US4790807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge arrangement
Assignee: Fresenius SE and Co KGaA
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Filing: 1987-09-23
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Granted: 1988-12-13
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Expires: 2007-09-23
Abstract
Abstract The invention relates to a centrifuge arrangement having a centrifuge rotor comprising a drive disc (18) connected to a drive source. Furthermore, the centrifuge rotor comprises at least one separation container (1, 32) which comprises a separation passage (6) and a separation chamber (9) whose outlet and inlet passages lead to the center of the drive disc (18). Advantageously, the separation container (1, 32) is made as self-supporting part of rigid or semi-rigid but flexible material and this makes it possible to insert said container easily into the drive disc (18) and in addition provides advantages in the production of the centrifuge arrangement according to the invention.
Inventors
- 👤 Hans-Jurgen Neumann
- 👤 Wolfram Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:59
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; B04B5/0442; B04B5/0407; B04B5/0428
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
140 words
Centrifuge arrangement comprising a centrifuge rotor which has the following components: a drive disc, a substantially perpendicular annular wall defining an inwardly disposed face formed on the periphery of said drive disc, a separation container disposed on the drive disc, said separation container defining outer surfaces, at least parts of the separation container outer surfaces bearing against said inwardly disposed face of said annular wall, a groove formed in the surface of the drive disc adjacent said annular wall, said separation container defining a bottom surface seated in said groove, said separation container comprising a separation passage, an inlet passage and a plurality of outlet passages for fluids, the separation container being formed as a self-supporting part of flexible material, and including an upper wall for said separation container, said upper wall forming a fluid-tight cover for the separation passage.
Claim 2
Dependent Claim
140 words
Centrifuge arrangement comprising a centrifuge rotor which has the following components: a drive disc, a substantially perpendicular annular wall defining an inwardly disposed face formed on the periphery of said drive disc, a separation container disposed on the drive disc, said separation container defining outer surfaces, at least parts of the separation container outer surfaces bearing against said inwardly disposed face of said annular wall, a groove formed in the surface of the drive disc adjacent said annular wall, said separation container defining a bottom surface seated in said groove, said separation container comprising a separation passage, an inlet passage and a plurality of outlet passages for fluids, the separation container being formed as a self-supporting part of flexible material, and including an upper wall for said separation container, said upper wall forming a fluid-tight cover for the separation passage.
Claim 3
Dependent Claim
29 words
Centrifuge arrangement according to claim 1, in which the annular wall is disposed at the radially outermost edge of the drive disc and extends around the entire periphery thereof.
Claim 4
Dependent Claim
21 words
Centrifuge arrangement according to claim 1, in which the annular wall comprises at its upper edge a radially inwardly extending projection.
Claim 5
Dependent Claim
36 words
Centrifuge arrangement according to claim 3, in which the projection runs round the entire periphery of the annular wall and thus forms a ring of lesser internal diameter than the internal diameter of the annular wall.
Claim 6
Dependent Claim
33 words
Centrifuge arrangement according to claim 1, in which the separation container is constructed as a ring and is inserted under bias into the space defined by the annular wall on the drive disc.
Claim 7
Dependent Claim
30 words
Centrifuge arrangement according to claim 5, in which the separation container after location in the drive disc defines a smaller distance from the rotation axis than in the non-located state.
Claim 8
Dependent Claim
137 words
Centrifuge arrangement comprising a centrifuge rotor which has the following components: a drive disc, a base plate defined by said drive disc, an upstanding annular wall defining an inner surface formed on the periphery of said base plate, a separation container comprising a separation passage formed by inner, outer, upper and lower boundary walls, an inlet passage and a plurality of outlet passages for fluids, the separation container being formed of rigid or semi-rigid material providing a self-supporting part substantially free of diameter and height fluctuations during operation, said separation container being sufficiently flexible to permit placement of the outer boundary wall thereof in bearing engagement with said inner surface of said annular wall upon location of the separation chamber in said drive disc, and wherein the inner boundary wall is substantially free of support during operation.
Claim 9
Dependent Claim
137 words
Centrifuge arrangement comprising a centrifuge rotor which has the following components: a drive disc, a base plate defined by said drive disc, an upstanding annular wall defining an inner surface formed on the periphery of said base plate, a separation container comprising a separation passage formed by inner, outer, upper and lower boundary walls, an inlet passage and a plurality of outlet passages for fluids, the separation container being formed of rigid or semi-rigid material providing a self-supporting part substantially free of diameter and height fluctuations during operation, said separation container being sufficiently flexible to permit placement of the outer boundary wall thereof in bearing engagement with said inner surface of said annular wall upon location of the separation chamber in said drive disc, and wherein the inner boundary wall is substantially free of support during operation.
Claim 10
Dependent Claim
34 words
Centrifuge arrangement according to claim 7 wherein one of the boundary walls is formed as a fluid-tight cover permanently attachable to an open side defined by the other boundary walls forming the separation passage.
Claim 11
Dependent Claim
43 words
Centrifuge arrangement according to claim 7, in which the separation container comprises one or more separation passages which are circular in a broad region and which at least in relatively large sub-regions have a rectangular cross-section and are connected to a separation chamber.
Claim 12
Dependent Claim
24 words
Centrifuge arrangement according to claim 7, in which the separation passage further comprises two substantially perpendicular passage walls fixedly connected to the passage bottom.
Claim 13
Dependent Claim
34 words
Centrifuge arrangement according to claim 7, in which the opposite ends of the separation container comprise one or more radially outwardly extending projections which engage in a corresponding depression defined by said annular wall.
Claim 14
Dependent Claim
22 words
Centrifuge arrangement according to claim 7, in which the separation container is an unclosed ring whose opposing ends define an intermediate space.
Claim 15
Dependent Claim
19 words
Centrifuge arrangement according to claim 7, in which the separation passage is formed from two passage walls disposed concentrically.
Claim 16
Dependent Claim
28 words
Centrifuge arrangement according to claim 7, in which with a two-stage separation a further separation container is disposed within the inner circle defined by the first-mentioned separation container.
Claim 17
Dependent Claim
16 words
Centrifuge arrangement according to claim 7, in which said further separation container comprises an egg-shaped configuration.
Claim 18
Dependent Claim
36 words
Centrifuge arrangement according to claim 7, in which said further and said first-mentioned separation containers are connected via a passage whereby fluids first separated in one container are transferred to the other container for further separation.
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) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |