Patent US4148722A successfully refreshed from Google Patents.
US4148722A
Expired / Lapsed
US
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Multiple hydrocyclone arrangement
Assignee: Stora Enso Oyj
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Filing: 1977-10-26
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Granted: 1979-04-10
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Expires: 1997-10-26
Abstract
Abstract A hydrocyclone assembly consisting of two identical hydrocyclones having accept tubes directed against each other so that the longitudinal axes of the hydrocyclones are aligned, and including a joint feed chamber and a joint accept chamber in which the combined accept fraction from the hydrocyclones accumulates. The accept ends of the hydrocyclones' accept tubes are connected with each other and the accept fractions are conducted into and combined in connecting ducts which communicate with the accept chamber.
Inventors
- 👤 Jorma Surakka
- 👤 Matti Lankinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:37
CPC Classifications
D; D21; D21D; D21D5/00; D21D5/18; D21D5/24; B; B04; B04C; B04C5/00; B04C5/24; B04C5/28
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
166 words
A hydrocyclone assembly for the separation of a liquid suspension into accept fractions and reject fractions comprising: at least one pair of generally similar hydrocyclones each having a longitudinal axis and including accept ends, said pair of hydrocyclones being arranged in generally longitudinal alignment end-to-end with their accept ends adjacent each other, each of said hydrocyclones having a joint feed chamber and a joint accept chamber wherein the combined accept fractions from said pair of hydrocyclones accumulate; accept tubes in each of said hydrocyclones, said accept tubes having ends directed against each other; one of said accept tubes of said pair of hydrocyclones including an outer surface; the other of said accept tubes having an expanded cylindrical part with an inner surface concentric with said outer surface; an annular flange accommodated between said outer surface and said inner surface of said expanded cylindrical part; and means defining apertures located in said annular flange for conducting the accept fractions from said accept tubes into said accept chamber.
Claim 2
Dependent Claim
166 words
A hydrocyclone assembly for the separation of a liquid suspension into accept fractions and reject fractions comprising: at least one pair of generally similar hydrocyclones each having a longitudinal axis and including accept ends, said pair of hydrocyclones being arranged in generally longitudinal alignment end-to-end with their accept ends adjacent each other, each of said hydrocyclones having a joint feed chamber and a joint accept chamber wherein the combined accept fractions from said pair of hydrocyclones accumulate; accept tubes in each of said hydrocyclones, said accept tubes having ends directed against each other; one of said accept tubes of said pair of hydrocyclones including an outer surface; the other of said accept tubes having an expanded cylindrical part with an inner surface concentric with said outer surface; an annular flange accommodated between said outer surface and said inner surface of said expanded cylindrical part; and means defining apertures located in said annular flange for conducting the accept fractions from said accept tubes into said accept chamber.
Claim 3
Dependent Claim
53 words
An assembly according to claim 1 including a plate affixed at the juncture of said accept tubes to said inner surface, said plate preventing collision of the accept fractions and defining a gap between the edges of the plate and said inner surface through which the accept fractions discharge into said connecting means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |