Insert for bellows with non-linear compression / expansion in a vacuum powered tool
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United States of America Patent
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Jun 2, 2015
Grant Date -
Dec 11, 2014
app pub date -
Sep 20, 2012
filing date -
Oct 25, 2011
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Abstract
A bellows insert (25) is shown, mountable inside a bellows for a vacuum powered tool and, in the mounted position, effective to locally limit the capacity of the bellows of compression in its longitudinal direction caused by a negative pressure introduced into the bellows. The bellows insert includes an engagement part (26) that has a shape complementary to the inside of the bellows and that, in the mounted position of the bellows insert, fills up some or all of the pleats of the bellows, within a limited area of the circumference of the bellows.
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