Carbon brush with pin for limiting movement

Details Carbon brush with pin for limiting movement Carbon brush with pin for limiting movement

1984-09-14

1985-11-12

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310245, 310249, H02K 1300

Patent

active

045530572

ABSTRACT:
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 resiliently urge the brush outwardly. An electrically conductive pin is inserted in a transverse bore in the brush and extends through the slit for movement therealong. 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.

REFERENCES:
patent: 2194620 (1940-03-01), Sekyra
patent: 2474601 (1949-06-01), Thomas
patent: 2748302 (1956-05-01), Boekel
patent: 2948795 (1960-08-01), Brinster
patent: 3339098 (1965-03-01), Burrows et al.

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