors  108  are capable of rotating the pieces of chalk  102  in either direction, thereby providing greater control over the movement of the vehicle  300  through the rotational friction between the chalk  102  and the pavement surface  355 . 
       FIG. 6  is a perspective view of a motorized drawing vehicle  400  with one rotary sanding chalk device  413  mounted to the vehicle  400  in accordance with one or more further preferred embodiments of the present invention, while  FIG. 7  is a top view of the motorized drawing vehicle  400  of  FIG. 6 ,  FIG. 8  is a perspective view of the motorized drawing vehicle  400  of  FIG. 6  but without the vehicle body  416 , and  FIG. 9  is a side cross-sectional view of the motorized drawing vehicle  400  of  FIG. 8 . Similar to the previous embodiments, the drawing vehicle  400  is a self-powered vehicle that houses and contains all the elements and components to move and draw graphics  450 . The drawing vehicle  400  includes a chassis  406 . Mounted to the chassis  406  is a rotary sanding chalk device  413 , one or more batteries  412 , a body  416 , one or more sensors  418 , and three standard wheel assembles  409 , which may or may not include separate tires. The chalk spinning motor  408  of the chalk device  413  is connected to the batteries  412  and control electronics  410  by wires (not shown).  FIG. 6  also shows a mobile smart device  470  with a downloaded image  442 . 
     In this embodiment, the rotary spinning chalk device  413  includes a chalk spinning motor  408  which is connected to the batteries  412  and control electronics  410  by wires. The chalk device  413  also includes a chalk feeder  414  and a chalk holder  422 . The chalk device  413  has a support  424  and a support spring  426 . The support spring  426  provides downward forces which keeps the chalk  402  in contact with the pavement surface  455  while the vehicle  400  is rendering graphics on the surface  455 . 
     The drawing vehicle  400  has one or more motors  428  used to control the wheel assemblies  409 . The motors  428  are all connected to the chassis  406 . The chalk spinning motor  408  spins the chalk device  413  independently of the motors  428  that drive the wheel assemblies  409 . These motors  408 , 428  can run separately and independently for various acceleration, speed and direction. 
     As perhaps best shown in  FIG. 9 , the chassis  406  is the support platform for the vehicle and is the structure to which most elements are attached. In the arrangement shown in  FIGS. 6-9 , the chalk device  413  holds and positions the chalk  402  along the centerline of the drawing vehicle  400 . The control electronics  410  provide control and command for the drawing vehicle  400  and communication with the smart device  470  (or in some embodiments, with a remote controller  240 ) which combine to move and/or navigate the drawing vehicle  400  on the pavement or hard surface  455 . As the vehicle  400  moves on the pavement  455 , the chalk device  413  spins the chalk  402  and pushes the spinning chalk  402  onto the pavement  455 , thereby rendering the graphic  450 . 
       FIG. 8  perhaps best illustrates the interior components of the vehicle  400  in one or more further preferred embodiments of the invention, including a detailed view of the chalk device  413 . By using the components, sensors and electronics of the smart device  470 , such as a GPS subsystem, a smart device operating system, and a printing vehicle application  480 , the drawing vehicle  400  is able to move and navigate on the pavement surface  455 , so as to “print” a downloaded image  442  with the chalk  402 . The batteries  412  provide power to the control electronics  410 , sensors  418 , the chalk spinning motor  408  and the other motors  428  of the drawing vehicle  400 . 
     In some embodiments, the position and/or orientation of the chalk device  413  may be adjusted, relative to the rest of the vehicle  400 , to enhance the rendering of the chalk line to a print quality or otherwise improve performance. In this regard,  FIG. 10  is a top view of the motorized drawing vehicle  400  shown in  FIG. 8  but with an angled chalk device  413 , and  FIG. 11  is a front view of the motorized drawing vehicle  400  of  FIG. 10 . In some embodiments, the angle of the chalk  402  may be adjusted by a user  260 . 
