.~.~ Driving radial vanes which cause toroidal flow of brake fluid
DEFINITION
Classification: 188/296
(under subclass 290) Device wherein said mechanism turns a shaft having radially extending blades connected to and partly enclosed by a concave shroud, which device has a second concave shroud having radially extending blades therein but not turning; the shrouds being arranged to face one another to enclose a body of fluid which is caused to be moved by the turning blades and retarded by the nonturning blades.
(1) Note. The brake herein defined is structurally similar to a device described as a "vortex-flow drive" in (1) Note to Class 192, subclass 3.21. In both instances fluid circulates in the shape of a torus (i.e., the solid formed by a circle revolving about an axis lying in its plane). However, in Class 192 the device transmits torque from a first, rotating shaft to a second rotatable shaft, whereas in this subclass (296), the second shaft does not rotate, thereby retarding rotation of the first shaft.
