Joint device for artificial leg, method of controlling the joint device, and control unit
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United States of America Patent
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Jan 5, 2010
Grant Date -
Mar 30, 2006
app pub date -
Aug 26, 2003
filing date -
Aug 30, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is provided a joint device for an artificial leg, which makes it possible to dramatically achieve reduction of the weight of a power source and an increase in duration of the same, as well as facilitates knee bending/stretching motion, toe-up motion, and kicking motion. The joint device has an above-knee member and an under-knee member spaced from each other. Three expansible links are connected between the above-knee member and the under-knee member, for accumulating energy generated by the weight of a user's body acting on the artificial leg, and operating by releasing the accumulated energy to actuate the under-knee member into joint motion.
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