Method of producing a protective helmet

Details Method of producing a protective helmet Method of producing a protective helmet

1979-12-19

1981-09-08

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

2 5, 2 6, 2410, 2411, 2412, 2425, 264219, 264258, 264292, 264294, A42B 302

Patent

active

042882680

ABSTRACT:
In a method of producing a protective helmet the steps include applying a first layer of hardenable synthetic resin and fibrous tissue on a predetermined surface of a positive-type mold, thereafter tensioning the fibrous tissue, and subsequently repeating the layer-applying and tensioning steps a prearranged number of times, so as to obtain successive layers forming the protective helmet.

REFERENCES:
patent: 2448114 (1948-08-01), Olson et al.
patent: 2532442 (1950-12-01), Daly
patent: 2610322 (1952-09-01), Daly
patent: 2630868 (1953-03-01), Ellenberger
patent: 4199388 (1980-04-01), Tracey et al.

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