Appeal No. 1999-2245
Application No. 08/705,388
coupling. As can readily be discerned from the document (page
2, col. 1, lines 33 through 49 and col. 2, lines 27 through
36), a chamber 17 is within a casing member 3, with the inner
surface of the chamber being conical. The chamber is divided
into two compartments by radial disks 19, 20, and 21 secured
to member 10 mounted on hub 1 of the driving member 2. Blades
18 are situated between the disks 19, 20, and 21. Centrifugal
force is transmitted by the blades 18 to material (liquid)
contained in the chamber 17 and tends to throw the material
radially outwards upon rotation of driving member 2 against
the conical inner surface. Due to the conical shape of the
surface the material is
caused to slide along same under the action of the centrifugal
force and return to a chamber 4 via passages 11.
The Wolff patent teaches (col. 1, lines 8 through 43 and
col. 2, lines 29 through 42) a seal between the rotor and
stator of a flow machine (an axial flow turbine) to separate
two chambers of varying pressure in the axial direction of the
rotor. As shown in Figs. 1a and 1b, auxiliary blades 4 are
8
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