| 摘要 |
An adjustable rotating hydrotherapy jet has a rotatable support structure for a jet outlet nozzle that holds the outlet nozzle with its axis offset from the rotation axis, and at a non-intersecting and non-zero angle thereto. The jet flow through the outlet nozzle thus imparts a turning moment to the support structure, causing it to rotate along with the nozzle. The outlet is preferably provided as an eyeball-type fitting, with the eyeball adjustable over a range of angles relative to its support structure to allow for a selection of the jet's angle and rotational speed; this preferably includes an adjustment position at which the eyeball axis is parallel to the rotational axis and the jet does not rotate. A tab in the eyeball's support structure preferably lodges in a track in the eyeball member to restrict the eyeball adjustment to a plane that develops the maximum rotational thrust.
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