Abstract: An improved bucket wheel assembly with a center frame, having a plurality of fingers extending therefrom. In each of the fingers a slot is formed. The assembly also includes a plurality of conically shaped hollow cups. The hollow cups each have a wall that forms an apex and a circular opening. The hollow cups may also have a second slot formed by two substantially parallel protuberances on the inner surface of each hollow cup. The hollow cups are attached to the center frame by matching the slots and sliding one into the other, so that a portion of the finger is between the protuberances, from the opening of each hollow cup. The hollow cup is slid into the slot until it reaches the bottom of the slot on the finger.

Abstract: An apparatus for measuring fluid velocity includes a generally Y-shaped yoke including a base and first and second forks, the first and second forks including through holes at ends thereof; a bucket wheel supported between the first and second forks of the yoke; a first shaft that passes through the through hole in the first fork and supports one side of the bucket wheel; a second shaft that passes through the through hole in the second fork and supports the other side of the bucket wheel, the second shaft rotating with the bucket wheel and including a magnet mounted therein; the second fork of the yoke including an opening for receiving a reed switch assembly, the opening communicating with the through hole in the second fork, the magnet on the second shaft being aligned with the opening whereby when the second shaft rotates the magnet passes by the opening; and a reed switch assembly mounted in the opening in the second fork of the yoke.