Slip ring or commutator motor

A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising:

• a brush including:
• a stator side;
• a top surface;
• and
• a bottom surface, and
• being pivotable about an axis parallel to the one of the commutator's axis and the slip rings's axis;
• a guide pin;
• and
• a brush compression spring exerting a force pressing the brush's bottom surface on an edge surface of the one of the commutator and the slip ring, and a pivotably holding the brush;
• wherein the brush is provided with a slot, open to an edge surface of the one of the commutator and the slip ring, and running in the direction of the force exerted by the brush compression spring, and wherein the guide pin is sized to be inserted into said slot.

A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising:

• a brush including:
• a stator side;
• a top surface;
• and
• a bottom surface;
• and
• holders, pivotably supporting the brush about an axis parallel to the one of the commutator's rotation axis and the slip ring's rotation axis;
• and
• a single-piece stamped and bent part including:
• a brush compression spring exerting a force pressing the brush's bottom surface against an edge surface of the one of the slip ring and the commutator;
• and
• a brush box including integrally formed pivoting holders and engaging the brush's holders to hold the brush.

A brush assembly, for use in one of a slip ring motor having a slip ring rotating about an axis and a commutator motor having a commutator rotating about an axis, comprising:

• a brush including:
• a stator side;
• a top surface;
• a bottom surface;
• a front surface;
• a back surface;
• and
• a side surface opposite said stator side, and being pivotable about an axis parallel to the rotation axis of the one of the slip ring and the commutator;
• a brush compression spring including,
• retaining parts projecting from an area adjacent to the brush's stator side;
• and
• tangential supporting parts abutting the brush's front and back surfaces in a vicinity of the one of the slip ring and the commutator, said tangential supporting parts also being parallel to the axis of the one of the commutator and the slip ring exerting a force, and pressing the brush's bottom surface against an edge surface of the one of the slip ring and the commutator.