Cable length sensor
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United States of America Patent
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May 19, 2009
Grant Date -
Jun 19, 2008
app pub date -
Feb 6, 2008
filing date -
Feb 23, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cable length sensor, in particular, a bowden cable displacement sensor, comprising a cable drum, a measuring cable wound on the cable drum and a return device at least lightly pre-tensioned in the start position, wherein the measuring cable may be withdrawn by rotating the cable drum against the force of the return device and by withdrawing the measuring cable the return device may be further tensioned. The return device is arranged in a housing, and coupling means for releasably coupling the return device to the rotating movement of the cable drum are provided so as to permit ready removal and replacement of the return device. Also, the housing may be provided with a sensor element operated from outside the housing for determining the current position of the return device, in particular the at least lightly tensioned starting position of the return device.
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