US4226728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire extinguisher and fire extinguishing composition
Assignee: EVANS PAT
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Filing: 1978-05-16
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Granted: 1980-10-07
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Expires: 1998-05-16
Abstract
Abstract An improved fire extinguishing composition is described using two differing fire extinguishing fluids with or without the use of a nonfluorocarbon propellant. The two fire extinguishing fluids are a low vapor pressure halogenated alkane such as bromochlorodifluoromethane and a higher vapor pressure halogenated alkane such as bromotrichloromethane. The fire extinguishing composition is self propelled. Minor proportions of a propellant such as propane or carbon dioxide may be combined with the extinguishing composition for dispensing from an aerosol-type container.
Inventors
- 👤 Shin H. Kung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:27
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0028; A62D1/0057
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
70 words
An improved extinguishing compound for use in low pressure, aerosol fire extinguishers consisting of between about 10 and 90% of a low vapor pressure halogenated alkane selected from the group consisting of trichlorofluoromethane, dibromodifluoromethane, bormochlorodifluoromethane and 1,2-dibromotetrafluoroethane and between about 4 and 96% of a high vapor pressure halogenated alkane selected from the group consisting of, bromotrifluoromethane, and chloropentafluoroethane, all of said percentages being by weight of the extinguishing compound.
Claim 2
Dependent Claim
70 words
An improved extinguishing compound for use in low pressure, aerosol fire extinguishers consisting of between about 10 and 90% of a low vapor pressure halogenated alkane selected from the group consisting of trichlorofluoromethane, dibromodifluoromethane, bormochlorodifluoromethane and 1,2-dibromotetrafluoroethane and between about 4 and 96% of a high vapor pressure halogenated alkane selected from the group consisting of, bromotrifluoromethane, and chloropentafluoroethane, all of said percentages being by weight of the extinguishing compound.
Claim 3
Dependent Claim
33 words
The improved extinguishing compound of claim 1 wherein said low vapor pressure halogenated alkane is between about 50 and 96% and said high vapor pressure halogenated alkane is between about 4 and 50%.
Claim 4
Dependent Claim
16 words
The improved extinguishing compound of claim 1 wherein said low vapor pressure halogenated alkane is trichlorofluoromethane.
Claim 5
Dependent Claim
16 words
The improved extinguishing compound of claim 1 wherein said low vapor pressure halogenated alkane is dibromodifluoromethane.
Claim 6
Dependent Claim
16 words
The improved extinguishing compound of claim 1 wherein said low vapor pressure halogenated alkane is bromochlorodifluoromethane.
Claim 7
Dependent Claim
16 words
The improved extinguishing compound of claim 1 wherein said low vapor pressure halogenated alkane is 1,2-dibromotetrafluoroethane.
Claim 8
Dependent Claim
16 words
The improved extinguishing compound of claim 1 wherein said high vapor pressure halogenated alkane is bromotrifluoromethane.
Claim 9
Dependent Claim
16 words
The improved extinguishing compound of claim 1 wherein said high vapor pressure halogenated alkane is chloropentafluoroethane.
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) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |