US PATENT SUBCLASS 416 / 4
ROTARY SKIN FRICTION TYPE (E.G., MAGNUS ROTOR, ETC.)


Current as of: June, 1999
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416 /   HD   FLUID REACTION SURFACES (I.E., IMPELLERS)

4ROTARY SKIN FRICTION TYPE (E.G., MAGNUS ROTOR, ETC.)


DEFINITION

Classification: 416/4

(under the class definition) Apparatus comprising a rotary working member* having a smooth substantially uninterrupted circumferentially continuous skin surface (e.g., cylinder) which contacts the working fluid* such that reaction between the member and the fluid occurs solely as a result of friction contact therebetween.

(1) Note. The friction contact between the working member and the working fluid may be for the purpose of driving the member or pumping the fluid or, in the case of a magnus rotor exerting a lateral thrust on the apparatus by reason of the unbalanced or asymmetrical distribution of fluid pressures about the circumference of the working member (generally a cylinder) resulting from a layer of fluid which is more or less adherent to the surface of the member, moving at one side of the rotary member in a direction contrary to that of the flowing fluid and at the opposite side of the member in the same direction as the fluid flow.

SEE OR SEARCH CLASS

198, Conveyors: Power-Driven,

643, for an endless belt or chain-like member adapted to lift a viscous fluid from a body thereof as a result of the property of the fluid to adhere to the member.

244, Aeronautics, 10, and 21 for cylindrical rotor sustaining means combined with aircraft.

415, Rotary Kinetic Fluid Motors or Pumps,

90, for similar apparatus having medium fluid confining or directing means.