Switch for indicating brush wear

Details Switch for indicating brush wear Switch for indicating brush wear

1977-07-18

1978-10-17

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

200 614, G08B 2100

Patent

active

041212070

ABSTRACT:
A brush presses against the commutator of a machine, slidably movable within a brush holder, and an arm operatively associated with a switch has a roller in rolling contact with a side of the brush through an opening of the holder, such that upon sufficient wear of the brush, a resilient spring urges the roller over the trailing end of the brush to operate the switch to complete a current path.

REFERENCES:
patent: 3523288 (1970-08-01), Thompson
patent: 4024525 (1977-05-01), Baumgartner et al.

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