Reduced noise commutator

Details Reduced noise commutator Reduced noise commutator

1990-09-10

1991-09-17

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310240, 310242, 310220, 310 51, H02K 1300

Patent

active

050497723

ABSTRACT:
A commutator arrangement includes a commutator member rotatably mounted on a support and including a plurality of circumferentially adjacent contact pads that are mechanically connected with one another and electrically separated from each other by respective intervening gaps, and a number of commutator brushes that are mounted on the support for only substantially radial movements toward and away from the commutator member and are biased toward the latter to establish contact between their respective contact surfaces and those of the pads. The lateral edges bounding one kind of these contact surfaces circumferentially deviate from those delimiting the other contact surface kind over at least a part of their courses such that different portions of such lateral edges are juxtaposed with their counterparts at different times during the relative rotation of the commutator member.

REFERENCES:
patent: 1861059 (1932-05-01), Johnson
patent: 3876892 (1975-04-01), Noodleman

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