US PATENT SUBCLASS 494 / 73
.~.~.~.~ And one or more elements having surface displaying three-dimensional configuration

Current as of: June, 1999
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494 /   HD   IMPERFORATE BOWL: CENTRIFUGAL SEPARATORS

43  DF  ROTATABLE BOWL {16}
67  DF  .~ Including structure located within vertically-oriented bowl and extending outwardly from central region (e.g., axis) thereof {2}
68  DF  .~.~ Comprising plurality of elements, each concentrically encircling axis of bowl and spaced therealong {2}
70  DF  .~.~.~ Each extending away from region with significant downward, as well as significant outward, component (e.g., nested cones) {3}
73.~.~.~.~ And one or more elements having surface displaying three-dimensional configuration

DEFINITION

Classification: 494/73

And one or more elements having surface displaying three-dimensional configuration:

(under subclass 70) Apparatus wherein at least one of the elements has one or both of its two, principal (i.e., more or less axially-facing) surfaces formed with a pattern which includes a depth (i.e., a normal-to-the-surface) dimension.

(1) Note. Usually the pattern will appear on both surfaces, inasmuch as it is most commonly formed by stamping; e.g., a corrugated surface.

(2) Note. There mere provision of an occasional dimple in one or both of the surfaces of an element, for the purpose of spacing it from the elements adjacent to it, is not considered to constitute subject matter for this subclass. On the other hand, some of the structure utilized for spacing elements from one another is more complex, especially that which not only spaces the elements but also guides the flow of material which is passing therebetween, which structure does, indeed, present a three-dimensional aspect that is properly classifiable here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

69, for a separator having a rotatable bowl which is vertically-oriented and includes structure which extends outwardly from the central region (e.g., the axis) thereof and wherein the structure comprises a plurality of elements, each of which concentrically encircles the axis of the bowl and is spaced vertically therealong, and further wherein each element extends generally normally to the central region and has a surface which displays a three-dimensional configuration; see also the reference to this subclass (73) appearing in each of (1) Note and (2) Note thereof.

70, in regard to the reference to this subclass (73) appearing in (4) Note thereof.