Electric Motors
OwnerAnthony Freakesinventor
Life of this patent
Estimating the term…
Abstract
Electric motors are disclosed with coils which induce a magnetic flux field which by its relationship with ferromagnetic poles provide the motoring force without use of an auxiliary magnetic field. The motors may be employed with fixed or pivotably mounted brushes. Pivotable brushes for electric motor brushes are disclosed.
Claims21
An electric motor comprising a rotor core and rotor coils disposed around the rotor core, a commutator and a stator ring, the motor having no auxiliary magnetic field, wherein the rotor coils when energized produce a magnetic field which is misaligned with the central plane of the poles of the stator ring to produce a torque to turn the rotor core, wherein the magnetic field produced by the rotor coils is the only magnetic field operable to turn the rotor core.
An electric motor comprising at least one rotor core having two rotor coil banks disposed around the at least one rotor core, a commutator and two stator bars disposed parallel to a long axis of the rotor core, the motor having no auxiliary magnetic field, wherein the rotor coil banks when energized produce a magnetic field which is misaligned with the central plane of the poles of the stator ring to produce a torque to turn the rotor core, wherein the magnetic fields produced by the rotor coil banks are the only magnetic fields operable to turn the rotor core.
An electric motor comprising a rotor core, a commutator and a stator ring having stator windings disposed around the stator ring, wherein the stator windings when energized produce a magnetic field which is misaligned with the central plane of the poles of the rotor core to produce a torque to turn the rotor core, wherein the magnetic field produced by the stator windings is the only magnetic field operable to turn the rotor core, the motor having no auxiliary magnetic field, and wherein the commutator and stator ring are stationary.
A brush assembly for an electric motor comprising a brush and a spring, the brush operable to pivotably connect at one end to a motor part which is fixed relative to the brush, the spring operable to connect at one end to the brush and at another end to a motor part which is fixed relative to the brush, the brush having a free end positionable to contact a commutator.
Dependencies are inferred from the claim text.