Wear-proof détente for folding mirrors
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United States of America Patent
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Feb 17, 2009
Grant Date -
Jul 19, 2007
app pub date -
Feb 18, 2005
filing date -
Feb 18, 2004
priority date (Note) -
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Abstract
A folding assembly for a vehicle side mirror that employs specialized ramped detentes. The folding assembly includes a pivot tube and a pivot spring rotatably coupled to a case frame and rigidly coupled to a base frame. The base frame includes a series of ramped detentes that are seated within corresponding recesses in the case frame. The inside angle (.beta..sub.1) of the ramps of the detentes is steeper than the outside angle (.beta..sub.2) of the ramps of the detentes according to a predetermined formula so that when the case frame is rotated relative to the base frame, and the detentes move out of their recesses, the force of the rotation is distributed along the entire length of the ramp to increase the durability performance of the mirror and thus its longevity.
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