Patent US3334751A successfully refreshed from Google Patents.
US3334751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal drums
Assignee: Salzgitter Maschinen AG
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Filing: 1965-06-14
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Granted: 1967-08-08
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Jaekel Werner
- 👤 Buege Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:32
CPC Classifications
B; B04; B04B; B04B7/00; B04B7/08; B04B7/18; B04B11/00; B04B11/04; B04B11/05; B04B3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A CENTRIFUGAL DRUM FOR THE SEPARATION OF SOLID MATERIAL FROM LIQUIDS COMPRISING AN IMPERFORATE AXIALLY ROTATABLE CASING WITH CENTRE AND AXIAL END PORTIONS, A BASE AND A COVER, A SIEVE FITTING BEING CARRIED INTERNALLY OF THE CASING OVER SAID CENTRE AND AXIAL END PORTIONS, INTERNAL HOLLOW RINGS IN THE FORM OF RECESSED ANNULAR SPACES DEFINED BY SAID AXIAL END PORTIONS, ADDITIONAL LOWER SIEVES
Claim 2
Dependent Claim
63 words
A CENTRIFUGAL DRUM FOR THE SEPARATION OF SOLID MATERIAL FROM LIQUIDS COMPRISING AN IMPERFORATE AXIALLY ROTATABLE CASING WITH CENTRE AND AXIAL END PORTIONS, A BASE AND A COVER, A SIEVE FITTING BEING CARRIED INTERNALLY OF THE CASING OVER SAID CENTRE AND AXIAL END PORTIONS, INTERNAL HOLLOW RINGS IN THE FORM OF RECESSED ANNULAR SPACES DEFINED BY SAID AXIAL END PORTIONS, ADDITIONAL LOWER SIEVES
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |