Optical: systems and elements – Optical aperture or tube – or transparent closure
Patent
1992-04-09
1993-04-13
Ben, Loha
Optical: systems and elements
Optical aperture or tube, or transparent closure
2441185, G02B 2700
Patent
active
052027961
ABSTRACT:
An emergency visual assurance apparatus for an aircraft cockpit comprises an inflatable enclosure having inflated and deflated states. The enclosure is adapted to fill the visual path between a pilot and an instrument panel and/or a windshield of an aircraft when in the inflated state. The inflatable enclosure includes windows for permitting the pilot to see through the enclosure, thereby enabling the pilot a clear path of visibility to the instrument panel and/or the windshield during a smoke emergency in the cockpit. A blower is provided for inflating the inflatable enclosure with transparent fluid during an emergency to maintain the visual path between the pilot and the instrument panel and/or the windshield. A separable member is associated with the blower such its removal activates the blower.
REFERENCES:
patent: 4552140 (1985-11-01), Cowley et al.
patent: 4552325 (1985-11-01), Bruensicke
patent: 4559939 (1985-12-01), Levine et al.
patent: 4710756 (1987-12-01), Thornburg et al.
patent: 4832287 (1989-05-01), Werjefelt
Vision Safe Corporation, "Vision Safe Assures You Vital Visibility Even in the Thickest Smoke!" Brochure 1987.
Vision Safe Corporation, "E.V.A.S.-Emergency Vision Assurance System" Brochure 1990.
Guy Norris, "Smoke-Free Vision Approved", Flight International, p. 16, 22 Jan. 1991.
Volker Leuchsner, "Rauchfreie Zone", Flug Revue, pp. 32-33, Mar. 1992.
"Cockpit's Vision Tunnel", Popular Mechanics, p. 25, Apr. 1992.
Kieran Daly and Graham Warwick, "US Companies Close to Vision System Deal", Flight International, p. 5, 11 Feb. 1992.
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