Abstract:
The invention relates to a backpack with a extendable left leg exoskeleton and a extendable right leg exoskeleton which can be extended from the backpack and attached to the appropriate leg of wearer whereby transferring the load of the backpack to the ground surface therefore reducing the weight of the backpack. The backpack exoskeleton also contains a shoulder strap and a waist belt, which also contribute to the load bearing functions of the backpack.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to a backpack, particularly a backpack exoskeleton. The invention relates to a backpack with a extendable left leg exoskeleton and a extendable right leg exoskeleton which can be extended from the backpack and attached to the appropriate leg of wearer whenever desired while wearing the backpack exoskeleton, whereby transferring the load of the backpack to the ground surface therefore reducing the weight of the backpack. The backpack exoskeleton also consists of shoulder straps and a waist belt, which also contribute to the load bearing functions of the backpack. 
       BACKGROUND OF THE INVENTION 
       [0002]    Backpacks have commonly been used in activities like hiking, climbing and military activities to carry various items such as clothing, equipments, weapons and various other items. Typical backpacks consists of a shoulder harness that extends over one or both of the wearer&#39;s shoulders in conjunction with a waist belt that wraps around the wearer&#39;s waist. The shoulder harness and the waist belt allow the load of the backpack and its contents to be distributed over both the wearer&#39;s shoulders and waist only, whereby the total weight of the backpack and its contents are still born by the body of the wearer. Various backpack suspension systems have been developed to shift and redistribute the load from the shoulders to waists to make it feel like the weight of the backpack has been reduced, but in reality the weight has not been reduced but only redistributed and the wearer&#39;s body is still bearing the weight of the load. In addition there has been exoskeletons that bear the weight of the load placed on the exoskeleton whereby transferring the weight to the ground, but they are not incorporated into the backpack and are not supported by the backpack. They are independent exoskeletons wherein the load carrying backpack is placed onto the exoskeleton furthermore the independent exoskeletons are bulky units. 
         [0003]    Therefore, there remains a need in the art for a backpack with an exoskeleton incorporated into the construction of the backpack whereby the exoskeleton is carried by the backpack and utilized when needed by the wearer of the backpack while wearing the backpack and not hindering the normal movements of the wearer while the exoskeleton is engaged. 
       SUMMARY OF THE INVENTION 
       [0004]    The present invention relates to a backpack, particularly a backpack exoskeleton, which is a combination of a backpack and exoskeleton. The invention relates to a backpack with built-in exoskeleton legs, which transfers most of the weight of the backpack to the ground surface. The wearer of the backpack exoskeleton can engage and disengage the exoskeleton legs when desired while wearing the backpack exoskeleton. The backpack exoskeleton contains two exoskeleton legs, a right exoskeleton leg and a left exoskeleton legs, which can be extended from the backpack exoskeleton and attached to the appropriate legs of the wearer. The exoskeleton legs extend downward along the appropriate outside side of the leg of the wearer mimicking the natural skeletal structure of the human skeleton. The rod straps attach the exoskeleton to the appropriate leg of wearer at points above the knee, below the knee and at the ankles to transfer the weight of the backpack to the ground surface. There are three structures which help direct and transfer the weight of the backpack to the ground surface, which are the shoulder straps, a waist belt and the exoskeleton legs. The shoulder straps aid the wearer by holding the top weight of the backpack closer to the wearer&#39;s body and aligning the weight whereby allowing a more efficient transfer of weight to the ground surface. 
         [0005]    The waist belt aids in redistributing and aligning the weight over the waist of wearer. The waist belt holds the waist belt unit, a right and a left, which is the site for the origination of the exoskeleton legs appropriately. The waist belt unit contains a waist holder pin, which holds the large waist wheel and the small waist wheel. A waist bridge, a right and a left, attaches to a backpack frame at one end and the other end to a large waist wheel located on the waist belt unit, which directs the weight to the appropriate exoskeleton legs. The exoskeleton backpack can be utilized in an external or internal backpack frame as well as a center or sides frame structures. 
         [0006]    The waist bridge is adjustable to allow for the difference in the girth size of many wearers. The waist bridge contains a waist bridge holes for adjustment and a waist pin and a waist loop lock to lock the adjustment in place. The waist bridges attach to a large waist wheel and the large waist wheel allows the wearer mobility of the back to move the backpack back and forth. A small waist wheel connects to the large waist wheel, and attaches to a top rod allowing for mobility of the thigh or top leg of wearer. The large waist wheel and the small waist wheel are joined together and contain bearings to allow for a smooth movement while withstanding the heavy load of the backpack. 
