Appeal No. 95-1849
Application 07/681,527
This is an appeal from the decision of the examiner finally
rejecting claims 1 through 3, which constitute all of the claims
remaining of record in the application.
The appellants' invention is directed to a method of freeing
a liquid from a substance disposed therein. The subject matter
before us on appeal is illustrated by reference to claim 1, which
reads as follows:
1. A method of freeing a liquid from a substance dispersed
therein and having a larger density than the liquid, comprising
the steps of: feeding the liquid into a centrifugal separator
having a rotor rotated in a predetermined direction about a
rotational axis, the rotor having a stack of at least partly
conical separation disks arranged coaxially with the rotor for
rotation therewith and being axially spaced from each other and
spacing means positioned between and bridging the spaces between
the separation disks and delimiting several separate flow paths
in each space between adjacent disks, the separate flow paths in
each said space being distributed about the rotational axis, and
each separate flow path extending from an inlet part to an outlet
part situated at difference distances from the rotational axis;
conducting the liquid to the inlet parts of said flow paths and
further conducting the liquid through each of the flow paths in a
direction having one radial component and one component in the
circumferential direction of the rotor opposite the rotational
direction of the rotor; and removing liquid freed from the
dispersed substance from the outlet parts of said flow paths.
THE REFERENCES
The references relied upon by the examiner to support the
final rejection are:
Bechtolsheim 432,719 July 22, 1890
Berber et al. (Berber) 4,262,841 Apr. 21, 1981
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