Abstract:
An apparatus which is convertible from a portable cargo container to a wheeled vehicle. In particular, the present invention is a backpack or article of luggage that includes a deployable wheeled platform so that the backpack or luggage is convertible to a scooter type vehicle. The present invention is particularly useful for transporting relatively heavy loads along with a human operator, quickly and with minimal effort.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application claims the benefit of U.S. Provisional Application No. 61/515,828, filed Aug. 5, 2011 and is related to U.S. patent application Ser. No. 12/769,187 filed Apr. 28, 2010 titled CONVERTIBLE CARGO CONTAINER, the entireties of these contents hereby expressly incorporated by reference herein for all purposes. 
     
    
     FIELD OF THE INVENTION 
       [0002]    This invention relates generally to an apparatus which is convertible from a portable cargo container to a wheeled vehicle, and more particularly, but not exclusively, to a backpack or article of luggage that includes a deployable wheeled platform so that the backpack or luggage is convertible to a scooter type vehicle. Some embodiments of the present invention are particularly useful for transporting relatively heavy loads along with a human operator, quickly and with minimal effort. 
       BACKGROUND OF THE INVENTION 
       [0003]    The subject matter discussed in the background section should not be assumed to be prior art merely as a result of its mention in the background section. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in and of themselves may also be inventions. 
         [0004]    Backpacks and articles of luggage combining wheels and retractable pull handles are well known in the art. Although these devices aid in transporting cargo, they do not aid in transporting a human operator. 
         [0005]    Likewise, foldable scooters and bicycles as disclosed in U.S. Pat. No. 3,680,879 are also well known in the art. These devices provide a convenient means of transporting a bike or scooter, but do not provide an operator the ability to carry any cargo. 
         [0006]    Other portable wheeled devices known in the art are described in U.S. Pat. No. 6,155,579 which discloses a foldable child stroller and U.S. Pat. No. 5,791,670 which discloses an article carrying device. U.S. Pat. Nos. 5,609,278, 5,984,154, 5,483,495, 6,179,176, 4,036,336, 5,749,503, 5,881,932, and 5,743,447 all disclose wheeled carrying devices with alternative carrying devices. 
         [0007]    Convertible backpacks that also function as rideable scooters can be susceptible to folding and loading that sometimes pose physical risks to users. Some physical risks include folding and scissoring components that, without attention, may lead to pinching risks as a user transitions between the various modes. 
         [0008]    Further, many deck transition/attachment systems can lead to unstable connections when the deck is open. It can be the case that the coupling that enables the end of the deck to fold for storage, also means that the attachment can be a point of failure during riding. Failure modes include instability or premature folding, particularly when a rider pushes forward, or pulls back, on a steering mechanism. 
         [0009]    In some implementations having a backpack and a folding deck engaging a back of the backpack, the deck and folding hardware can add a significant distance between the backpack pack and the wearer. This distance can degrade the quality of the backpack function of being worn on the back and carrying items because the items extend too far away from the user. 
         [0010]    An important consideration for some users is the ease by which a deck is transitioned between a closed mode and an open mode. For these users, a simple one-handed operable latching mechanism is superior. Unfortunately, for any latching solutions attempting to address other concerns identified herein, it can be a challenge to also maintain desired simplicity. 
         [0011]    What is needed is a backpack or article of luggage that includes a deployable wheeled platform so that the backpack or luggage is convertible to a scooter type vehicle, preferably while reducing the drawbacks identified herein. 
       BRIEF SUMMARY OF THE INVENTION 
       [0012]    The following summary of the invention is provided to facilitate an understanding of some of technical features related to a backpack including a deployable wheeled riding platform, and is not intended to be a full description of the present invention. A full appreciation of the various aspects of the invention can be gained by taking the entire specification, claims, drawings, and abstract as a whole. The present invention is applicable to other types of luggage and other deployable wheeled platforms. 
         [0013]    Overcoming these problems by providing a convertible cargo container with a deployable wheeled platform is a primary objective of the present invention. Other objects of the invention will become apparent in light of the following disclosure and related claims. 
         [0014]    A combination scooter, pull-pack, backpack with three user transportation modes: riding, pulling, and carrying. The Product design incorporates the following combination of unique characteristics and components: An integrated three-wheeled scooter where, in ride mode, one wheel is located at the front end of the cargo carrier, and the other two wheels are located at the rear of a deployable riding platform so as to be functional in both ride mode with the platform deployed, and in pull mode with the platform retracted; an integrated cargo carrier component; a fully deployable and retractable riding platform with an integrated linkage between the cargo carrier and platform such that all three wheels remain in contact with the ground allowing the cargo carrier to remain standing upright while transforming between open and closed positions, as well as through the transition between these positions; an integrated roller(s) mechanism on the end of the platform that allows the platform to easily roll up and down between open and closed positions; a latching mechanism(s) integrated into the platform that allows the platform to be secured in both open and closed positions; an offset steering mechanism with a linkage to the front wheel chassis allowing the rider to turn the scooter&#39;s front wheel free of the cargo payload weight resistance in order to achieve the desired turn; integrated strap(s) for carrying the entire unit when riding and pulling aren&#39;t convenient; an integrated and vertically adjustable handlebar component; and an integrated friction brake pedal on the rear of the platform that slows both rear wheels when depressed in ride mode. 
         [0015]    Embodiments of the present invention is generally comprised of three main components, a cargo container  1 , a handle  4 , and a retractable platform  7  having wheels  10 , which can be converted to three basic modes, a backpack, wheeled luggage, and a scooter type vehicle. The first backpack mode is suitable for carrying light loads or loads over rough terrain. The second wheeled luggage mode is most suited to carrying cargo in medium traffic areas with generally flat terrain, such as an airport. The third scooter type vehicle mode is well suited to transporting a load as well as the operator great distances over low traffic areas with generally flat terrain. The third scooter type mode is also particularly advantageous when time is of the essence. The invention thus overcomes several problems associated with manually hauling cargo efficiently, while also providing a means to transport an operator along with the payload. 
         [0016]    A mobility cargo platform includes a vertically extending central main support having a longitudinal channel extending from a bottom end to a top end and a track assembly disposed along an outside of the vertically extending main support extending upwardly from a first location proximate the bottom end to a second location toward the top end; a steering handle rotatably disposed inside the longitudinal channel and extending from the bottom end above the top end controlling a direction; a steerage linkage coupled to the steering handle at the bottom end and extending in a first direction away from the vertically extending central main support; a steering wheel assembly, coupled to the steerage linkage; a stowable rider deck having a proximal end including a track engagement assembly coupled to the track assembly and a distal end coupled to a rear wheel assembly, the stowable rider deck repeatably transitionable between a closed mode in which the proximal end is proximate the second location with the rider deck generally vertical and an open mode in which the proximal end is proximate the first location with the rider deck generally horizontal; a cargo container coupled to the vertically extending central main support; and a latching assembly, coupled to the stowable rider deck, securing the stowable rider deck in the closed mode. 
         [0017]    Any of the embodiments described herein may be used alone or together with one another in any combination. Inventions encompassed within this specification may also include embodiments that are only partially mentioned or alluded to or are not mentioned or alluded to at all in this brief summary or in the abstract. Although various embodiments of the invention may have been motivated by various deficiencies with the prior art, which may be discussed or alluded to in one or more places in the specification, the embodiments of the invention do not necessarily address any of these deficiencies. In other words, different embodiments of the invention may address different deficiencies that may be discussed in the specification. Some embodiments may only partially address some deficiencies or just one deficiency that may be discussed in the specification, and some embodiments may not address any of these deficiencies. 
         [0018]    Other features, benefits, and advantages of the present invention will be apparent upon a review of the present disclosure, including the specification, drawings, and claims. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]    The accompanying figures, in which like reference numerals refer to identical or functionally-similar elements throughout the separate views and which are incorporated in and form a part of the specification, further illustrate the present invention and, together with the detailed description of the invention, serve to explain the principles of the present invention. The forgoing and other features and advantages of the invention will be apparent from the detailed description contained herein below, taken in conjunction with the drawings, in which: 
           [0020]      FIG. 1  is a front isometric view of a first embodiment of the present invention in a fully extended riding position. 
           [0021]      FIG. 2  is an isometric view of the handles of the firs embodiment in a deployed position. 
           [0022]      FIG. 3  is a rear isometric view of the first embodiment of the present invention in a fully extended riding position. 
           [0023]      FIG. 4  is a rear isometric view of the first embodiment in an intermediate stage with the handles in a closed position. 
           [0024]      FIG. 5  is a rear isometric view of the first embodiment in an intermediate stage with the handles retracted and in a closed position. 
           [0025]      FIG. 6  is a front isometric view of the first embodiment with the platform in a retracted position and the handles closed and in an extended position. 
           [0026]      FIG. 7  is a rear isometric view of  FIG. 5 . 
           [0027]      FIG. 8  is a front isometric view of the first embodiment with the present invention in a fully retracted position. 
           [0028]      FIG. 9  is a rear isometric view of the first embodiment with the present invention in a fully retracted position. 
           [0029]      FIG. 10  is a front isometric view of the first embodiment with the present invention in a fully retracted position with the cargo container closure in an open position. 
           [0030]      FIG. 11  is an isometric view of the first embodiment showing the telescoping steering tube and associated wheel. 
           [0031]      FIG. 12  is an isometric view of the telescoping steering tube and associated wheel. 
           [0032]      FIG. 13  is a front isometric view of the first embodiment showing the retractable platform. 
           [0033]      FIG. 14  is a front isometric view of the retractable platform. 
           [0034]      FIG. 15  is a rear isometric view of the first embodiment showing the retractable platform. 
           [0035]      FIG. 16  is a rear isometric view of the retractable platform. 
           [0036]      FIG. 17  is a rear isometric view of a second embodiment of the invention with its platform extended. 
           [0037]      FIG. 18  is the same view as  FIG. 17  with the platform retracted. 
           [0038]      FIG. 19  is a front isometric view of the second embodiment of the invention. 
           [0039]      FIG. 20  is a side view of the second embodiment of the invention. 
           [0040]      FIG. 21  is a bottom view of the second embodiment of the invention with the platform retracted. 
           [0041]      FIG. 22  is a bottom view of the second embodiment of the invention with the platform extended. 
           [0042]      FIG. 23  illustrates a closed isometric view of an alternate embodiment for a closed convertible backpack, wheeled luggage, and scooter system. 
           [0043]      FIG. 24  illustrates a top plan view of the alternate embodiment shown in  FIG. 23  with a rider deck opened and extended. 
           [0044]      FIG. 25  illustrates a front plan view of the alternate embodiment shown in  FIG. 23 . 
           [0045]      FIG. 26  illustrates a back plan view of the alternate embodiment shown in  FIG. 23  with the rider deck closed. 
           [0046]      FIG. 27  illustrates a bottom plan view of the alternate embodiment shown in  FIG. 23  with the rider deck open and extended. 
           [0047]      FIG. 28  illustrates a side view of the alternate embodiment shown in  FIG. 23  with the rider deck closed. 
