Patent US2631977A successfully refreshed from Google Patents.
US2631977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free flowing fire extinguishing compositions
Assignee: CO Two Fire Equipment Co
•
Filing: 1949-12-12
•
Granted: 1953-03-17
•
Expires: 1969-12-12
Abstract
No abstract record available.
Inventors
- 👤 Scott E Allen
- 👤 Levin David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:06
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE IMPROVEMENTS IN SODIUM BICARBONATE FIRE EXTINGUISHING COMPOSITIONS FOR EXPULSION IN A FINELY-DIVIDED FORM AND IN A FREE-FLOWING CONDITION FROM A FIRE EXTINGUISHER BY A GAS UNDER PRESSURE, WHICH COMPRISES A FREE-FLOWING MIXTURE OF SODIUM BICARBONATE IN AN AMOUNT FROM 76% TO 99% OF THE MIXTURE, BY WEIGHT, SUBSTANTIALLY ALL OF WHICH WILL PASS THROUGH A 200-MESH SIEVE, FROM 1/2% TO 20% OF FINELY POWDERED MICA, FROM 1/2% TO 3% OF A FINELY-DIVIDED, WATER-INSOLUBLE METALLIC SALT OF A SATURATED FATTY ACID HAVING FROM 12 TO ABOUT 18 CARBON ATOMS, THE MAJOR PORTION OF WHICH WILL PASS THROUGH A 200-MESH SIEVE, WHICH MIXTURE IS CHARACTERIZED BY HAVING THE PROPERTIES OF REMAINING IN THE FIRE EXTINGUISHER WITHOUT LUMPING OR CAKING, OF NOT LUMPING OR CAKING WHEN INITIALLY SUBJECTED TO GAS PRESSURE IN THE FIRE EXTINGUISHER, AND OF REMAINING IN THE FIRE EXTINGUISHER IN A CONDITION FOR FREE-FLOW DISCHARGE THEREFROM.
Claim 2
Dependent Claim
147 words
THE IMPROVEMENTS IN SODIUM BICARBONATE FIRE EXTINGUISHING COMPOSITIONS FOR EXPULSION IN A FINELY-DIVIDED FORM AND IN A FREE-FLOWING CONDITION FROM A FIRE EXTINGUISHER BY A GAS UNDER PRESSURE, WHICH COMPRISES A FREE-FLOWING MIXTURE OF SODIUM BICARBONATE IN AN AMOUNT FROM 76% TO 99% OF THE MIXTURE, BY WEIGHT, SUBSTANTIALLY ALL OF WHICH WILL PASS THROUGH A 200-MESH SIEVE, FROM 1/2% TO 20% OF FINELY POWDERED MICA, FROM 1/2% TO 3% OF A FINELY-DIVIDED, WATER-INSOLUBLE METALLIC SALT OF A SATURATED FATTY ACID HAVING FROM 12 TO ABOUT 18 CARBON ATOMS, THE MAJOR PORTION OF WHICH WILL PASS THROUGH A 200-MESH SIEVE, WHICH MIXTURE IS CHARACTERIZED BY HAVING THE PROPERTIES OF REMAINING IN THE FIRE EXTINGUISHER WITHOUT LUMPING OR CAKING, OF NOT LUMPING OR CAKING WHEN INITIALLY SUBJECTED TO GAS PRESSURE IN THE FIRE EXTINGUISHER, AND OF REMAINING IN THE FIRE EXTINGUISHER IN A CONDITION FOR FREE-FLOW DISCHARGE THEREFROM.
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) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |