US Patent Class 494
IMPERFORATE BOWL: CENTRIFUGAL SEPARATORS



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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  WITH CONDITION RESPONSIVE MEANS
2  DF  .~ For controlling outlet valve
3  DF  .~.~ In response to location of inner boundary of heavy component
4  DF  .~.~ In response to centrifugal force
5  DF  .~ For controlling inlet valve
6  DF  .~.~ In response to level of liquid-type material in bowl or in reservoir for supplying bowl
7  DF  .~ For controlling drive of (a) bowl or (b) driven means within bowl
8  DF  .~.~ In response to load imposed upon driven means
9  DF  .~.~ In response to speed of bowl or rotarily-driven means therewithin
10  DF  WITH MEANS FOR INDICATING, INSPECTING, MEASURING, SIGNALING OR TESTING
11  DF  WITH CYCLIC OR TIME CONTROL MEANS
12  DF  INCLUDING MEANS OR STRUCTURE FOR PROMOTING SAFETY
13  DF  WITH MEANS FOR EXCHANGING HEAT
14  DF  .~ Comprising or including means for cooling
15  DF  WITH MEANS FOR LUBRICATING
16  DF  INCLUDING PLURALITY OF MINIATURE BOWLS (E.G., TEST TUBES) DISTRUBUTED ABOUT ROTATABLE CARRIER AND READILY REMOVABLE THEREFROM
17  DF  .~ And means for introducing either material or auxiliary fluid into bowls
18  DF  .~.~ Including conduit of flexible umbilical cable type
19  DF  .~ And means for rotating each bowl about own axis
20  DF  .~ Having bowls, or holders therefor, pivotaby attached to carrier for tilting during rotation of carrier
21  DF  .~ Comprising flexible bowls embraced by pockets provided therefor in carrier
22  DF  INCLUDING INTRODUCTION OF DIFFERING-WEIGHT FLUIDS (E.G., LIQUIDS) FOR COUNTERCURRENT FLOW
23  DF  WITH MEANS FOR FURNISHING AUXILIARY FLUID TO MATERIAL OR APPARATUS
24  DF  .~ Energy of fluid utilized for driving bowl
25  DF  .~ Gas other than air
26  DF  .~ Air at atmospheric, or greater, pressure
27  DF  .~ Liquid
28  DF  .~.~ Moving radially inwardly toward axis of rotation of bowl
29  DF  .~.~ Furnished at plural locations
30  DF  .~.~ Including one or more valves in incoming path
31  DF  INCLUDING PLURALITY OF SEPARATE AND DISTINCT BOWLS
32  DF  .~ And means external of bowls for conducting material therebetween
33  DF  .~ Having bowls equally spaced from a central axis of rotation for orbiting thereabout
34  DF  .~ Having bowls spaced along common axis of rotation
35  DF  BOWL AND MEANS EXTERNAL THEREOF FOR RECIRCULATING MATERIAL
36  DF  WITH MEANS FOR FILTERING
37  DF  PROCESS
38  DF  INCLUDING SEALING MEANS
39  DF  .~ For protecting evacuated, bowl-enclosing housing against gaseous infiltration
40  DF  .~ Comprising seal, or element cooperating therewith, movable axially for controlling outlet on periphery of bowl
41  DF  .~ For sealing between stationary and moving elements
42  DF  INCLUDING DRIVEN MEANS AT LEAST PARTIALLY EXTERNAL OF BOWL FOR MOVING MATERIAL THERETO OR THEREFROM
43  DF  ROTATABLE BOWL
44  DF  .~ Comprising plurality of bowls partly or wholly within one another
45  DF  .~ Including flexible, removable lining therein
46  DF  .~ Including bearing means adapted to enable bowl to establish dynamic axis of rotation
47  DF  .~ Including means for imparting other movement to bowl in whole or in part before, during or after its axial rotation
48  DF  .~.~ Axial movement of one portion of bowl wall relative to another (e.g., for discharging)
49  DF  .~ Driven by energy of material supplied
50  DF  .~ Including driven material-moving means therein
51  DF  .~.~ Plural driven means
52  DF  .~.~ Rotatably driven coaxially with bowl, but differing as to direction or speed
53  DF  .~.~.~ Including element having helical blade
54  DF  .~.~.~.~ Modified blade
55  DF  .~.~.~ Including plurality of discrete pushing or scraping elements moving proximate to material collecting surface of bowl
56  DF  .~ Including discharge-related structure in nature of (a) outlet having device for controlling quantity of flow, (b) element associated with pickup of material and adjustable for varying quality of flow, or (c) static scraper or the like for engaging material in moving bowl
57  DF  .~.~ Element associated with pickup of material and adjustable for varying quality of flow
58  DF  .~.~ Static scraper or the like for engaging material in moving bowl
59  DF  .~.~.~ And structure to receive or guide material loosened
60  DF  .~ Including housing for bowl
61  DF  .~.~ And means for reducing, and maintaining, pressure in housing below that of environment
62  DF  .~.~ Serving to support bowl from above
63  DF  .~.~ For vertically-oriented bowl, and having plural receivers at top for separated components
64  DF  .~ Having structural provision for facilitating cleaning (e.g., quick take apart)
65  DF  .~ Vertically-oriented, and including structural provision for bottom entry of material
66  DF  .~ Including structure located within bowl and defining axially-extending, helical flow path
67  DF  .~ Including structure located within vertically-oriented bowl and extending outwardly from central region (e.g., axis) thereof
68  DF  .~.~ Comprising plurality of elements, each concentrically encircling axis of bowl and spaced therealong
69  DF  .~.~.~ Each extending generally normally to region, and having surface displaying three-dimensional configuration
70  DF  .~.~.~ Each extending away from region with significant downward, as well as significant outward, component (e.g., nested cones)
71  DF  .~.~.~.~ And the plurality divided vertically into two or more, physically separate or functionally distinct groups
72  DF  .~.~.~.~ And extending therebeyond generally downwardly
73  DF  .~.~.~.~ And one or more elements having surface displaying three-dimensional configuration
74  DF  .~.~ Comprising plurality of axially-extending, plate-like elements, each having its inner edge lying along central region
75  DF  .~.~.~ And each extending outwardly in curve of changing or constant radius
76  DF  .~ Including plurality of axially-extending, tubular elements located within vertically-oriented bowl
77  DF  .~.~ Each element concentric with axis of bowl
78  DF  .~.~.~ And at least one element having other-than-circular periphery
79  DF  .~ Including plurality of axially-extending, plate-like elements located within vertically-oriented bowl
80  DF  .~ Including plurality of shelf-like elements located within vertically oriented bowl and extending generally horizontally inwardly from wall thereof
81  DF  .~ Material of bowl wall
82  DF  INCLUDING VIBRATION DAMPING MEANS
83  DF  INCLUDING BEARING STRUCTURE
84  DF  INCLUDING SPECIFIC DEVICE OR STRUCTURE FOR DRIVING OR CONTROLLING BOWL
85  DF  MISCELLANEOUS
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CROSS-REFERENCE ART COLLECTIONS
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900  DF  INVOLVING MIXTURE CONTAINING ONE OR MORE GASES
901  DF  INVOLVING MIXTURE CONTAINING OIL
902  DF  INVOLVING THE USE OF MERCURY