Abstract:
A collapsible tricycle having linkage to all three wheels enabling a smaller turning radius when all three wheels are tilted during a turn. The tricycle folds through the rear frame having a hinged rear axle with linkage to pivotal handle bars mounted to the rear frame that when pivoted from their storage position to their operative position also pivots the rear axle through said linkage from its stored position under the rear frame into its operative position. The rear axle is segmented so that when moved to its stored position under the rear frame each of the rear wheels can be pivotally collapsed against the frame.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    Field of the Invention 
         [0002]    The present invention relates generally to land vehicles and, more specifically, to a collapsible tricycle having a front frame portion and a rear frame portion with the front frame having linkage to all three wheels enabling a smaller turning radius when all three wheels are tilted during a turn. 
         [0003]    Furthermore, the tricycle folds to a smaller footprint through the rear frame having a hinged rear axle with linkage to a pair of pivotal handle bars mounted to the rear frame that when pivoted from their storage position to their operative position also pivots the rear axle through said linkage from its stored position under the rear frame into its deployed operative position. 
         [0004]    The rear axle is segmented so that when moved to its stored position under the rear frame each of the rear wheels can be pivotally collapsed against the frame. 
         [0005]    The rear axle comprises a stationary subjacent axle portion and a movable superjacent axle portion with each hinged at their distal ends to a left and right rear wheel bracket with each bracket having an exteriorly extending spindle with a wheel mounted thereon. The wheel bracket has a top end and a bottom end connected to a respective superjacent movable portion and a bottom stationary portion with each wheel spindle positioned between the bracket&#39;s axle connections so that linear movement of the superjacent axle portion relative to the stationary subjacent axle portion causes the rear wheels to tilt in tandem. 
         [0006]    The tricycle also provides adjustable linkage for moving the pedal assembly for either foot or hand power. 
         [0007]    Furthermore, the collapsible tricycle provides a segmented front frame comprising a curvilinear rail-like segment and seat support segment fastened to the curvilinear rail-like segment where by pivoting the seat support segment causes a corresponding rotation of the curvilinear rail-like segment. Also provided is a seat adjustably attachable within a transverse slot in the seat support so that an operator steers the tricycle by shifting their weight causing the steering rail segment and curvilinear rail-like segment to pivot along with tilting the rear wheels in tandem. In operation, left movement of the seat results in a right turn of the front wheel with corresponding rear wheel camber and a right movement of the seat results in a left turn of the front wheel with corresponding rear wheel camber. 
         [0008]    Description of the Prior Art 
         [0009]    There are other land vehicles which provide for operator steering by shifting their weight. While these land vehicles may be suitable for the purposes for which they where designed, they would not be as suitable for the purposes of the present invention as heretofore described. 
         [0010]    It is thus desirable to provide a tricycle having a seat support serving as steering rail with linkage extending to a rear axle superjacent movable axle portion so that when the seat support steering rail is moved to the left the front wheel turns to the right the superjacent rear axle movable portion tilts the rear wheel to the right and visa-versa when the operator moves the steering rail to the right thereby creating a smaller turning radius for said tricycle. 
         [0011]    It is further desirable to provide a collapsible tricycle having linkage for moving the handles bars from a stored frame coplanar position to an operator selective tangential position with said handle bars having linkage to the tricycle rear axle which moves in tandem from a folded stored position to a deployed operative position. 
       SUMMARY OF THE PRESENT INVENTION 
       [0012]    A primary object of the present invention is to provide a collapsible tricycle having linkage for moving the handles bars from a stored frame coplanar position to an operator selective tangential position with said handle bars having linkage to the tricycle rear axle which moves in tandem from a folded stored position to a deployed operative position. 
         [0013]    Another object of the present invention is to provide a collapsible tricycle having a front wheel frame and a rear wheels frame with said front wheels frame pivotally attached to said rear frame. 
         [0014]    Yet another object of the present invention is to provide a collapsible tricycle wherein said front wheel frame segment comprises a curvilinear rail-like segment and seat support steering rail segment fastened to said curvilinear rail-like segment. 
         [0015]    Still yet another object of the present invention is to provide a collapsible tricycle wherein said curvilinear rail-like segment has a pedal assembly mount selectively positionable and latchable to said curvilinear rail-like segment. 
         [0016]    An additional object of the present invention is to provide a collapsible tricycle wherein said curvilinear rail-like segment further provides a spindle projecting tangently from the rear distal end providing mount for said seat support steering rail segment. 
         [0017]    A further object of the present invention is to provide a collapsible tricycle wherein said seat support steering rail segment comprises a bar-like structure having a longitudinal portion extending into an obtuse angular portion wherein said longitudinal portion has a transverse slot for mounting a seat therein. 
         [0018]    A yet further object of the present invention is to provide a collapsible tricycle wherein said seat support steering-rail segment obtuse-angular portion terminates in a fastenable clamp whereby said seat support steering rail segment mounts to the spindle of the curvilinear frame segment. 
         [0019]    A still yet further object of the present invention is to provide a collapsible tricycle wherein said seat support steering-rail segment further provides linkage extending approximately from the steering wheel segment dog leg through a rear frame rotative steering linkage post then fastened to the movable superjacent rear axle portion causing the superjacent axle portion to move linearly relative to its stationary subjacent axle portion. 
         [0020]    Another object of the present invention is to provide a collapsible tricycle having linkage means for varying the position of the guide wheel and pedal assembly mount. 
         [0021]    Yet another object of the present invention is to provide a collapsible tricycle having means for adjusting the back rest of the seat in a vertical movement. 
         [0022]    Still yet another object of the present invention is to provide a collapsible tricycle having means for adjusting the inclination of the back rest of the seat. 
         [0023]    An additional object of the present invention is to provide a collapsible tricycle where the pedal assembly can be positioned whereby the rider can use their hands to power the vehicle. 
         [0024]    A further object of the present invention is to provide a collapsible tricycle where the front wheel can be moved closer to or further from the rear axle. 
         [0025]    A yet further object of the present invention is to provide a collapsible tricycle where the rider can steer the guide wheel by means of the seat by shifting their weight left and right. 
         [0026]    Additional objects of the present invention will appear as the description proceeds. 
         [0027]    The present invention overcomes the shortcomings of the prior art by providing a collapsible tricycle having a front wheel frame and a rear wheels frame with the front wheel frame having linkage to all three wheels enabling a smaller turning radius when all three wheels are tilted during a turn. The tricycle folds to a smaller footprint through the rear frame having a hinged rear axle with linkage to a pair of pivotal handle bars mounted to the rear frame that when extended from their storage position to their operative position also pivots the rear axle through said linkage from its stored position under the rear frame into its deployed operative position. The rear axle is segmented so that when moved to its stored position under the rear frame each of the rear wheels can be collapsed against the frame. 
         [0028]    The foregoing and other objects and advantages will appear from the description to follow. In the description reference is made to the accompanying drawing, which forms a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. These embodiments will be described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and that structural changes may be made without departing from the scope of the invention. In the accompanying drawing, like reference characters designate the same or similar parts throughout the several views. 
         [0029]    The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is best defined by the appended claims. 
       DESCRIPTION OF THE REFERENCED NUMERALS 
       [0030]    Turning now descriptively to the drawings, in which similar reference characters denote similar elements throughout the several views, the Figures illustrate the Foldable Tricycle of the present invention. With regard to the reference numerals used, the following numbering is used throughout the various drawing figures.
     10  Foldable Tricycle of the present invention     12  user     14  frame     16  front wheel frame of  14       17  pedal assembly of  16       18  pedal assembly mount of  17       20  mount lock of  17       22  sprocket of  17       24  chain of  17       26  chain guides of  17       28  cranks of  17       32  pedals of  17       34  shock absorbers/suspension fork of  17       36  front wheel     38  cogset of  36       40  derailleur of  36       42  motor of  36       44  seat assembly spindle of  16       46  seat assembly of  16       48  seat support/steering rail segment of  16       50  seat of  48       52  steering linkage fastener of  48       54  steering linkage rail     56  rear wheels frame of  14       58  spindle bearing of  56       60  pivotal axle hinge of  56       62  rear axle of  56       64  rotative steering linkage post of  56       66  rail guide channel of  64       68  superjacent axle rail bracket     70  axle tether rail     72  pivot fastener of  70       74  handle bar bushing of  56       76  subjacent axle portion     78  hinged section of  76       80  spacers of  76       82  springs of  76       84  pivotal strut sections of  76       86  superjacent axle portion     88  hinged section of  86       92  pivotal strut sections of  86       94  rear wheels     96  bracket of  94       98  upper fastener apertures of  96       100  fastener of  98       102  lower fastener apertures of  96       104  fastener of  102       106  handlebar shaft in  74       108  handlebar pivot linkage of  106       110  pivot of  108       112  handle bar lock of  110       114  handlebar bar fastener     116  handlebar     118  handlebar grip/controls     120  axle extension linkage     122  axle extension strut of  120       124  struts shaft of  122       126  pivot strut of  120       128  strut pivot of  126       130  axle pivot of  126       132  latch of  120       134  shaft of  132       136  pivot of  134       138  pivotal bar of  132       140  pivot of  134 ,  138       142  open/closed stop cavity of  134       144  handle of  138       146  spring of  134       148  shock absorber of  86       150  pivot of  148       152  disc brake     154  cables of  152     P pressure   
 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWING FIGURES 
         [0104]    In order that the invention may be more fully understood, it will now be described, by way of example, with reference to the accompanying drawing in which: 
           [0105]      FIG. 1  is an illustrative view of the collapsible tricycle of the present invention. 
           [0106]      FIG. 2  is a side view of the collapsible tricycle present invention. 
           [0107]      FIG. 3  is a top deployed view of the tricycle present invention. 
           [0108]      FIG. 4  is a top collapsed view of the tricycle present invention. 
           [0109]      FIG. 5  is a top view of the tricycle in a left turn. 
           [0110]      FIG. 5A  is a partial rear view of the tricycle in a left turn. 
           [0111]      FIG. 6  is a top view of the tricycle in a right turn. 
           [0112]      FIG. 6A  is a partial rear view of the tricycle in a right turn. 
           [0113]      FIG. 7  is a perspective view of the tricycle with the seat and seat latching exploded. 
           [0114]      FIG. 8  is a partial enlarged view, taken from  FIG. 7  as indicated showing the axle extension linkage. 
           [0115]      FIG. 9  is an illustrated view of the hinged rear axle folded beneath the rear wheels frame. 
           [0116]      FIG. 10  is a partial enlarged view, taken from  FIG. 9  as indicated, showing the axle extension linkage in a folded state. 
           [0117]      FIG. 11  is an illustrated view of the hinged rear axle folded beneath the rear wheels frame with the wheels in dashed line. 
           [0118]      FIG. 12  is an illustrated view of the tricycle of the present invention in the folded storage state. 
           [0119]      FIG. 13A  is a partial side view of the tricycle pedal assembly incorporating movable chain guides. 
           [0120]      FIG. 13B  is a side view of the tricycle with movable pedal assembly incorporating movable chain guides. 
           [0121]      FIG. 13C  is a side view of the pedal assembly having chain guides. 
           [0122]      FIG. 13D  is a front view of the pedal assembly having chain guides. 
           [0123]      FIG. 14  is a side view of the tricycle of the present invention having chain guides in use. 
           [0124]      FIG. 15A  is a side view of pedal assembly incorporating chain guides and pedal assembly post. 
           [0125]      FIG. 15B  is a side view of the pedal assembly having chain guides and pedal assembly post. 
