Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2004-05-14
2008-09-02
Mullins, Burton (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S242000, C310S245000
Reexamination Certificate
active
07420311
ABSTRACT:
A brush device for an electric machine having at least one brush and at least one element such as a helical, scroll, or plunger spring for pressing each brush against a rotating contact element, for example a commutator. In at least one further element for example a spring tab, counteracts a lifting of each brush away from the contact element. To this end, the spring tab is inclined at an angle, as a result of which it exerts a weaker action when the brush moves in the direction toward the contact element than it does counter to this direction. As a result, the brush can be repositioned, but is prevented from lifting away from the contact element. This also reduces the danger of vibrations.
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Rupp Bernhard
Schindler Christian
Tarek Mili
Greigg Ronald E.
Mullins Burton
Robert & Bosch GmbH
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