US3420450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle means for breaking foam
Assignee: Svenska Cellulosa AB
•
Filing: 1965-05-03
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Granted: 1969-01-07
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Carl Arne Bergholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:14
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A NOZZLE FOR APPARATUS FOR BREAKING FOAM OF BLACK LIQUOR, COMPRISING A SHARPLY CONVERGING INLET DUCT AND A SLIGHTLY DIVERGING OUTLET DUCT, THE AXIAL LENGTH OF WHICH AXCEEDS CONSIDERABLY THE AXIAL LENGTH OF SAID INLET DUCT, THE OUTLET END OF SAID INLET DUCT BEING CONNECTED TO THE INLET END OF SAID OUTLET DUCT BY A SMOOTHLY CURVED WALL DEFINING AN OPENING HAVING SUBSTANTIALLY THE SAME SIZE DUCTS, SHAPE AS THE SMALLEST CROSS-SECTION OF EACH OF SAID DUCTS, CHARACTERIZED IN THAT THE AXIAL LENGTH OF SAID INLET DUCT IS LESS THAN HALF OF THE DIAMETER OF SAID OPENING AND THAT THE OUTLET DUCT HAS THE SHAPE OF A FRUSTUM OF A CONE, THE APEX OF WHICH HAS AN ANGLE OF LESS THAN 15*.
Claim 2
Dependent Claim
122 words
A NOZZLE FOR APPARATUS FOR BREAKING FOAM OF BLACK LIQUOR, COMPRISING A SHARPLY CONVERGING INLET DUCT AND A SLIGHTLY DIVERGING OUTLET DUCT, THE AXIAL LENGTH OF WHICH AXCEEDS CONSIDERABLY THE AXIAL LENGTH OF SAID INLET DUCT, THE OUTLET END OF SAID INLET DUCT BEING CONNECTED TO THE INLET END OF SAID OUTLET DUCT BY A SMOOTHLY CURVED WALL DEFINING AN OPENING HAVING SUBSTANTIALLY THE SAME SIZE DUCTS, SHAPE AS THE SMALLEST CROSS-SECTION OF EACH OF SAID DUCTS, CHARACTERIZED IN THAT THE AXIAL LENGTH OF SAID INLET DUCT IS LESS THAN HALF OF THE DIAMETER OF SAID OPENING AND THAT THE OUTLET DUCT HAS THE SHAPE OF A FRUSTUM OF A CONE, THE APEX OF WHICH HAS AN ANGLE OF LESS THAN 15*.
References Cited (Backward Citations)
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Cited
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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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |