Multiple density helmet body compositions to strengthen helmet

Details Multiple density helmet body compositions to strengthen helmet Multiple density helmet body compositions to strengthen helmet

1991-06-19

1994-05-10

Nerbun, Peter

Apparel

Guard or protector

For wearer's head

2425, A42B 302

Patent

active

053095766

ABSTRACT:
A protective helmet having a dome-shaped body and air vent structure in the body comprising a body consisting of molded, synthetic resin sections, a first the section having relatively higher density and a second the section having relatively lower density; the first section extending in strengthening adjacency to the second section, laterally of the vent structure.

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patent: 4970729 (1990-11-01), Shimazaki

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