Sole Structure

Abstract

An improved sole structure comprises a main body, an intermediate layer, and a decorative strip. The main body, being made of fresh rubber material having good physical properties, has a bottom surface provided with anti-slip ribs and a top surface defining a recess having specific depths respectively for a heel portion and a sole portion thereof. The intermediate layer, being made of mixture of recycled materials, is shaped to conform to the recess of the main body. The intermediate layer is disposed in the recess of the main body to be heated and pressed to fill the recess of the main body. The decorative strip, being made of fresh rubber material, is bonded to the main body along the periphery of the main body without stitching threads. Therefore, the sole structure has a flat top surface, a wear resistance and anti-slip characteristics, and can provide comfort in walking.

1 . An improved sole structure of the type including a main body provided with anti-slip ribs and a decorative strip for enveloping a periphery of said main body; the improvement comprising:
 said main body, being made of rubber material having good physical properties, which has a bottom surface provided with anti-slip ribs and a top surface defining a recess having specific depths respectively for a heel portion and a sole portion thereof;   an intermediate layer, being made of mixture of recycled materials, which is shaped to conform to said recess of said main body;   said intermediate layer being disposed in said recess of said main body to be heated and pressed to fill said recess of said main body, so that the sole structure has a flat top surface, a wear resistance and anti-slip characteristics, and can provide comfort in walking.   
     
     
         2 . An improved sole structure of the type as claimed in  claim 1 , wherein a plurality of protrusions are formed on a top surface of said recess defined on said main body. 
     
     
         3 . An improved sole structure of the type as claimed in  claim 1 , wherein said intermediate layer is formed into a meshed structure according to a force applied by foot while in walking. 
     
     
         4 . An improved sole structure of the type including a preformed outsole and a decorative strip for enveloping a periphery of the outsole; the improvement comprising: said decorative strip being pre-molded of rubber material to form an integral closed element conforming to the periphery of the outsole, said decorative strip being bonded to the outsole along the periphery of the outsole without stitching threads and then being trimmed along the periphery thereof to have a neat appearance. 
     
     
         5 . An improved sole structure of the type as claimed in  claim 4 , wherein said decorative strip is molded into a curved structure having a decorative pattern thereon. 
     
     
         6 . An improved sole structure of the type as claimed in  claim 4 , further comprising an intermediate layer disposed in a recess of the outsole, said intermediate layer being formed with protrusions, ribs or a rough surface at a bottom surface thereof for ease of bonding said intermediate layer to the outsole. 
     
     
         7 . An improved sole structure of the type as claimed in  claim 4 , wherein said decorate strip is formed with a plurality of bumps or marks being equally spaced, which looks like a stitching thread.