Pneumatic adjustment means for earcups in helmets

Details Pneumatic adjustment means for earcups in helmets Pneumatic adjustment means for earcups in helmets

1986-07-10

1987-10-20

Nerbun, Peter

Apparel

Guard or protector

For wearer's head

2 6, 2209, 2DIG3, A42B 300

Patent

active

047004100

ABSTRACT:
A protective helmet assembly in which a manually operable pump carried by the helmet outer shell is accessible from outside the shell to inflate two inflatable bodies disposed between the shell and respective sound-attenuating earcup subassemblies suspended from the shell adjacent to the wearer's ears. An element accessible from outside the shell can be actuated to deflate the inflatable bodies when the helmet assembly is doffed.

REFERENCES:
patent: 3091771 (1963-06-01), Bixby
patent: 3562811 (1971-02-01), Allen
patent: 3621488 (1971-11-01), Gales
patent: 3864756 (1975-02-01), Desimone
patent: 3866243 (1975-02-01), Morgan
patent: 3943572 (1976-03-01), Aileo

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