Variable force spring tapes and method of manufacture
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United States of America Patent
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May 26, 2015
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N/A
app pub date -
May 31, 2013
filing date -
Jun 4, 2012
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Abstract
A spring tape suitable for use in spring motor applications where reactive torque varies with rotational deflection. An elongate elastic element is advanced lengthwise and is laser cut into longitudinally complementary shapes which are separated and subsequently pre-stressed into rolls which are cut to length for assembly into a spring motor.
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