US3930608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifuge
Assignee: Sulzer Escher Wyss AG
•
Filing: 1973-09-10
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Granted: 1976-01-06
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Expires: 1993-09-10
Abstract
Abstract A centrifuge with a solid-walled drum subdivided into two zones, in the first of which the movement of the solids is controlled by a pushing means, and in the second of the two zones a deposition channel for the solids is arranged, said channel being located outside the region of said pushing means and having a bottom outlet for the solids.
Inventors
- 👤 Martin Baram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:26
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/14; B04B1/20; B04B5/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A centrifuge comprising a solid-walled drum having an inlet for a mixture of liquid and solids which is to be centrifuged, and overflow for the clarified liquid, and an outlet for the solids; and pushing means for controlling movement of the solids in the drum towards said outlet, and characterized in that the drum is subdivided into two zones, the pushing means being located in the first zone and arranged to move solids through this zone and into the second zone, and the second zone having a deposition channel for solids which is located outside the region of the pushing means and has said outlet for solids located at its bottom.
Claim 2
Dependent Claim
111 words
A centrifuge comprising a solid-walled drum having an inlet for a mixture of liquid and solids which is to be centrifuged, and overflow for the clarified liquid, and an outlet for the solids; and pushing means for controlling movement of the solids in the drum towards said outlet, and characterized in that the drum is subdivided into two zones, the pushing means being located in the first zone and arranged to move solids through this zone and into the second zone, and the second zone having a deposition channel for solids which is located outside the region of the pushing means and has said outlet for solids located at its bottom.
Claim 3
Dependent Claim
37 words
A centrifuge as defined in claim 1 in which the drum has a portion which bears deposited solids and extends, in both zones, below said overflow for clarified liquid, whereby both zones have a common liquid level.
Claim 4
Dependent Claim
21 words
A centrifuge as defined in claim 1 in which at least part of said drum in the first zone is cylindrical.
Claim 5
Dependent Claim
20 words
A centrifuge as defined in claim 1 in which the size of said outlet for solids is adjustable during operation.
Claim 6
Dependent Claim
26 words
A centrifuge as defined in claim 1 in which said outlet for solids is formed by two rings which are axially slidable relatively to one another.
Claim 7
Dependent Claim
22 words
A centrifuge as defined in claim 5 including a spring which presses the two rings towards one another in the axial direction.
References Cited (Backward Citations)
US499349A
Cited
US686917A
Cited
US1640707A
Cited
US2276824A
Cited
US2308559A
Cited
FR902500A
Cited
CH406362A
Cited
GB998669A
Cited
US3771715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |