Patent ID: 11887800
Assignee: EATON INTELLIGENT POWER LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 1:
2. The method of claim 1, wherein the forming a plurality of arc interrupting weak spot features 43, comprises:
obtaining a copper base lead-frame 49 having a top surface 48 and a bottom surface 50;
forming a plurality of initial open holes comprising indexing holes 51 and first weak spot relief holes 53, through the thickness of the copper base lead-frame 49;
forming a plurality of ribbons 55 constructed of silver;
applying the plurality of ribbons 55 onto the bottom surface of the copper base lead-frame 49 such as to cover the first weak spot relief holes 53; and
subsequently forming a plurality of second weak spot relief holes 59 at least partially over the first weak spot relief holes 53.