Helmet having anti-lift device

Details Helmet having anti-lift device Helmet having anti-lift device

1976-11-15

1978-02-28

Guest, Alfred R.

Apparel

Guard or protector

For wearer's head

2421, A42B 300

Patent

active

040757153

ABSTRACT:
A helmet useful for crew members of an aircraft from which they may be ejected at high speeds comprises a shell over which there is a visor housing containing a visor which can be pulled down over the face of the searer. An anti-lift device in the form of a flange protrudes from the visor housing and extends from a position near a forward side edge of the visor housing and passes around and across the top crown area to a position near the opposite forward side edge of the visor housing. The flange rises from a lowest elevation near the forward side edges to a highest elevation at the top crown area. The regions adjacent the forward side edges constitute wings at a negative angle of attack against wind blase and the region in the vicinity of the top crown area constitutes a spoiler producing turbulence to spoil upward lift.

REFERENCES:
patent: 3423759 (1969-01-01), Catroppa et al.
patent: 3548410 (1970-12-01), Parker
patent: 3721994 (1973-03-01), DeSimone et al.
patent: 3927421 (1975-12-01), Simon

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