Nrg Systems, Inc.

Henry B Bush

R Paul Smith

Steven H Clark

Emir Heco

Travis Jones

Carolyn Turk West

Timothy R Hoopes

A cup anemometer providing accurate wind speed measurement in a cost-effective configuration. A rotor of the anemometer, e.g. a single-piece molded rotor, may be assembled to a shaft using a cap. In some embodiments, the hub of the rotor and the cap provide symmetry in the area of the cups and arms of the rotor and/or the bottom of the hub and the top of the cap may be positioned above and below, respectively, the planes defined by the tops and bottoms, respectively, of cups of the rotor. In some embodiments, each of the of the cups may be generally conical having a cone angle of nominally 114 degrees and/or each of the arms of the rotor may have a front surface that is co-planar with a front surface of an associated one of the cups.

Cup anemometer with single piece rotor

Cup anemometer

A system for damping a wind vane includes a damping assembly configured to utilize eddy currents to dampen rotational motion of at least a portion of the wind vane. The damping assembly may provide damping of the wind vane to accommodate for sudden changes in wind speed and/or direction while allowing the wind vane to maintain accurate measurements and response in low wind conditions. The damping assembly may reduce the wind vane's susceptibility to oscillation, thereby improving accuracy of the wind vane.

System and method for damping a wind vane

A bearing assembly for an anemometer configured to provide thrust and axial load protection and reduce exposure to potentially degradative debris and/or contaminants. The bearing assembly includes a first shaft and a second shaft and bearings, wherein the bearings are configured to rotate about at least the first shaft while enclosed within a portion of the second shaft. The second shaft is configured to isolate the bearings from any air flow through the anemometer and debris and/or contaminants carried therewith. The bearing assembly further includes a damping member configured to reduce forces imparted upon the bearings, thereby providing protection and preventing premature damage to the bearings from loads.

Bearing assembly for an anemometer

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Richmond, VT, United States of America

Henry B Bush