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Brush potential curve tracer

  • US 4,687,990 A
  • Filed: 06/21/1985
  • Issued: 08/18/1987
  • Est. Priority Date: 06/21/1985
  • Status: Expired due to Fees
First Claim
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1. In a motor or generator comprising a commutator and a brush, means for determining commutating characteristics comprising:

  • first means for positioning a plurality of probes in juxtaposition with the brush and in contact with the commutator, said first means comprises a holder for said probes, said probeholder is mounted on a support for the brush, said probes are aligned with a direction of rotation of the commutator, and said probes span a distance greater than the dimension of the brush in the direction of rotation of the commutator; and

    second means associated with said probes for measuring electrical current charactersitcs of the respective probes, said second means comprises means for measuring electrical current through each of said probes and voltage

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