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Flat disk commutator

  • US 5,637,944 A
  • Filed: 04/12/1995
  • Issued: 06/10/1997
  • Est. Priority Date: 04/25/1994
  • Status: Expired due to Term
First Claim
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1. A commutator, comprising:

  • a unitary disk-shaped boss made from resin, said boss having an axially facing upper end face and a circumferential direction;

    a plurality of carbon segments arranged on said end face of said boss and spaced from one another by an equal spacing in said circumferential direction of said boss, which segments are insulated from each other and each of which segments has a radially outwardly facing circumferential surface having upper and lower edges; and

    a plurality of riser bars, each of which riser bars is electrically connected to a respective one of said segments;

    wherein;

    each of said segments has a projection extending radially outwardly from its radially outwardly facing circumferential surface;

    each of said riser bars is connected to a connecting plate;

    a recess is formed in each of said connecting plates and receivingly engages said projection extending radially outwardly from the radially outwardly facing circumferential surface of an associated one of said segments;

    each of said connecting plates is arranged on said outer circumferential surface of a respectively associated one of said segments and extends along a substantial portion of the distance between said upper and lower edges of said associated segment and has an inner circumferential surface electrically connected to said outer circumferential surface of said respectively associated one of said segments; and

    said boss has a circumferential portion extending axially upwardly from said upper end face of said boss, from which said riser bars project radially outwardly, which boss portion radially overlies and circumferentially surrounds parts of all of said connecting plates.

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