           [0126]      FIG. 15C  is a front view of the pedal assembly having chain guides and pedal assembly post. 
           [0127]      FIG. 16  is a side view of the tricycle of the present invention having chain guides and post in hand use. 
           [0128]      FIG. 17A  is a side view of pedal assembly incorporating chain guides and slidable pedal assembly. 
           [0129]      FIG. 17B  is a side view of the slidable pedal assembly incorporating chain guides. 
           [0130]      FIG. 17C  is a front view of the pedal assembly having chain guides and slidable pedal assembly. 
           [0131]      FIG. 18  is a partial front view of the slidable pedal assembly mounted onto the front frame of the tricycle of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0132]    The following discussion describes in detail one embodiment of the invention (and several variations of that embodiment). This discussion should not be construed, however, as limiting the invention to those particular embodiments, practitioners skilled in the art will recognize numerous other embodiments as well. For definition of the complete scope of the invention, the reader is directed to appended claims. 
         [0133]    Referring to  FIG. 1 , shown is an illustrative view of the tricycle of the present invention. The present invention is a foldable tricycle  10  having a split frame  14  comprising a front wheel frame  16  and a rear wheels frame  60  having a pivotal rear axle  62  comprising a subjacent axle portion  76  and superjacent axle portion  86  that moves linearly left/right relative to the subjacent axle portion  74  through the user pivotally moving the tricycle seat  50  by leaning left whereupon the front wheel turns to the right in tandem seat linkage to the superjacent axle portion  86  tilts the rear wheels in the same direction as the front wheel and by leaning right the front wheel turns to the left in tandem seat linkage to the superjacent axle portion  86  tilts the rear wheels in the same direction as the front wheel. Also shown is pedal assembly  17  slidably mounted onto the front wheel frame  16 . 
         [0134]    Referring to  FIG. 2 , shown is a side view of the present invention. The foldable tricycle  10  of the present invention has a front wheel frame  16  with a slideable pedal assembly bracket  18  mounted approximate one end and seat assembly mounting spindle  44  approximate the other end of frame  16 . Rear wheel frame  56  provides bearing  58  mounted onto spindle  44  providing a rotative front wheel frame  16 . Seat assembly  46  comprises seat support  48  that is mounted onto spindle  44  and seat  50  that is mounted onto and selectively positionable on seat support  48 . 
         [0135]    Referring to  FIG. 3  and  FIG. 4 , respectively shown is a top view of the tricycle of the present invention in a deployed operative position and a top view of the tricycle in a folded storage position. The foldable tricycle  10  of the present invention comprises frame  14  having a front wheel frame  16  and a rear wheel frame  56  with a rear axle  62  comprising a superjacent axle portion  86 , subjacent axle portion  76  and axle extension linkage  120  that deploys and folds the rear axle  62  beneath the rear wheel frame  56  via linkage  108 . 
         [0136]    In  FIG. 3 , handlebar pivot linkage  108  has fastener  114  that receives handle bar  116 , forming a somewhat right angle with fastener  114 , on one distal end and on the other end pivot joint  110  is fixedly attached to handlebar shaft  106  with handlebar lock  112 , shown in dashed line for clarity, to fixedly position the handlebars  116  in a user desired operative location. 
         [0137]    Handlebar  116  that is rigidly attached via fastener  114  to handlebar pivot linkage  108  has two operative states. In a folded state, shown in  FIG. 4 , respective handlebars  116  extend in co-planar fashion toward the tricycle front with the hinged axle lying under the rear wheel frame  56  with tether rail  70  extended. 
         [0138]    Several linkages are provided for controlling the deployment and retraction of the rear axle  62 . Rear axle  62  is pivotally attached to rear wheels frame  56  by hinge  60 . Frame  56  also has bushing  74  with handlebar shaft  106  therein. Attached to shaft  106  is axle extension linkage  120  comprising fixedly attached axle extension struts  122 , struts shaft  124  fixedly attached to a respective strut  122  and pivot struts  126  pivotally attached to a respective subjacent pivotal strut  84  through axle pivot  130 , shown in  FIG. 4 , at one end and having strut pivot  128  on the other end. 
         [0139]    Rear frame  56  also provides superjacent axle rail bracket  68  having pivot fastener  72  attached to axle tether rail  70 , which is extended when the bike axle is in the folded state, shown in  FIG. 4 . A subjacent steering linkage rail  54 , which is part of the steering linkage extending from steering linkage fastener  52  fixedly attached to seat support  48 , through the rail guide channel  66  of rotative steering linkage post  64  then fastened to superjacent axle rail bracket  68 , has longitudinal tracks with the tether rail  70  having mating channels so that in an operative state the rails matingly overlay serving to move the superjacent axle portion  86  relative to the subjacent axle portion  76  either left or right by the user leaning and thereby moving the seat support  48  in the desired direction. 
         [0140]    The split rail then serves two functions; when overlaying each other the rails mate and are used to steer the bike, when folded the mating rails—tracks and channels—keep the steering mechanism rails aligned and aid in guiding the tether rail when moving rear axle  62  to a deployed position. 
         [0141]    The second handlebar operative state (deployed position) is to deploy the rear axle  62  using the handlebars and attached axle extension linkage  120 . 
         [0142]    As aforementioned, the handlebars  116  are collapsed longitudinally against the bike in the folded state with the rear axle  62  folded under the rear frame and tether rail  70  extended. 
         [0143]    Handlebars  116  and pivot linkages  108  provide torque in rotating handlebar shaft  106  and fixedly attached struts  122  and strut shaft  124  driving to a deployed position pivot struts  126  fastened to a respective subjacent strut  84  through axle pivot  130 , shown in  FIG. 4 . Concurrently, hinged section  78  of subjacent axle portion  76  is pivotally driven to a deployed state through pivotal axle hinge  60  pivotally attached to rear frame  56 . Simultaneously, the tether rail  70  in its extended position having one end within rail guide channel  66  and its channels engaging the tracks of steering rail  54  is driven by rail bracket  68  fastener  72  attached to hinged section  88  of superjacent axle portion  86  to overlay rail  54  wherethen the bike is deployed to its operative state, as shown in  FIG. 3 . 
         [0144]    Further provided is steering linkage latch  132  holding the steering linkage  120  in either a folded position or a deployed operative position comprising shaft  134  attached to rear frame  56  by pivot  136 , pivot bar  138  having handle  144  and pivot  140 . Handle  144  pivots the pivot bar raising shaft  134  having respective open/closed stop cavities  142 , that latch onto the axle extension strut  122  in a respective cavity of shaft  134  when the tricycle is in a folded state or a deployed operative state. Extension strut  122  also provides a tension spring  146  that will return strut  122  to a seated position when handle  144  is released. As a safety feature, since the handlebars can be pivoted inward then moved forward and downward, which can fold the rear axle and extend the tether rail, the latching locks the axle extension linkage  120  in either a deployed or folded position. 
         [0145]    Rear axle  62  comprises superjacent axle portion  86  and subjacent axle portion  76  with each having respective hinged portions  78 ,  88  and distal end struts  84 ,  92 , shown clearly in  FIG. 4 . Positioned within the opposing hinged strut sections  78 ,  88  are a pair of pivotal spacers,  80  and springs  82  enabling the superjacent hinged portion  88  to longitudinally move left or right over the subjacent hinged portion  78 . Shock absorbers  148  are pivotally attached  150  to distal ends of superjacent hinge section  88  and fixedly attached to a respective strut  92 . Superjacent struts  92  are attached to the top end apertures  102  of wheel bracket  96  by fasteners  104  and subjacent struts  84  are attached to the bottom end apertures  98  by fasteners  100 . Wheel brackets  96  are rigidly attached to respective wheels  94  so that simultaneously wheel camber is produced by longitudinal movement of the superjacent hinged section  88  through a respective strut  92  tilting a wheel either left or right. 
