Electromagnetic clutch with flux-equalized rotating member

Details Electromagnetic clutch with flux-equalized rotating member Electromagnetic clutch with flux-equalized rotating member

1989-07-11

1990-11-27

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

192 84C, 310256, H02K 7108, F16D 2710

Patent

active

049738704

ABSTRACT:
An electromagnetic clutch is disclosed which includes a rotor having a friction surface and an armature plate having a friction surface. Both friction surfaces face each other. An annular friction member of non-magnetic material is fixedly disposed on the friction surface of the armature plate. The thickness of the annular friction member is gradually decreased from its radially-outer edge to its radially innermost edge, thereby preventing the restriction of the number of magnetic lines of flux which radially penetrate through the armature plate. The decreasing thickness increases the magnetic attraction between the armature plate and the rotor without increasing the weight of the electromagnetic clutch.

REFERENCES:
patent: 2650682 (1953-09-01), Oetzel
patent: 3324982 (1967-06-01), Mason et al.
patent: 3371758 (1968-03-01), Stuhlmiller
patent: 4227600 (1980-10-01), Shirai
patent: 4446203 (1984-05-01), Okubo et al.
patent: 4635774 (1987-01-01), Sekiguchi et al.
patent: 4828091 (1989-05-01), Gustin

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