     The mobile smart device  470  used with the vehicle  400  of  FIG. 6  and with at least some other embodiments of a vehicle can be a mobile phone, tablet, computer, smart watch (such as an iPhone or Android phone) or other such smart device as known by an Ordinary Artisan, or in the industry or art, that may be used for the purposes and system as described herein to access an image  442  for rendering as a graphic  450  via a motorized drawing vehicle  400 . The smart device  470  can have (but not limited to) sensors and controllers, such as GPS locator, accelerometer, compass, gyroscope, magnetometer, proximity sensor, light sensor, barometer, thermometer and pedometer, which can be used by the drawing vehicle  400  and smart device  470  to control the image drawn on the pavement or other solid surface  455 . The smart device  470  can have internet access capabilities and sensors that can be used to access and download images to a printing vehicle application  480  and control the drawing vehicle  400 . Once an image is downloaded by a user  260  onto the smart device  470 , the user  260  can render or “print” the downloaded image  442  on a pavement surface  455  by utilizing the printing vehicle application  480  on the smart device  470  and communication method  220  which uses the sensors  418  and other elements for transferring data and/or monitoring location. 
     The communication method  220  is the manner in which the smart device  470  communicates with the internet cloud and the drawing vehicle  400 . The remote controller  240  or smart device  470  may have a communication method  220 , 520  that uses a transmitter and receiver and can be of any wireless communication method  220 , 520  or as known by an Ordinary Artisan, or in the industry or art, that may be used for the purposes and system as described herein. The word “cloud” often refers to the internet, and more precisely to data centers full of servers that are connected to the internet. Internet cloud computing is a type of computing that relies on sharing computing resources rather than having local servers or personal devices to handle applications. In internet cloud computing, the word cloud (sometimes referred to as “the cloud”) is used as a metaphor for “the internet,” and the phrase “cloud computing” may be understood as a type of internet-based computing, where different services (such as servers, data storage, image storage, and applications) are provided to, and delivered to mobile smart devices  470  and computers  570  through the internet. 
     As the drawing vehicle  400  moves around the pavement surface  455  and the chalk spinning motor  408  spins the chalk  402 , the chalk  402  is worn down by the rotary sanding action of the pavement surface  455  against the chalk  402 . As the chalk  402  is worn down, it renders graphics  450  on the pavement surface  455 . Because the wheel assemblies  409  and chalk device  413  are all controlled by separate motors  408 , 428 , the drawing vehicle  400  can move in multiple directions drawing graphics  450  in multiple directions to create graphics  450  stored in the printing vehicle application  480 . 
       FIG. 12  is a perspective view of a motorized drawing vehicle  500  together with a plurality of pieces of chalk  402  and a mobile smart device  470 , all in accordance with one or more further preferred embodiments of the present invention. The motorized drawing vehicle  500  includes a chalk device  513  into which the chalk  402  may be loaded. The mobile smart device  470  has a print application  480  for a user  260  to initiate a communication through a Bluetooth® connection  520  or the like. 
       FIG. 13  is a perspective view of the motorized drawing vehicle  500  of  FIG. 12 , shown in operation. As shown in  FIG. 13 , the printing vehicle application  480  has been launched, causing a downloaded image  542  to be displayed on the device  470 . In the exemplary illustration, the image  542  is a maze image, but it will be apparent that a wide variety of images may be used and created.  FIG. 13  also shows the motorized drawing vehicle  500  using the chalk  402  to “print” the downloaded image  542  as a graphic  550  on a pavement surface  555 . 
       FIG. 14  is a perspective view of the motorized drawing vehicle  500  of  FIG. 12  together with a remote controller  240  and a computer  570 , all in accordance with one or more further preferred embodiments of the present invention. The vehicle may include some or all of the elements and features utilized by others of the vehicles described and illustrated herein, such as a chalk feeder  514 , vehicle body  516 , sensors  518 , and the like. As shown in  FIG. 14 , the controller  240  may utilize a print application executable button  544  for launching the vehicle printing application  480  for use by a user  260 , 560 . In this embodiment, the controller  240  accesses images in or via the internet cloud through wireless communication  620  with a computer  570 , which accesses the internet&#39;s cloud-based images. Alternatively, the controller  240  may be operable to access cloud-based images directly, may access images stored on the computer, or the like. The controller  240  is communicating with the motorized drawing vehicle  500  via a communication method  520 , which is shown as radio control communication. Additionally or alternatively, the controller  240  may be plugged into a computer  570  using a standard wired connection such as a USB cable. 
