Bearing device with a primary and secondary magnetic fluid seali

Details Bearing device with a primary and secondary magnetic fluid seali Bearing device with a primary and secondary magnetic fluid seali

1995-05-16

1997-10-07

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

277135, H02K 516, H02K 708

Patent

active

056751990

ABSTRACT:
A bearing device with a primary and secondary magnetic fluid seal for use in a motor. A shaft and a frame in the motor are interconnected by a bearing. A magnetic fluid is placed in a region between the shaft and frame. The primary magnetic fluid seal is positioned above the bearing and the secondary magnetic fluid seal is positioned above the primary magnetic fluid seal to form a two-layered seal.

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