Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1981-06-03
1982-11-09
Henry, Jon W.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
2441293, G02B 718, B64C 114
Patent
active
043581820
ABSTRACT:
A composite window for a vehicle entrance door includes means for affording a downward view while the door is closed. The window includes an outer pane having two substantially parallel plane surfaces, an inner pane having a plane surface facing the outer pane and spaced therefrom. The opposite surface is formed with a prism which extends either partly or entirely over its surface. Additionally, the opposite surface of the inner pane may be provided with a concave surface forming a concave lens which enhances the effect of the prism.
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patent: 1907800 (1933-05-01), Harrington
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patent: 3038756 (0000-01-01), Heimer
Hayes Robert B.
Pompei Arturo
Anderson Daniel T.
Donahue Bernard A.
Henry Jon W.
The Boeing Company
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