           [0048]      FIG. 29  illustrates the side view of the alternate embodiment shown in  FIG. 28  tilted into the pull configuration. 
           [0049]      FIG. 30  illustrates a side view of the alternate embodiment shown in  FIG. 23  with a luggage element removed for clarity and with the rider deck open and extended. 
           [0050]      FIG. 31  illustrates the side view of  FIG. 30  with the luggage element added for context. 
           [0051]      FIG. 32  illustrates a side view of the alternate embodiment shown in  FIG. 23  with the rider deck intermediate the open and closed positions. 
           [0052]      FIG. 33  illustrates a detail view of steerage linkage of the alternate embodiment shown in  FIG. 23 . 
           [0053]      FIG. 34  illustrates an isometric view of a brake assembly of the alternate embodiment shown in  FIG. 23 . 
           [0054]      FIG. 35  illustrates a side section view of the brake assembly shown in  FIG. 34 . 
           [0055]      FIG. 36  illustrates a plan view of a brake pedal of the brake assembly shown in FIG. 
           [0056]      34 . 
           [0057]      FIG. 37  illustrates an isometric view of the brake assembly shown in  FIG. 34  with the brake pedal shown in  FIG. 36  removed. 
           [0058]      FIG. 38  illustrates operation of a braking system for the alternate embodiment shown in  FIG. 23 . 
           [0059]      FIG. 39  illustrates a roller assembly connecting system coupling the rider deck to a backpack assembly for the alternate embodiment shown in  FIG. 23 . 
           [0060]      FIG. 40  illustrates a detail view of the roller assembly shown in  FIG. 39 . 
           [0061]      FIG. 41  illustrates a first side sectional view of the roller assembly shown in  FIG. 39 . 
           [0062]      FIG. 42  illustrates a second side sectional view of the roller assembly shown in  FIG. 39 . 
           [0063]      FIG. 43  illustrates a plan view for a representative deck latching system for the alternate embodiment shown in  FIG. 23 . 
           [0064]      FIG. 44  illustrates a plan view for an alternative representative deck latching system for the alternate embodiment shown in  FIG. 23 . 
           [0065]      FIG. 45  illustrates a detail plan view of the deck latching system shown in  FIG. 44 . 
           [0066]      FIG. 46  illustrates a plan view for an alternative representative deck latching system for the alternate embodiment shown in  FIG. 23 . 
           [0067]      FIG. 47  illustrates a detail plan view of the deck latching system shown in  FIG. 46 . 
           [0068]      FIG. 48  illustrates a plan view for an alternative representative deck latching system for the alternate embodiment shown in  FIG. 23 . 
           [0069]      FIG. 49  illustrates a detail plan view of the deck latching system shown in  FIG. 48 . 
           [0070]      FIG. 50  illustrates a deck stop for the alternate embodiment shown in  FIG. 23 . 
           [0071]      FIG. 51  illustrates a deck pull handle for the alternate embodiment shown in  FIG. 23 . 
           [0072]      FIG. 52  illustrates an isometric view of an optional backpack pad used with the alternative embodiment shown in  FIG. 23 . 
           [0073]      FIG. 53  illustrates an alternative to the roller assembly shown in  FIG. 39 . 
           [0074]      FIG. 54-FIG .  73  illustrate alternative embodiments for a backpack with a deployable wheeled rider deck. 
           [0075]      FIG. 54  illustrates a rear perspective view of the alternative embodiment in an open mode. 
           [0076]      FIG. 55  illustrates a rear perspective view of the alternative embodiment in an intermediate mode. 
           [0077]      FIG. 56  illustrates a rear perspective view of the alternative embodiment in a closed mode. 
           [0078]      FIG. 57  illustrates a side view of the alternative embodiment in the open mode. 
           [0079]      FIG. 58  illustrates a side view of the alternative embodiment in the intermediate mode. 
           [0080]      FIG. 59  illustrates a side view of the alternative embodiment in the closed mode. 
           [0081]      FIG. 60  illustrates a top view of a portion of the wheeled rideable platform engaging a main tube. 
           [0082]      FIG. 61  illustrates a top view of the lateral rails of  FIG. 60 . 
           [0083]      FIG. 62  illustrates a section of a front perspective view of the alternative embodiment. 
           [0084]      FIG. 63  illustrates a bottom perspective view of the section illustrated in  FIG. 62 . 
           [0085]      FIG. 64  illustrates the bottom perspective view of the section illustrated in  FIG. 63  without a protective shroud. 
           [0086]      FIG. 65  illustrates a front perspective view of the sliding linkage in the intermediate open mode. 
           [0087]      FIG. 66  illustrates a detail view of the sliding linkage shown in  FIG. 65 . 
           [0088]      FIG. 67  illustrates a front perspective view of the sliding linkage in the open mode. 
           [0089]      FIG. 68  illustrates the perspective view of  FIG. 65  with the sliding linkage shroud removed. 
           [0090]      FIG. 69  illustrates a perspective view of the latch mechanism in the latched position. 
           [0091]      FIG. 70  illustrates a side view of the latch mechanism of  FIG. 69 . 
           [0092]      FIG. 71  illustrates a perspective view of the latch mechanism in the unlatched position. 
           [0093]      FIG. 72  illustrates a side view of the latch mechanism of  FIG. 71 . 
           [0094]      FIG. 73  illustrates a side cross-section of engagement of the latch mechanism in the open mode. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0095]    Embodiments of the present invention provide a system and method for a backpack or article of luggage that includes a deployable wheeled platform so that the backpack or luggage is convertible to a scooter type vehicle, preferably while reducing the drawbacks identified herein. The following description is presented to enable one of ordinary skill in the art to make and use the invention and is provided in the context of a patent application and its requirements. 
         [0096]    Various modifications to the preferred embodiment and the generic principles and features described herein will be readily apparent to those skilled in the art. Thus, the present invention is not intended to be limited to the embodiment shown but is to be accorded the widest scope consistent with the principles and features described herein. 
         [0097]    Embodiments of the present invention include a cargo container which can be converted into a scooter type vehicle for transporting a person and his cargo. Embodiments generally include three main components, a cargo container  1 , a handle  4 , and a retractable platform  7  having wheels  10 . The invention has three use positions including riding, as shown in  FIGS. 1-3 , pulling/pushing, as shown in  FIGS. 6-7  and carrying as shown in  FIGS. 8-9 . 
         [0098]    Referring specifically to  FIGS. 1 and 2 , the convertible cargo container is seen in its ride mode having retractable platform  7  deployed to a position substantially perpendicular to cargo container  1 . The cargo container  1  can be manufactured of hard shell plastic such as ABS, or lightweight metal. Wheels  10  are mounted at the outer edges of the lower end of platform  7 . Platform  7  can be made of any suitably light, strong material such as plastic or thin metal to achieve rigidity and low weight. Wheels  10  can be fabricated of any suitable polymer, plastic, rubber, or synthetic rubber. Additionally, it is noted that the platform could also have a single rear wheel centrally mounted. Telescoping tube  13  is shown in its extended position and handles  4  are pivoted to their horizontal position about pivots  19  forming a handle bar  16 . Telescoping tube  13  uses spring biases balls and detents so that it can maintain its extended and retracted positions. Handles  4  can be pivoted to a closed position as shown in  FIGS. 4-10  when it is desired to push/pull or carry the cargo container. In push/pull or carry mode the platform  7  is retracted to a position that is substantially parallel to the rear side of the cargo container. Shoulder straps  34  are mounted on the cargo container in a conventional manner so that the invention can be carried as a backpack. Shoulder straps  34  may be detachable or retractable. Door  22  can be pivotally mounted or friction fit to provide access to main storage compartment  25 . Platform  7  deploys along a slot  37  in the cargo container  1  and is slidably connected to telescoping tube  13  at its upper end through a sliding bearing  43 . 
         [0099]    Telescoping tube  13  is rotatably mounted in the cargo container  1  as is distal end, and is connected to steering assembly  28  as shown in  FIGS. 11-12 . The frame of the steering assembly  28  can be rotated in the cargo container through arcuate slots  29 . Front wheel  31  is rotatably mounted in steering assembly  28 . The telescoping tube and steering assembly can be fabricated from any suitable lightweight metal or plastic. 
         [0100]    As can best be seen in  FIGS. 13-16 , a linkage arm  40  pivotally connects platform  7  to the distal end of telescoping tube  13 . In this manner, platform  7  can be retracted to its push/pull or carry position. 
         [0101]    Operation of the device will now be described. When an operator wants to transport himself and cargo in scooter mode, the handles  4  are fully deployed as handle bar  16 , and the platform  7  is fully deployed at a substantially perpendicular angle to the cargo container  1 . The operator stands on platform  7  and steers the device with telescoping tube  13  and the attached steering assembly  28 . When a high traffic area is encountered, the operator would step off the platform and pivot the handles to their closed position as shown in  FIG. 4 . Platform  7  would then be retracted along slot  37  until it is substantially parallel to the rear side of the cargo container  1  as shown in  FIGS. 6 and 7 . The apparatus is now in its wheeled luggage mode and can be transport on wheels  10  by pushing or pulling the closed handles. When carrying the apparatus is desirable, telescoping tube  13  is in its fully retracted position as shown in  FIGS. 8-10 , and the apparatus can be worn as a backpack utilizing shoulder straps  34 . The bottom of platform  7  may be contoured to provide the operator lumber support when using the apparatus in backpack mode. The transition steps are reversed when switching from backpack mode to scooter mode. It is noted that the order the transitional steps are performed is not crucial, and may be altered. 
         [0102]    The second embodiment of the invention is similar to the first, having a cargo container  46 , a telescoping tube  58 , a platform  52  and wheels  55  as shown in  FIGS. 17 and 18 . Telescoping tube  58  is connected to front wheel  64  through the same steering mechanism described in the first embodiment. As shown in  FIGS. 21 and 22  platform  52  is slidably mounted on rods  73 . Platform springs  70  bias the platform to its extended position as shown in  FIG. 22 . A spring biased platform release hatch  67  retains the platform  52  in its retracted position. Rigid handle  49  has two handle bars  61  which form a central opening. Operation of the second embodiment is the same as the first except that the platform is deployed to its extended position by depressing platform release hatch  67 , and is retracted pushing it against the bias of springs  70  until caught by platform release hatch  67 . 
         [0103]      FIG. 23  illustrates a closed isometric view of an alternate embodiment for a closed convertible backpack, wheeled luggage, and scooter system, referred to herein for convenience as a mobility cargo platform  2300 . Platform  2300  includes a cargo container  2305 , a retractable, telescoping handle  2310 , and a stowable rider deck  2315 . The preferred embodiment for platform  2300  includes three wheels: one steering wheel (not shown) mounted to a steerage linkage coupled to handle  2310  so that turning handle results in turning the wheel and controlling direction, and a pair of multiuse platform rear wheels  2320  coupled to a lower edge of rider deck  2315 . As braking assembly  2325 , shown in detail below, includes a pedal actuator  2330  for engaging a pair of brake pads against rear wheels  2320 , and specialized fenders  2335  disposed near rear wheels  2320 . A latching system  2340  secures rider deck  2315  in the closed position. A roller assembly attached to rider deck  2315  and a track assembly  2345 , coupled to handle  2310 , guides transition of rider deck  2315  as it moves between a closed/retracted position and an open/extended position. 
