The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 1978
Filed:
Nov. 15, 1976
Duane W Cowgill, Altadena, CA (US);
Sierra Engineering Co., Sierra Madre, CA (US);
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.