O.U. Magnet force shielding 1

[Floor]

This design goes back to 2017.
Some folks are well aware of it, since that time.
Others missed out on it.

Out put
1.
740 g at 1/2 inch
700 g at 9/16
650 g at 5/8
600 g at 5/8
550 g at 11/16
500 g at 3/4
450 g at 13/16
400 g at 7/8
350 g at 31/32
300 g at 1 1/16
250 g at 1 3/16
200 g at 1 5/16
150 g at 1 5/8
100 g at 1 3/4
50 g at 2 9/16

input
2.
Shield out < 5 grams by 2 inches
input
3.
Shield in < 5 grams by 2 inches

out put
4.
Return of out put magnets to starting position is also an out put /
a net gain in energy as mechanical work.

As a very conservative set of calculations, this is a 20 input to 600 out put ratio
or 30 X unity.

      floor

[Floor]

4 and 1/2 minute video

  @
https://www.dailymotion.com/video/x81ld01

   best wishes
         floor

[Floor]

SO LETS TEAR THIS THING APART NOW.

Out put
1.
740 g at 1/2 inch
700 g at 9/16
650 g at 5/8
600 g at 5/8
550 g at 11/16
500 g at 3/4
450 g at 13/16
400 g at 7/8
350 g at 31/32
300 g at 1 1/16
250 g at 1 3/16
200 g at 1 5/16
150 g at 1 5/8
100 g at 1 3/4
50 g at 2 9/16      =  412 work units
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
The last quarter inch of travel, when the shield is in, is in attraction.
An additional 1/4 inch would be available, except that the magnet holding
fixture interferes.
             unaccounted for
With out the thickness of the shield magnet fixture (in the way)
OUTPUT travel (while the shield is in) would have an additional 1/4 inch of
OUTPUT travel (while the shield is in) and (while force is at or near maximum).
                  also
             unaccounted for
With out the thickness of the shield magnet fixture (in the way), the main
output (while the shield is out) would have an additional 1/4 inch of OUT PUT
travel (while at or near to the maximum force is available).
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
When the shielding magnet is positioned / optimized (up and down) for
        VERY NEAR TO ZERO INPUT AGAINST  MAGNETIC FORCE
during insertion and / or removal...   

There is a repulsion force present (at the distal range of travel) while the shield
magnet is in place.  This force gives rise to the need for an INPUT in order to return
the out put magnet to its start position.
              but...
That force reverses direction (changes to attraction) as the OUTPUT magnet becomes
near to the shield magnet.
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
When the device is operated such that the output travel range is limited to around 5/8
of an inch, output occurs when the shield is removed and then again when the
shield is restored.

With modification of the output magnet holding fixture, the range of travel would
become, 7/8 inch (5/8 + 1/4).

With first an average force of > 607 grams over the 7/8 inch travel, then
an average force of around > 150 grams over 1/2 inch of travel, while an
additional 3/8 inch of travel is at neutral force.

In this mode of operation, and when considering that both shield installation
and  removal can actually approach zero work against magnetic forces, the device
becomes, in this context almost pure O.U..

   best wishes
        floor

[Floor]

Given that an ideal operation is not achievable, still I think
a ratio of somewhere from 10 to 15  to 1 is realistic (Output to input).

[Floor]

Output strokes of any length can be arrived at.