         [0146]    Also shown are wheels  94  having disk brakes  152  and brake cables  154 , which extend (not shown) to handlebar controls  118 . Further illustrated is pedal assembly mount  18  slidably mounted onto front wheel frame  16  having mount lock  20  for selectively fastening  18  at a desired location. 
         [0147]    Referring to  FIG. 5  and  FIG. 5A , depicted is a top view of the tricycle in a left turn and a back view of the rear axle&#39;s position.  FIG. 5  illustrates the tricycle  10  having a front wheel frame  16  having seat assembly  46  with seat support  48  mounted to spindle  44  and a rear wheels frame  56  having rear axle  62  with a subjacent axle portion  76  and a superjacent axle portion  86  that linearly moves relative to the subjacent axle portion  76  through linkage extending from seat support  48  through rear frame rotative linkage post  64  to superjacent axle  84  depicted in  FIG. 5A . 
         [0148]    Referring to  FIG. 6  and  FIG. 6A , depicted is a top view of the tricycle in a right turn and a back view of the rear axle&#39;s position.  FIG. 6  illustrates the tricycle  10  having a front wheel frame  16  having seat assembly  46  with seat support  48  mounted to spindle  44  and a rear wheels frame  56  having rear axle  62  with a subjacent axle portion  76  and a superjacent axle portion  86  that linearly moves relative to the subjacent axle portion  76  through linkage extending from seat support  48  through rear frame rotative linkage post  64  to superjacent axle  86  depicted in  FIG. 6A . 
         [0149]    Referring to  FIG. 7 , shown is a perspective view of the tricycle of the present invention. Illustrated is the tricycle  10  having a seat support  48  mounted on spindle  44  of front wheel frame  16 . Seat assembly  46  comprises seat support  48  forming mount for seat  50  and steering linkage fastener  52  so that when seat support  48  is moved in one direction the steering linkage extending through linkage post  64  of rear wheel frame  56  moves superjacent axle  84  in the opposite direction, which then tilts the rear wheels  94  via wheel bracket  96  in the same direction as the front wheel  36 . 
         [0150]    Referring to  FIG. 8 , depicted is a partial enlarged view, taken from  FIG. 7  as indicated, showing the axle extension linkage. The axle extension linkage  120  has a pair of extension struts  122  and pivot struts  126  with the extension struts fixedly attached to pivotal handlebar shaft  106  and pivot struts having pivots on each distal end. Strut pivot  128  links strut  122  with strut  126  and axle pivot  130  attached to a respective subjacent strut  84 . To collapse the bicycle to a folded state the handle bar lock  112  is unlatched allowing the handlebars  116  to be pivoted inward through pivot  110  of pivot linkage  108 . Once pivoted the handlebars  116  and pivot linkage  108  are substantially perpendicular to handlebar shaft  106  providing optional torque in folding the rear axle  62  under rear frame  56  through the axle extension linkage  120 . 
         [0151]    Referring to  FIG. 9 , illustrated is the hinged rear axle folded beneath the rear wheels frame. Several linkages are provided for controlling the deployment and retraction of the rear axle  62 . Rear axle  62  is pivotally attached to rear wheels frame  56  by hinge  60 . To collapse the bicycle to a folded state the handle bar lock  112  is unlatched allowing the handlebars  116  to be pivoted inward through pivot  110  of pivot linkage  108 . Once pivoted the handlebars  116  and pivot linkage  108  are substantially perpendicular to handlebar shaft  106  providing optional torque in folding the rear axle  62  under rear frame  56  by pushing the handlebars  116  down thereby rotating handlebar shaft  106  and fixedly attached axle extension strut  122  pivoting pivot strut  126  having pivot  128 . Pivot strut  126  having pivot  128  attached to strut  122  is also pivotally attached to subjacent pivotal strut section  84 , which then pivots rear axle  62  beneath the rear wheels frame  56 . 
