Abstract:
The present invention relates to a mobility scooter and in particular to a mobility scooter having a base with a platform. The base further has a receiver at the front of the platform, a rear hitch, two risers with vertical holes for receiving chair legs and a rear axle. Two batteries and motors can be further provided. The chair can fold flat to either allow greater movement upon the platform or for storage. Multiple attachments can be provided, including a single wheel, a double wheel and coupler attachments. The attachments easily engage and are disengaged from the base. Several other attachments can also be provided, including side bars, handlebars and a car seat holder. Further, a movable throttle is provided.

Description:
This United States utility patent application claims priority on and the benefit of provisional application 61/925,344 filed Jan. 9, 2014, the entire contents of which are hereby incorporated herein by reference. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a mobility scooter and in particular to a mobility scooter having easily changeable attachments at the front end of the base, that is configurable for tandem use and that has easily removable components for easy storage. 
     2. Description of the Related Art 
     One product, named Liberty Elite Foldable Mobility Scooter is made by R.J. Cox Engineering. 
     Several US Patents are listed below. 
     United States Patent Number (“USPN”) U.S. Pat. No. 2,867,449 to Shawver is titled Hand Cart Adapted for Use with Interchangeable Load Carriers. This patent shows an invention related to a vehicle and more particularly to a vehicular unit especially useful by itself or in association with a propelling unit, and finds particular utility in a vehicular train of relatively small size useful in coping with the care of lawns, gardens and the like as well as in the handling and transporting of materials in plants, shops, etc. 
     U.S. Pat. No. 3,524,512 to Coeks et al. is titled Self-Propelled Driving and Steering Truck for Shopping Carts. This patent describes a self-propelled truck including a rear operators position and front steerable wheel means, the cart including a forward portion adapted to be disposed beneath and to support the rear portion of a shopping cart with the rear wheels of the shopping cart in at least slightly elevated position above the ground whereby the self-propelled truck may be utilized to propel and steer the shopping cart. 
     U.S. Pat. No. 3,575,250 to Dykes is titled Self-Propelled Electric Vehicle and Battery Mount. It describes a self-propelled electric vehicle includes a wheeled frame having a quick connect and disconnect hitch for drivingly connecting the vehicle to a variety of wheeled devices. An individual drive for each of a pair of ground-contacting wheels includes a separate, reversible motor and a power transmission train coupled to each wheel which carries an inturned extension over which a transmission member is trained. The motors are mounted on a pivotal base and yieldingly urged away from the wheels to maintain tension in the power transmission train during rotation of the wheels by the motors. A mount for the quick replacement of a battery on the vehicle with a recharged battery has a carrier member on the battery casing and electrical contacts arranged to removably seat on electrically conductive support members carried by the vehicle which are arranged to form power terminals on the vehicle. 
     U.S. Pat. No. 4,096,920 to Heyn is titled Power Shopping Cart and Trailer. It teaches a self-propelled shopping cart, having a trailer accommodation for transporting a passenger behind the cart, and further comprising a brake feature wherein a tilting trailer is used for automatic drive and brake control. An operator can tilt the trailer to the rear to apply a brake means or forward to engage a drive means. A basket of the cart can be removed and replaced by a seat and back rest through the use of a quick release cam locking device and the trailer can be placed in an upright, stowed position so that the cart may be used in the conventional manual push mode. 
     U.S. Pat. No. 4,771,840 to Keller is titled Articulated Power-Driven Shopping Cart. It shows an articulated shopping cart-tractor unit with a seat is provided for the handicapped. The tractor unit is connected to a conventional shopping cart by a bracket and coupling. 
     U.S. Pat. No. 6,702,313 to Forshee et al. is titled Wheelchair Attachable Shopping Cart. It shows a shopping cart is securely attachable to the foot rest supports of a wheel chair in a manner allowing a person to enter and depart the wheelchair while the cart is attached. Two attachable arms that are moveable horizontally and vertically attached to the each foot rest support in a low position. The horizontally and vertically movement of the attachable arms permit the cart to be attached to different wheelchairs. The attachable arms have ends that are easily attached and detached from the foot rest supports. In one embodiment, the attachment arms have a U-shaped end that fits around the foot rest support and is held in place by a strap, the ends of which may be secured by any one of buckles, snaps and hook and loop fasteners. 
     U.S. Pat. No. 7,093,841 to Conrad is titled Seating/Storage Add-On Section With Holster for Shopping Cart. It has a seating/storage add-on section for use with a shopping cart, having a non-rigid connector for engaging the rear wheels of a shopping cart. In addition, the connector allows relative movement between the add-on section and an attached shopping cart. The shopping cart can be quickly attached to and detached from the add-on section without requiring tools. 
     U.S. Pat. No. 7,207,407 to Huber is titled Quick Disconnect Support Bracket for a wheeled Device. It has a collapsible three wheeled vehicle for personal transportation which has a removable support bracket that secures the distal ends of two independent foldable side rails at either end of the support bracket. The support bracket also provides a mounting base for a passenger seat. The rear support bracket, when removed, allows the side rails to fold together with the steering column for convenient storage. A removable front wheel, a removable seat, and removable steering handles allow the vehicle to further reduce the required amount of space for storage and transport. The vehicle uses a battery operated electric drive motor. A second optional battery power supply may be attached to the vehicle to extend its range. A storage bag is provided to hold the components of the vehicle when not in use. 
     While each of these products may work well for their intended purposes, they each can be improved upon. 
     For example, none show the use of interchangeable front ends. 
     None show a front end receiver of the present invention. 
     None show a chair that folds flat. 
     None show a hooked end configured for multiple heights. 
     None show a movable throttle. 
     None show independent rear drive assemblies that are removably supported on the platform and are connected to independent wheels. 
     Thus there exists a need for a mobility scooter that solves these and other problems. 
     SUMMARY OF THE INVENTION 
     The present invention relates to a mobility scooter and in particular to a mobility scooter having a base with a platform. The base further has a receiver at the front of the platform, a rear hitch, two risers with vertical holes for receiving chair legs and a rear axle. Two batteries and motors can be further provided. The chair can fold flat to either allow greater movement upon the platform or for storage. Multiple attachments can be provided, including a single wheel, a double wheel and coupler attachments. The attachments easily engage and are disengaged from the base. Several other attachments can also be provided, including side bars, handlebars and a car seat holder. Further, a movable throttle is provided. 
     According to one advantage of the present invention, the scooter has a base with a receiver at the front of a platform. The receiver is shaped to receive a connector of one of several attachments. The connection between the connector and the receiver is made without the need for tools. The weight of the scooter advantageously maintains the connection between the scooter and attachment. Since all parts are relatively light, the scooter can be assembled and disassembled by a single person. 
     According to another advantage of the present invention, the scooter has many interchangeable front ends, including a single wheel attachment, a double wheel attachment and a coupler attachment. These three attachments advantageously allow the present invention to be useful in many situations, including (but not limited to) use as a three wheel scooter, use as a four wheel mover, use as a scooter attached to a shopping cart or use in tandem with another scooter. 
     According to a further advantage of the present invention, a chair is provided that is movable both longitudinal and elevationally relative to the platform. This is accomplished in one embodiment by having multiple holes formed in risers on the platform. In this one embodiment, the riser holes are spaced apart and are located in increased heights moving towards the rear of the platform. This advantageously allows taller people more longitudinal and vertical leg room when necessary. 
     According to a further advantage yet of the present invention, the chair has a seat that folds flat. The seat can fold flat during use (to allow the user more room on the platform when standing) or during storage (low profile for being stored in a trunk of a car). 
     According to a still further advantage yet of the present invention, the coupler attachment can have a plurality of hooks that change the effective height of the hook. This advantageously allows the user to easily determined the proper hook for use to maintain the platform as close to level (with the ground) as possible. In a preferred embodiment, the user can easily change between hooks by swiveling a link about a support end. The hook then can be used to rest upon an adjacent structure to link the scooter with the adjacent structure. 
     According to a still further advantage yet of the present invention, multiple scooters can be joined in a tandem fashion. This advantageously allows for companions to each have their own scooter. 
     According to a still further advantage yet of the present invention, the scooter can either include a drive assembly or be used as a push cart. For example, when used as a push cart, the present invention can be useful as a stroller (with a car seat attachment). Straight bars or handle bars can be included and attached to the present invention to aid in operation thereof. 
     According to a still further advantage yet of the present invention has a throttle that is easily movable to multiple positions. For example, the throttle can be used on the bars for left hand or right hand operation (by rotating of the throttle body). The throttle is also positional on the base of the platform for operation by a person&#39;s foot. 
