USER INTERFACE WITH CONTROLLABLE DUAL SPRING RATE RETURN TO NULL CANTILEVER SPRINGS
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United States of America Patent
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N/A
Issued Date -
Jun 18, 2009
app pub date -
Dec 17, 2007
filing date -
Dec 17, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A spring-return-to-null assembly, which may be used with various types of hand controllers or other human-machine interfaces, includes a cantilever spring and a pivot assembly. The cantilever spring is adapted to be coupled to a shaft and is configured to supply a torque thereto. The pivot assembly engages the cantilever spring and is configurable to exhibit either equal or dual spring rates, depending on the direction in which the torque is supplied to the shaft.
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