(under subclass 41) Subject matter in which the frame of the spectacles (usually in the central part of the bridge or temple) may be folded or otherwise adjusted so that portions of the frame, usually the lens portions are superposed to lie one upon the other, but which are in the same plane and alignment when unfolded and opened for use.
(1) Note. The temples in the above folding spectacles may each consist of two pivotally connected folding portions, or may be made of one short piece generally not longer than the spaced lens rims. However, spectacles where the temples fold on their hinges to lie along the remaining frame structure is not provided for here but in the particular mounting subclasses below.
