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US 2001/0054849 A1Published application
Electric motor
OwnerTadeusz Rybakinventor
Life of this patent
Estimating the term…
Abstract
The invention is directed to an electric motor which can be adapted to drive a variety of circularly driven apparatus which can be powered by a single of multi-phase constant frequency alternating current supply but which can provide variable speed by energising one or more discrete or linear electric motors located in an array positioned on the periphery of an annular stator and adjacent a partly annular rotor and therefore obviate the need for geared mechanical coupling of the driven element with the rotor of the electric motor.
Claims9
An electric motor comprising:
- a frame or housing around an output shaft,
- electronically energisable drive means carried by one of the frame or housing and said shaft, and
- driven means carried by the other of the housing and the shaft, wherein the drive means and driven means have co-operating adjacent faces extending radially of the shaft axis, characterised in that the drive means comprises one or more linear electric motors equally radially spaced from the shaft axis and electrically energised so as to effect relative rotation between the frame or housing and the shaft at a predetermined rotational velocity about the shaft axis in a predetermined direction.
Dependencies are inferred from the claim text.