       FIG. 15  is a perspective view of the motorized drawing vehicle  500  of  FIG. 14 , shown in operation. As shown therein, the motorized drawing vehicle  500  has completed drawing or “printing” a hopscotch game image  557 , downloaded from a mobile smart device  470 , on a pavement surface  655  or other surface. Once the image  557  is drawn on the pavement  555 , the user  560  is able to play a game of hopscotch. 
     Elements of control described herein may also be adapted for use in various handheld devices using rotary sanding chalk devices of the type described herein. For example,  FIG. 16  is a perspective view of a handheld rotary sanding chalk device  600  in accordance with one or more further preferred embodiments of the present invention. The handheld rotary sanding chalk device  600  includes guidance alert elements  662 , a chalk spinning motor  608 , control electronics  110  (not shown), an axle or spindle (not shown), one or more sensors  618 , one or more batteries  612 , and a mounting structure  604 . The guidance alert elements  662  can be lights, vibration, sound, or raised tactile buttons or other such devices or elements as known by an Ordinary Artisan, or in the industry or art, that may be used for the purposes and system as described herein. The device  600  holds a piece of chalk  102 . 
       FIG. 17  is a perspective view of the handheld rotary sanding chalk device  600  of  FIG. 16 , shown in operation. The user  660  loads a piece of chalk  102  into the device  600 . A remote controller  240  or mobile device  670  uses a wireless communication method  620  to direct the user  660  drawing with the chalk device  600 . Similar to the embodiment in  FIG. 12 , an application is opened on the mobile device  670  which allows the user to select and download an image or graphic  642 . Once the image  642  is selected, commands are sent to the chalk device  600  through the communication method  620 . For example, as the user presses the chalk device  600  to a hard surface  655 , a forward movement command may be sent to the chalk device  600 . The command is processed by the control electronics  110  and the motor  608  spins the axle  105 , which spins the chalk  102 , and the user  660  moves the device  600  forward the desired distance to create a line  650 . Guidance alerts provided via the guidance alert elements  662  then tell the user which direction to turn the chalk device for the next command. 
       FIG. 18  is a perspective view of a handheld rotary sanding chalk device  700  with three rotary sanding chalk devices  113  mounted to the vehicle  700  in accordance with one or more further preferred embodiments of the present invention. This mechanical drawing vehicle is somewhat similar in form to the motorized drawing vehicle  300  in  FIG. 5 , but includes a handle  719  attached to the body  716  of the vehicle  700 . The mechanical rotary sanding chalk device  700  may be controlled direction/force from the hand of the user  760 , and in some embodiments, in combination with rotational friction from the rotary sanding action of a wall surface  755  or other surface against the chalk  102 . As the chalk  102  is worn down it renders graphics  750  on the surface  755 . 
     In some embodiments of the sanding chalk device  113 , 213 , 413 , the chalk  102 , 402  can also be vibrated with a vibration motor in order to more effectively sand the chalk  102 , 402  on a pavement or other hard surface. Such vibration be accomplished by any mechanical means as known by an Ordinary Artisan, or in the industry or art, that may be used for the purposes and system as described herein. 
     Rotational sanding may also used to apply graphics to a surface by substituting one or more chalk wheel assemblies for conventional wheel assemblies in a vehicle. In this regard,  FIG. 19  is a perspective view of a motorized drawing vehicle  1100  having a plurality of chalk wheel assemblies in accordance with one or more further preferred embodiments of the present invention. As shown therein, this vehicle  1100  includes two chalk wheel assemblies  1113  and two standard wheel assemblies  1109 . Each chalk wheel assembly  1113  includes a chalk tire  1102  mounted on a wheel or other mounting device  1104 . The standard wheel assembly  1109  includes a standard tire mounted on a wheel. Two chalk wheel assemblies  1113  are connected to one axle or axle assembly  1105 , while the two standard wheel assemblies  1109  are connected to another axle or axle assembly. However, in some embodiments the chalk wheel assembly may include a separate axle for each of the mounting devices and chalk tires, and in some embodiments the standard wheel assembly may include a separate axle for each of the wheels and standard tires. 
