This is an old idea. Monroe has a patent in recent times for the same
thing, but even before that other versions were tried (Borgia, Worthington,
etc.) Garron's is probably the best at least in terms of basic concept.
The Monroe patent can be seen at:
http://l2.espacenet.com/dips/viewer?PN=US3670189&CY=gb&LG=en&DB=EPD
(click the link to go to a pdf of the actual patent)
US3670189: GATED PERMANENT MAGNET MOTOR
A self-starting permanent magnet motor, particularly a type which will
operate on batteries, or alternate half cycle current, consisting of a fore
and aft stator assembly. Both fore and aft stator assemblies embody an
identical number of permanent magnets of preferred ceramic material and
high permeability soft iron inductors, combined into hybrid magnetic poles.
A multi-pole permanent magnet rotor, having permanently fixed north and
south poles is sandwiched between the fore and aft stator assemblies on a
rotatable shaft. The rotor is caused to rotate, due to a gating action
which alternates the poles one complete cycle with each transverse passing
of the rotor poles between the stator poles. Because of this action, fifty
per cent of the energy required to do a specific amount of work is derived
from the peak energy product of the permanent magnets.
The Garron patent can be seen at:
http://www.patents.ibm.com/details?&pn=US04132911__
US4132911: Electric motor with permanent magnets combined with
electromagnets
An electric motor which includes in the stator or the armature or both one
or more assemblies of an electromagnet and permanent magnet contained in
the same a magnetic flux circuit. The electromagnet is periodically
energized from a battery or other appropriate electric current source by
switch means comprising a commutator or the like on the armature whereby
the enclosed magnetic flux circuit is nullified or otherwise disrupted and
the permanent magnet is caused to react and create relative movement with
further magnetic means in the stator or armature, the armature being
thereby rotated. The windings for the electromagnets may be located near
the center of the armature, or in the stator, the windings may be
substantially spaced from the armature if desired.
Fred
>
> here is something you might be all interested in,
>
> http://www.lisp.com.au/~rstankey/concept/HEEM.htm
>
> have fun
> Hans von Lieven
>
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