Patent Publication Number: US-2006000112-A1

Title: Double head sleeper structure

Description:
BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      Sleepers are a necessity for daily life and it provides convenience and comfort. In recent years, living standard is significantly improved.  
      2. Description of the Related Art  
      Sleeper design tends to be versatile and improving. However, current sleeper design limits the use to one direction, so users have to watch for shoe head direction before wearing shoes. This certainly causes some inconvenience  
     SUMMARY OF THE INVENTION  
      To improve quality of life and increase convenience, the inventor improved the current drawbacks for shoes and came up with a new shoe design. It is a double head shoe structure. When wearing or removing shoes, the user does not need to pay attention to shoe head direction. This design brings in much convenience by saving time and labor. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  is a three-dimensional illustration for the invention.  
       FIG. 2  is the side view of the attachment of one shoestring end to the shoe side.  
       FIG. 3  is the three-dimensional illustration for another preferred example of the invention.  
       FIG. 4  is the side view of the attachment of one shoestring end to the shoe side for another preferred example of the invention.  
       FIG. 5  is an illustration of the status when one foot is in one shoe of the invention.  
       FIG. 6  is an illustration of the status from a side view when one foot is in one shoe of the invention. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
      Please refer to  FIG. 1 . The double head shoe structure in the present invention mainly comprises a shoe body  1  and two crossing shoestrings  2 .  
      The shoe body  1  appears semicircular at both ends and a little concave in the middle of two sides. The length of shoe body  1  varies in three levels: large, medium and small to meet different user&#39;s need.  
      The shoestring  2  length is four fifth of the shoe body  1  length. The two shoestrings  2  cross with each other at the center of the shoe surface  11  of the shoe body  1 . The two ends  21  of the shoestring  2  attach the two opposite sides of shoe body  1  at a position two third of the shoe body  1  length from the shoe end.  
      The attachment of the two ends  21  of the shoestring  2  is shown in  FIG. 1  and  FIG. 2  and is a direct clamping in a slot  13  between the shoe surface  11  and the shoe bottom  13 . Alternatively, the attachment as shown in  FIG. 3  and  FIG. 4  can be a direct placement into a through hole  14  from shoe surface  11  to shoe bottom  12 . The slot  13  (as position A in  FIG. 2 ) or the through hole  14  (as position B in  FIG. 4 ) is a little larger than the shoestring  2  width, so it allows the shoestring  2  to move around at a small angle, which also facilitates the movement of the crossing point of the shoestrings  2 . Besides, the design also allows the foot  3  to have some maneuvering space in the net of the shoestrings  2  (as shown in  FIG. 5 ). This allows more comfort for the foot  3  in the sleeper (as shown in  FIG. 6 ).  
      Therefore, the user does not need to watch for the shoe head direction before putting feet  3  in the shoe body  1 . The foot  3  can go into the shoe body  1  from either end and force the crossing point of the shoestrings  2  to move a little forward. The shoes finally look just like traditional design to cover the feet. The shoes also provide the user with required sturdiness and comfort.  
      In summary, the double head shoe structure in the invention does provide a way to overcome the drawbacks for traditional sleeper design, so it does not need to watch for shoe head direction. It provides timesaving convenience and certainly possesses progressiveness and commercial value.