Controllable load apparatus
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United States of America Patent
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Aug 18, 2009
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N/A
app pub date -
Dec 1, 2005
filing date -
Nov 12, 2002
priority date (Note) -
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Abstract
The invention relates to a controllable load apparatus for use in machines for resistive exercise training of the human body. The apparatus comprises a pneumatic cylinder (10) having a piston (12) acting on a fluid and a piston rod (14), the piston/cylinder unit (10, 12) being operated on by a person undergoing training. A pressure accumulator (20) is connected to, and pressurizes the piston/cylinder unit (10, 12) at a predetermined pressure during exercise via a pneumatic control circuit (42). Once a predetermined pressure threshold is reached, a valve means operates to prevent further fluid being available for charging the accumulator (20).
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