| 摘要 |
Relatively pivotable detent members for holding positions of adjustment in rearview truck mirrors and the like. The detent members may take the form of circular stamped plates having a central depression forming a well surrounded by a flange in which are troughlike detent formations adapted to nest in assembly and to snap into and out of interfit when the members are pivoted one relative to the other. Metal is removed in critical locations on the flange, as by formations of slots and perforations to impart a limited springiness to each flange portion or the detent formations or both.
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