| 摘要 |
A helmet, adjustable longitudinally and laterally to fit a variety of head configurations, includes an outer shell having front and a rear shell parts, which are movably joined with one another, and an adjuster. The rear outer shell and/or the front outer shell can include first and second lateral shell portions separated by a slot. The adjuster can move the first and second lateral shell portions away from one another from a narrowed mode to a widened mode to increase the lateral dimension of the helmet. Simultaneously, the adjuster can move the front and/or rear shell to increase the longitudinal dimension of the helmet as the first and second lateral shell portions move from a narrowed mode to a widened mode. A method is also provided for effecting the longitudinal and lateral adjustments of the helmet.
|
