Electromagnetic coupling

Details Electromagnetic coupling Electromagnetic coupling

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 27/00 (2006.01) F04B 47/02 (2006.01) H02K 49/04 (2006.01)

Patent

CA 2123920

-24- Abstract An improved electromagnetic coupling apparatus is advantageously utilized in conjunction with an oil well pump assembly. The electromagnetic coupling apparatus includes rotatable inner and outer shafts. A stationary annular coil assembly is supported on the outer shaft by bearings which allow the outer shaft to rotate relative to the coil. A pole piece drum extends around the outer shaft and is effective to concentrate magnetic flux conducted from the stationary coil. A rotatable eddy current drum extends around the pole piece drum. The pole piece and eddy current drums are fixedly connected with the inner and outer shafts. The inner and outer shafts extend in the same axial direction from the pole piece and eddy current drums.

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