Mid-sole

Abstract

A mid-sole is provided for footwear in order to reduce shock more effectively while providing stability. The mid-sole includes a cap, a plurality of connection elements and supporting elements, an elastic pad, and a cover. The mid-sole is fabricated in such a way so that it can function as the structure of beams and column, such that the ground reaction force will be transferred to the columns at the time of impact, instead of at the area directly under the foot as in most of the conventional shoes. The connection elements help to transfer force at the first impact of the shoe with the ground, and guide the direction of force along the force line of the shoe. The elastic pad makes the deflection smoother, thus making the shoe more stable, and the feeling of the foot more comfortable, during running.

1 . A mid-sole comprising a cap, an elastic pad put in the cap and a cover for sealing the elastic pad in the cap.  
     
     
         2 . The mid-sole according to  claim 1  wherein the cap defines a space for housing the elastic pad.  
     
     
         3 . The mid-sole according to  claim 2  wherein the space comprises a front portion, a middle portion and a rear portion in which the elastic pad is put.  
     
     
         4 . The mid-sole according to  claim 3  wherein the cap comprises a buffer formed in the front portion of the space.  
     
     
         5 . The mid-sole according to  claim 4  wherein the buffer comprises two columns formed on the wall of the space and a beam extending from one of the columns to the other of the columns.  
     
     
         6 . The mid-sole according to  claim 5  wherein the buffer comprises two reinforcement elements each extending from related one of the columns to the beam.  
     
     
         7 . The mid-sole according to  claim 6  wherein each of the columns comprises an inclined surface from which the related reinforcement element extends.  
     
     
         8 . The mid-sole according to  claim 3  wherein each of the beams defines a recess for receiving the cover.  
     
     
         9 . The mid-sole according to  claim 3  wherein the cap comprises a plurality of ribs formed in the middle portion of the space.  
     
     
         10 . The mid-sole according to  claim 8  wherein the ribs form a grid-shaped structure.  
     
     
         11 . The mid-sole according to  claim 3  wherein the cap comprises a number of buffers formed in the front portion of the space.  
     
     
         12 . The mid-sole according to  claim 11  wherein each of the buffers comprises two columns formed on the wall of the space and a beam extending from one of the columns to the other of the columns.  
     
     
         13 . The mid-sole according to  claim 12  wherein each of the buffers comprises two reinforcement elements each extending from related one of the columns to the beam.  
     
     
         14 . The mid-sole according to  claim 12  wherein each of the columns comprises an inclined surface from which the related reinforcement element extends.  
     
     
         15 . The mid-sole according to  claim 11  wherein each of the columns defines a recess for receiving the cover.  
     
     
         16 . The mid-sole according to  claim 11  wherein the cap comprises at least one connection extending a rearmost one of the buffers to the wall of the space.