What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
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Class Number: 494 Class Title: IMPERFORATE BOWL: CENTRIFUGAL SEPARATORS Subclass Subclass Number Title 1 WITH CONDITION RESPONSIVE MEANS 2 .For controlling outlet valve 3 ..In response to location of inner boundary of heavy component 4 ..In response to centrifugal force 5 .For controlling inlet valve 6 ..In response to level of liquid-type material in bowl or in reservoir for supplying bowl 7 .For controlling drive of (a) bowl or (b) driven means within bowl 8 ..In response to load imposed upon driven means 9 ..In response to speed of bowl or rotarily-driven means therewithin 10 WITH MEANS FOR INDICATING, INSPECTING, MEASURING, SIGNALING OR TESTING 11 WITH CYCLIC OR TIME CONTROL MEANS 12 INCLUDING MEANS OR STRUCTURE FOR PROMOTING SAFETY 13 WITH MEANS FOR EXCHANGING HEAT 14 .Comprising or including means for cooling 15 WITH MEANS FOR LUBRICATING 16 INCLUDING PLURALITY OF MINIATURE BOWLS (E.G., TEST TUBES) DISTRUBUTED ABOUT ROTATABLE CARRIER AND READILY REMOVABLE THEREFROM 17 .And means for introducing either material or auxiliary fluid into bowls 18 ..Including conduit of flexible umbilical cable type 19 .And means for rotating each bowl about own axis 20 .Having bowls, or holders therefor, pivotaby attached to carrier for tilting during rotation of carrier 21 .Comprising flexible bowls embraced by pockets provided therefor in carrier 22 INCLUDING INTRODUCTION OF DIFFERING-WEIGHT FLUIDS (E.G., LIQUIDS) FOR COUNTERCURRENT FLOW 23 WITH MEANS FOR FURNISHING AUXILIARY FLUID TO MATERIAL OR APPARATUS 24 .Energy of fluid utilized for driving bowl 25 .Gas other than air 26 .Air at atmospheric, or greater, pressure 27 .Liquid 28 ..Moving radially inwardly toward axis of rotation of bowl 29 ..Furnished at plural locations 30 ..Including one or more valves in incoming path 31 INCLUDING PLURALITY OF SEPARATE AND DISTINCT BOWLS 32 .And means external of bowls for conducting material therebetween 33 .Having bowls equally spaced from a central axis of rotation for orbiting thereabout 34 .Having bowls spaced along common axis of rotation 35 BOWL AND MEANS EXTERNAL THEREOF FOR RECIRCULATING MATERIAL 36 WITH MEANS FOR FILTERING 37 PROCESS 38 INCLUDING SEALING MEANS 39 .For protecting evacuated, bowl-enclosing housing againstt gaseous infiltration 40 .Comprising seal, or element cooperating therewith, movable axially for controlling outlet on periphery of bowl 41 .For sealing between stationary and moving elements 42 INCLUDING DRIVEN MEANS AT LEAST PARTIALLY EXTERNAL OF BOWL FOR MOVING MATERIAL THERETO OR THEREFROM 43 ROTATABLE BOWL 44 .Comprising plurality of bowls partly or wholly within one another 45 .Including flexible, removable lining therein 46 .Including bearing means adapted to enable bowl to establish dynamic axis of rotation 47 .Including means for imparting other movement to bowl in whole or in part before, during or after its axial rotation 48 ..Axial movement of one portion of bowl wall relative to another (e.g., for discharging) 49 .Driven by energy of material supplied 50 .Including driven material-moving means therein 51 ..Plural driven means 52 ..Rotatably driven coaxially with bowl, but differing as to direction or speed 53 ...Including element having helical blade 54 ....Modified blade 55 ...Including plurality of discrete pushing or scraping elements moving proximate to material collecting surface of bowl 56 .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 ..Element associated with pickup of material and adjustable for varying quality of flow 58 ..Static scraper or the like for engaging material in moving bowl 59 ...And structure to receive or guide material loosened 60 .Including housing for bowl 61 ..And means for reducing, and maintaining, pressure in housing below that of environment 62 ..Serving to support bowl from above 63 ..For vertically-oriented bowl, and having plural receivers at top for separated components 64 .Having structural provision for facilitating cleaning (e.g., quick take apart) 65 .Vertically-oriented, and including structural provision for bottom entry of material 66 .Including structure located within bowl and defining axially-extending, helical flow path 67 .Including structure located within vertically-oriented bowl and extending outwardly from central region (e.g., axis) thereof 68 ..Comprising plurality of elements, each concentrically encircling axis of bowl and spaced therealong 69 ...Each extending generally normally to region, and having surface displaying three-dimensional configuration 70 ...Each extending away from region with significant downward, as well as significant outward, component (e.g., nested cones) 71 ....And the plurality divided vertically into two or more, physically separate or functionally distinct groups 72 ....And extending therebeyond generally downwardlyy 73 ....And one or more elements having surface displaying three-dimensional configuration 74 ..Comprising plurality of axially-extending, plate-like elements, each having its inner edge lying along central region 75 ...And each extending outwardly in curve of changing or constant radius 76 .Including plurality of axially-extending, tubular elements located within vertically-oriented bowl 77 ..Each element concentric with axis of bowl 78 ...And at least one element having other-than-circular periphery 79 .Including plurality of axially-extending, plate-like elements located within vertically-oriented bowl 80 .Including plurality of shelf-like elements located within vertically oriented bowl and extending generally horizontally inwardly from wall thereof 81 .Material of bowl wall 82 INCLUDING VIBRATION DAMPING MEANS 83 INCLUDING BEARING STRUCTURE 84 INCLUDING SPECIFIC DEVICE OR STRUCTURE FOR DRIVING OR CONTROLLING BOWL 85 MISCELLANEOUS * ****************************** * CROSS-REFERENCE ART COLLECTIONS * ****************************** 900 INVOLVING MIXTURE CONTAINING ONE OR MORE GASES 901 INVOLVING MIXTURE CONTAINING OIL 902 INVOLVING THE USE OF MERCURY