Brush holder and rigging assembly for a dynamoelectric machine
AssigneeGeneral Electric Company
InventorAdolph J. Gehring, Jr.
Life of this patent
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Abstract
A dynamoelectric machine having a rotatable commutator and a plurality of brushes mounted in brush holders is provided with a rigging assembly that operates to prevent the commutator from being forced into contact with the brush holders when the machine is subjected mechanical shocks. The brush holders are mounted on a yoke member that is resiliently biased to a predetermined spacing relative to the commutator. A limit stop on the yoke member is positioned to contact a spacer ring on the commutator when a mechanical shock forces the commutator toward the brush assemblies, thereby to prevent the commutator from contacting the brush assemblies.
Claims11
An improved brush rigging assembly for use with a dynamoelectric machine having a stator member and a rotor member, said rotor member including a plurality of commutator segments forming a cylindrical commutator member, comprising:
- a. a yoke member having a surface concentric with a surface of the rotor;
- b. a plurality of brush holders mounted on the yoke member;
- and
- c. means for resiliently mounting the yoke member to the stator so that the brush holders are normally spaced a distance, a, from the commutator segments and so that the yoke member surface is normally spaced a distance, b, less than the distance, a, from said rotor surface whereby when the dynamoelectric machine is subjected to a high shock force the rotor surface contacts the yoke surface which prevents the brush holders from coming in contact with the commutator segments.
An improved brush rigging assembly for use with a dynamoelectric machine having a stator member and a rotor member, said rotor member including a plurality of commutator segments forming a cylindrical commutator member, comprising:
- a. a fixed yoke member rigidly attached to the stator of the dynamoelectric machine,
- b. a movable yoke member having a surface concentric with a surface of the rotor,
- c. a plurality of brush holders mounted on the movable yoke member, and
- d. means for resiliently mounting the movable yoke member to the fixed yoke member so that the brush holders are normally spaced a distance, a, from the commutator segments and so that the movable yoke member surface is a distance, b, less than the distance, a, from said rotor surface whereby when the dynamoelectric machine is subjected to a high shock load the rotor surface contacts the movable yoke surface which prevents the brush holders form coming in contact with the commutator segments.
Dependencies are inferred from the claim text.