Is
ReboundAir™ Safe?
The Evolution of the Safety
Hinge used exclusively
on the Half-Fold ReboundAIR™
By Albert E. Carter, CEO, American Institute
Of Reboundology, Inc.I am not going to tell you the whole story of why I was in Hong
Kong in 1985, as a consultant to the Hong Kong Government to teach 7,000 fireman and
28,000 policemen how to exercise using rebounders. But a week after my presentation,
Hilton Cheon Leen, the Chairman of the Hong Kong Government summoned me into his office.
“We have accepted your
concept of rebound exercise, but your rebounder takes up too much space when it is not
being used.” He declared. He then introduced me to two government-employed mechanical
engineers and gave us instructions to report back to him within a week with a folding
rebounder.
And that we did. The rebounder
frame on the drawing had two off center hinges welded in four places and all six legs
could be folded. We developed that folding rebounder and produced thousands of them to be
used in Hong Kong.
After my three and a half months
stay teaching rebound exercise to government employees, Chairman Cheon Leen presented me
with a half fold rebounder and told me that I could produce it and sell it anyplace in the
world except Hong Kong. That is the year I introduced the Half-Folding rebounder into the
US. Although we sold thousands of them the first few years there were some problems.
I did not like that fact
that if you did not pull the frame covers off the hinges before you folded it that the
hinge would tear a hole right through the frame cover.
If you
unfolded the unit on a shag carpet the hinge would grab the shag carpet making it
impossible to lift the rebounder without ruining the carpet.
If the frame cover slipped
over the hinge while unfolding it the hinge would grab the frame cover.
 Also, it looked dangerous. I
have never heard of anybody getting their fingers caught in the hinge, and it is a good
thing because it could cause some real damage.
After receiving numerous calls
from people requesting a new frame cover because they didn’t pull it away from the
hinge I decided that something had to be done. So I bought a few pieces of balsa wood and
began to carve an acceptable hinge - one that would be friendly to the frame cover and any
fingers that accidentally got in the way.
Not being a mechanical engineer
myself, I took the new wooden hinge and the folding rebounder to the Department of
Mechanical Engineering at Brigham Young University and asked them to help me. It was a
good project for them and soon they had produced a prototype metal hinge. It had merit.
 I took the hinge with me to my
factory. The engineers actually got excited about it and with in a week had produced a
hinge that did not have to be welded. It could be inserted into the steel frame and held
in place by the clevis pins that connect the springs to the frame.
Then we tested it. We folded the
frame, and then I put my finger right on top of the hinge and unfolded the unit. The
unfolding hinge pushed my finger away!
We put the frame cover on the
frame and folded the unit and it did not hurt the frame cover at all!
The next step was to produce the
hinge. We found a casting factory that agreed to produce them for a price. So now I own
the casts for the hinge. The casts are at the foundry, but the only folding rebounders
that have the Safety Hinge are the ones with the Rebound Logo on them.
Buyer Beware:
Unfortunately, there are some
factories who copied my original Half-Folding design and are still using the old
fashioned, dangerous hinge I introduced to the United States back in 1985. |
