Composite blade

Abstract

Method of manufacturing a composite blade ( 300 through 313 ) having at least two blade portions ( 101, 201 ), for a tire curing mold having the steps of providing a first strip ( 100 ) of metallic material commonly used to form blades for tire curing molds; stamping or punching out from the strip various shapes to make main blade portions ( 101 ); providing a second strip ( 200 ) of metallic material; stamping or punching out from the second strip ( 200 ) a further set of blade portions ( 201 ) having a longitudinal and lateral dimensions which are preferably at most equal to those of the first blade portions ( 101 ), assembling at least one of the first and at least one of the second blade portions ( 201 ); and affixing the different blade portions ( 101, 201 ) together.

What is claimed is:  
     
         1 . Method of manufacturing a composite blade having at least two blade portions for a tire curing mold comprising the steps of: 
 providing a first strip of metallic material commonly used to form blades for tire curing molds;    stamping or punching out from the strip various shapes to make main blade portions;    providing a second strip of metallic material;    stamping or punching out from the second strip a set of second blade portions having longitudinal and lateral dimensions;    assembling a main portion and at least one of the second blade portions; and affixing the different blade portions together to form the composite blade.    
     
     
         2 . The method according to  claim 1  wherein the blade portions are affixed by the steps of welding or soldering the blade portions together.  
     
     
         3 . The method according to  claim 1  comprising the further step of providing further strips of metallic material; 
 stamping or punching out from the further strips sets of blade portions having a longitudinal and lateral dimensions which are preferably at most equal to those of the main blade portions;  
 assembling a main and at least one of the second blade portions together with at least one of the further portions; and  
 affixing the different blade portions together.  
 
     
     
         4 . A composite blade obtained through the method of any of  claim 1 .  
     
     
         5 . The composite blade according to  claim 4  wherein the second strip of metallic material has the same thickness as the first strip.  
     
     
         6 . The composite blade according to  claim 4  wherein the metal of the second strip of metallic material has the same compositions as the first strip.  
     
     
         7 . The composite blade according to  claim 4  wherein the composite blades have any number of slots or cuts to form various projections.  
     
     
         8 . A mold including a blade according to  claim 1 .  
     
     
         9 . Tire cured in a mold according to claim  1 .