         [0007]    A knee unit, a right and a left, is composed of a large knee wheel and a small knee wheel, which are attached whereby allowing the knee unit to move back and forth mimicking the movement of the leg of wearer. The top rod extends downward and attaches to a large knee wheel. The large knee wheel is attached to a small knee wheel. A bottom rod, attaches to the small knee wheel and extend downward and bends producing a arch rod which is inserted under the wearer&#39;s shoe whereby coming in contact to the ground. The large and small knee wheel allow for mobility of the lower leg of wearer to mimic the movement of skeletal system of the lower leg. There is a knee wheel stop located on the large knee wheel which aids in the efficient transfer of weight to the ground as well as preventing the bottom rod from rotating too far in the wrong direction whereby preventing the hyperextension of the knee of wearer. The large knee wheel and the small knee wheel are joined together and contain bearings to allow for a smooth movement while withstanding the heavy load of the backpack. 
         [0008]    There are rod straps, which attach the exoskeleton to the legs of the wearer. A top rod strap attaches above the knee and a bottom rod strap attaches below the knee whereby bring the top rod of exoskeleton leg close to the body of wearer and transfers the weight more efficiently to the ground surface. An ankle rod strap attaches at the ankle of wearer and keeps the bottom rod of exoskeleton leg close to the body of wearer and maintains the arch rod underneath the shoe of wearer. Also maintaining the bottom rod in the proper position is an arch rod strap, which attaches to the arch rod at one end and the other end protruding out the inner side of shoe and connecting to the ankle rod strap. Another embodiment of the backpack exoskeleton is the insertion of the ankle rod strapless into an arch hole located in the sole of the shoe of wearer. The weight of the backpack is transferred to the ground through the sole of the shoe. Inserting the arch rod within the sole of the shoe give the wearer increased control of the exoskeleton as well as a firm footing when walking or running. 
         [0009]    These and other objects, features and advantages of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and the specific examples, while indicating preferred embodiments of the invention, are given by way of illustrations only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]    The present invention will become more fully understood from the detailed description given herein below and the accompanying drawings, which are given by way of illustration only and are not limitative of the present invention, wherein: 
           [0011]      FIG. 1  is a side perspective view of the backpack exoskeleton with the legs up; 
           [0012]      FIG. 2  is a side perspective view of the backpack exoskeleton with the legs down; 
           [0013]      FIG. 3  is a front perspective view of the backpack exoskeleton with legs down; 
           [0014]      FIG. 4  is a front exploded view of the exoskeleton legs; 
           [0015]      FIG. 5  is a side perspective view of the left side of waist belt of the backpack exoskeleton; 
           [0016]      FIG. 6  is a side perspective view of the right side of waist belt of the backpack exoskeleton; 
           [0017]      FIG. 7  is an exploded view of the right knee unit bent; 
           [0018]      FIG. 8  is an illustrative view of the knee wheel extended; 
           [0019]      FIG. 9  is an illustrative view of the knee wheel bent; 
           [0020]      FIG. 10  is side perspective view of the backpack exoskeleton with user with exoskeleton legs extended; 
           [0021]      FIG. 11  is a side perspective view of the backpack exoskeleton with user with exoskeleton legs up; 
           [0022]      FIG. 12  is a front perspective view of the backpack exoskeleton with user; 
           [0023]      FIG. 13  is a side perspective view of bottom rod underneath the shoe; 
           [0024]      FIG. 14  is a perspective view of the sole of shoe with arch rod; 
           [0025]      FIG. 15  is a perspective view of bottom rod entering the arch hole of shoe; 
           [0026]      FIG. 16  is a perspective view of the sole of shoe with arch rod strapless inside sole; 
           [0027]      FIG. 17  is a side perspective view of the backpack exoskeleton with user with exoskeleton legs dismantled and stored. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0028]    Referring now to the drawings wherein the depictions are for purposes of illustrating a preferred embodiment of the present invention only and not for the purpose of limiting the same.  FIG. 1  is a side perspective view of a backpack exoskeleton  100  of the present invention. The backpack exoskeleton  100 , incorporates the exoskeleton onto the frame of the backpack, on a backpack frame  110  whereby becoming a part of the backpack itself.  FIG. 1  depicts the backpack exoskeleton with the legs up whereby allowing it to function like an ordinary backpack with a backpack load  120  where items are carried. A shoulder strap right  132  and a shoulder strap left  134  held together by a should belt  130  which aids in supporting the weight of the backpack load  120  by the shoulders of the user. A waist belt  142  goes around the users waist and held together by a waist strap  140 , which aids in redistributing the weight over the waist of user.  FIG. 2  is a side perspective view of the backpack exoskeleton  100  with the exoskeleton legs down, which depicts the right exoskeleton leg consisting of a thigh rod right  170  which is connected to a knee unit, a right and a left, composed of a large right knee wheel  230  and a small right knee wheel  236  which simulates the back and forth movement of the knee. The right knee unit contains bearings, which allow for a smooth movement of the large right knee wheel  230  and the small right knee wheel  236  while carrying a heavy load. Connected to the small right knee wheel  236  is a bottom right rod  180 , which extends all the way to the ground and bending underneath the arch of the user&#39;s shoe producing an arch rod right  802 . An arch rod strap right  406  attaches to the arch rod right  802  and helps it to stay in position underneath the shoe of the user. There is also located on the large right knee wheel  230  a right knee wheel stop  235  which prevents the bottom right rod  180  from rotating too far in the wrong direction whereby preventing the hyperextension of the knee of wearer as well as directing the weight of the backpack to the ground. 
         [0029]      FIG. 2  also depicts the left exoskeleton leg which incorporates a thigh rod left  190  originates from the waist belt  142  which contains a waist pin holder left  148 . The thigh rod left  190  is connected to a small left waist wheel  224  at one end and at the other end is connected to the left knee unit composed of a large left knee wheel  240  and a small left knee wheel  246 , depicted in  FIG. 3 , which simulates the back and forth movement of the knee. The left knee unit contains bearings, which allow for a smooth movement of the large left knee wheel  240  and the small left knee wheel  246  while carrying a heavy load. 
         [0030]    Connected to the small left knee wheel  246  is a bottom left rod  200 , which extends all the way to the ground and bending underneath the arch of the user&#39;s shoe producing an arch rod left  800 . An arch rod strap left  506  attaches to the arch rod left  800  and helps it to stay in position underneath the shoe of the user. There is also located on the large left knee wheel  240  a left knee wheel stop  245  which prevents the bottom left rod  200  from rotating too far in the wrong direction whereby preventing the hyperextension of the knee of wearer as well as directing the weight of the backpack to the ground. 
         [0031]      FIG. 3  is a front perspective view of the backpack exoskeleton with legs down. There is a depiction of the waist belt unit, which consists of a waist pin holder right  144 . The waist pin holder right  144  holds a large right waist wheel  210  and a small right waist wheel  214 .  FIG. 4  in an exploded view depicts the small right waist wheel  214  connected to the thigh rod right  170  in an adjustable manner to a small right waist wheel attachment  216 . The small right waist wheel attachment  216  contains a small right attachment holes  218  and these holes are connected to the thigh rod right  170  at a thigh top right rod attachment hole  172  with a thigh top right rod pin  174  which protrudes through the thigh top right rod attachment hole  172  and correspondingly through the desired holes of the small right attachment holes  218  and is affixed by a thigh top right loop lock  176 . The thigh rod right  170  is connected at the other end to the right knee unit consisting of the large right knee wheel  230  and the small right knee wheel  236 , depicted in  FIG. 3 , which simulates the back and forth movement of the knee. The knee unit contains bearing which allows for a smooth movement of the large right knee wheel  230  and the small right knee wheel  236 .  FIG. 4  depicts thigh rod right  170  connected in an adjustable manner to a large right knee wheel attachment  232  which is connected to the large right knee wheel  230 . The large right knee wheel attachment  232  contains a large right knee attachment holes  234  and these holes are connected to the thigh rod right  170  at a thigh bottom right rod attachment hole  177  with a thigh bottom right rod pin  178  which protrudes through the thigh bottom right rod attachment hole  177  and correspondingly through the desired holes of the large right knee attachment holes  234  and is affixed by a thigh bottom right loop lock  179  at the other end. 
