Helmet with reinforcement

Details Helmet with reinforcement Helmet with reinforcement

1990-08-01

1991-12-31

Schroeder, Werner H.

Apparel

Guard or protector

For wearer's head

A42B 300

Patent

active

050759043

ABSTRACT:
An improved helmet comprising a fiber reinforced thermosetting resin as a main component is disclosed. In the helmet, at least a part thereof to be subjected to shock adsorption property test defined by JIS T 8133 (1982) is reinforced with a cloth of polyethylene fiber having high tenacity and high modulus such as that having tensile strength of not less than 20 g/denier and tensile modulus of not less than 500 g/denier.

REFERENCES:
patent: 2956916 (1960-10-01), Voss et al.
patent: 4242406 (1980-12-01), El Bouhnini et al.
patent: 4288268 (1981-09-01), Hartung
patent: 4300242 (1981-11-01), Nava et al.
patent: 4466138 (1984-08-01), Gessalin
patent: 4732803 (1988-03-01), Smith, Jr.
patent: 4809690 (1989-03-01), Bouyssi et al.
patent: 4840826 (1989-06-01), Shirasaki et al.
patent: 4879165 (1989-11-01), Smith
patent: 4953234 (1990-09-01), Li et al.

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