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US 6,661,137 B2Granted
Drive element such as a driving wheel or a hoisting winch, the element comprising a synchronous motor
AssigneeMoteurs Leroy-Somer
InventorPascal Gauthier
Life of this patent
Estimating the term…
Abstract
The present invention relates to a drive element such as a driving wheel for a goods-handling cart or the like, or such as a hoisting winch, the drive element comprising a wheel or a drum and an electric motor for rotating the wheel or the drum. The electric motor is a synchronous motor having a permanent-magnet rotor and a stator comprising teeth and respective individual windings on said teeth.
Claims30
A driving wheel element, comprising:
- a wheel;
- and
- an electric motor for rotating the wheel, wherein the electric motor is a synchronous motor having a stator comprising teeth deprived of pole shoes and respective individual windings on said teeth and a permanent-magnet flux-concentrating rotor comprising pole pieces and magnets disposed radially between the pole pieces.
A hoisting winch, comprising:
- a winch;
- and
- an electric motor for rotating the winch, wherein the electric motor is a synchronous motor having a permanent-magnet rotor and a stator comprising teeth deprived of pole shoes and respective individual windings on said teeth.
A driving wheel element, comprising:
- a wheel;
- a synchronous electric motor for rotating the wheel, said electric motor comprising:
- a stator comprising teeth deprived of pole shoes and respective individual windings on said teeth;
- and
- a permanent magnet rotor;
- a stepdown gearing coupling the motor to the wheel, said stepdown gearing comprising:
- an epicyclic gear train comprising:
- a planet carrier, said planet carrier being in a fixed position relative to the stator;
- at least one planet wheel rotating on the planet carrier;
- and
- a ring being in a fixed position relative to the wheel, said at least one planet wheel intermeshing with the rotor and the ring to transmit rotation of the rotor to the wheel.
8 more elements
Dependencies are inferred from the claim text.