       FIG. 20  is a rear-cross-sectional view of the drawing vehicle  1100  of  FIG. 19 . The axle  1105  is connected to and being driven by a motor  1108 . The axle  1105  and motor  1108  are attached to a chassis  1106  through structural and mechanical components. The body  1116  of the drawing vehicle  1100  is also attached to the chassis  1106 . 
     The drawing vehicle  1100  shown in  FIG. 19  uses one or more motors  1108  connected to the chassis  1106  to drive the chalk wheel assemblies  1113  for various acceleration, speed and direction. While being sanded and worn down and rendering graphics  1350 , the two ring or torus-shaped chalk tires  1102 , also provide locomotion for the drawing vehicle  1100 . The standard wheel assemblies  1109  may be powered or unpowered. In the arrangement shown in  FIG. 19 , operation of the wheel assemblies  1113 , 1109 , and thus the vehicle, is being controlled by a remote controller  240  to render graphics  1350  on a pavement surface  1355 . The remote controller  240  is in communication with the drawing vehicle  1100  through a communication method  1220 . The method of use of the drawing vehicle  1100  is shown in the flow diagram  5000  of  FIG. 26  (described below). 
       FIG. 23  is a perspective view of one of the chalk wheel assemblies  1113  of  FIGS. 19-21 , and  FIG. 24  is a front cross-sectional view of the chalk wheel assembly  1113  of  FIG. 23 . The chalk tires  1102  are made of solid chalk and are ring- or torus-shaped. However, other tire shapes may be substituted out of necessity or for a particular purpose. In this regard,  FIG. 22  is a rear cross-sectional view of the motorized drawing vehicle  1100  of  FIG. 20  shown using wheel assemblies  2113  wherein semi-conical chalk tires  2103  have been substituted for the ring-shaped chalk tires  1102  of  FIG. 20 . The chalk wheel assembly  1113 , 2113  is semi-permanently mounted to an axle  1105 , which is connected to and being driven by the motor  1108 . In at least some embodiments, each chalk wheel assembly  1113 , 2113  is unitary, wherein the chalk tire  1102 , 2103  is permanently mounted to the wheel or mounting device  1104  during the manufacture process. The method of manufacture for this chalk wheel assembly  1113 , 2113  is shown in the flow diagram  5500  of  FIG. 27  (described below). 
     It will be appreciated that different chalk shapes may be utilized for various purposes. For example, the chalk  102 , 402  shown in  FIGS. 1-18  is a cylinder shape; the chalk  1102  shown in  FIGS. 19-21, 23, and 24  has a ring shape (flat around its periphery) or a torus shape; and the chalk  1103  shown in  FIG. 22  has a semi-conically-shaped “ring.” Chalk of different shapes will produce different effects and line types (for example, thick or thin lines) when rotary sanded on or by a pavement surface. 
     It will be appreciated that the numbers and locations of the chalk wheel assemblies  1113 , 2113  relative to the standard wheel assemblies  1109  may be varied, and in some embodiments the standard wheel assemblies  1109  may be omitted altogether. In this regard,  FIG. 21  is a top perspective view of a motorized drawing vehicle  2100  wherein all of the wheel assemblies are chalk wheel assemblies  1113  in accordance with one or more further preferred embodiments of the present invention. The drawing vehicle  2100  of  FIG. 21  utilizes four chalk wheel assemblies  1113 , all being controlled by a mobile smart device  2270  to render graphics  2350  (based on images displayed and stored on the mobile smart device  2270 ) on a pavement surface  2355 . The smart device  2270  is shown being in communication with the drawing vehicle  2100  through a wireless communication method  2220 . The drawing vehicle  2100  shown in  FIG. 21  uses one or multiple motors  2108  connected to a chassis  2106 , to drive the chalk wheel assemblies  1113  for various acceleration, speed and direction. The drawing vehicle  2100  has a vehicle body  2116  which is the exterior envelope of the drawing vehicle  2100 . While being sanded and worn-down and rendering the graphic  2350 , the four chalk tires  1102  that are installed, also provide locomotion for drawing vehicle  2100 . 
