Opening/closing device and helmet having the same
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United States of America Patent
Stats
-
May 1, 2012
Grant Date -
Nov 26, 2009
app pub date -
May 7, 2009
filing date -
May 21, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An opening/closing device for openably/closably supports an opening/closing part with regard to an opened/closed part, and the opening/closing device is characterized in that it comprises an attaching part attached to the opened/closed part so as to rotate around a rotation axis together with the opening/closing part, a rotation part rotatably attached to an attaching portion extending from a rotation center of the attaching part and engaged with the opened/closed part, and a friction torque generation means provided between the attaching portion of the attaching part and the rotation part, as well as in that the opening/closing device is so configured that it can bring the opening/closing part to stop using free-stop function, when the opening/closing part is opened and closed with regard to the opened/closed part.
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