Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1989-12-19
1991-09-24
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
272 73, H02K 4900, A63B 2100, A63B 2304
Patent
active
050516388
ABSTRACT:
A combination air load and magnetic load device applies load to a rotor of an exercise machine. The rotor includes a fan wheel and an eddy current disc. A non-rotating magnet plate faces the eddy current disc and is spaced from it by an air gap. The non-rotating magnet plate includes a circumferential array of permanent magnets, their polarity orientations alternated. The eddy current load is variable by manual or automated control of the air gap between the eddy current disc and the non-rotating magnet plate. The user can reduce the load by increasing the air gap, or increase the load by decreasing the air gap. The rotating fan wheel generates air movement for cooling of operator and equipment, and a corresponding fan load on the rotor. The rotating eddy current disc induces an eddy current load on the rotor.
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Rebsch D. L.
Stephan Steven L.
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