         [0032]      FIG. 4  depicts the bottom rod right  180  connected in an adjustable manner to a small right knee wheel attachment  238  which is connected to the small right knee wheel  236 . The small right knee wheel attachment  238  contains a small right knee attachment holes  239  and these holes are connected to the bottom rod right  180  at a bottom right rod attachment hole  182  with a bottom right rod pin  184  which protrudes through the bottom right rod attachment hole  182  and correspondingly through the desired holes of the small right knee attachment holes  239  and is affixed by a bottom right loop lock  186  at the other end. 
         [0033]    The other end of the bottom right rod  180  bends and produces the arch rod right  802 , which is connected to the arch rod strap right  406  which contains a right hook and loop fastener  806 . The arch rod right  802  positioned underneath the user&#39;s shoe and the right hook and loop fastener  806  protrudes out the other side of shoe. The right hook and loop fastener  806  connects in an adjustable manner to a right ankle hook and loop fastener  807  located on an ankle rod strap right  404  as depicted in  FIG. 12 . 
         [0034]      FIG. 3  depicts the waist belt unit, which consists of the waist pin holder left  148 . The waist pin holder left  148  holds the small left waist wheel  224  and a large left waist wheel  220 .  FIG. 4  in an exploded view depicting the small left waist wheel  224  is connected to the thigh rod left  190  in an adjustable manner to a small left waist wheel attachment  226 . The small left waist wheel attachment  226  contains a small left attachment holes  228  and these holes are connected to the thigh rod left  190  at a thigh top left rod attachment hole  192  with a thigh top left rod pin  194  which protrudes through the thigh top left rod attachment hole  192  and correspondingly through the desired holes of the small left attachment holes  228  and is affixed by a thigh top left loop lock  196 . 
         [0035]    The thigh rod left  190  is connected at the other end to the left knee unit composed of bearing rotating elements the large left knee wheel  240  and the small left knee wheel  246 , depicted in  FIG. 3 , which simulates the back and forth movement of the knee.  FIG. 4  depicts the thigh rod left  190  connected in an adjustable manner to a large left knee wheel attachment  242 , which is connected to the large left knee wheel  240 . The large left knee wheel attachment  242  contains a large left knee attachment holes  244  and these holes are connected to the thigh rod left  190  at a thigh bottom left rod attachment hole  197  with a thigh bottom left rod pin  198  which protrudes through the thigh bottom left rod attachment hole  197  and correspondingly through the desired holes of the large left knee attachment holes  244  and is affixed by a thigh bottom left loop lock  199  at the other end.  FIG. 4  depicts the bottom rod left  200  connected in an adjustable manner to a small left knee wheel attachment  248 , which is connected to the small left knee wheel  246 . The small left knee wheel attachment  248  contains a small left knee attachment holes  249  and these holes are connected to bottom rod left  200  at a bottom left rod attachment hole  202  with a bottom left rod pin  204  which protrudes through the bottom left rod attachment hole  202  and correspondingly through the desired holes of the small left knee attachment holes  249  and is affixed by a bottom left loop lock  206  at the other end. 
         [0036]    The other end of the bottom left rod  200  bends and produces the arch rod left  800 , which is connected to the arch rod strap left  506  which contains a left hook and loop fastener  808 . The arch rod left  800  positioned underneath the user&#39;s shoe and the left hook and loop fastener  808  protrudes out the other side of shoe. The left hook and loop fastener  808  connects in an adjustable manner to a left ankle hook and loop fastener  809  located on an ankle rod strap left  504  as depicted in  FIG. 12 . 
         [0037]      FIG. 5  a side perspective view of the left side of waist belt  142  of the backpack exoskeleton  100  depicting the waist belt unit consisting of the waist pin holder left  148 . The waist pin holder left  148  consists of a waist holder pin left  149 , which attaches to the waist pin holder left  148  and travels through the small left waist wheel  224  and the large left waist wheel  220  and has a waist holder pin cap left  147  at the other end whereby holding the small left waist wheel  224  and the large left waist wheel  220 . The large left waist wheel  220  contains a large left waist wheel attachment  222 , which contains a large left attachment hole  223 . A waist bridge left  160  attaches in an adjustable manner at one end to the large left waist wheel attachment  222  at a waist bridge hole left  162  with a waist bridge pin left  164  which protrudes through the waist bridge hole left  162  and correspondingly through the desired holes of the large left attachment hole  223  and is affixed by a waist left loop lock  166 . The other end of the waist bridge left  160  is movably attached to the backpack frame  110  allowing waist bridge left  160  to move horizontally. Holes are located on the backpack frame  110  one on top a top bridge left pin hole  161  of waist bridge left  160  and the other on the bottom a bottom bridge left pin hole  163  of waist bridge left  160  to keep it in a fixed vertical location but allowing it to move horizontally. A top bridge pin left  168  is inserted through the top bridge left pin hole  161  and locked in place by a top bridge left loop lock  165  and a bottom bridge pin left  169  is inserted through the bottom bridge left pin hole  163  and locked in place by a bottom bridge left loop lock  167 . 
         [0038]      FIG. 6  is a side perspective view of the right side of waist belt  142  of the backpack exoskeleton  100  depicting the waist pin holder right  144 . The waist pin holder right  144  contains with it a waist holder pin right  146 , which attaches to the waist pin holder right  144  and travels through the small right waist wheel  214  and the large right waist wheel  210  and has a waist holder pin cap right  145  at the other end whereby holding the small right waist wheel  214  and the large right waist wheel  210 . The large right waist wheel  210  contains a large right waist wheel attachment  212 , which contains a large right attachment hole  213 . A waist bridge right  150  attaches in an adjustable manner at one end to the large right waist wheel attachment  212  at a waist bridge hole right  152  with a waist bridge pin right  154  which protrudes through the waist bridge hole right  152  and correspondingly through the desired holes of the large right attachment hole  213  and is affixed by a waist right loop lock  156 . The other end of waist bridge right  150  is movably attached to the backpack frame  110  allowing the waist bridge right  150  to move horizontally. Holes are located on the backpack frame  110  one on top a top bridge right pin hole  151  of waist bridge right  150  and the other on the bottom a bottom bridge right pin hole  153  of waist bridge right  150  to keep it in a fixed vertical location but allowing it to move horizontally. A top bridge pin right  158  is inserted through the top bridge right pin hole  151  and locked in place by a top bridge right loop lock  155  and a bottom bridge pin right  159  is inserted through the bottom bridge right pin hole  153  and locked in place by a bottom bridge right loop lock  157 . 
         [0039]      FIG. 7  is an exploded view of the right knee unit in a bent position of the backpack exoskeleton  100 .  FIG. 7  depicts how the thigh rod right  170  and the bottom rod right  180  are adjustable. The thigh rod right  170  fits over the large right knee wheel attachment  232  and aligns the thigh bottom right rod adjustment hole  177  to the large right knee attachment hole  234  in the desired position wherein the thigh bottom right rod pin  178  is inserted through the thigh bottom right rod adjustment hole  177  and the desired hole of the large right knee attachment hole  234  and protrudes out the other side and is attached to the thigh bottom right loop lock  179 . 
         [0040]    The thigh rod right  170  and the bottom rod right  180  are kept close to the body by straps that are adjustably attached to the leg of user. A top rod strap right  400  is attached to the thigh rod right  170  and adjustably attached to the user&#39;s thigh and a bottom rod strap right  402  is attached to user&#39;s lower leg in an adjustable manner. An ankle rod strap right  404  is also attached to user&#39;s lower leg near the ankle to keep the bottom rod right  180  close to the user&#39;s body. The straps contain cushions attached to the straps at the position where the rods pass through to obtain a comfortable fit for the user.  FIG. 3  depicts the top rod strap right  400  contains a top rod strap cushion right  600  which is attached to the top rod strap right  400  and allows the thigh rod right  170  to pass through. The bottom rod strap right  402  contains a bottom rod strap cushion right  602  which is attached to the bottom rod strap right  402  and allows bottom rod right  180  to pass through. Also located on the bottom rod right  180  is the ankle rod strap right  404  which contains a ankle rod strap cushion right  604  which is attached to the ankle rod strap right  404  and allows bottom rod right  180  to pass through. Once the straps are all strapped onto the user&#39;s leg the exoskeleton leg will move to the user&#39;s leg movements. 
         [0041]    The thigh left rod  190  and the bottom left rod  200  are kept close to the body by straps that are adjustably attached to the leg of user. A top rod strap left  500  is attached to the thigh left rod  190  and adjustably attached to the user&#39;s thigh and a bottom rod strap left  502  is attached to user&#39;s lower leg in an adjustable manner. The ankle rod strap left  504  is also attached to user&#39;s lower leg near the ankle to keep the bottom left rod  200  close to the user&#39;s body. The straps contain cushions attached to the straps at the position where the rods pass through to obtain a comfortable fit for the user.  FIG. 3  depicts the top rod strap left  500  containing a top rod strap cushion left  700  which is attached to the top rod strap left  500  and allows the thigh left rod  190  to pass through. The bottom rod strap left  502  contains a bottom rod strap cushion left  702 , which is attached to the bottom rod strap left  502  and allows bottom left rod  200  to pass through. Also located on the bottom left rod  200  is the ankle rod strap left  504  which contains an ankle rod strap cushion left  704  which is attached to the ankle rod strap left  504  and allows the bottom left rod  200  to pass through. Once the straps are all strapped onto the user&#39;s leg the exoskeleton leg will move to the user&#39;s leg movements.  FIG. 8  depicts the right knee wheel stop  235 , which prevents the user&#39;s leg from hyperextension when the wearer&#39;s leg is extended straight whereby moving bottom rod right  180  by rotating the small right knee wheel  236  towards the right knee wheel stop  235 . The right knee wheel stop  235  also aids in directing and transferring the load carried by the backpack to the ground efficiently.  FIG. 9  depicts the right leg of the exoskeleton in a bent position where the bottom rod right  180  is not in contact with the right knee wheel stop  235 . When the user straps the thigh rod right  170  and the bottom rod right  180  on the user&#39;s leg and keep the leg in a dent position, minimal weight of the load will be transferred to the ground. 
         [0042]      FIG. 10  depicts the exoskeleton backpack  100  with wearer and the exoskeleton legs extended supporting the weight of the backpack.  FIG. 11  depicts the exoskeleton backpack  100  being worn by the user with the legs of the exoskeleton up. The exoskeleton backpack  100  can be engaged by extending the exoskeleton legs and strapping it to the wearer&#39;s legs, while being worn by the wearer, as depicted in  FIG. 10 . The exoskeleton backpack  100  can be disengaged by undoing the straps and folding the exoskeleton legs up and back into a left rod holder  302  for the left exoskeleton leg as depicted in  FIG. 11  and appropriately for the right exoskeleton leg up and back into a right rod holder  300  as depicted in  FIG. 1 .  FIG. 17  depicts the exoskeleton legs removed and stored in backpack and used later. The left exoskeleton leg is dismantled by removing the thigh top left rod pin  194  and the right exoskeleton leg is dismantled by removing the thigh top right rod pin  174 . 
         [0043]      FIG. 12  depicts the front view of backpack exoskeleton  100  with user and legs extended. The bottom rod right  180  extend underneath the shoe of the right leg of user and the arch rod strap right  406  extends out of the inside side of shoe and attached to the ankle rod strap right  404  whereby keeping the bottom rod right  180  in the proper position. The bottom left rod  200  extend underneath the shoe of the left leg of user and the arch rod strap left  506  extends out of the inside side of shoe and attached to the ankle rod strap left  504  whereby keeping the bottom left rod  200  in the proper position.  FIG. 13  depicts the bottom left rod  200  bending to travel underneath the user&#39;s left shoe.  FIG. 14  depicts the arch rod left  800  traveling along the sole of the left shoe of user and attaching to the arch rod strap left  506 . 
         [0044]      FIG. 15  is another embodiment of the backpack exoskeleton  100  with the bottom left rod  200  extending down and entering a arch hole  804  incorporated within the sole of shoe.  FIG. 16  an arch rod strapless left  802  enters whereby transferring weight of the load of backpack to the ground through the sole of the user&#39;s shoe. 
         [0045]      FIG. 17  depicts a user wearing the exoskeleton backpack with the right and left exoskeleton legs dismantled and stored in the backpack. The right exoskeleton leg is dismantled by removing the thigh top right rod pin  174  from the thigh top right rod attachment holes  172  and the small right waist wheel attachment  216 . The left exoskeleton leg is dismantled by removing the thigh top left rod pin  194  from the thigh top left rod attachment holes  192  and the small left waist wheel attachment  226 .