Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1984-08-07
1986-11-25
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Linear
310 27, H02K 4102
Patent
active
046251324
ABSTRACT:
A linear motor of the type having an elongated stator contained in a U-shaped channel includes a linearly moving element connected to its load by a connecting beam which passes out of the U-shaped channel. A flexible seal on each arm of the U-shaped channel seals against the sides of the beam where it passes out of the U-shaped channel and opposed elements of the seal abut each other to provide a barrier in other areas. In one embodiment of the invention, a positive pressure of a clean gas is maintained within the sealed U-shaped channel to prevent entry of atmospheric contaminants. In another embodiment of the invention, the seal in the vicinity of the beam is purposely made less than perfect so that the cooling gas is encouraged to flow toward, and exit in the vicinity of, the region where maximum cooling is required. In a further embodiment of the invention, channels in the beam and the moving element direct a controlled flow of cooling gas between the stator and the moving element to concentrate the cooling gas in that location.
REFERENCES:
patent: 3681630 (1972-08-01), Sutton
patent: 4016441 (1977-04-01), Herr et al.
patent: 4115712 (1978-09-01), Guimbal
patent: 4151447 (1979-04-01), Von der Heide
patent: 4166284 (1979-08-01), Daniels
patent: 4172229 (1979-10-01), Guimbal
patent: 4227100 (1980-10-01), Ezebiel et al.
Anorad
Duggan Donovan F.
Morrison Thomas R.
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