FIELD: physics.
SUBSTANCE: each of the units of the hinge joint meant for joining corresponding handles with the eyeglass frame has a pair of mutually perpendicular axes of rotation for facilitating movement of the handles relative the eyeglass frame around said perpendicular axes of rotation, and a shifting element which acts around at least one of said axes of rotation to hold the handles in a stable position relative the eyeglass frame, where the shifting element is configured to return the handles to a given position.
EFFECT: possibility of complex movement between the eyeglass frame and the handle, which is capable of compensating for excessive loads applied to eyeglasses.
17 cl, 9 dwg
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|
RU2353962C2 |