     According to a still further advantage yet of the present invention, independent drive assemblies can be provided. In this regard, the two wheels of the scooter are independently powered and a differential effect is provided when turning the scooter. 
     According to a still further advantage yet of the present invention, mating gears between each drive assemblies and each respective wheel is provided. This allows the drive assemblies to be easily connected to the wheels when properly positioned on the platform. 
     Other advantages, benefits, and features of the present invention will become apparent to those skilled in the art upon reading the detailed description of the invention and studying the drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a side view of an embodiment of the present invention. 
         FIG. 2  is a side view of an alternative embodiment of the present invention. 
         FIG. 3  is a side view of an additional alternative embodiment of the present invention. 
         FIG. 4  is a side view of an additional alternative embodiment of the present invention. 
         FIG. 5  is a top view of the embodiment illustrated in  FIG. 4 . 
         FIG. 6  is a side view of an embodiment of the present invention with a front end attached to a platform. 
         FIG. 7  is similar to  FIG. 6  but shows the front end partially disengaged from the platform. 
         FIG. 8  is similar to  FIGS. 6 and 7 , but shows the front end fully disengaged from the platform. 
         FIG. 9  is a partial top view of the front end of a platform. 
         FIG. 10  is a top view of an attachment. 
         FIG. 11  is a partial side view of a platform. 
         FIG. 12  is a side view of an attachment. 
         FIG. 13  is a side view of a preferred embodiment of the invention showing a chair in three alternative positions. 
         FIG. 14  is an end view of a chair of the present invention. 
         FIG. 15  is a side view of  FIG. 14 . 
         FIG. 16  is a top view of  FIG. 14 . 
         FIG. 17  is an end view of a preferred attachment of the present invention. 
         FIG. 18  is a side view of the embodiment illustrated in  FIG. 17 . 
         FIG. 19  is an end view of an additional preferred attachment of the present invention. 
         FIG. 20  is a side view of the embodiment illustrated in  FIG. 19 . 
         FIG. 21  is a top view of the embodiment illustrated in  FIG. 19 . 
         FIG. 22  is an end view of an additional preferred attachment of the present invention. 
         FIG. 23  is a side view of the embodiment illustrated in  FIG. 22 . 
         FIG. 24  is a top view of the embodiment illustrated in  FIG. 22 . 
         FIG. 25  is a top view of a platform of the present invention. 
         FIG. 26  is an end view of preferred embodiment of a motor of the present invention. 
         FIG. 27  is a top view of the embodiment illustrated in  FIG. 26 . 
         FIG. 28  is a side view of the embodiment illustrated in  FIG. 26 . 
         FIG. 29  is an end view of preferred embodiment of a battery pack of the present invention. 
         FIG. 30  is a side view of the embodiment illustrated in  FIG. 29 . 
         FIG. 31  is a top view of the embodiment illustrated in  FIG. 29 . 
         FIG. 32  is a side view of an embodiment of a throttle in a first position. 
         FIG. 33  is a top view of the embodiment illustrated in  FIG. 32 . 
         FIG. 34  is a side view of an embodiment of a throttle in a second position. 
         FIG. 35  is a top view of the embodiment illustrated in  FIG. 34 . 
         FIG. 36  is a side view of an embodiment of a throttle in a third position. 
         FIG. 37  is a top view of the embodiment illustrated in  FIG. 36 . 
         FIG. 38  is a side view of an embodiment of a side rail attachment in one position with other positions shown in phantom lines. 
         FIG. 39  is a top view of the embodiment illustrated in  FIG. 38 . 
         FIG. 40  is a side view showing an embodiment of a push handle. 
         FIG. 41  is a top view of the embodiment illustrated in  FIG. 40 . 
         FIG. 42  is a side view showing an embodiment of a car seat holder shown with a push handle attachment. 
         FIG. 43  is a top view of the embodiment illustrated in  FIG. 42 . 
         FIG. 44  is a side view of a tandem assembly with the front base having a car seat holder and the rear base having a chair. 
         FIG. 45  is a top view of the embodiment illustrated in  FIG. 44 . 
         FIG. 46  is a side view of an alternative configuration of the present invention. 
         FIG. 47  is a top view of the embodiment illustrated in  FIG. 46 . 
