Brush wear indicator

Details Brush wear indicator Brush wear indicator

1980-09-04

1982-09-07

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310245, H02K 1300

Patent

active

043486088

ABSTRACT:
A brush wear indicator for an electrical machine including a holder for slidably mounting a brush, a self-winding, brush-biasing spring having one of its ends mounted in generally fixed operative relationship on the brush holder in combination with an indicating means electrically connected to either a contact, or a membrane switch, mounted on the relatively fixed end of the brush-biasing spring in a position such that it is contacted by a coiled portion of the spring responsive to the occurrence of a predetermined degree of brush wear. Such engagement is effective to actuate the signal means to indicate the predetermined degree of brush wear.

REFERENCES:
patent: 2691114 (1954-10-01), Lykins
patent: 3523288 (1970-08-01), Thompson
patent: 4024525 (1977-05-01), Baumgartner
patent: 4121207 (1978-10-01), Jones
patent: 4166227 (1977-09-01), Guglielmo
patent: 4172988 (1979-10-01), Lowther
patent: 4272695 (1981-06-01), Buchwald

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