Wind direction indicator

Details Wind direction indicator Wind direction indicator

1990-08-31

1991-11-19

Yasich, Daniel M.

Measuring and testing

Navigation

Leeway incidence or side-slip

116264, G01W 100

Patent

active

050656228

ABSTRACT:
This wind-direction indicator includes a pointing beam having a tail at one end formed by diverging feather segments, with a transverse hole in the central portion of the beam receiving a standard straight pin. A glass bead is interposed between the head of the pin and the underside of the beam, the upper extremity of the pin being attached to a standard alligator clip for attachment to a convenient twig. The hole receiving the pin is sufficiently larger than the pin to permit considerable rocking movement about a horizontal axis, and the beam is balanced after the assembly of the feathers by clipping the upwind end of the beam. This end is later finished by a short dip in a fluorescent paint, the rest of the device being finished either balck or with a camouflage pattern.

REFERENCES:
patent: 174866 (1876-03-01), Smith
patent: 1196348 (1916-08-01), Gianini
patent: 1213714 (1917-01-01), Washburne et al.
patent: 3354715 (1967-11-01), Cansey
patent: 3789793 (1974-02-01), Keim
patent: 3791211 (1974-02-01), Dobesch
patent: 4665744 (1987-05-01), Smith
patent: 4850798 (1989-07-01), Bailey

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