You wrote;
> Dear Sir,
> Just to let you know a single pole magnet is used in the
> SEARLE device.
I've heard that before. One version says it is a monopole though Searl
told some friends and I that it was a spiralling magnetic field that was
literally built into the magnet by mixing various elements, using rare
earths such as neodymium.
I never heard Searl use the term monopole though as confusing as his
explanations are, including his presentation, he could well have meant
that. An idea of how to make a pseudo-monopole as is being sold in some
magnets is posted at;
http://www.mundi.com/tech.html
I have no doubt that shaped repellent fields (as in the Howard Johnson
crescent shaped magnets) can be used to produce energy if properly
arranged. Johnson said by shaping the field so that the North and South
poles tapered almost to a point, with the bloch wall being the thickest
part of the magnet, that all the energy would be focussed at those
points.
As I understand it, the idea was since the majority of magnetic force is
at the poles, if these poles were tapered, it would work like a water
hose to produce a more powerful thrust from these tapered pole tips.
Some folks say you can make all kinds of weird shaped magnets by using
ferrous powders or filings mixed in with epoxies for the desired form,
then magnetized. I don't know if anyone has tried these crescent shapes
with neodymium to see if it would improve on the widely reported Howard
Johnson motor from the early 1980s....his patent is available on the IBM
patent server at;
http://www.patents.ibm.com/cgi-bin/viewpat.cmd/5402021
As to monopoles, the only way I can see how they could be produced would
be as pseudo-monopoles where one pole was on the inside of a sphere with
the opposite pole on the outside of the sphere as in the Herb Wachspress
patent (which I could not find on the IBM patent server at but I did
find a similar one. The Whitlock spherical monopole patent is;
http://www.patents.ibm.com/details?patent_number=5517083
Since the Searl magnets were claimed to be cylindrical, they could well
have been hollow, though I've NOT seen that reported. In such a single
pole cylinder, it would present a constant repulsion to like poles and
try to push away from them, so that with the proper geometry, you might
well make a self-running magnetic device as the Minato wheel is supposed
to be (though I've not seen the term monopole used to describe operation
of his self-running bicycle wheel). His power producing device is at;
http://www.patents.ibm.com/details?patent_number=5594289
The best explanation I've heard for the Searl cylinder roller magnets
was that they had alternating polarity magnetic bands, possibly in
multiple spirals wrapped around a cylinder. The spirals would be
essentially bands with a twist. This would give a kind screwing
magnetic field pattern much like the Kawai regauging field.
My experience has been that stacked magnetics up to a point will
increase the combined strength, however beyond that, the field is
SIGNIFICANTLY REDUCED. It is possible that N/S spiralling bands could
be placed on a cylinder, but separated by small distance to prevent the
diminishing of combined magnetic force.
Yet another way is the gradient used in the Kawai patent, where the
distance between the rotor mounted magnet is increased as the rotor
spins, this gives you a 'circular force ramp'.
The trick with Kawai is based on either the weighted rotor having
sufficient momentum to throw the magnet mounted on the rotor PAST the
strongest magnetic force at the end of this circular ramp OR to add an
electromagnetic kicker to jerk it past that strongest point. Kawai
claims 300% efficiency with his design. One of his patents is at;
http://www.patents.ibm.com/cgi-bin/viewpat.cmd/5436518
but the clearest diagram is in the magnetic Wankel design at;
http://www.virtualtimes.com/writers/bearden/mageng/fig8.htm
another interesting motor design using a solenoid kicker to 'regauge';
http://www.patents.ibm.com/cgi-bin/viewpat.cmd/4196365
and the Kinnison version;
http://www.patents.ibm.com/cgi-bin/viewpat.cmd/3899703
-- Jerry W. Decker / jdecker@keelynet.com http://keelynet.com / "From an Art to a Science" Voice : (214) 324-8741 / FAX : (214) 324-3501 KeelyNet - PO BOX 870716 - Mesquite - Republic of Texas - 75187