US3814244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for fractionating fluid suspensions
Assignee: Canadian Ingersoll Rand Co Ltd
•
Filing: 1972-05-30
•
Granted: 1974-06-04
•
Expires: 1992-05-30
Abstract
Abstract Fractionating apparatus comprising a plurality of annular walls spaced one inside the other, at least one of which walls is a screen. The apparatus includes rotary drive shaft means having a portion connectible to a driving means and a portion eccentric to such connectible portion; and one of the annular walls is connected to the eccentric portion of the drive shaft means to be orbitally driven during the driven rotation of the drive shaft means.
Inventors
- 👤 D Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:45
CPC Classifications
B; B04; B04C; B04C9/00; B04C7/00; B04C2009/004; Y; Y10; Y10S; Y10S210/00; Y10S210/928
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
272 words
Apparatus for fractionating a fluid suspension, comprising a casing having inlet means for introducing fluid suspension into said casing, a plurality of annular wall members spaced one inside the other within said casing, at least one of said wall members being a screen having an outer screening side face and an inner accepts side face and said screening side face of said screen bounding the inner side of a screening passage extending therearound, said screen including screening openings adapted for accepting a fraction of a fluid suspension supplied to its said screening side face while rejecting another fraction of such fluid suspension, said inlet means communicating with said screening passage for supplying fluid suspension to said screening side face of said screen, rejects discharge means communicating with said screening passage for discharging the fraction of the suspension rejected by said screen, accepts discharge means for discharging the fraction of the supsension accepted by said screen, a rotatable drive shaft including a portion connectible to a driving means and another portion eccentric to said connectible portion, driving means connected to said connectible portion of said drive shaft for rotatably driving said drive shaft through said connectible portion thereof, at least one of said wall members being orbitally movable, means connecting said orbitally movable wall member to said eccentric portion of said drive shaft to cause driven rotation of said drive shaft by said driving means to provide orbital movement of said orbitally movable wall member, means for restraining rotation of said orbitally movable wall member during its said orbital movement, and balancing means for countering the forces generated during operation of the apparatus.
Claim 2
Dependent Claim
272 words
Apparatus for fractionating a fluid suspension, comprising a casing having inlet means for introducing fluid suspension into said casing, a plurality of annular wall members spaced one inside the other within said casing, at least one of said wall members being a screen having an outer screening side face and an inner accepts side face and said screening side face of said screen bounding the inner side of a screening passage extending therearound, said screen including screening openings adapted for accepting a fraction of a fluid suspension supplied to its said screening side face while rejecting another fraction of such fluid suspension, said inlet means communicating with said screening passage for supplying fluid suspension to said screening side face of said screen, rejects discharge means communicating with said screening passage for discharging the fraction of the suspension rejected by said screen, accepts discharge means for discharging the fraction of the supsension accepted by said screen, a rotatable drive shaft including a portion connectible to a driving means and another portion eccentric to said connectible portion, driving means connected to said connectible portion of said drive shaft for rotatably driving said drive shaft through said connectible portion thereof, at least one of said wall members being orbitally movable, means connecting said orbitally movable wall member to said eccentric portion of said drive shaft to cause driven rotation of said drive shaft by said driving means to provide orbital movement of said orbitally movable wall member, means for restraining rotation of said orbitally movable wall member during its said orbital movement, and balancing means for countering the forces generated during operation of the apparatus.
Claim 3
Dependent Claim
78 words
Fractionating apparatus according to claim 1, wherein said wall members are on generally vertical axes, said screen is the only circumferentially perforate one of said wall members and also the outer one of said wall members, said screening passage is generally annular and generally vertical, said inlet means communicates with the upper end of said screening passage for supplying fluid suspension thereto, and the other side of said screening passage is bounded by a wall of said casing.
Claim 4
Dependent Claim
25 words
Fractionating apparatus according to claim 2, wherein said connecting means connects said screen to said eccentric portion of said drive shaft for said orbital movement.
