Electric generator or motor, brush card, has brush including central groove dimensioned to receive tongue and biasing spring is positioned between brush and proximal end of tongue

摘要

The card (12) has a non-conducting card forming a pair of parallel opposing channel edges adjacent parallel channels, where a portion of the card forms an elongated tongue rating the channels. A brush has a central groove dimensioned to receive a tongue. A biasing spring is positioned between the brush and proximal end of the tongue. The biasing spring biases the brush towards a commutator aperture (14).