| 摘要 |
A helmet for receiving a compatible visor comprises a shell and two guiding mechanisms. Each guiding mechanisms is located on a different side o f the shell and is adapted to receive the compatible visor. The guiding mechanisms guide the compatible visor along a confined path extending from a retracted position, where the compatible visor is proximate a frontal portion of the shell and substantially outside a field of view of the wearer, to a deployed position where the compatible visor is substantially below a frontal lower edge and within the field of view of the wearer. The guiding mechanisms guide at least a lower portion of the compatible visor substantially towards a rear portion of the shell when the compatible visor is in the deployed position. The compatible visor has a lens, a face adaptor and one mounting interface on each side of the lens.</S DOAB>
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