Patent ID: 7474022

Claim:
A liquid-cooled armature bar end fitting-to-strand brazed connection, comprising: an end fitting including a main body and a cover, the end fitting having a stepped interior defining a cavity and at least a first receptacle portion extending from said cavity to an exterior of the end fitting, a peripheral side wall of said first receptacle portion being defined in part by said cover, a bottom wall of said cavity being defined at least in part by said cover; an armature winding bar strand package including a plurality of solid strands and a plurality of hollow strands arranged in a tiered array, said plurality of hollow strands having free ends that extend axially beyond corresponding free ends of said solid strands; said strands disposed in said first receptacle portion so that at least said free ends of said plurality of hollow strands extend from the receptacle portion, beyond said bottom wall, into said cavity; a peripheral side wall of said cavity being laterally spaced from said hollow strands; a braze alloy joining said free ends of said plurality of hollow strands and said corresponding free ends of said plurality of solid strands to each other and to interior surfaces of said end fitting, wherein said braze alloy comprises an isolation layer over the free ends of said solid strands and laterally over said bottom wall of said cavity to a depth above a horizontal junction between said main body and said cover.