Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1981-01-23
1982-04-20
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Linear
310219, 310178, H02K 4100
Patent
active
043261370
ABSTRACT:
This invention is a low-drag electrical contact arrangement for establishing continuity between upper and lower spaced members which are subject to relative horizontal movement. In one aspect, the invention comprises an electrical commutating arrangement which includes a horizontally disposed linear electrical commutator. A horizontally movable electrically conductive pedestal is positioned below the commutator and defines a clearance therewith. The pedestal is formed with a cavity confronting the commutator. In the cavity is a bead of electrical conductive liquid, the bead being characterized by an upwardly convex meniscus portion which extends across the clearance and contacts the commutator. The surface tension of the bead is sufficient to maintain the bead intact when the commutator and pedestal are displaced horizontally at speeds from zero to at least twelve inches a minute. This arrangement provides a significant advance in highly precise machining processes, such as diamond-turning, where precision is limited by the drag imposed by conventional commutators of the carbon-brush type.
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Brown R. Jack
Gerth Howard L.
Robinson Samuel C.
Besha Richard G.
Duggan Donovan F.
Hamel Stephen D.
Lewis Fred O.
The United States of America as represented by the United States
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