Helmet

Details Helmet Helmet

1999-06-28

2000-05-09

Neas, Michael A.

Apparel

Guard or protector

For wearer's head

2414, A42B 312

Patent

active

060585153

ABSTRACT:
A helmet of the present invention including a shell formed from a thermoplastic resin and a shock absorbing liner disposed on the inside of the shell.
The liner has following varieties of its structure. That is, a single layered structure of acrylonitrile-styrene copolymer resin foam (thereinafter referred to AS foam), a double layered structure in which both less foaming layer and highly foaming layer are made of AS foam, a double layered structure in which a less foaming layer is made of AS foam and a highly foaming layer is made of a foam of other material, or a double layered structure in which a less foaming layer is made of a foam of material other than AS foam and a highly foaming layer is made of AS foam.

REFERENCES:
patent: 5056162 (1991-10-01), Tirums
patent: 5943706 (1999-08-01), Miyajima et al.

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