Spring drive assembly
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United States of America Patent
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Aug 8, 2000
Grant Date -
N/A
app pub date -
Aug 25, 1998
filing date -
Aug 25, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device is disclosed comprising (a) a first and second member in rotational alignment to each another; (b) a torsional resilient mechanism for providing torsional resilience between the first and second members, the torsional resilient mechanism comprising at least two or more coaxial helical springs connected in series with the inner-most spring connected to the first member and the outer-most spring connected to the second member; and (c) one or more stops for preventing at least one of said springs from winding or unwinding beyond a particular point.
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