US3407880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire extinguisher utilizing products of combustion
Assignee: Individual
•
Filing: 1966-11-25
•
Granted: 1968-10-29
•
Expires: 1986-11-25
Abstract
No abstract record available.
Inventors
- 👤 Charles B Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:04
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/009; A62C5/00; A62C5/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF EXTINGUISHING FIRE WITHIN A SUBSTANTIALLY ENCLOSED AREA THAT COMPRISES THE STEPS OF: (A) CIRCULATING THE HEATED AIR AND PRODUCTS OF COMBUSTION WITHIN SAID ROOM THROUGH AN OPEN ENDED PASSAGEWAY WITHIN SAID AREA BY (B) EJECTING A FLUID FIRE EXTINGUISHING FLUID INTO SAID PASSAGEWAY FROM A POINT BETWEEN ITS ENDS IN A DIRECTION TOWARD AND OUT OF ONE END THEREOF TO INDUCE SAID CIRCULATION AND, AT THE SAME TIME (C) ENTRAINING A FIRE NEUTRALIZING AGENT WITH SAID FLUID WITHIN SAID PASSAGEWAY BETWEEN SAID POINT AND SAID ONE END, WHICH AGENT IS ADAPTED TO NEUTRALIZE PARTIALLY COMBUSTIBLE MATTER AND COMBUSTION PROMOTING FLUIDS AND SOLIDS THAT MAY BE CIRCULATED WITH SAID HEATED AIR AND PRODUCTS OF COMBUSTION.
Claim 2
Independent Claim
117 words
A METHOD OF EXTINGUISHING FIRE WITHIN A SUBSTANTIALLY ENCLOSED AREA THAT COMPRISES THE STEPS OF: (A) CIRCULATING THE HEATED AIR AND PRODUCTS OF COMBUSTION WITHIN SAID ROOM THROUGH AN OPEN ENDED PASSAGEWAY WITHIN SAID AREA BY (B) EJECTING A FLUID FIRE EXTINGUISHING FLUID INTO SAID PASSAGEWAY FROM A POINT BETWEEN ITS ENDS IN A DIRECTION TOWARD AND OUT OF ONE END THEREOF TO INDUCE SAID CIRCULATION AND, AT THE SAME TIME (C) ENTRAINING A FIRE NEUTRALIZING AGENT WITH SAID FLUID WITHIN SAID PASSAGEWAY BETWEEN SAID POINT AND SAID ONE END, WHICH AGENT IS ADAPTED TO NEUTRALIZE PARTIALLY COMBUSTIBLE MATTER AND COMBUSTION PROMOTING FLUIDS AND SOLIDS THAT MAY BE CIRCULATED WITH SAID HEATED AIR AND PRODUCTS OF COMBUSTION.
References Cited (Backward Citations)
US2259501A
Cited
US2498512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |