| 摘要 |
An ear piece having a bail joined to ear piece through fork-like members and connecting means at the end of said fork-like members on the outer circle of the ear piece and near to the packing level of said ear pieces turning means for said bail ring-shaped means carrying said connecting means, bearing means in said ear pieces supporting said ring-shaped means so that when the user wants to turn the bail over the top of his head on his neck or into another position of use, the ring means rotates in its slot with the bail and the fork-like member, while the ear pieces remain in position.
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