| 摘要 |
FIELD: safety.SUBSTANCE: collapsible helmet comprises shell 1 having two or more components which are hinged together along fold lines extending across shell. Each component comprises a plurality of panels 3 with each panel being hinged to at least one adjacent panel.EFFECT: shell may be adjustable between a first configuration in which helmet may be placed over head of user and a second configuration in which said components are flattened and are arranged in a substantially overlying relationship.17 cl, 7 dwg |
