US 11,887,800 B1
Welded composite fuse element and method of manufacture
Robert Stephen Douglass, Wildwood, MO (US); and Ankita Mehra, Hyderabad (IN)
Assigned to EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Filed by EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Filed on Jul. 15, 2022, as Appl. No. 17/865,719.
Int. Cl. H01H 85/38 (2006.01); H01H 69/02 (2006.01); H01H 85/00 (2006.01)
CPC H01H 85/38 (2013.01) [H01H 69/02 (2013.01); H01H 85/0013 (2013.01); Y10T 29/49107 (2015.01)] 15 Claims
OG exemplary drawing
 
1. A method of producing a silver and copper composite overlay fuse element, comprising:
preparing a composite metal material 37 constructed of silver and copper metals, comprising:
forming a plurality of strain absorbing bend features 39 constructed of copper metal; and
forming a plurality of arc interrupting weak spot features 43 constructed of a silver metal portion and a copper metal portion,
wherein a weld joint forms an overlay of the silver and copper metal portions on each of the plurality of arc interrupting weak spot features 43; and
connecting each of the plurality of arc interrupting weak spot features 43 to a corresponding one of the plurality of strain absorbing bend features 39.