Wind indicator

Details Wind indicator Wind indicator

2007-04-03

2007-04-03

Cyran, Michael (Department: 2855)

Measuring and testing

Fluid flow direction

Relative to aircraft or watercraft

C073S170010, C073S170020, C073S170040, C073S170050, C073S170060, C073S170070, C073S170080, C073S170090, C073S170160, C073S170110, C073S170120, C073S170130, C073S170140, C073S170150

Reexamination Certificate

active

10505893

ABSTRACT:
Wind indicator apparatus for indicating air flow comprising: a direction pointer, including a vane member, for providing a visible indication of air flow direction; pivoting means including a fixed portion for coupling to a sailing craft and a pivotable portion able to pivot with respect to said fixed portion and with which said direction pointer is entrained for movement therewith; and a counterbalance extending from said pivotable portion of said pivoting means and arranged to move therewith, the mass of the counterbalance being disposed so as to maintain the direction pointer in a substantially level position.

REFERENCES:
patent: 2363087 (1944-11-01), Salisbury
patent: 4488431 (1984-12-01), Miga
patent: 4522069 (1985-06-01), Birnbaum
patent: 4597287 (1986-07-01), Thomas
patent: 5811673 (1998-09-01), Kwok et al.
patent: 0 140 813 (1985-05-01), None

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