Pylon

Details Pylon Pylon

1990-11-26

1992-05-19

Arnold, Bruce Y.

Optical: systems and elements

Signal reflector

3-corner retroreflective

359515, 116 63P, 116 63C, G02B 5122, G02B 512, E01F 900

Patent

active

051153432

ABSTRACT:
A truncated pyramidal pylon, has retroreflectant side walls each sloping at 8.degree.-10.degree. to the vertical for helicopters and 3.degree.-6.degree. to the vertical for fixed wing aircraft. The pylon may be constructed as a permanently erected unit or as a collapsible arrangement from hingedly connected flat surfaces, with a surface corresponding to each side, foldable to provide the assembled pylon.

REFERENCES:
patent: 2935238 (1960-05-01), Koehler
patent: 4202600 (1980-05-01), Burke et al.
patent: 4466376 (1984-08-01), Wells
patent: 4798747 (1989-01-01), Laramee

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