US3223388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for mixing
Assignee: EIDP Inc
•
Filing: 1963-05-20
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Granted: 1965-12-14
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Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Roger E Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:25
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/32; B29B7/325; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A MIXING APPARATUS COMPRISING (1) AN OUTER SHELL IN THE FORM OF TRUNCATED CONE WITH THE TOP OR SMALLER DIAMETER OF SAID CONE HAVING AT LEAST ONE INLET OPENING AND THE BOTTOM OR LARGER DIAMETER HAVING AT LEAST ONE OUTLET OPENING; (2) A SECOND TRUNCATED CONE AXIALLY POSITIONED WITHIN SAID OUTER SHELL AND INVERTED IN RELATION TO SAID OUTER SHELL; AND (3) A HELICAL OR SPIRAL CHANNEL EXTENDING CONTINUOUSLY THROUGHOUT THE AXIAL LENGTH OF SAID SECOND CONE IN
Claim 2
Dependent Claim
78 words
A MIXING APPARATUS COMPRISING (1) AN OUTER SHELL IN THE FORM OF TRUNCATED CONE WITH THE TOP OR SMALLER DIAMETER OF SAID CONE HAVING AT LEAST ONE INLET OPENING AND THE BOTTOM OR LARGER DIAMETER HAVING AT LEAST ONE OUTLET OPENING; (2) A SECOND TRUNCATED CONE AXIALLY POSITIONED WITHIN SAID OUTER SHELL AND INVERTED IN RELATION TO SAID OUTER SHELL; AND (3) A HELICAL OR SPIRAL CHANNEL EXTENDING CONTINUOUSLY THROUGHOUT THE AXIAL LENGTH OF SAID SECOND CONE IN
References Cited (Backward Citations)
US1189478A
Cited
US1834917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |