Ned Simmons wrote in
:

On Thu, 11 Aug 2011 14:41:06 -0700 (PDT), wrote:
snip
Volute springs can be wound so there's tight contact between the
turns. The resulting friction is what makes them better dampers than
coil springs. "Friction springs" are an interesting alternative to
volute springs, or hydraulic shocks, and also use friction to absorb
kinetic energy.
http://www.ringfeder.com/en/america/...NGFEDER/?p=742

Thanks! I'd never seen these before. I have no idea if I would ever find
a use for them, but it's a slick idea. That takes care of my "learn
something new every day" quota.

Doug White