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Class Information
Number: 494
Name: Imperforate bowl: centrifugal separators >
Description: Apparatus and process, not provided for elsewhere, for the breaking up or subdividing of material, which material comprises a mixture of fluids or fluent substances, into two or more components by utilizing a rotatable, receptacle-like member having a generally solid wall, and commonly termed a bowl, for subjecting the material to centrifugal force.










Class Number Class Name No. of Patents
494/35

Bowl and means external thereof for recirculating material

63
494/83

Including bearing structure

99
494/42

Including driven means at least partially external of bowl for moving material thereto or therefrom

71
494/22

Including introduction of differing-weight fluids (e.g., liquids) for countercurrent flow

39
494/12

Including means or structure for promoting safety

91
494/16

Including plurality of miniature bowls (e.g., test tubes) distrubuted about rotatable carrier and readily removable therefrom

357
494/17

And means for introducing either material or auxiliary fluid into bowls

74
494/18

Including conduit of flexible umbilical cable type

83
494/19

And means for rotating each bowl about own axis

34
494/21

Comprising flexible bowls embraced by pockets provided therefor in carrier

63
494/20

Having bowls, or holders therefor, pivotaby attached to carrier for tilting during rotation of carrier

193
494/31

Including plurality of separate and distinct bowls

45
494/32

And means external of bowls for conducting material therebetween

22
494/33

Having bowls equally spaced from a central axis of rotation for orbiting thereabout

50
494/34

Having bowls spaced along common axis of rotation

21
494/38

Including sealing means

174
494/40

Comprising seal, or element cooperating therewith, movable axially for controlling outlet on periphery of bowl

58
494/39

For protecting evacuated, bowl-enclosing housing against gaseous infiltration

12
494/41

For sealing between stationary and moving elements

108
494/84

Including specific device or structure for driving or controlling bowl

305
494/82

Including vibration damping means

101
494/901

Involving mixture containing oil

72
494/900

Involving mixture containing one or more gases

55
494/902

Involving the use of mercury

5
494/85

Miscellaneous

104
494/37

Process

624
494/43

Rotatable bowl

300
494/44

Comprising plurality of bowls partly or wholly within one another

48
494/49

Driven by energy of material supplied

112
494/64

Having structural provision for facilitating cleaning (e.g., quick take apart)

47
494/46

Including bearing means adapted to enable bowl to establish dynamic axis of rotation

29
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

216
494/57

Element associated with pickup of material and adjustable for varying quality of flow

36
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

48
494/51

Plural driven means

20
494/52

Rotatably driven coaxially with bowl, but differing as to direction or speed

33
494/53

Including element having helical blade

230
494/54

Modified blade

58
494/55

Including plurality of discrete pushing or scraping elements moving proximate to material collecting surface of bowl

36
494/45

Including flexible, removable lining therein

235
494/60

Including housing for bowl

228
494/61

And means for reducing, and maintaining, pressure in housing below that of environment

47
494/63

For vertically-oriented bowl, and having plural receivers at top for separated components

17
494/62

Serving to support bowl from above

20
494/47

Including means for imparting other movement to bowl in whole or in part before, during or after its axial rotation

44
494/48

Axial movement of one portion of bowl wall relative to another (e.g., for discharging)

48
494/79

Including plurality of axially-extending, plate-like elements located within vertically-oriented bowl

40
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

39
494/66

Including structure located within bowl and defining axially-extending, helical flow path

23
494/67

Including structure located within vertically-oriented bowl and extending outwardly from central region (e.g., axis) thereof

95
494/74

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

50
494/75

And each extending outwardly in curve of changing or constant radius

14
494/68

Comprising plurality of elements, each concentrically encircling axis of bowl and spaced therealong

29
494/70

Each extending away from region with significant downward, as well as significant outward, component (e.g., nested cones)

93
494/72

And extending therebeyond generally downwardly

3
494/73

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

15
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

6
494/81

Material of bowl wall

90
494/65

Vertically-oriented, and including structural provision for bottom entry of material

61
494/1

With condition responsive means

112
494/7

For controlling drive of (a) bowl or (b) driven means within bowl

103
494/8

In response to load imposed upon driven means

20
494/9

In response to speed of bowl or rotarily-driven means therewithin

42
494/5

For controlling inlet valve

50
494/6

In response to level of liquid-type material in bowl or in reservoir for supplying bowl

11
494/2

For controlling outlet valve

73
494/4

In response to centrifugal force

33
494/3

In response to location of inner boundary of heavy component

41
494/11

With cyclic or time control means

60
494/13

With means for exchanging heat

48
494/14

Comprising or including means for cooling

76
494/36

With means for filtering

258
494/23

With means for furnishing auxiliary fluid to material or apparatus

30
494/26

Air at atmospheric, or greater, pressure

88
494/24

Energy of fluid utilized for driving bowl

34
494/25

Gas other than air

35
494/27

Liquid

175
494/29

Furnished at plural locations

68
494/30

Including one or more valves in incoming path

37
494/28

Moving radially inwardly toward axis of rotation of bowl

6
494/10

With means for indicating, inspecting, measuring, signaling or testing

389
494/15

With means for lubricating

45
 
 
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