Hi Rick.
Basically I got the idea for the moving bottom
scuba tank from thinking about how a stick deodorant tube or a woman's lipstick
tube works.
Thinking about how the bottom moves up as you use
them. But after I wrote that post I started thinking
that the water pressure wouldn't automatically move
the bottom upwards because there would still be too much pressure in the
tank
even with it appraoching empty for the water
pressure to move the bottom upwards without some sort of mechanical
device or hydraulic device to force the bottom
upwards like a woman's lipstick tube will not raise unless the bottom is
cranked
mechanically . It was a scuba tank idea I had that
I wrote about without totally thinking it thru.
Oh well, at least it might
work for ballast tanks even though it wouldn't be
practical for a scuba tank. Like you said, one of those napkin sketch
thoughts over coffee,
sometimes they are good ideas, sometimes not.
Plenty of napkins though. Grin.
Bill Akins.
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