Electric motor brush holder

Details Electric motor brush holder Electric motor brush holder

H - Electricity

02

K

310/127

H02K 5/14 (2006.01)

Patent

CA 1106894

ELECTRIC MOTOR BRUSH HOLDER Abstract of the Disclosure A frame that has a central opening through it for the commutator of an electric motor is provided with a pair of brush housings, each having a passage therethrough in which a brush is slidable. One side of each housing is provided with a longitudi- nal slot, beside which a stud projects from the frame. The cen- tral coil of a torsion spring encircles the stud and has end por- tions extending laterally toward the housing, with the free ends of the spring biased toward each other. One end of the spring engages an abutment at the inner end of the housing and the oppo- site end of the spring extends through the housing clot and into a notch in the side of the brush to hold the brush retracted in the housing passage until the end of the spring is removed from the notch and placed against the outer end of the brush to move the inner end of the brush into commutator-engaging position.

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