     For the drawing vehicles  1100 , 2100  shown in  FIGS. 19 through 22 , it is understood that the chalk tires  1102 , 2103  will wear down through use. In order to change the chalk tires  1102 , 2103 , a user would remove both the chalk tires  1102 , 2103  and mounting devices  1104  together, since they are one integrated unit. The chalk tire mounting devices  1104  are preferably only semi-permanently mounted on an axle  1105 , so the chalk wheel assembly  1113 , 2113  can be easily removed from the axle  1105  by a user and changed and replaced with a spare or new chalk wheel assembly  1113 , 2113 , when the chalk tire  1102  has been sanded and worn down by locomotion, rotary sanding and drawing. Once a chalk tire  1102 , 2103  is worn down, a wheel  1104  can be removed from an axle  1105  and disposed of. The user may then mount a new chalk wheel assembly  1113 , 2113  on an axle  1105 . The chalk wheel assembly  1113 , 2113  shown in  FIGS. 19-24  preferably includes the mechanical means to be semi-permanently mounted, removed and remounted on the axle  1105  by a user. 
       FIG. 25  is a flow diagram showing one method  4000  of use in accordance with one or more further preferred embodiments of the present invention. In this method  4000 , the user takes chalk  102 , 402 , 502  and installs it in the rotary sanding chalk device(s)  113 , 213 , 413 , 513  of a drawing vehicle  100 , 200 , 400 , 500 . Once chalk  102  has been installed, the user operates a remote controller  140 , 240 , smart device  470 , or the like with a forward movement command, where the remote controller  140 , 240  or smart device  470  communicates the forward movement command to the drawing vehicle  100 , 200 , 400 , 500  through a communication method  120 , 220 , 520 . Once the forward movement command has been received and processed by the control electronics  110 , 410 , a motor  108 , 408  initiates and spins the chalk device  113 , 213 , 413 , 513 . With the rotation of the chalk device  113 , 213 , 413 , 513 , the chalk  102 , 402  provides locomotion and the drawing vehicle  100 , 200 , 400 , 500  moves forward. At the same time the chalk  102 , 402  is rotary sanded against a pavement surface  155 , 255 , 455 , 555  to draw graphics  150 , 250 , 450 , 550 , 650 . This method  4000  of use may be used, for example, for the drawing vehicles  100 , 200 , 400 , 500  of  FIGS. 2-4  and  FIGS. 6-15 . 
       FIG. 26  is a flow diagram showing a second method  5000  of use in accordance with one or more further preferred embodiments of the present invention. In this method  5000 , the user takes the chalk wheel assemblies  1113 , 2113  as shown in  FIGS. 23 and 24  and installs them on an axle  1105  of a vehicle  1100 , 2100 . Once the chalk wheel assemblies  1113 , 2113  have been installed, a user operates a remote controller  240  or smart device  2270  with a forward movement command, where the remote controller  240  or smart device  2270  communicates the forward movement command to the drawing vehicle  1100 , 2100  through a communication method  1220 . Once the forward movement command has been received and processed by the control electronics  110 , a motor  1108  initiates and turns an axle  1105  and the chalk wheel assembly  1113 , 2113 . With the rotation of chalk wheel assembly  1113 , 2113 , the chalk tires  1102 , 1103  provide locomotion and the drawing vehicle  1100 , 2100  moves forward. At the same time the chalk tire  1102 , 1103  is rotary sanded against a pavement surface  1355 , 2355  to draw graphics  1350 , 2350 . This method  5000  of use may be used, for example, for the drawing vehicles  1100 , 2100  of  FIGS. 19-22 . 
       FIG. 27  is a flow diagram showing a method  5500  of manufacture of a chalk wheel assembly  1113 , 2113  in accordance with one or more further preferred embodiments of the present invention. As shown in  FIG. 27 , a chalk wheel assembly  1113 , 2113  is manufactured by the method and process of mold casting and by using chalk slurry to cast a chalk tire  1102 , 2103  in a shape mold directly around a wheel  1104  during manufacture, for permanent mounting of a chalk tire  1102 , 2103  on a wheel  1104 . Once the chalk wheel assembly  1113 , 2113  is cast, it is removed from the casting mold and dried. 
     In this method  5500  of manufacture, a preliminary step is to create chalk slurry by mixing together chalk with water, so the chalk is in a liquid and pourable form. Other ingredients may be added to the chalk slurry, such as pigment coloring and like, pending desired features. The chalk slurry is then poured into a multiple cavity tire mold to cast a chalk wheel assembly  1113 , 2113 . Preferably the tire mold has multiple cavities, where multiple chalk wheel assemblies  1113 , 2113  can be produced. Once the chalk slurry is poured into the multiple cavity tire mold, a wheel  1104  is inserted into each of the chalk slurry filled, tire mold cavities. As an alternate method, a wheel  1104  may be inserted into the tire mold first and then the tire mold filled with the chalk slurry. In either method, a wheel  1104  is encapsulated in chalk slurry in the tire mold. The chalk slurry and wheel  1104  are then dried in the tire mold, and then ejected from the mold, thus producing a cast chalk wheel assembly  1113 , 2113  where a chalk tire  1102 , 1103  is permanently mounted on a wheel  1104 . The chalk wheel assembly  1113 , 2113  may then be additionally dried to the desired hardness. 
       FIG. 28  is a flow diagram showing a method  6000  of use in accordance with one or more further preferred embodiments of the present invention. In this method  6000 , a wireless smart device  470  accesses images in the internet cloud, and then the images are drawn or printed by a drawing vehicle  400 ,  500 . 
     More specifically, in this method  6000 , a user loads or installs chalk  102 , 402  into a rotary sanding chalk device  413 , 513  of a drawing vehicle  400 , 500 . Then the user places the drawing vehicle  400 ,  500  on a pavement surface  455 , 555 . The user then launches the printing vehicle application  480  on a smart device  470  by using the printing vehicle application  480  executable button located on the screen of the smart device  470 . Using the printing vehicle application  480 , the user accesses the internet cloud through the smart device  470  and locates an image on the internet. The user then downloads the internet cloud based image to the smart device  470 . Once the image has been downloaded to the smart device  470 , the user selects the image and sends it to the drawing vehicle  400 , 500  using the printing vehicle application  480 . The drawing vehicle  400 , 500  then engages and draws or prints the downloaded image on the pavement surface  455 , 555  with chalk  102 , 402 . 
       FIG. 29  is a flow diagram showing a method  7000  of use in accordance with one or more further preferred embodiments of the present invention. In this method  7000 , a remote controller  240  is connected to a computer  570  via wireless communication  620 . The computer  570  accesses images in the internet cloud, and then directions are given to the drawing vehicle  400 , 500  from the computer through the remote controller  240  to draw or print the image on pavement or other hard surface similar to method  6000 . 
     Based on the foregoing information, it will be readily understood by those persons skilled in the art that the present invention is susceptible of broad utility and application. Many embodiments and adaptations of the present invention other than those specifically described herein, as well as many variations, modifications, and equivalent arrangements, will be apparent from or reasonably suggested by the present invention and the foregoing descriptions thereof, without departing from the substance or scope of the present invention. 
     Accordingly, while the present invention has been described herein in detail in relation to one or more preferred embodiments, it is to be understood that this disclosure is only illustrative and exemplary of the present invention and is made merely for the purpose of providing a full and enabling disclosure of the invention. The foregoing disclosure is not intended to be construed to limit the present invention or otherwise exclude any such other embodiments, adaptations, variations, modifications or equivalent arrangements; the present invention being limited only by the claims appended hereto and the equivalents thereof.