         FIG. 48  is a side view of an alternative configuration of the present invention. 
         FIG. 49  is a top view of the embodiment illustrated in  FIG. 48 . 
         FIG. 50  is a view showing a drive assembly being positioned to mate with a wheel. 
         FIG. 51  is a top view showing the drive assembly mated with a wheel. 
         FIG. 52  is a top view showing a drive assembly mated with a wheel. 
         FIG. 53  is a perspective view of an attachment in an intermediate position relative the base. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     While the invention will be described in connection with one or more preferred embodiments, it will be understood that it is not intended to limit the invention to those embodiments. On the contrary, it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims. 
     Turning now to  FIGS. 1-53 , it is seen that many preferred embodiments of the present invention are shown. While certain features are shown in only limited numbers of figures, it is appreciated that many elements of the present invention are interchangeable. 
     The scooter of the present invention can be used with a cart  10 , such as shopping cart. The cart  10  typically has a body  11  that rests on a frame  12 . The frame  12  typically has a cross bar  13  at the rear of the cart  10 . The present invention is designed for use with carts of many shapes and sizes. One such cart is illustrated below in  FIGS. 48 and 49 . 
     The present invention comprises a scooter  20 . The scooter  20  has a base  30  and an attachment (many attachment embodiments are described herein). The base supports many components as described herein. 
     Turning now to  FIGS. 1-8, 13 and 25 , it is seen that a preferred embodiment of a base  30  is illustrated. The base  30  has a top  31 , a bottom  32 , a first end  33 , a second end  34 , a first side  35  and a second end  36 . The top  31  of the base defines a platform  40 . A gauge  41 , such as an operational status display (power remaining, peak power, drive assembly status, etc.) can be provided on the platform. 
     End  33  of the base preferably has a tapered shape, wherein the sides narrow relative each other adjacent the end  33  of the base. 
     A receiver  50  is located at end  33  of the base  30 , and is illustrated in  FIGS. 9 and 11 . The receiver has a top  51 , a bottom  52 , an end  53 , a second end  54 , a side  55  and a second side  56 . A lip  57  is further provided. The lip  57  is preferably located on the bottom  52  of the receiver at end  54 . It is preferred that the lip be formed of a thin flat plate of rigid material that spans between the sides  55  and  56  at the end  54  of the receiver. A neck  58  is at the front of the end. The neck  58  is formed by a reduction in receiver width at end  53  of the receiver  50 . The receiver  50  is preferably open to the end  33  of the base  30 . 
     A hitch  60  is preferably located at end  34  of the base  30 , as can be seen in  FIGS. 5 and 25 . The hitch  60  has two uprights  61  and  62 . A cross bar  63  spans between the uprights elevated a selected amount from the top of the platform  40 . One preferred height is approximately 3.5 inches from the top of the platform. However, other heights may be used without departing from the broad aspects of the present invention. 
     A riser  70  is provided, and is seen in  FIGS. 1-5, 13 and 25 . Riser  70  has three vertically oriented holes  71 ,  72  and  73  therein. Each hole has a preferred depth of about 3 inches. Hole  72  is approximately 2 inches behind and approximately 1 inch higher than hole  71 . Hole  73  is approximately 2 inches behind and approximately 1 inch higher than hole  72 . In this regard, it is seen that a chair (described below) can be raised and moved rearwardly in discrete intervals. 
     A riser  80  is provided, and is seen in  FIGS. 1-5, 13 and 25 . Riser  80  is located opposite of riser  70 . Riser  80  has three vertically oriented holes  81 ,  82  and  83  therein. Each hole has a preferred depth of about 3 inches. Hole  82  is approximately 2 inches behind and approximately 1 inch higher than hole  81 . Hole  83  is approximately 2 inches behind and approximately 1 inch higher than hole  82 . In this regard, it is seen that a chair (described below) can be raised and moved rearwardly in discrete intervals by revovably placing the bottom of the legs in selected riser holes. The sidewalls of the riser holes securely holds the chair in the vertical position. 
     In this regard, a preferred seating height of between 15 and 17 inches can be provided. 
     An axle  90  is provided at the rear of the scooter. A first wheel  91  with an internal gear  92  is at one end of the axle. A second wheel  93  with an internal gear  94  is at the opposite end of the axle. The gear  94  of the second wheel preferably has mirror image symmetry with gear  92  of wheel  91 . Wheel  91  preferably turns independent of wheel  93 . 