         [0104]      FIG. 24  illustrates a top plan view of platform  2300  shown in  FIG. 23  with rider deck  2315  opened and extended. A handle lock is shown for locking handle  2310  in an extended position (shown) or a retracted position in which handle  2310  is telescoped down (shown in  FIG. 26 ).  FIG. 25  illustrates a front plan view of platform  2300  shown in  FIG. 23 . In this view, a front steering wheel  2505  (described but not shown in  FIG. 23 ) is coupled to a steering linkage  2510 . Steering linkage  2510  helps to decouple steering ability from cargo weight. 
         [0105]      FIG. 26  illustrates a back plan view of platform  2300  shown in  FIG. 23  with the rider deck  2315  closed and handle  2310  retracted and stowed. In this configuration, platform  2300  is ready for storage or to be carried as a bag/backpack using one or more straps. Handle lock  2405  is used to lock/unlock handle  2310  for telescoping.  FIG. 27  illustrates a bottom plan view of platform  2300  shown in  FIG. 23  with rider deck open  2315  and extended. Steering linkage  2510  is shown coupling handle  2310  to front steering wheel  2505 . 
         [0106]      FIG. 28  illustrates a side view of platform  2300  shown in  FIG. 23  with rider deck  2315  closed, handle  2310  retracted, and platform  2300  stationary and stable on a surface  2805  as it sits on all three wheels.  FIG. 29  illustrates the side view of platform  2300  shown in  FIG. 28  tilted into the pull configuration with handle  2310  extended, rider deck  2315  closed, and front steering wheel  2505  lifted up off of surface  2805  as platform  2300  is moved (e.g., pushed or pulled) over surface  2805 . This view highlights one of the special features of fenders  2335 : they are shortened and extend around but a partial arc of rear wheels  2320  so as to not interfere with surface  2805  as platform is tilted backwards and moved. 
         [0107]      FIG. 30  illustrates a side view of platform  2300  shown in  FIG. 23  with cargo container  2305  removed for clarity and with rider deck  2315  open and handle  2310  extended.  FIG. 31  illustrates the side view of  FIG. 30  with cargo container  2305  added for context. 
         [0108]      FIG. 32  illustrates a side view of platform  2300  shown in  FIG. 23  with rider deck  2315  intermediate its open and closed positions. A distal end  3205  of rider deck  2315 , opposite of a proximal end  3210  where rear wheels  2320  are attached, glidingly rolls within track assembly  2345  as it moves up/down to close/open rider deck  2315  (which retracts/extends rider deck  2315  as well). To close platform  2300 , distal end  3205  is moved up, and as distal end  3205  moves up in track assembly  2345 , rear wheels  2320  move closer to front steering wheel  2505  and rider deck  2315  moves more vertical. To open platform  2300 , distal end  3205  is moved down, and as distal end  3205  moves down in track assembly  2345 , rear wheels  2320  move further from front steering wheel  2505  and rider deck  2315  moves more horizontal. 
         [0109]      FIG. 33  illustrates a detail view of steering linkage  2510  of platform  2300  shown in  FIG. 23 . Steering linkage  2510  includes a lower tube  3305  into which handle  2310  telescopes and within which handle  2310  rotates. A rotation arm  3310  is coupled to the bottom of lower tube  3305  and rotates as handle  2310  rotates. A linkage arm  3315  couples rotation arm  3310  to front steering wheel  2505 . Front wheel is rotatably supported within a caster/bearing  3320  extending from lower tube  3305  by a bracket  3325 . Caster/bearing  3320  can provide shock absorption in some embodiments. Steering linkage  2510  helps improve safety by making turning easier when weight is added to platform  2300 . Without steering linkage  2510 , a user would need to manage the weight with each turn. 
         [0110]      FIG. 34  through  FIG. 38  highlight a preferred braking solution.  FIG. 34  illustrates a isometric view of brake assembly  2325  of platform  2300  shown in  FIG. 23 . Pedal actuator  2330  is coupled to both rear wheels  2320  to actuate braking with both, improving safety as compared to a single brake solution.  FIG. 35  illustrates a side section view of the brake assembly shown in  FIG. 34  and includes brake springs  3505  coupling rider deck  2315  to pedal actuator  2330  to bias pedal actuator  2330  to the unbraked position. 
         [0111]      FIG. 36  illustrates a plan view of pedal actuator  2330  of brake assembly  2325  shown in  FIG. 34 . Pedal actuator  2330  includes apertures  3605  to pivotally couple to rider deck  2315  and to selectively contact a brake pad  3610  to each rear wheel  2320 . A pair of latches  3615  ensure that pedal actuator  2330  does not rotate too far upward and accidentally trip a rider or otherwise interfere with availability for braking.  FIG. 37  illustrates an isometric view of brake assembly  2325  shown in  FIG. 34  with the brake pedal shown in  FIG. 36  removed.  FIG. 38  illustrates operation of the braking system for platform  2300  shown in  FIG. 23 . A pair of brake pads  3800  (in some implementations a single pad) make contact with both (or a single rear wheel) when pedal actuator  2330  (shown in  FIG. 23 ) is depressed. A deck support  3805  includes an aluminum channel fastened to an underside of platform  2300  to provide structural rigidity. Pedal actuator  2330  hinges about an axle  3810  mounted to deck support  3805 . 