Claim 5
Dependent Claim
39 words
Fractionating apparatus according to claim 3, further comprising means for supplying dilution liquid to said screening passage, said dilution liquid supplying means being connected to said screening passage only substantially spaced below the upper end of said screening passage.
Claim 6
Dependent Claim
49 words
Fractionating apparatus according to claim 3, wherein said annular wall members include an annular wall member spaced inwardly of said accepts face of said screen cooperating therewith to bound opposite sides of an annular accepts receiving chamber, and said screen is orbitally movable relative to such annular wall member.
Claim 7
Dependent Claim
70 words
Fractionating apparatus according to claim 3, further comprising generally annular gutter means within the upper end of said casing interconnecting said inlet means and said screening passage, and wall means defining a restricted opening through which fluid suspension must flow to pass from said inlet means to said screening passage through said gutter means, said opening preventing large material in the fluid suspension from so passing to said screening passage.
Claim 8
Dependent Claim
18 words
Fractionating apparatus accOrding to claim 6, wherein said restricted opening communicates said gutter means with said screening passage.
Claim 9
Dependent Claim
20 words
Fractionating apparatus according to claim 7, wherein said restricted opening is disposed adjacent the inner periphery of said gutter means.
Claim 10
Dependent Claim
54 words
Fractionating apparatus according to claim 7, wherein said inlet means is tangentially connected to said gutter means, and further comprising wall means transversely to the flow of fluid suspension in said gutter means, and outlet means at the bottom of said gutter means adjacent said wall means for discharging material from said gutter means.
Claim 11
Dependent Claim
127 words
Fractionating apparatus according to claim 1, wherein said wall members are on generally vertical axes, said screen is the outer one of said wall members, said screening passage is generally annular and generally vertical, said inlet means communicates with the upper end of said screening passage for supplying fluid suspension to such upper end, the outer side of said screening passage is bounded by a wall of said casing, a said wall member internally of said screen cooperates with said accepts side face of said screen to bound opposite sides of a generally annular accepts receiving space, such wall member is circumferentially perforate, and said connecting means connects such wall member to said eccentric portion of said drive shaft for driven orbital movement relative to said screen.
Claim 12
Dependent Claim
39 words
Fractionating apparatus according to claim 10, wherein said casing wall and said screen relatively converge as they extend downwardly from the upper end of said screening passage, thereby causing said screening passage to be of downwardly decreasing annular cross-section.
Claim 13
Dependent Claim
12 words
Fractionating apparatus, according to claim 10, wherein said casing wall is stepped.
Claim 14
Dependent Claim
45 words
Fractionating apparatus according to claim 10, wherein said casing wall and said screen relatively converge as they extend downwardly from the upper end of said screening passage, thereby causing said screening passage to be of downwardly decreasing annular cross-section, and said casing wall is stepped.
Claim 15
Dependent Claim
51 words
Fractionating apparatus according to claim 1, further comprising pre-screening means in said casing defining a restricted opening through which fluid suspension must flow to pass from said inlet means to said screening side face, said restricted opening preventing large material in the fluid suspension from passing to said screening side face.
Claim 16
Dependent Claim
36 words
Fractionating apparatus according to claim 14, further comprising generally annular gutter means in said casing interconnecting said inlet means and said screening passage, and wherein said restricted opening communicates said gutter means with said screening passage.
Claim 17
Dependent Claim
20 words
Fractionating apparatus according to claim 15, wherein said restricted opening is disposed adjacent the inner periphery of said gutter means.
Claim 18
Dependent Claim
55 words
Fractionating apparatus according to claim 15, wherein said inlet means is tangentially connected to said gutter means, and further comprising wall means transversely to the the flow of fluid suspension in said gutter means, and outlet means at the bottom of said gutter means adjacent said wall means for discharging material from said gutter means.
Claim 19
Dependent Claim
20 words
Fractionating apparatus according to claim 17, wherein said restricted opening is disposed adjacent the inner periphery of said gutter means.
Claim 20
Dependent Claim
27 words
Fractionating apparatus according to claim 14, wherein said pre-screening means comprises a plurality of laterally spaced apart rod-like elements therebetween defining a plurality of said restricted openings.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |