Single piece brush fixture for dynamoelectric machine

  • US 5,753,992 A
  • Filed: 11/07/1996
  • Issued: 05/19/1998
  • Est. Priority Date: 11/07/1996
  • Status: Expired due to Term
First Claim
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1. An assembly for holding one or more brushes for contacting a rotating contact of a DYNAMOELECTRIC machine, said assembly comprising:

  • a single piece brush fixture having at least one brush compartment, each of said at least one brush compartment having an interior configured to receive a brush, said brush compartment having a single open end through which said brush extends;

    at least one pair of spring coil compartments formed in said brush fixture, each spring coil compartment having an interior configured to receive a coil on one end of a constant force extension spring having two ends and a coil at each end, said interior of each of said at least one pair of spring coil compartments arranged adjacent to said open end and in open communication with each of said at least one brush compartment in order to permit the constant force extension spring to interact with the brush in said brush compartment to cause the brush to be biased toward the rotating contact;

    a cooperating shield fixture surrounding the rotating contact having an opening there through adjacent the rotating contact dimensioned to receive the brush;

    means for releaseably connecting said brush fixture to said shield fixture so that said opening in said shield is adjacent said open end of said brush compartment so that said brush extends through said opening and contacts said rotating contact;

    wherein each of said at least one brush compartment interior and each of said at least one pair of associated spring coil compartment interiors are substantially enclosed by said brush fixture and said shield fixture when said brush fixture is connected to said cooperating shield fixture and said brush extends through said opening.

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