         [0152]    Referring to  FIG. 10 , depicted is a partial enlarged view, taken from  FIG. 9  as indicated, showing the axle extension linkage in a folded state. The axle extension linkage  120  has a pair of extension struts  122  and pivot struts  126  with the extension struts fixedly attached to pivotal handlebar shaft  106  and pivot struts having pivots on each distal end. Strut pivot  128  links strut  122  with strut  126  and axle pivot  130  attached to a respective subjacent strut  84 . To collapse the bicycle to a folded state the handle bar lock  112  is unlatched allowing the handlebars  116  to be pivoted inward through pivot  110  of pivot linkage  108 , which is then substantially perpendicular to handlebar shaft  106  with the handlebars  116  at a substantial right angle to shaft  106  wherethen handlebars  116  are used to produce torque in moving the tricycle rear axle  62  beneath rear wheels frame  56 . 
         [0153]    Referring to  FIG. 11 , shown is the rear axle folded beneath the rear wheels frame. Once the rear axle  62  has been folded beneath the rear wheels frame  56 , inward pressure applied to wheels  94 , shown in dashed line, pivots the superjacent and subjacent pivotal strut sections  84 ,  92  against the folded tricycle  10 . The pivotal strut sections,  84 ,  92  are pivotally attached to a respective hinged section  76 ,  86  with the respective wheel bracket  96  providing apertures  98  and fasteners  100  that pivotally fastens subjacent pivotal struts  84  to said wheel bracket and providing apertures  102  and fasteners  104  that pivotally fastens superjacent pivotal struts  92  to said wheel bracket. 
         [0154]    Referring to  FIG. 12 , shown is the rear axle folded beneath the rear wheels frame. Once the rear axle  62  has been folded beneath the rear wheels frame  56 , inward pressure applied to wheels  94 , pivots the superjacent and subjacent pivotal strut sections  84 ,  92  against the folded tricycle  10 . The pivotal strut sections,  84 ,  92  are pivotally attached to a respective hinged section  76 ,  86  with the respective wheel bracket  96  providing apertures  98  and fasteners  100  that pivotally fastens subjacent pivotal struts  84  to said wheel bracket and providing apertures  102  and fasteners  104  that pivotally fastens superjacent pivotal struts  92  to said wheel bracket. 
         [0155]    Referring to  FIG. 13A through 13D , shown is a side view of the tricycle of the present invention having a slidable pedal assembly and side and front views of the pedal assembly.  FIG. 13A  is a side view of the tricycle front end having front wheel frame  16  with a slideable pedal assembly bracket  18  thereon with chain guides  26  mounted thereto. Also shown are sprocket  22 , crank  28  and pedals  32 . Front frame  16  has shock absorbers  34  fastened to the front wheel spindle having cogset  38 , wheel  36 , motor  42  and derailleur  40  mounted thereon.  FIG. 13B  shows the foldable tricycle  10  of the present invention having a front wheel frame  16  with a slideable pedal assembly bracket  18  mounted on the tricycle front frame portion  16  and seat support  48  mounted onto the front frame spindle  44 . Rear wheel frame  56  provides bearing  58  mounted onto spindle  44  providing a rotative front wheel frame  16 . Seat assembly  46  comprises seat support  48  that is mounted onto spindle  44  and seat  50  that is mounted onto and selectively positionable on seat support  48 .  FIG. 13C  shows a side view of the pedal assembly and  FIG. 13D  shows a front view of the pedal assembly comprising pedal assembly mount  18  having mount lock  20 , and chain guides  26 , with sprocket  22 , crank  28  and pedals  32 . 
         [0156]    Referring to  FIG. 14 , shown is a side view of the tricycle of the present invention having a slidable pedal assembly in use. The foldable tricycle  10  of the present invention having a front wheel frame  16  with a slideable pedal assembly bracket  18  mounted on the tricycle front frame portion  16  and seat support  48  mounted onto the front frame spindle  44 . Rear wheel frame  56  provides bearing  58  mounted onto spindle  44  providing a rotative front wheel frame  16 . Seat assembly  46  comprises seat support  48  that is mounted onto spindle  44  and seat  50  that is mounted onto and selectively positionable on seat support  48 . The slidable pedal assembly  17  comprises pedal assembly mount  18  having mount lock  20 , and chain guides  26 , with sprocket  22 , crank  28  and pedals  32 . 
         [0157]    Referring to  FIG. 15A through 15C , shown is a side view of the tricycle of the present invention having a slidable pedal assembly and side and front views of the pedal assembly.  FIG. 15A  shows the foldable tricycle  10  of the present invention having a front wheel frame  16  with a slideable pedal assembly bracket  18  mounted on the tricycle front frame portion  16  and seat support  48  mounted onto the front frame spindle  44 . Rear wheel frame  56  provides bearing  58  mounted onto spindle  44  providing a rotative front wheel frame  16 . Seat assembly  46  comprises seat support  48  that is mounted onto spindle  44  and seat  50  that is mounted onto and selectively positionable on seat support  48 .  FIG. 15B  shows a side view of the pedal assembly and  FIG. 15C  shows a front view of the pedal assembly comprising pedal assembly mount  18  having mount lock  20 , and chain guides  26 , with sprocket  22 , crank  28  and pedals  32  enabling the user to adjust the distance between the pedal assembly and their arm length. 
         [0158]    Referring to  FIG. 16 , shown is a side view of the tricycle of the present invention having chain guides and post in hand use. Shown is the foldable tricycle  10  of the present invention having a front wheel frame  16  with a slideable pedal assembly bracket  18  mounted on the tricycle front frame portion  16  and seat support  48  mounted onto the front frame spindle  44 . Rear wheel frame  56  provides bearing  58  mounted onto spindle  44  providing a rotative front wheel frame  16 . Seat assembly  46  comprises seat support  48  that is mounted onto spindle  44  and seat  50  that is mounted onto and selectively positionable on seat support  48 . The pedal assembly provides pedal assembly mount  18  having mount lock  20 , and chain guides  26 , with sprocket  22 , crank  28  and pedals  32  mounted to a post enabling the user to adjust the distance between the pedal assembly and their arm length. 
         [0159]    Referring to  FIG. 17A through 17C , shown is a side view of the tricycle of the present invention having a slidable pedal assembly and side and front views of the pedal assembly.  FIG. 17A  shows the foldable tricycle  10  of the present invention having a front wheel frame  16  with a slideable pedal assembly bracket  18  mounted on the tricycle front frame portion  16  and seat support  48  mounted onto the front frame spindle  44 . Rear wheel frame  56  provides bearing  58  mounted onto spindle  44  providing a rotative front wheel frame  16 . Seat assembly  46  comprises seat support  48  that is mounted onto spindle  44  and seat  50  that is mounted onto and selectively positionable on seat support  48 .  FIG. 17B  shows a side view of the pedal assembly and  FIG. 17C  shows a front view of the pedal assembly comprising pedal assembly mount  18  having mount lock  20 , and chain guides  26 , with sprocket  22 , crank  28  and pedals  32  enabling the user to adjust the distance between the pedal assembly and their leg length. 
         [0160]    Referring to  FIG. 18 , shown is a partial front view of the tricycle of the present invention. Shown is the front frame  16  having pedal assembly  17  mounted thereon. Front frame  16  has shock absorbers  34  fastened to the front wheel spindle having cogset  38  and wheel  36  mounted thereto. Also shown is mount  18  having latch  20  for fixedly attaching the pedal assembly in a desired location and chain guides  18  enable the mount to slide along front frame  16 . 
         [0161]    It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above. 
         [0162]    While certain novel features of this invention have been shown and described and are pointed out in the annexed claims, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention. 
         [0163]    Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.