Back to results
US 2012/0266692 A1Published application
Asymmetric-cup anemometer
AssigneeMet One Instruments, Inc.
InventorSeung-Ho Hong
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMet One Instruments, Inc.
InventorSeung-Ho Hong
Estimating the term…
A rotational cup anemometer with an improved design for the cups is herein disclosed. The anemometer has a rotational assembly with essentially identical cups. Each cup is asymmetric to the plane of rotation. Each cup has a central axis parallel to the plane of rotation. Each cup is asymmetric to the central axis of the cup. Each cup may have a lower surface extension that provides a lifting surface, contributes to an upward force as the rotational assembly is rotated or affects presented frontal area at wind angles. A rotation rate of the rotational assembly as a function of wind angle is closer to the ideal cosine curve as compared to a standard anemometer, for a range of wind angles. Rotating the rotational assembly in a wind parallel to the plane of rotation produces a net upward force on the cups that offsets the weight of the rotational assembly.
A rotational cup anemometer comprising a rotational assembly having a plurality of essentially identical cups arranged in a plane of rotation, with each of the plurality of cups being asymmetric with regard to a respective central axis and asymmetric with regard to the plane of rotation such that a rotation rate of the rotational assembly as a function of a wind angle is closer to an ideal cosine curve as compared to a standard anemometer having axially symmetric cups disposed symmetrically about a respective plane of rotation, for a range of wind angle of up to about plus or minus fifteen degrees.
A rotational cup anemometer comprising a rotational assembly having a plurality of essentially identical cups arranged in a plane of rotation, with each of the plurality of cups being asymmetric with regard to the plane of rotation and having a respective central axis that is parallel to the plane of rotation, such that rotating the rotational assembly in a wind that is parallel to the plane of rotation produces a net force on the cups that offsets a weight of the rotational assembly.
A rotational cup anemometer comprising a rotational assembly having a plurality of essentially identical cups arranged in a plane of rotation, with each of the plurality of cups having a respective central axis parallel to the plane of rotation and each of the cups being asymmetric with regard to both the respective central axis and the plane of rotation, such that rotating the rotational assembly in an upright orientation in a wind that is parallel to the plane of rotation produces an upward force and a downward force, the upward force being greater than the downward force.
Dependencies are inferred from the claim text.