Slip ring assembly and method of making

Claim 1

A slip ring assembly for mounting on a rotatable rotor shaft of an electrical apparatus having relatively fixed brush means, comprising: an electrically non-conductive one-piece injection molded body defining an axial bore for receiving said rotor shaft therein, said body defining first and second axially spaced outer peripheral surfaces separated by a relatively enlarged circumferential land, said first peripheral surface including a first axially extending channel, said second peripheral surface including a second axially extending channel; first and second electrically conductive annular slip ring members respectively positioned on said first and second peripheral surfaces of said body, said slip ring members being positioned for electrical contact with said brush means; and first and second electrically conductive terminals, said first terminal being electrically joined to said first slip ring member and extending from within said first channel outwardly of an end of said body adjacent said first slip ring member, said second terminal being electrically joined to said second slip ring member and extending from within said second channel, through said body inwardly of said first slip ring member, and outwardly of said end of said body, said molded body defining an axially extending internal passage positioned inwardly of said first slip ring member, said second terminal extending through said internal passage and being electrically insulated from said first annular slip ring member by an integral portion of said one-piece body which said portion is positioned between said second terminal and said first annular slip ring member, said second axially extending channel having a radially inward surface which is radially aligned and generally contiguous with a radially inward surface of said axially extending internal passage, said radially inward surface of said second channel being spaced inwardly of at least a portion of said second terminal.