US PATENT SUBCLASS 494 / 74
.~.~ Comprising plurality of axially-extending, plate-like elements, each having its inner edge lying along central region

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
74.~.~ Comprising plurality of axially-extending, plate-like elements, each having its inner edge lying along central region {1}
75  DF  .~.~.~> And each extending outwardly in curve of changing or constant radius

DEFINITION

Classification: 494/74

Comprising plurality of axially-extending, plate-like elements, each having its inner edge lying along central region:

(under subclass 67) Apparatus wherein the internal structure comprises, at least in part, a plurality of elements which (a) parallel the axis of the member, (b) have length (i.e., height) and width dimensions, especially the former, which greatly exceed their thickness dimension, and (c) each have the edge thereof which faces toward the interior of the member located proximate to either the axis or a locus parallel thereto and somewhat removed therefrom.

(1) Note. For the purposes of this area (74+), "platelike" is not restricted to describing only an element which appears, in a horizontal section, as a straight line; in

fact, indented subclass 75 provides for an element which shows, in such a section, as a curved line of one form or another.

(2) Note. Subclass 79 below provides for a plurality of elements which may be structurally similar to the elements of this area (74+), but which lack the association with the central region of the member that is required here (74+). In some instances that lack of association results from the fact that the elements of that subclass (79) may originate at the wall of the member and extend inwardly, to one degree or another, therefrom. In the event that the presence, or absence, of an association with the central region is not clear, the doubt should be resolved in favor of classification here (74+).

SEE OR SEARCH THIS CLASS, SUBCLASS:

79, as explained in the reference thereto appearing in (2) Note above, and see, especially, (2) Note of that subclass (79).