Apparatus for making helmets

Details Apparatus for making helmets Apparatus for making helmets

1982-05-24

1984-09-25

Hoag, Willard E.

Static molds

Having inflatable element

264314, B29C 112, B29C 114

Patent

active

044732082

ABSTRACT:
A mold for molding textile layers and resin to make helmets having a cavity mold member and a cooperating core member. The core member having an expansible elastic membrane thereabout and having a peripheral groove for securing reinforcing layers to the core.

REFERENCES:
patent: 2115065 (1938-04-01), Dym
patent: 2123275 (1938-07-01), Dym
patent: 2532442 (1950-02-01), Daly
patent: 2746049 (1956-05-01), Hudson
patent: 3320619 (1967-05-01), Lastnik et al.
patent: 3444288 (1969-05-01), Mead
patent: 3479666 (1969-11-01), Webb
patent: 3561079 (1971-02-01), Anderson
patent: 3674394 (1972-07-01), Wiltshire
patent: 4008949 (1977-02-01), Luna
patent: 4288268 (1981-09-01), Hartnung

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