System and method for fixing a position of a steering column
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United States of America Patent
Stats
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Jul 8, 2014
Grant Date -
Dec 6, 2012
app pub date -
Oct 25, 2011
filing date -
Jun 3, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A position lock for an adjustable steering column comprises a plurality of discs stacked for rotation on a control shaft and engaged to a gear profile of a stationary bracket. The discs are engaged to the gear profile so as to be caused to rotate relatively to one another as the steering column undergoes movement in the relevant direction. The discs are configured to resist rotation relative to one another when subjected to a compressive load, and the control shaft is engaged to a cam for selectively applying a compressive load to the discs. A method for selectively controlling motion of a steering column comprises coupling motion of the steering column to the relative movements of a plurality of discs, constraining the discs to rotate relative to one another as the steering column undergoes motion in the relevant direction, and selectively adjusting resistance to relative rotation the discs.
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