US3786324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor with decreased flammability
Assignee: Individual
•
Filing: 1973-05-04
•
Granted: 1974-01-15
•
Expires: 1993-05-04
Abstract
Abstract A capacitor of the regenerative type having decreased flammability. The capacitor employs as the dielectric fluid a hydrocarbon to which has been added a mixture of perfluorinated hydrocarbons.
Inventors
- 👤 J Kotschy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:21
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/10; H01G2/106; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/22; H01G4/221; H01G4/222
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
28 words
The capacitor of claim 1 wherein, in said fluid, the duration of combustion protection is at least about 5 seconds at each of about 180*C. and about 300*C.
Claim 2
Dependent Claim
89 words
a liquid fluorocarbon mixture comprising: a. at least one first fluorocarbon selected from the group consisting of trifluoromethyl perfluorohydrooxazine and perfluorinated dimethylcyclohexane, b. at least one second fluorocarbon selected from the group consisting of a perfluoroalkylpolyether which has a boiling point of about 152*C, a perfluoroalkylpolyether which has a boiling point of about 194*C, and trifluoromethyl perfluorodecalin, c. the weight ratio of said first fluorocarbon to said second fluorocarbon in any given said fluorocarbon mixture being in the range of from about 0.65 : 1 to 1.3 : 0.5,
Claim 3
Dependent Claim
57 words
the weight ratio of said fluorocarbon liquid to said hydrocarbon liquid being in the range from about 0.00025 : 1 to 0.1 : 1 with this ratio in any given said fluid being such that in said capacitor the duration of combustion protection is at least about 5 seconds at each of about 250*C. and about 300*C.
Claim 4
Dependent Claim
87 words
The capacitor of claim 1 wherein, in said fluid, the hydrocarbon liquid is dodecylbenzene, the liquid fluorocarbon mixture comprises as said first fluorocarbon trifluoromethyl perfluorohydrooxazine, and said second fluorocarbon is selected from the group consisting of a perfluoroalkylpolyether which has a boiling point of about 152*C. and trifluoromethyl perfluorodecaline, and said ratio of said fluorocarbon mixture to said hydrocarbon mixture in any given said fluid being such that the duration of combustion protection is at least aboUt 5 seconds at each of about 150*C. and about 300*C.
Claim 5
Dependent Claim
94 words
The capacitor of claim 1, in said fluid, the hydrocarbon liquid is dioctylsebacate, and the liquid fluorocarbon mixture comprises as said first fluorocarbon perfluorinated dimethylcyclohexane and said second fluorocarbon is selected from the group consisting of a perfluoroalpolyether which has a boiling point of about 152*C. and a perfluoroalkylpolyether which has a boiling point of about 194*C. and said ratio of said fluorocarbon mixture to said hydrocarbon mixture in any given said fluid being such that the duration of combustion protection is at least about 5 seconds at each of about 250*C. and 300*C.
Claim 6
Dependent Claim
29 words
The capacitor as defined in claim 1, wherein said first fluorocarbon is trifluoromethyl perfluorohydrooxazine and said second fluorocarbon is a perfluoroalkylpolyether which has a boiling point of about 152*C.
Claim 7
Dependent Claim
29 words
The capacitor as defined in claim 1, wherein said first fluorocarbon is trifluoromethyl perfluorohydrooxazine and said second fluorocarbon is a perfluoroalkylpolyether which has a boiling point of about 194*C.
Claim 8
Dependent Claim
21 words
The capacitor as defined in claim 1, wherein said first fluorocarbon is trifluoromethyl perfluorohydrooxazine and said second fluorocarbon is trifluoromethyl perfluorohydrooxazine.
Claim 9
Dependent Claim
29 words
The capacitor as defined in claim 1, wherein said first fluorocarbon is perfluorinated dimethylcyclohexane and said second fluorocarbon is a perfluoroalkylpolyether which has a boiling point of about 152*C.
Claim 10
Dependent Claim
30 words
The capacitor as defined in claim 1, wherein said first fluorocarbon is perfluorinated dimethylcyclohexane and said second fluorocarbon is a perfluoroalkylpolyether which has a boiling point of about 194* C.
Claim 11
Dependent Claim
22 words
The capacitor as defined in claim 1, wherein said first fluorocarbon is perfluorinated dimethylcyclohexane and said second fluorocarbon is a trifluoromethyl perfluorodecalin.
Claim 12
Dependent Claim
29 words
The capacitor as defined in claim 3, wherein said first fluorocarbon is trifluoromethyl perfluorohydrooxazine and said second fluorocarbon is a perfluoroalkylpolyether which has a boiling point of about 152*C.
Claim 13
Dependent Claim
22 words
The capacitor as defined in claim 3, wherein said first fluorocarbon is trifluoromethyl perfluorohydrooxazine and said second fluorocarbon is a trifluoromethyl perfluorodecalin.
Claim 14
Dependent Claim
29 words
The capacitor as defined in claim 3, wherein said first fluorocarbon is perfluorinated dimethylcyclohexane and said second fluorocarbon is a perfluoroalkylpolyether which has a boiling point of about 194*C.
Claim 15
Dependent Claim
21 words
The capacitor of claim 1, wherein said hydrocarbon liquid is selected from the group consisting of mineral oil, dodecylbenzene, and dioctylsebacate.
Claim 16
Dependent Claim
38 words
The capacitor of claim 14, wherein said mineral oil comprises, on a 100 weight percent total mineral oil basis, about 56 weight percent paraffinic constituents, about 29 weight of naphthalenic constituents, and about 15 weight percent aromatic constituents.
Claim 17
Dependent Claim
12 words
The capacitor of claim 1, wherein said hydrocarbon liquid is dioctyl sebacate.
Claim 18
Dependent Claim
11 words
The capacitor of claim 1, wherein said hydrocarbon liquid is dodecylbenzene.
Claim 19
Dependent Claim
10 words
The capacitor of claim 1, wherein said polyolefin is polypropylene.
References Cited (Backward Citations)
US2433729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |