Insole assembly for increasing weight of footwear and heavy footwear having weight-increasing midsole/outsole

Abstract

An insole assembly for increasing the weight of a footwear and a heavy footwear having an outsole and/or a midsole made of a high specific gravity compressed resin to enhance exercise effect. The insole assembly ( 100, 200 ) includes a lower insole ( 110, 210 ) made of a compressed resin having a high specific gravity; an upper insole ( 120, 220 ) laid on the lower insole ( 110, 210 ) and a shock absorbing member ( 130, 230 ) attached to a heel of the lower insole ( 110, 210 ). The insole assembly is made of a compressed resin to increase the weight of a footwear to which the insole assembly is applied.

1 . An insole assembly ( 100 ,  200 ) used for increasing the weight of a footwear comprising: 
 a lower insole ( 110 ,  210 ) made of a compressed resin having a high specific gravity; and    an upper insole ( 120 ,  220 ) laid on the lower insole ( 110 ,  210 ).    
     
     
         2 . The insole assembly according to  claim 1 , wherein the lower insole ( 110 ,  210 ) is made of a compression molded resin.  
     
     
         3 . The insole assembly according to  claim 2 , wherein the compression molded resin has a specific gravity of at least 2.  
     
     
         4 . The insole assembly according to  claim 1 , wherein the lower insole ( 210 ) has, in a top surface ( 212 ) thereof, front concave portions ( 214 ), a rear concave portion ( 218 ) and a plurality of longitudinal grooves ( 216 ) for connecting the front concave portions ( 214 ) with the rear concave portion ( 218 ).  
     
     
         5 . The insole assembly according to  claim 1 , wherein the lower insole ( 210 ) has longitudinal and lateral-grooves ( 224 ,  226 ) formed in an underside ( 222 ) thereof and concave portions ( 228 ) formed in a central portion of the underside ( 222 ) and connected with the longitudinal grooves ( 228 ).  
     
     
         6 . The insole assembly according to  claim 1 , wherein the lower insole ( 210 ) has a plurality of through holes ( 220 ) for connecting-a top surface ( 212 ) with an underside ( 222 ).  
     
     
         7 . The insole assembly according to  claim 1 , wherein the upper insole ( 240 ) has an anti-slip projection ( 252   a ) in a top front portion thereof.  
     
     
         8 . The insole assembly according to  claim 1 , wherein the upper insole ( 240 ) has vent holes ( 248 ) perforated vertically in a front portion thereof and projections ( 250 ) formed in a bottom front portion thereof.  
     
     
         9 . The insole assembly according to  claim 1 , wherein the upper insole ( 240 ) has a convex portion ( 252 ) extended longitudinally in a top central portion to support a metatarsus.  
     
     
         10 . The insole assembly according to  claim 1 , wherein the upper insole  240  has a hollow concave portion ( 254 ) formed in a bottom rear portion thereof.  
     
     
         11 . The insole assembly according to  claim 1 , wherein the upper insole ( 140 ,  240 ) has a support portion ( 142 ,  242 ) made of a hard resin for preventing the foot of a wearer from twisting and a contact portion ( 144 ) made of a thin cloth and-laid on the support portion ( 142 ,  242 ).  
     
     
         12 . The insole assembly according to  claim 1 , further comprising a shock-absorbing member ( 130 ,  230 ) attached to a rear end ( 110   b,    210   b ) of the upper insole ( 110 ,  210 ).  
     
     
         13 . A heavy weight footwear comprising: 
 a body. ( 320 ,  420 ,  520 ) for housing a foot;    an outsole ( 340 ,  440 ,  540 ) connected to the body ( 320 ,  420 ,  520 ) for supporting the foot, at least a portion of the outsole being made of a compressed resin having a high specific gravity; and    an insole laid on the outsole ( 340 ,  440 ,  540 ) within the body ( 320 ,  420 ,  520 ).    
     
     
         14 . The heavy weight footwear according to  claim 13 , wherein the whole part of the outsole ( 440 ,  540 ) is made of the high specific gravity compressed resin.  
     
     
         15 . The heavy weight footwear according to  claim 13 , wherein the high specific gravity compressed resin is inserted into the outsole ( 440 ,  540 ).  
     
     
         16 . The heavy weight footwear according to  claim 13 , further comprising a midsole ( 330 ,  530 ) laid between the outsole ( 340 ,  540 ) and the body ( 320 ,  520 ), at least a portion of the midsole ( 330 ,  530 ) being made of a high specific gravity compressed resin.  
     
     
         17 . The heavy weight footwear according to  claim 16 , wherein the whole part of the midsole ( 330 ,  530 ) is made of the high specific gravity compressed resin.  
     
     
         18 . The heavy weight footwear according to  claim 16 , wherein the high specific gravity compressed resin is inserted into the midsole ( 330 ,  530 ).  
     
     
         19 . A heavy weight footwear comprising: 
 a body ( 320 ) for housing a foot;    a midsole ( 330 ) connected to the body ( 320 ) for supporting the foot, at least a portion of the outsole being made of a compressed resin having a high specific gravity;    an outsole ( 340 ) attached to an underside of the midsole; and    an insole laid on the midsole within the body.    
     
     
         20 . The heavy weight footwear according to  claim 19 , wherein the whole part of the midsole is made of the high specific gravity compressed resin.  
     
     
         21 . The heavy weight footwear according to  claim 19 , wherein the high specific gravity compressed resin is inserted into the midsole ( 330 ).