Patent ID: 6550071
Filing Date: 2003-04-22
Classification: A42B

Abstract:
A generally open concave bicycle helmet comprising a hard external shell, a shock absorbing insert located radially inwardly of said external shell; said external shell defining a number of fore and aft extending structural arms, each of said structural arms having a fore end and an aft end, said structural arms transversely spaced from one another in transversely successive pairs by transverse inter-spacing gaps, said structural arms merging with an annular edge rim at both said fore end and aft end thereof, said insert having radial passageways in register with said inter-spacing gaps, said inter-spacing gaps and said radial passageways forming air ventilation channels; each of said structural arms being arcuate in cross-section, said arcuate structural arms each forming two side walls circumscribing therebetween a corresponding groove, said insert defining an exposed surface, said structural arm side walls being embedded into selected portions of said insert exposed surface; wherein said structural arms protect radially outwardly from said insert exposed surfaces.