USPC Patent Classifications

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Class 494 imperforate bowl: centrifugal separators
uspcdescription
494/1494 imperforate bowl: centrifugal separators/(1) with condition responsive means
494/2494 imperforate bowl: centrifugal separators/(1) with condition responsive means (2) for controlling outlet valve
494/3494 imperforate bowl: centrifugal separators/(1) with condition responsive means (2) for controlling outlet valve (3) in response to location of inner boundary of heavy component
494/4494 imperforate bowl: centrifugal separators/(1) with condition responsive means (2) for controlling outlet valve (4) in response to centrifugal force
494/5494 imperforate bowl: centrifugal separators/(1) with condition responsive means (5) for controlling inlet valve
494/6494 imperforate bowl: centrifugal separators/(1) with condition responsive means (5) for controlling inlet valve (6) in response to level of liquid-type material in bowl or in reservoir for supplying bowl
494/7494 imperforate bowl: centrifugal separators/(1) with condition responsive means (7) for controlling drive of (a) bowl or (b) driven means within bowl
494/8494 imperforate bowl: centrifugal separators/(1) with condition responsive means (7) for controlling drive of (a) bowl or (b) driven means within bowl (8) in response to load imposed upon driven means
494/9494 imperforate bowl: centrifugal separators/(1) with condition responsive means (7) for controlling drive of (a) bowl or (b) driven means within bowl (9) in response to speed of bowl or rotarily-driven means therewithin
494/10494 imperforate bowl: centrifugal separators/(10) with means for indicating, inspecting, measuring, signaling or testing
494/11494 imperforate bowl: centrifugal separators/(11) with cyclic or time control means
494/12494 imperforate bowl: centrifugal separators/(12) including means or structure for promoting safety
494/13494 imperforate bowl: centrifugal separators/(13) with means for exchanging heat
494/14494 imperforate bowl: centrifugal separators/(13) with means for exchanging heat (14) comprising or including means for cooling
494/15494 imperforate bowl: centrifugal separators/(15) with means for lubricating
494/16494 imperforate bowl: centrifugal separators/(16) including plurality of miniature bowls (e.g., test tubes) distrubuted about rotatable carrier and readily removable therefrom
494/17494 imperforate bowl: centrifugal separators/(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
494/18494 imperforate bowl: centrifugal separators/(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
494/19494 imperforate bowl: centrifugal separators/(16) including plurality of miniature bowls (e.g., test tubes) distrubuted about rotatable carrier and readily removable therefrom (19) and means for rotating each bowl about own axis
494/20494 imperforate bowl: centrifugal separators/(16) including plurality of miniature bowls (e.g., test tubes) distrubuted about rotatable carrier and readily removable therefrom (20) having bowls, or holders therefor, pivotaby attached to carrier for tilting during rotation of carrier
494/21494 imperforate bowl: centrifugal separators/(16) including plurality of miniature bowls (e.g., test tubes) distrubuted about rotatable carrier and readily removable therefrom (21) comprising flexible bowls embraced by pockets provided therefor in carrier
494/22494 imperforate bowl: centrifugal separators/(22) including introduction of differing-weight fluids (e.g., liquids) for countercurrent flow
494/23494 imperforate bowl: centrifugal separators/(23) with means for furnishing auxiliary fluid to material or apparatus
494/24494 imperforate bowl: centrifugal separators/(23) with means for furnishing auxiliary fluid to material or apparatus (24) energy of fluid utilized for driving bowl
494/25494 imperforate bowl: centrifugal separators/(23) with means for furnishing auxiliary fluid to material or apparatus (25) gas other than air
494/26494 imperforate bowl: centrifugal separators/(23) with means for furnishing auxiliary fluid to material or apparatus (26) air at atmospheric, or greater, pressure
494/27494 imperforate bowl: centrifugal separators/(23) with means for furnishing auxiliary fluid to material or apparatus (27) liquid
494/28494 imperforate bowl: centrifugal separators/(23) with means for furnishing auxiliary fluid to material or apparatus (27) liquid (28) moving radially inwardly toward axis of rotation of bowl
494/29494 imperforate bowl: centrifugal separators/(23) with means for furnishing auxiliary fluid to material or apparatus (27) liquid (29) furnished at plural locations
494/30494 imperforate bowl: centrifugal separators/(23) with means for furnishing auxiliary fluid to material or apparatus (27) liquid (30) including one or more valves in incoming path
494/31494 imperforate bowl: centrifugal separators/(31) including plurality of separate and distinct bowls
494/32494 imperforate bowl: centrifugal separators/(31) including plurality of separate and distinct bowls (32) and means external of bowls for conducting material therebetween
494/33494 imperforate bowl: centrifugal separators/(31) including plurality of separate and distinct bowls (33) having bowls equally spaced from a central axis of rotation for orbiting thereabout
494/34494 imperforate bowl: centrifugal separators/(31) including plurality of separate and distinct bowls (34) having bowls spaced along common axis of rotation
494/35494 imperforate bowl: centrifugal separators/(35) bowl and means external thereof for recirculating material
494/36494 imperforate bowl: centrifugal separators/(36) with means for filtering
494/37494 imperforate bowl: centrifugal separators/(37) process
494/38494 imperforate bowl: centrifugal separators/(38) including sealing means
494/39494 imperforate bowl: centrifugal separators/(38) including sealing means (39) for protecting evacuated, bowl-enclosing housing against gaseous infiltration
494/40494 imperforate bowl: centrifugal separators/(38) including sealing means (40) comprising seal, or element cooperating therewith, movable axially for controlling outlet on periphery of bowl
494/41494 imperforate bowl: centrifugal separators/(38) including sealing means (41) for sealing between stationary and moving elements
494/42494 imperforate bowl: centrifugal separators/(42) including driven means at least partially external of bowl for moving material thereto or therefrom
494/43494 imperforate bowl: centrifugal separators/(43) rotatable bowl
494/44494 imperforate bowl: centrifugal separators/(43) rotatable bowl (44) comprising plurality of bowls partly or wholly within one another
494/45494 imperforate bowl: centrifugal separators/(43) rotatable bowl (45) including flexible, removable lining therein
494/46494 imperforate bowl: centrifugal separators/(43) rotatable bowl (46) including bearing means adapted to enable bowl to establish dynamic axis of rotation
494/47494 imperforate bowl: centrifugal separators/(43) rotatable bowl (47) including means for imparting other movement to bowl in whole or in part before, during or after its axial rotation
494/48494 imperforate bowl: centrifugal separators/(43) rotatable bowl (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)
494/49494 imperforate bowl: centrifugal separators/(43) rotatable bowl (49) driven by energy of material supplied
494/50494 imperforate bowl: centrifugal separators/(43) rotatable bowl (50) including driven material-moving means therein
494/51494 imperforate bowl: centrifugal separators/(43) rotatable bowl (50) including driven material-moving means therein (51) plural driven means
494/52494 imperforate bowl: centrifugal separators/(43) rotatable bowl (50) including driven material-moving means therein (52) rotatably driven coaxially with bowl, but differing as to direction or speed
494/53494 imperforate bowl: centrifugal separators/(43) rotatable bowl (50) including driven material-moving means therein (52) rotatably driven coaxially with bowl, but differing as to direction or speed (53) including element having helical blade
494/54494 imperforate bowl: centrifugal separators/(43) rotatable bowl (50) including driven material-moving means therein (52) rotatably driven coaxially with bowl, but differing as to direction or speed (53) including element having helical blade (54) modified blade
494/55494 imperforate bowl: centrifugal separators/(43) rotatable bowl (50) including driven material-moving means therein (52) rotatably driven coaxially with bowl, but differing as to direction or speed (55) including plurality of discrete pushing or scraping elements moving proximate to material collecting surface of bowl
494/56494 imperforate bowl: centrifugal separators/(43) rotatable 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
494/57494 imperforate bowl: centrifugal separators/(43) rotatable 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
494/58494 imperforate bowl: centrifugal separators/(43) rotatable 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 (58) static scraper or the like for engaging material in moving bowl
494/59494 imperforate bowl: centrifugal separators/(43) rotatable 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 (58) static scraper or the like for engaging material in moving bowl (59) and structure to receive or guide material loosened
494/60494 imperforate bowl: centrifugal separators/(43) rotatable bowl (60) including housing for bowl
494/61494 imperforate bowl: centrifugal separators/(43) rotatable bowl (60) including housing for bowl (61) and means for reducing, and maintaining, pressure in housing below that of environment
494/62494 imperforate bowl: centrifugal separators/(43) rotatable bowl (60) including housing for bowl (62) serving to support bowl from above
494/63494 imperforate bowl: centrifugal separators/(43) rotatable bowl (60) including housing for bowl (63) for vertically-oriented bowl, and having plural receivers at top for separated components
494/64494 imperforate bowl: centrifugal separators/(43) rotatable bowl (64) having structural provision for facilitating cleaning (e.g., quick take apart)
494/65494 imperforate bowl: centrifugal separators/(43) rotatable bowl (65) vertically-oriented, and including structural provision for bottom entry of material
494/66494 imperforate bowl: centrifugal separators/(43) rotatable bowl (66) including structure located within bowl and defining axially-extending, helical flow path
494/67494 imperforate bowl: centrifugal separators/(43) rotatable bowl (67) including structure located within vertically-oriented bowl and extending outwardly from central region (e.g., axis) thereof
494/68494 imperforate bowl: centrifugal separators/(43) rotatable bowl (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
494/69494 imperforate bowl: centrifugal separators/(43) rotatable bowl (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
494/70494 imperforate bowl: centrifugal separators/(43) rotatable bowl (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 (70) each extending away from region with significant downward, as well as significant outward, component (e.g., nested cones)
494/71494 imperforate bowl: centrifugal separators/(43) rotatable bowl (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 (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
494/72494 imperforate bowl: centrifugal separators/(43) rotatable bowl (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 (70) each extending away from region with significant downward, as well as significant outward, component (e.g., nested cones) (72) and extending therebeyond generally downwardly
494/73494 imperforate bowl: centrifugal separators/(43) rotatable bowl (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 (70) each extending away from region with significant downward, as well as significant outward, component (e.g., nested cones) (73) and one or more elements having surface displaying three-dimensional configuration
494/74494 imperforate bowl: centrifugal separators/(43) rotatable bowl (67) including structure located within vertically-oriented bowl and extending outwardly from central region (e.g., axis) thereof (74) comprising plurality of axially-extending, plate-like elements, each having its inner edge lying along central region
494/75494 imperforate bowl: centrifugal separators/(43) rotatable bowl (67) including structure located within vertically-oriented bowl and extending outwardly from central region (e.g., axis) thereof (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
494/76494 imperforate bowl: centrifugal separators/(43) rotatable bowl (76) including plurality of axially-extending, tubular elements located within vertically-oriented bowl
494/77494 imperforate bowl: centrifugal separators/(43) rotatable bowl (76) including plurality of axially-extending, tubular elements located within vertically-oriented bowl (77) each element concentric with axis of bowl
494/78494 imperforate bowl: centrifugal separators/(43) rotatable bowl (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
494/79494 imperforate bowl: centrifugal separators/(43) rotatable bowl (79) including plurality of axially-extending, plate-like elements located within vertically-oriented bowl
494/80494 imperforate bowl: centrifugal separators/(43) rotatable bowl (80) including plurality of shelf-like elements located within vertically oriented bowl and extending generally horizontally inwardly from wall thereof
494/81494 imperforate bowl: centrifugal separators/(43) rotatable bowl (81) material of bowl wall
494/82494 imperforate bowl: centrifugal separators/(82) including vibration damping means
494/83494 imperforate bowl: centrifugal separators/(83) including bearing structure
494/84494 imperforate bowl: centrifugal separators/(84) including specific device or structure for driving or controlling bowl
494/85494 imperforate bowl: centrifugal separators/(85) miscellaneous
494/900494 imperforate bowl: centrifugal separators/(900) involving mixture containing one or more gases
494/901494 imperforate bowl: centrifugal separators/(901) involving mixture containing oil
494/902494 imperforate bowl: centrifugal separators/(902) involving the use of mercury

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