Firefighter's helmet
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United States of America Patent
Stats
-
May 28, 1991
Grant Date -
N/A
app pub date -
Feb 23, 1990
filing date -
Feb 23, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A firefighter's helmet having improved heat resistance and protective qualities while being also relatively light in weight having a protective outer shell composed of at least one layer of a fabric of a mixture of polybenzimidazole and high modulus aramid materials and a complementary layer of a very fine glass cloth adjacent at least one side of the polybenzimidazole-aramid layer, impregnated with and molded in a desired shape within a polyester resin material containing a small percentage of a coupling agent. The outer shell may also consist of additional layers of fibrous reinforcing materials molded within the resin material.
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