Ganged inside-out brushholder for dynamoelectric machine

Details Ganged inside-out brushholder for dynamoelectric machine Ganged inside-out brushholder for dynamoelectric machine

1986-02-26

1987-05-05

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310239, H02K 928

Patent

active

046635521

ABSTRACT:
A removable ganged, inside-out brushholder for a dynamoelectric machine slidably supports brushes on pairs of cylindrical brush pins which engage mating pairs of holes in respective brushes. A septum between an adjacent pair of brushes supports the ends of a pair of constant-force springs on opposite sides thereof. The constant-force springs include coiled portions which engage the upper ends of the adjacent brushes between the pairs of cylindrical brush pins thus urging the brushes into contact with the surface of a collector ring. All surfaces of brushes in the vicinity of the collector ring are open for air cooling in this critical region. In addition, at least one full surface of each brush is fully exposed for air cooling and a predetermined amount of free space is provided between adjacent brushes and between each brush and a back plate for permitting substantial air flow thereover.

REFERENCES:
patent: 2492770 (1949-12-01), Stark
patent: 3387155 (1968-06-01), Krulls
patent: 4329611 (1982-05-01), Ohmstedt et al.

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