     A drive assembly  100  is provided and is seen in  FIGS. 26 to 28 . The drive assembly has a motor, a chain and an external gear  101 . Gear  101  mates with gear  92  to turn wheel  91 . A second drive assembly  110  is further provided. The second drive assembly preferably has mirror image symmetry with drive assembly  100 . The second drive assembly has a gear  111  that mates with the gear  94  of wheel  93 . The individual drives allow for a differential to be created which is beneficial when turning wherein the wheels turn at different rotational rates.  FIGS. 50 and 51  show the drive assembly  110  being swiveled or rotated to engage the wheel  93 .  FIG. 52  shows the drive assembly  100  engaging wheel  91 . 
     Battery  120  and battery  130  are provided for providing energy to drive assemblies  100  and  110 , respectively. An embodiment of a preferred battery is shown in  FIGS. 29-31 . 
     A throttle  140  is further provided. The throttle  140  has a throttle body  141  and a lever  142 . The lever  142  has sides  143  and  144 . The throttle can be wired to the drive assemblies or wirelessly communicate with the drive assemblies. The throttle can be placed in several positions. 
     Three illustrative positions are shown in  FIGS. 32-37 . In  FIGS. 32 and 33  the throttle is positioned for right handed use. Pulling lever side  143  towards the user will actuate the throttle  140 . The throttle  140  (and bar  250 ) can be rotated about the post  240  as seen in  FIGS. 34 and 35  for left handed use. In this regard, pulling lever side  143  toward the user will actuate the throttle. The throttle can also be placed by the feet of the user as seen in  FIGS. 36 and 37 . In this regard, the user can control the throttle with their feet. It is appreciated that other locations may be used without departing from the broad aspects of the present invention. Also, it is appreciated that alternative throttle structures could be used without departing from the broad aspects of the present invention. 
     A chair  150  is further provided, as seen in  FIGS. 1-5, 13, 14-16 and 48-49 . The chair  150  has a base frame  160  comprising two legs  161  and  162 . A back support  163  spans between the two legs  161  and  162 . A seat frame  170  having a seat  171 , and arm  172  and a support  173  is further provided. The seat frame  170  pivots between a deployed or usable position and a folded or storage position. Support  173  is pivotally connected to both the leg and to the arm  172 . The top of arm  172  contacts the leg when the seat is in the deployed position. The chair is shown in the highest and most rearward position in  FIG. 13 . Two alternative positions are illustrated in  FIG. 13 . Those two alternative positions are successively lower and more forward. 
     A single wheel attachment  200  is further provided, and is shown in  FIGS. 1, 4, 5 , and  17 - 18 . The attachment  200  has a connector  210 , gusset bars  230 , a post  240 , a handle bar  250  a wheel  260 . The handle bar  250  is preferably at the top of the post  240  and the wheel  260  is preferably at the bottom of the post. The gusset bars  230  connect the connector  210  to the post  240 . The handle bar and wheel  260  are preferably rotationally connected wherein turning off the bar causes the wheel to turn. The bar can preferably turn 360 degrees as the shaft turns within the post  240 . The height of the bars are adjustable. 
     Connector  210  has a top  211 , a bottom  212 , and end  213 , a second end  214 , a side  215  and a second side  216 . An extension  217  is at the end  214  of the connector  210 . The extension is at the top of the connector  210 . Two wings,  218  and  219  are provided. The wings  218  and  219  extend from the bottom sides  215  and  216  of the connector. Wings are preferably shaped divergent from each other in the direction from end  213  to end  214 . 
     The connector  210  is removably connectable to receiver  50  of the base  30 . This is accomplished in a manner as illustrated in  FIGS. 6-8 and 53 . The extension  217  (or bar) of connector passes through the receiver and  210  rests upon the lip  57  of the connector, and the wings  218  and  219  engage the bottom  52  of the receiver when the connector is fully mated with the receiver. The contact between the wings and the bottom of the receiver, as well as the contact between the bar and the lip are maintained by the weight of the scooter and any cargo and passengers on the scooter  20 . To remove the attachment  200 , the attachment is rotated so that the contacts herein described cease and the attachment  200  and base  30  are separated. It is seen that the scooter  20  is a three wheeled scooter when the attachment  200  is in place. 
