Carbon brushes in sealed silicone environment with controlled va

Details Carbon brushes in sealed silicone environment with controlled va Carbon brushes in sealed silicone environment with controlled va

1985-12-06

1987-04-21

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

252 496, 310228, H02K 920

Patent

active

046599541

ABSTRACT:
A sealed enclosure surrounding the brushes and metallic contact members of a dynamoelectric machine is maintained at a positive pressure with an inert gas. A predetermined vapor pressure of a silicone lubricant is maintained in the sealed enclosure. The silicone lubricant mixes with a carbon film on the surface of the metallic contact members to produce a highly lubricating, low-resistance layer which improves the wear resistance and predictability of wear of the carbon brushes.

REFERENCES:
patent: 2703372 (1955-03-01), Savage
patent: 3283040 (1966-11-01), Stover
patent: 3772080 (1973-11-01), McKee
patent: 4241271 (1980-12-01), Johnson et al.

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