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Dynamoelectric machine brush rigging

  • US 4,293,789 A
  • Filed: 09/10/1979
  • Issued: 10/06/1981
  • Est. Priority Date: 09/10/1979
  • Status: Expired due to Term
First Claim
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1. An end cap assembly for a dynamoelectric machine comprising, an end cap having bearing means adapted to receive the shaft of a dynamoelectric machine rotor, at least one brush holder extending radially of said end cap, a brush slidably supported by said brush holder, resilient means for urging said brush radially of said end cap, and an annular brush retainer having outer wall means engaging and slidably supported by internal wall means of said end cap for movement axially of said end cap, said retainer having a central opening, said internal wall means of said end cap extending axially of said bearing means, a portion of the outer wall means of said brush retainer engaging an end of said brush to hold said brush in a retracted position against the force of said resilient means, said brush retainer being axially movable toward said bearing means along said internal wall means by engagement with a dynamoelectric machine rotor when the shaft of the rotor is inserted through said central opening in said retainer and into said bearing means to thereby move said brush retainer to an assembled position in contact with said internal wall means and out of engagement with the end of said brush to permit said brush to contact a rotary current conducting means of said dynamoelectric machine rotor.

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