Patent US4098772A successfully refreshed from Google Patents.
Patent US3598731A successfully refreshed from Google Patents.
US3598731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple hydrocyclone
Assignee: Celleco AB
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Filing: 1969-11-20
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Granted: 1971-08-10
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Expires: 1989-11-20
Abstract
Abstract A CENTRAL VESSEL IS SURROUNDED BY GROUPS OF HYDROCYCLONES ARRANGED ONE ABOVE ANOTHER, EACH HYDROCYCLONE FORMING AN ELONGATED VORTEX CHAMBER HAVING AN ACCEPT END PROVIDED WITH AN INJECT INLET AND AN AXIAL ACCEPT OUTLET, EACH CHAMBER ALSO HAVING AN OPPOSED REJECT END PROVIDED WITH AN AXIAL REJECT OUTLET. THE CENTRAL VESSEL FORMS AN ACCEPT CHAMBER COMMON TO AND COMMUNICATING WITH THE VORTEX CHAMBERS BY WAY OF THEIR ACCEPT OUTLETS. MEANS ARE PROVIDED AT THE REJECT ENDS OF THE VORTEX CHAMBERS FOR COLLECTING THE REJECT FROM THE REJECT OUTLETS, THE COLLECTING MEANS INCLUDING MEANS IN THE VICINITY OF THE REJECT OUTLETS FOR ENABLING DETECTION OF A CHANGE IN THE REJECT FLOW.
Inventors
- 👤 Rune Helmer Frykhult
- 👤 Karl Folke Olof Jakobsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:03
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/06; C10J3/08; B; B04; B04C; B04C5/00; B04C5/24; B04C5/28; C10J3/46; C10J3/48; C10J3/485; C10J3/487; C10J3/50; C10J3/506; C10J3/52; C10J3/523; C10J3/72; C10J3/74; C10J3/76
Claims Analysis
Total Claims: 0
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |