Carbon brush assembly

Details Carbon brush assembly Carbon brush assembly

H - Electricity

01

R

310/127

H01R 39/40 (2006.01) H01R 39/26 (2006.01) H01R 39/36 (2006.01) H01R 39/41 (2006.01)

Patent

CA 1224237

ABSTRACT OF THE DISCLOSURE A carbon brush assembly comprises a brush box having a slit along one side thereof, and a carbon brush slidably mounted in the brush box with a spring connected between the brush box and the brush to re- siliently urge the brush outwardly. An electrically conductive pin is inserted in a transverse bore in the brush and extends through the slit for movement there- along. A brush lead is electrically connected to the pin and a stop associated with the slit adjacent the outer end thereof. The stop forms a closed end of the slit for limiting movement of the pin therealong under the influence of the spring, and so retaining the pin in the slot when said brush wears out. Preferably, the brush is formed with breaking incisions in its sides adjacent the pin to enable the protruding end of the brush to break off and interrupt electrical connection with a commutator when the brush has worn to the end of its useful life.

463731

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