Bicycle helmet

Details Bicycle helmet Bicycle helmet

1996-08-28

1997-11-18

Neas, Michael A.

Apparel

Guard or protector

For wearer's head

2413, 2425, A42B 300

Patent

active

056874260

ABSTRACT:
A bicycle helmet including a pair of spaced synthetic plastic shells and contains an opening having an annular wall surface connecting the shells, the annular wall being successively axially convergent and divergent, thereby to reinforce the helmet, and to afford circulation of air to the user's head.

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patent: 5204998 (1993-04-01), Liu
patent: 5259071 (1993-11-01), Scott et al.

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