(under the class definition) Apparatus comprising a driven runner which is submerged wholly or partially in a fluid, and a means in the path of the fluid current to or from the runner to guide or direct the current, there being no conduit confining the fluid current at the location of said means.
(1) Note. Included under this definition are outboard motor-type propellers having a deflector or guide in the path of the fluid from the propeller to change the course or direction of the fluid to control the speed or direction of the boat (e.g., trolling); also included are fan runners* having directional guide vanes* spaced therefrom.
(2) Note. The means to guide and direct the current must be in addition to the usual rudder for steering a boat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
148+, for means to affect the direction, amount, velocity or whirl of the working fluid in a system where the fluid is confined.
SEE OR SEARCH CLASS 416, Fluid Reaction Surfaces (i.e., Impellers) appropriate subclasses for the runner, per se, in the absence of a directing means.
440, Marine Propulsion, appropriate subclasses, for ship structure combined with a propeller and a rudder.
