Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1993-03-03
1995-11-14
LaBelle, Clayton E.
Electrical generator or motor structure
Dynamoelectric
Rotary
310251, H02K 1300, H01R 3918, H01R 3924
Patent
active
054669790
ABSTRACT:
Methods and apparatus to reduce wear on surfaces in sliding contact by inducing vibratory movement in one or more of the surfaces. The movement is substantially perpendicular to a plane of contact between the surfaces and substantially nonuniform across the area of contact. The nonuniform vibratory motion of one surface with respect to another results in small rotational vibration of one surface with respect to another even as contact is maintained between the surfaces. Rotational motions tend to decrease surface wear due to thermal mounding by moving the zone of actual contact with time; rotational motions also open temporary gaps between the surfaces which allow the escape of wear particles, thus decreasing subsequent abrasive wear. The invention may be applied to sliding electrical contacts, either linear or rotating, and to sliding frictional contacts, as in brakes and clutches. Application of the invention reduces wear on electrical contacts while maintaining electrical continuity, and reduces wear on brake system components without substantially reducing effective braking force.
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Bryant Michael D.
Lin Jau-Wen
Board of Regents, The University of
Labelle Clayton E.
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