[at-l] [Fwd: ScienceDaily: Bungee-powered Backpack Can Lighten Your Load, Researcher Says]

[Jim Bullard]

The wires aren't in the CAD image so I suspect they were part of the
monitoring equipment used to determine the load carrying advantage. As
you walk, you and the frame move up and down slightly but the spring
mounted pack stays at the same level relative to the ground so you get
the advantage of not lifting that weight each time you go up or having
the weight shock to your knees each time you come down. To work
properly it would have to be tuned to that weight of the pack. I
suspect that is the function of the center doohickey (the canister
with the green line running down from it on the CAD drawing
<http://news.nationalgeographic.com/news/2005/09/images/050908_backpack.jpg>).

On 1/5/07, Steve Landis <s.landis at comcast.net> wrote:
> Just catching up, been away for the Holidays.  Here are two pics - lots
> of cables or wires?
> http://www.upenn.edu/pennnews/photos/841/841.jpg
> http://news.nationalgeographic.com/news/2005/09/images/050908_backpack.jpg
>
> Steve
>
> Jim Bullard wrote:
> > Cool! I need one of those. I'm fond of carrying my photo gear which
> > adds up quickly. With one of those I could carry up to 12# of photo
> > gear with the same effort as no photo gear but a lot more fun.
> >
> > On 12/28/06, lurker <lurker at lanset.com> wrote:
> >
> >> I thought this might be of some little interest.
> >>
> >> Lurker
> >>
> >> <URL: http://www.sciencedaily.com/releases/2006/12/061221075110.htm >

-- 
Jim Bullard