(under subclass 23) Apparatus wherein the fluid is under pressure or otherwise possesses energy, and wherein that property of the fluid is used for imparting rotation to the member.
(1) Note. The fluid may serve only to enhance the rotation of a bowl which is provided also with driving means of a different nature.
(2) Note. Most commonly, a fixed or adjustable nozzle is utilized to direct the fluid against one or more regions of the member, which regions may be particularly adapted to receive and react to the force of the fluid.