     A double wheel attachment  300  is further provided, and is shown in  FIGS. 3, 13 and 19-21 . The double wheel attachment  300  has a connector  310 , a riser  330 , a cross member  340 , two casters  350  and  351 , respectively, and a bumper  360 . It is noted that the connector  310  is structurally and operationally the same as connector  210  described above in as much as it has the same profile, outer perimeter shape, wings and bar. The riser  330  supports cross member  340 . Wheels  350  and  351  are preferably castors and are located on each end of the cross member. 
     A coupler attachment  400  is further provided, and is shown in  FIGS. 2, 4-5 and 22-24 . The coupler attachment  400  has a connector  410 . The connector  410  is similar to the connector  210  in as much as it has the same profile, outer perimeter shape, wings and bar. Connector  410  further has a hole  420  vertically passing there through. A support  430  having an end  431  with a ring  432  is further provided. Ring  432  maintains the height of the support  430  relative the connector  410 . A fastener  433  is provided to secure the end  431  to the connector  410 . One preferred fastener is a cap and a pin. It is understood that other fasteners may be used without departing from the broad aspects of the present invention. End  431  can rotate upon its axis within hole  420  about axis  434 . 
     The support  430  has a second end  435  having a link  440 . The link has a collar  441  that allows the link  440  to rotate about a collar axis  447  relative the end  435 . A pin  442  is used to rotationally secure the link  440  in the desired position. A first hook  443  and a second hook  444  are provided. The hooks  443  and  444  are offset different distances from the collar  441 . In this regard, the hooks  443  and  444  provide flexibility to connect to adjacent objects having different heights. A gusset  445  provides structural support to hook  444 . It is appreciated that while two hooks are illustrated, that additional hooks could be provided or an adjustable hook can be provided without departing from the broad aspects of the present invention. 
     It is preferred that axis  434  is generally perpendicular to axis  447 , as seen best in  FIG. 23 . 
     Now looking to  FIGS. 38 and 39 , it is seen that a straight bar  500  is provided. The straight bar  500  has a clamp  501  and handles  502 . Straight bar is illustrated as being attached to one side of a seat. It is shown in phantom lines as alternatively being connected to the other side of the seat, to the front of a double wheel attachment, and to the top of the back support of the seat. 
     Now looking at  FIGS. 40 and 41 , it is seen that a handlebar  550  is illustrated as being attached to the top of the seat back support. In this embodiment, the scooter  20  can be unpowered by drive assemblies and instead can be pushed by a person. 
     Now looking a  FIGS. 42 and 43 , it is seen that a car seat holder  600  is provided. The car seat holder  600  has a base frame  610 , a seat frame  620  and a car seat  630 . The base frame  610  is preferably similar to that of chair  150 , and can be removably positioned in the selected riser holes. 
     Several tandem configurations are illustrated in  FIGS. 4-5, 44-45 and 46-47 . 
     In  FIGS. 4-5  the front scooter  20  has a single wheel attachment  200  and the rear scooter  20 A has a coupler attachment  400 A. Both the front and the rear scooters have seats. The front scooter is set up to drive, as it has a throttle and drive assemblies. 
     In  FIGS. 44-45 , the front scooter is set up with a car seat holder  600 . The rear scooter has a chair, and is adapted to being driven and controlled via throttle  140 A. 
     In  FIGS. 46-47 , the front scooter has a double wheel attachment and the rear scooter has a coupler attachment. A handle bar in on the front scooter. The rear scooter  20 A is set up to be driven and controlled via throttle  140 A 
     In  FIGS. 48-49 , the scooter  20  is shown connected to a shopping cart  10 . In this regard, the appropriate hook  444  is selected and is mated with the cross bar  13  of the cart  10 . The user can then use the scooter  20  to push the cart  10  and the scooter  20 . The seat is illustrated in the storage position allowing the user to stand on the platform  40 . Further, the seat is shown received within hole  71  of riser resulting is a preferred height of 15 inches. The seat height can be increased (and distance to the front of the scooter increased) be selecting a different hole in the riser. 
     Thus it is apparent that there has been provided, in accordance with the invention, mobility scooter that fully satisfies the objects, aims and advantages as set forth above. While the invention has been described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations as fall within the spirit and broad scope of the appended claims.