         [0112]      FIG. 39  illustrates a roller assembly connecting system  3905  coupling rider deck  2315  to track assembly  2345  for platform  2300  shown in  FIG. 23 . Roller assembly connecting system  3905  includes an arm  3910  with a pair of rollers that engage a pair of tracks inside track assembly  2345 .  FIG. 40  illustrates a detail view of roller assembly connecting system  3905  shown in  FIG. 39 . A roller  4005  of the pair of rollers is shown engaging a track  4010  of track assembly  2345 . The other roller and track are mirror images of those shown.  FIG. 41  illustrates a first side sectional view of roller assembly connecting system  3905  shown in  FIG. 39 .  FIG. 42  illustrates a second side sectional view of roller assembly connecting system  3905  shown in  FIG. 39 . Arm  3910 , roller  4005 , and track  4010  are shown. 
         [0113]    In some cases and for some embodiments and applications, there may be a need or desire to latch rider deck  2315  into the open position. Some designs can produce undesirable flexing/pivoting about connection points between rider deck  2315  and track assembly  2345 . For example there can be a forward rotation of handle  2310  while rider deck  2315  is open/extended and a rider is aboard.  FIG. 43  illustrates a plan view for a representative deck latching system  4305  for platform  2300  shown in  FIG. 23 . Deck latching system  4305  of the preferred embodiment is designed and configured to both latch rider deck  2315  open, but also to reduce/eliminate forward rotation of handle  2310  when platform  2300  is ridden in scooter mode. Deck latching system  4305  is a sliding bolt latch design that includes a biased pin for engagement with, and disengagement from, track assembly  2345 . 
         [0114]      FIG. 44  illustrates a plan view for an alternative representative deck latching system  4405  for platform  2300  shown in  FIG. 23 .  FIG. 45  illustrates a detail plan view of deck latching system  4405  shown in  FIG. 44 . Deck latching system  4405  includes a pivoting handgrip  4505  that pulls up to initiate disengagement of deck latching system  4405  from track assembly  2345  and rotates downward to initiate engagement of track assembly  2345 . 
         [0115]      FIG. 46  illustrates a plan view for an alternative representative deck latching system  4605  for platform  2300  shown in  FIG. 23 .  FIG. 47  illustrates a detail plan view of deck latching system  4605  shown in  FIG. 46 . Deck latching system  4605  includes a sliding latch  4705  that slides backward to initiate disengagement of deck latching system  4605  from track assembly  2345  and slides forward to initiate engagement of track assembly  2345 . 
         [0116]      FIG. 48  illustrates a plan view for an alternative representative deck latching system  4805  for platform  2300  shown in  FIG. 23 .  FIG. 49  illustrates a detail plan view of deck latching system  4805  shown in  FIG. 48 . Deck latching system  4805  includes a rotating latch  4905  that rotates in one direction to initiate disengagement of deck latching system  4805  from track assembly  2345  and rotates in the other direction to initiate engagement of track assembly  2345 . 
         [0117]      FIG. 50  illustrates a deck stop  5000  for platform  2300  shown in  FIG. 23 . Deck stop  5000  is part of the connection system between the rider deck and the track assembly shown and described herein. Arm  3910  is part of deck stop  5000  and includes an aperture  5005  for mounting the rollers that move within the tracks of the track assembly. A recess  5010  receives and secures a strut underlying the rider deck to add strength. Latching mechanisms described herein are responsive to this arrangement of deck stop  5000 . Alternatives to deck stop  5000  may be implemented, for example, deck stop  5000  may be mounted under the rider deck which allows removal of a front “hump” shown at the front of the rider deck in some figures and would permit alternate latching mechanisms to be used. Additionally, for some designs, the hump may on the distal end of the rider deck can make wearing platform  2300  in backpack mode uncomfortable for some users. Alternative structures resulting in reduction/elimination of the hump or this effect are advantageous. 
         [0118]      FIG. 51  illustrates a deck pull handle  5105  for platform  2300  shown in  FIG. 23 .  FIG. 52  illustrates an isometric view of an optional backpack pad  5205  used with platform  2300  shown in  FIG. 23 . Deck pull handle  5105  is, in some embodiments, integrated into platform  2300 , allowing for its deployment and stowage. Backpack pad  5205  hinges at the top and secures at the bottom with selective attachment structures (e.g., magnets and the like) in the folded/closed position. 
         [0119]      FIG. 53  illustrates an alternate deck roller assembly  5300  that is an alternative to roller assembly connecting system  3905  shown in  FIG. 39 . Deck roller assembly  5300  includes a “spine” support  5305  (e.g., a tube for handle  2310  or the like) that includes a pair of integrated flanges  5310 . A roller assembly engages flanges  5310  and includes a roller  5320 . Attachment of rider deck  2315  to assembly  5315  allows opening/closing similar to that as described herein for other roller assembly alternatives. 
         [0120]    Other improvements include structures making platform  2300  less bulky, and lighter, and reducing costs of goods. The figures herein represent prototypes and initial visualizations of the product and in some ways are sturdier than required for manufacturing. Some of the designs reflect prototypes built from 1″-thick solid aluminum stock, which is unnecessary for manufactured products, but appropriate for wanting to withstand extended testing and potential failure analysis. Alternatives suitable for manufacture may include designs inspired from folding ironing tables (which employ very inexpensive yet reliable fold-and-slide mechanism) and drawer rail hardware. The latter are made out of punched and formed steel and are rated to support considerable load. Also, they roll on inexpensive nylon rollers which could help the platform deploy smoothly. These two points of departure or inspiration alone would help reduce complexity, bulk, weight and expense considerably. 
         [0121]    Specifics of shoulder/carrying straps have not been shown as they may implemented in many different ways. A preferred implementation includes straps mounted to a side of cargo container  2305  supporting rider deck  2315 . A pair of straps are provided on lateral sides of rider deck  2315 , connected at a top and at a bottom of cargo container  2305 . For straps disposed on that side of cargo container  2305 , it is advantageous to provide for a strap management system to inhibit having straps interfere with use during ride and pull modes. Strap management may be fairly basic, including a retaining system for the straps and cargo container such as hook-and-loop mating patches that removeably attach the straps to the cargo container and reduce interference. More exotic systems of buckles and retainers may be used to more securely and aesthetically retain the straps when not needed or desired, such as for carrying platform  2300 . 
         [0122]      FIG. 54-FIG .  73  illustrate alternative embodiments for a backpack framework  5400  with a deployable wheeled rider deck (or platform)  5405 .  FIG. 54  illustrates a rear perspective view of the alternative embodiment in an open mode.  FIG. 55  illustrates a rear perspective view of the alternative embodiment in an intermediate mode.  FIG. 56  illustrates a rear perspective view of the alternative embodiment in a closed mode. Backpack framework  5400  is configured for use with a removable backpack (not shown) supported by a backpack support/steering shroud  5410 . Backpack framework  5400  is shown without the backpack to better visualize the components and their operation. It is preferred that a user be able to detach the backpack from backpack framework  5400  and use the backpack in standalone fashion, while preserving an option for its use. In other implementations, the backpack is not required to be removable, such as having backpack framework  5400  integrated into the backpack, luggage, container, or the like. 
         [0123]    As described herein, platform  5405  is moveably engaged with a main tube  5415  that extends generally vertically from support/shroud  5410  (some embodiments may provide a strictly vertical arrangement while other arrangements may configure main tube with a slope). Platform  5405  includes a coupling that enables a proximal end  5420  (via a lateral linkage) to travel along a track assembly (in this embodiment one or more (preferably a pair of opposing) lateral rails), herein referred to as lateral rails  5425  when transitioning platform  5405  between the open mode and the closed mode. A latching mechanism  5430  locks platform  5405  into the open mode. Latching mechanism  5430  operates by use of a simple latch handle  5435  to unlock platform  5405 . This enables single-handed manipulation and operation to transition platform  5405  between the modes. The coupling may include one or more sliders, rollers and the like. Additionally, the track assembly may include a wide-range of different rails, channels, guides, and the like, in addition to or in lieu of the particular implementation shown and described herein. 
         [0124]    Platform  5405  includes one or more (preferably a pair) of wheels  5440  at a distal end  5445 . One or more (preferably one) steering wheel  5450  is coupled to main tube  5415  by a steerage linkage to enable safe steering by virtue of a steering handlebar  5455  rotatably coupled to the steerage linkage through main tube  5415 . A preferred implementation includes provision of the three wheels as described which enables a user to maintain all three wheels in contact with the ground in either the open mode or the closed mode. 
         [0125]    Representative attachment points, for example a plate  5460 , are shown to support repeatable (de)attachment of a backpack to backpack framework  5400 . (Other attachment points may be disposed on other parts, for example, along a perimeter of support/shroud  5410 .) 
         [0126]    In  FIG. 55 , backpack framework  5400  is transitioning from the open mode (e.g.,  FIG. 54 ) to the closed mode (e.g.,  FIG. 56 ). Proximal end  5420  slides up and down along lateral rails  5425  to fold/unfold platform  5405 . In  FIG. 56 , platform  5405  is completely folded against main tube  5415 . 
         [0127]      FIG. 57  illustrates a side view of the alternative embodiment in the open mode.  FIG. 58  illustrates a side view of the alternative embodiment in the intermediate mode.  FIG. 59  illustrates a side view of the alternative embodiment in the closed mode.  FIG. 58  presents a linkage  5805  that, similarly to linkage  40  in  FIG. 14 , couples platform  5405  to main tube  5415 . The attachment may be with one or more rollers or sliders or the like. While linkage  5805  provides advantages in operational stability and safety, linkage  5805  is a potential source of a pinch hazard, depending upon an interrelationship and interaction of linkage  5805  with other components. Some embodiments may include an option to releasably couple linkage  5805  to one or more of platform  5405  and main tube  5415 . This allows linkage  5805  to release and separate rather than catch and injure any finger or other appendage. Other protection systems include use of a protective shroud. 
         [0128]    Support/shroud  5410  serves a dual purpose in supporting a backpack as mentioned, and surrounding and inhibiting access to the steerage linkage. The steering linkage could be an additional pinching hazard. There are other potential hazards that may be shielded with a shroud. For example, a roller/linkage slider  5810  that engages lateral rail(s)  5425  and rolls/slides may in some implementations be considered to produce a pinch hazard. Use of a shroud  5815  can reduce such pinch hazards and improves the safety of such devices. 
         [0129]    Also as seen in  FIG. 58 , use of roller/slider(s)  5810  and lateral rail(s)  5425  moves platform  5405  and its connection to main tube  5415  forward from rear connection and allows for use of simple latching mechanism  5430  and one-handed transition. 
         [0130]      FIG. 60  illustrates a top view of a portion of the wheeled rideable platform  5405  engaging main tube  5415 .  FIG. 61  illustrates a top view of a pair of lateral rails  5425  used in  FIG. 60 . A portion of a steerage linkage  6005  is shown in  FIG. 60 . Steerage linkage  6005  is coupled to the front wheel and is operated by handlebar  5455  through main tube  5415 . 
         [0131]      FIG. 62  illustrates a close-up section of a front perspective view of the alternative embodiment. The close-up is of backpack framework  5400  in the open mode and latching mechanism  5430  engaged and securing platform  5405  open.  FIG. 63  illustrates a bottom perspective view of the section illustrated in  FIG. 62 . 
         [0132]      FIG. 64  illustrates the bottom perspective view of the section illustrated in  FIG. 63  without support/shroud  5410 . Steerage linkage  6005  is shown coupling handlebar  5455  to front steering wheel  5450 . Turning handlebar  5455  turns front wheel  5440  by virtue of linkage  6005 . This arrangement enables safe turning and makes it so that turning is independent of the weight and arrangement of the cargo. Without linkage  6005 , a user would need to “lift” the weight of the cargo for every course correction, increasing risk as the load increases. 
         [0133]      FIG. 65  illustrates a front perspective view of backpack framework  5400  in an intermediate (non-open/non-closed mode). Backpack framework  5400  is shown without support/shroud  5410  and includes roller/slider linkage  5810  engaging lateral rail  5425 . As seen in  FIG. 65 , linkage  5805  is implemented as a pair of mechanical linkages that couple platform  5405  to main tube  5415 .  FIG. 66  illustrates a detail view of  FIG. 65  including roller/slider linkage  5810  coupled to lateral rails  5425 . 
         [0134]      FIG. 67  illustrates a front detail perspective view of backpack framework  5400  in the open mode. Roller/slider linkage  5810  is coupled lateral rail  5425 . 
         [0135]      FIG. 68  illustrates the perspective view of  FIG. 65  with linkage shroud  5815  removed. 
         [0136]      FIG. 69-FIG .  73  illustrate details of latching mechanism  5430  in latched and unlatched positions.  FIG. 69  illustrates a perspective view of the latch mechanism in the latched position.  FIG. 70  illustrates a side view of the latch mechanism of  FIG. 69 .  FIG. 71  illustrates a perspective view of the latch mechanism in the unlatched position.  FIG. 72  illustrates a side view of the latch mechanism of  FIG. 71 . Latching mechanism includes a housing  6905  that allows proper arrangement, orientation, and operation of the component parts. These parts include a latch  7005 , a latch handle lever  7010 , a compression spring  7015 , and latch handle  5435 . Compression spring  7015  biases latch  7005  in the locked position and latch handle  5435  downward. Lifting latch handle  5435  overcomes the biasing and moves latch  7005  to the unlocked position. Latch  7005  includes a beveled end to enable transition of the platform from the closed mode to the open mode to automatically lock without lifting latch handle  5435 . On the main tube there is a complementary latch engagement structure that latch  7005  engages in the locked position. The beveling allows automatic locking as latch  7005  contacts the latch engagement structure but ensures positive latching so that locking mechanism  5430  may only be unlocked by manually and intentionally lifting latch handle  5435 . 
         [0137]    During operation, unlocking latching mechanism  5430  by lifting latch handle  5435  simultaneous unlocks the platform and provides the user with a handle to continue the motion and in a single action lift and close the platform. Lifting latch handle  5435  causes latch handle lever  7010  to withdraw latch  7005  and move it against compression spring  7015 , thereby disengaging the lock mode. 
         [0138]      FIG. 73  illustrates backpack framework  5400  in the open mode including a side cross-section of engagement of latch mechanism in the latched position. Shown in  FIG. 73  is a complementary latch engagement structure  7305  that interacts with latch  7005  to lock and unlock latching mechanism  5430 , and platform  5405 . 
         [0139]    Optionally, the cargo container of any embodiment can be made of a suitably durable synthetic or natural fabric shell or it can be formed of a synthetic or natural fabric shell mounted over a rigid frame. Additionally, either embodiment can have a power source such as an electric or gas motor mounted in the platform or cargo container. 
         [0140]    In the description herein, numerous specific details are provided, such as examples of components and/or methods, to provide a thorough understanding of embodiments of the present invention. One skilled in the relevant art will recognize, however, that an embodiment of the invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention. 
         [0141]    Ranges may be expressed herein as from “about” one particular value, and/or to “about” another particular value. When such a range is expressed, another aspect includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about,” it will be understood that the particular value forms another aspect. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint. 
         [0142]    Reference throughout this specification to “one embodiment”, “an embodiment”, or “a specific embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention and not necessarily in all embodiments. Thus, respective appearances of the phrases “in one embodiment”, “in an embodiment”, or “in a specific embodiment” in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined in any suitable manner with one or more other embodiments. It is to be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein are possible in light of the teachings herein and are to be considered as part of the spirit and scope of the present invention. 
         [0143]    The foregoing description of illustrated embodiments of the present invention, including what is described in the Abstract, is not intended to be exhaustive or to limit the invention to the precise forms disclosed herein. While specific embodiments of, and examples for, the invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention, as those skilled in the relevant art will recognize and appreciate. As indicated, these modifications may be made to the present invention in light of the foregoing description of illustrated embodiments of the present invention and are to be included within the spirit and scope of the present invention. 
         [0144]    Thus, while the present invention has been described herein with reference to particular embodiments thereof, a latitude of modification, various changes and substitutions are intended in the foregoing disclosures, and it will be appreciated that in some instances some features of embodiments of the invention will be employed without a corresponding use of other features without departing from the scope and spirit of the invention as set forth. Therefore, many modifications may be made to adapt a particular situation or material to the essential scope and spirit of the present invention. It is intended that the invention not be limited to the particular terms used in following claims and/or to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention is to be determined solely by the appended claims.