Heat sink

Abstract

A heat sink is manufactured by forming a fin 2 for dissipating heat by separating a length of material from a substrate 1 while leaving the proximal end attached to the substrate 1 . The fins are cut from the substrate by stamping process using the stamping single or progressive die tooling cutting the substrate 1 along dotted line 16 . The heat sink is a unitary construction, with the fins 2 being integrally formed with the substrate 1.

1 . A method of forming a heat sink, including forming a fin for dissipating heat by separating a length of material from a substrate while leaving no the proximal end attached to the substrate.  
     
     
         2 . A method according to  claim 1 , wherein the fin is arcuate or planar.  
     
     
         3 . A method according to  claim 1 , wherein the fin extends generally perpendicularly to the plane of the substrate.  
     
     
         4 . A method according to  claim 1 , including forming a ridge in the surface of the substrate for engagement with a cutting tool to form the fin.  
     
     
         5 . A method according to  claim 4 , wherein the ridge forms the distal end of the fin.  
     
     
         6 . A method according to  claim 1 , wherein the fin is formed by single or progressive stamping processes by using the single or progressive die tooling.  
     
     
         7 . A method according to  claim 1 , including forming a plurality of said fins on the substrate.  
     
     
         8 . A method according to  claim 7 , wherein said plurality of said fins are formed in a series of spaced apart rows.  
     
     
         9 - 13  canceled