| Class Number |
Class Name |
No. of Patents |
| 494/35 |
Bowl and means external thereof for recirculating material |
59 |
| 494/83 |
Including bearing structure |
83 |
| 494/42 |
Including driven means at least partially external of bowl for moving material thereto or therefrom |
63 |
| 494/22 |
Including introduction of differing-weight fluids (e.g., liquids) for countercurrent flow |
35 |
| 494/12 |
Including means or structure for promoting safety |
80 |
| 494/16 |
Including plurality of miniature bowls (e.g., test tubes) distrubuted about rotatable carrier and readily removable therefrom |
318 |
| 494/17 |
And means for introducing either material or auxiliary fluid into bowls |
68 |
| 494/18 |
Including conduit of flexible umbilical cable type |
77 |
| 494/19 |
And means for rotating each bowl about own axis |
28 |
| 494/21 |
Comprising flexible bowls embraced by pockets provided therefor in carrier |
57 |
| 494/20 |
Having bowls, or holders therefor, pivotaby attached to carrier for tilting during rotation of carrier |
171 |
| 494/31 |
Including plurality of separate and distinct bowls |
39 |
| 494/32 |
And means external of bowls for conducting material therebetween |
18 |
| 494/33 |
Having bowls equally spaced from a central axis of rotation for orbiting thereabout |
48 |
| 494/34 |
Having bowls spaced along common axis of rotation |
15 |
| 494/38 |
Including sealing means |
159 |
| 494/40 |
Comprising seal, or element cooperating therewith, movable axially for controlling outlet on periphery of bowl |
55 |
| 494/39 |
For protecting evacuated, bowl-enclosing housing against gaseous infiltration |
12 |
| 494/41 |
For sealing between stationary and moving elements |
96 |
| 494/84 |
Including specific device or structure for driving or controlling bowl |
284 |
| 494/82 |
Including vibration damping means |
85 |
| 494/901 |
Involving mixture containing oil |
69 |
| 494/900 |
Involving mixture containing one or more gases |
54 |
| 494/902 |
Involving the use of mercury |
5 |
| 494/85 |
Miscellaneous |
94 |
| 494/37 |
Process |
533 |
| 494/43 |
Rotatable bowl |
251 |
| 494/44 |
Comprising plurality of bowls partly or wholly within one another |
45 |
| 494/49 |
Driven by energy of material supplied |
96 |
| 494/64 |
Having structural provision for facilitating cleaning (e.g., quick take apart) |
39 |
| 494/46 |
Including bearing means adapted to enable bowl to establish dynamic axis of rotation |
27 |
| 494/56 |
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 |
185 |
| 494/57 |
Element associated with pickup of material and adjustable for varying quality of flow |
33 |
| 494/58 |
Static scraper or the like for engaging material in moving bowl |
44 |
| 494/59 |
And structure to receive or guide material loosened |
6 |
| 494/50 |
Including driven material-moving means therein |
35 |
| 494/51 |
Plural driven means |
18 |
| 494/52 |
Rotatably driven coaxially with bowl, but differing as to direction or speed |
32 |
| 494/53 |
Including element having helical blade |
207 |
| 494/54 |
Modified blade |
53 |
| 494/55 |
Including plurality of discrete pushing or scraping elements moving proximate to material collecting surface of bowl |
34 |
| 494/45 |
Including flexible, removable lining therein |
198 |
| 494/60 |
Including housing for bowl |
206 |
| 494/61 |
And means for reducing, and maintaining, pressure in housing below that of environment |
42 |
| 494/63 |
For vertically-oriented bowl, and having plural receivers at top for separated components |
13 |
| 494/62 |
Serving to support bowl from above |
19 |
| 494/47 |
Including means for imparting other movement to bowl in whole or in part before, during or after its axial rotation |
42 |
| 494/48 |
Axial movement of one portion of bowl wall relative to another (e.g., for discharging) |
46 |
| 494/79 |
Including plurality of axially-extending, plate-like elements located within vertically-oriented bowl |
34 |
| 494/76 |
Including plurality of axially-extending, tubular elements located within vertically-oriented bowl |
16 |
| 494/77 |
Each element concentric with axis of bowl |
8 |
| 494/78 |
And at least one element having other-than-circular periphery |
2 |
| 494/80 |
Including plurality of shelf-like elements located within vertically oriented bowl and extending generally horizontally inwardly from wall thereof |
37 |
| 494/66 |
Including structure located within bowl and defining axially-extending, helical flow path |
19 |
| 494/67 |
Including structure located within vertically-oriented bowl and extending outwardly from central region (e.g., axis) thereof |
67 |
| 494/74 |
Comprising plurality of axially-extending, plate-like elements, each having its inner edge lying along central region |
40 |
| 494/75 |
And each extending outwardly in curve of changing or constant radius |
11 |
| 494/68 |
Comprising plurality of elements, each concentrically encircling axis of bowl and spaced therealong |
25 |
| 494/70 |
Each extending away from region with significant downward, as well as significant outward, component (e.g., nested cones) |
82 |
| 494/72 |
And extending therebeyond generally downwardly |
3 |
| 494/73 |
And one or more elements having surface displaying three-dimensional configuration |
13 |
| 494/71 |
And the plurality divided vertically into two or more, physically separate or functionally distinct groups |
7 |
| 494/69 |
Each extending generally normally to region, and having surface displaying three-dimensional configuration |
4 |
| 494/81 |
Material of bowl wall |
85 |
| 494/65 |
Vertically-oriented, and including structural provision for bottom entry of material |
53 |
| 494/1 |
With condition responsive means |
97 |
| 494/7 |
For controlling drive of (a) bowl or (b) driven means within bowl |
86 |
| 494/8 |
In response to load imposed upon driven means |
19 |
| 494/9 |
In response to speed of bowl or rotarily-driven means therewithin |
40 |
| 494/5 |
For controlling inlet valve |
39 |
| 494/6 |
In response to level of liquid-type material in bowl or in reservoir for supplying bowl |
8 |
| 494/2 |
For controlling outlet valve |
51 |
| 494/4 |
In response to centrifugal force |
23 |
| 494/3 |
In response to location of inner boundary of heavy component |
32 |
| 494/11 |
With cyclic or time control means |
53 |
| 494/13 |
With means for exchanging heat |
41 |
| 494/14 |
Comprising or including means for cooling |
66 |
| 494/36 |
With means for filtering |
231 |
| 494/23 |
With means for furnishing auxiliary fluid to material or apparatus |
26 |
| 494/26 |
Air at atmospheric, or greater, pressure |
73 |
| 494/24 |
Energy of fluid utilized for driving bowl |
34 |
| 494/25 |
Gas other than air |
29 |
| 494/27 |
Liquid |
160 |
| 494/29 |
Furnished at plural locations |
61 |
| 494/30 |
Including one or more valves in incoming path |
32 |
| 494/28 |
Moving radially inwardly toward axis of rotation of bowl |
5 |
| 494/10 |
With means for indicating, inspecting, measuring, signaling or testing |
336 |
| 494/15 |
With means for lubricating |
38 |
