| 摘要 |
Protective Hockey Helmet Wm. H. Carveth A helmet that prevents catastrophic neck injuries; in the preferred embodiment, for hockey, a high-impact plastic casing is snugged on top of the player's head by cantilever supports from the inside sides of the casing; a flange at the bottom of the casing is formed so that a collision such as a head-on collision on top of the head will drive the helmet into contact with the torso, thus transmitting all collision torso to the torso. The top of the helmet is high enough that the top of the head does not contact the underside of the top of the helmetunder the peak collision force. Further, in the most dangerous high-incident-angle collisions, a tip projecting rearwards from the top of the helmet, in conjunction with rollers on the top surface, act to position the helmet for symmetrical transmission of force axially. A second embodiment, without the tip and rollers, is also described, as is a third with a rear extension segment to prevent the flange from contacting the back of the neck in cases of rearwards flexure of the neck.
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