Patent US3269028A successfully refreshed from Google Patents.
US3269028A
Expired / Lapsed
US
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Centrifgal separator
Assignee: Individual
•
Filing: 1962-10-01
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Granted: 1966-08-30
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Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Philippe P Strich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:30
CPC Classifications
B; B04; B04B; B04B7/00; B04B7/08; B04B7/12; B04B7/16; B04B3/00; B04B7/18; Y; Y10; Y10S; Y10S159/00; Y10S159/03
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
A FILTERING CONE FOR A CENTRIFUGAL SEPARATOR, SAID CONE COMPRISING: (A) A FRUSTO-CONICAL BASKET, (B) AN ANNULAR FLANGE AT THE BASE OF SAID BASKET, (C) AN ANNULAR GROOVE IN SAID FLANGE, (D) AT LEAST ONE LAYER OF RELATIVELY COARSE SCREENING COVERING THE INNER SURFACE OF SAID BASKET AND INDEPENDENT MEANS FOR SECURING SAID SCREENING TO SAID BASKET, (E) A VERY FINE SCREEN COVERING SAID LAYER OF RELATIVELY COARSE SCREENING, THE EDGE OF SAID VERY FINE SCREEN ADJACENT THE BASE OF SAID BASKET BEING ENGAGED IN SAID GROOVE IN SAID FLANGE, AND (F) ADDITIONAL INDEPENDENT MEANS FOR SECURING SAID VERY FINE SCREEN TO THE APEX OF SAID BASKET WHEREBY SAID VERY FINE SCREEN CAN BE REMOVED WITHOUT SUBSTANTIALLY DISTURBING SAID RELATIVELY COARSE SCREENING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |