Brush wear indicator

Details Brush wear indicator Brush wear indicator

1988-12-14

1990-04-17

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310245, 310247, 200 614, H02K 1300

Patent

active

049183486

ABSTRACT:
An apparatus for detecting the wear of a motor brush includes a spring that biases the brush towards an extended position. A portion of the spring moves along a path towards the extended position as the brush wears, wherein the spring portion makes mechanical contact with a portion of an electrical signal generating device that is disposed in the path to indicate a given amount of brush wear has occurred.

REFERENCES:
patent: 2691114 (1954-10-01), Lykins
patent: 3875436 (1975-04-01), MacFarland
patent: 4024525 (1977-05-01), Baumgartner et al.
patent: 4272695 (1981-06-01), Buchwald
patent: 4334188 (1982-06-01), Dudley
patent: 4344072 (1982-08-01), Harper, Jr.
patent: 4348608 (1982-09-01), Michael
patent: 4366404 (1982-12-01), Ziegler
patent: 4420705 (1983-12-01), Kimberlin
patent: 4488078 (1984-12-01), Orton
patent: 4761594 (1988-08-01), Rodi et al.

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