A cooling device has a radiator plate and a corrugated fin for cooling an electrical component. In a manufacturing process of the cooling device, a symmetrically constructed tool section presses the radiator plate and the fin against an anvil. The radiator plate has an attaching portion where an electrical...http://www.google.es/patents/US6494976?utm_source=gb-gplus-sharePatente US6494976 - Ultrasonically joining apparatus and ultrasonically joining method
Ultrasonically joining apparatus and ultrasonically joining method
