H - Electricity – 01 – F
Patent
H - Electricity
01
F
310/62
H01F 7/16 (2006.01) H02K 33/16 (2006.01)
Patent
CA 1309449
Abstract of the Disclosure Disclosed is a dual working airgap force motor. A centrally located stator includes two toroidally shaped electromagnets wherein the axis of the stator coincides with the axis of the toroids, each toroidal coil is separated from the other toroidal coil by an axial distance. Toroidal permanent magnets are also mounted preferably inside the toroidal electromagnet coils and also spaced apart in an axial direction. The permanent magnets generate a flux flow in opposite axial directions whereas, upon energization, the toroidal coils generate flux flow in the same axial direction at a given radial position. Two armatures are located on an output shaft, in a preferred embodiment at either end of the stator, and each armature is spaced apart from the stator by inner and outer axial airgaps. Energization of the coils with current causes a greater flux flow across the inner and outer airgaps at one end than is caused through the inner and outer airgaps at the other end tending to reduce the airgap at the end with the largest flux flow consequently causing movement of the respective armatures and the output shaft upon which they are mounted.
595482
Ridout & Maybee Llp
Saia-Burgess Inc.
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