Patent US4347169A successfully refreshed from Google Patents.
US4347169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical insulating oil and oil-filled electrical appliances
Assignee: Eneos Corp
•
Filing: 1981-06-23
•
Granted: 1982-08-31
•
Expires: 2001-06-23
Abstract
Abstract An electrical insulating oil and oil-filled electrical appliances, in which the insulating oil comprises a mixture of diarylalkanes and alkyl-3-arylindane derivatives and/or 1,3-diarylbutene derivatives, and has various advantageous properties such as a high dielectric constant, hydrogen gas absorbing capacity, and adaptability to plastic film materials. By impregnating with the above insulating oil, high performance and long life electrical appliances can be manufactured.
Inventors
- 👤 Atsushi Sato
- 👤 Naoya Takahashi
- 👤 Keiji Endo
- 👤 Hitoshi Yanagishita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:23
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/22; H01G4/221; C; C10; C10M; C10M105/00; C10M105/02; C10M105/06; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22; H01B3/30; H01B3/44; H01B3/441; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/026; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
69 words
An electrical insulating oil comprising at least one member of diarylalkanes and at least one member selected from the group consisting of the compounds represented by the general formulae (I) to (IV): ##STR3## wherein each of R 1 to R 4 is a hydrogen atom or a methyl group and the total number of carbon atoms in R 1 to R 4 is an integer from zero to 2.
Claim 2
Dependent Claim
69 words
An electrical insulating oil comprising at least one member of diarylalkanes and at least one member selected from the group consisting of the compounds represented by the general formulae (I) to (IV): ##STR3## wherein each of R 1 to R 4 is a hydrogen atom or a methyl group and the total number of carbon atoms in R 1 to R 4 is an integer from zero to 2.
Claim 3
Dependent Claim
53 words
The electrical insulating oil in claim 1, wherein said insulating oil consists essentially of 1 part by weight of said diarylalkanes and 0.01 to 9 parts by weight of alkyl-3-arylindane derivatives represented by said formula (1) and/or 0.001 to 0.2 part by weight of 1,3-diarylbutene derivatives represented by said formulae (II) to (IV).
Claim 4
Dependent Claim
12 words
The electrical insulating oil in claim 1, wherein said diarylalkanes are diarylethanes.
Claim 5
Dependent Claim
17 words
The electrical insulating oil in claim 1, wherein the alkyl-3-arylindane derivative of said formula (I) is 1-methyl-3-phenylindane.
Claim 6
Dependent Claim
17 words
The electrical insulating oil in claim 1, wherein the 1,3-diarylbutene derivative of said formula (II) is 1,3-diphenylbutene-1.
Claim 7
Dependent Claim
17 words
The electrical insulating oil in claim 1, wherein the 1,3-diarylbutene derivative of said formula (III) is 1,3-diphenylbutene-2.
Claim 8
Dependent Claim
77 words
An oil-filled electrical appliance which is impregnated with an electrical insulating oil comprising at least one member of diarylalkanes and at least one member selected from the group consisting of the compounds represented by the general formulae (I) to (IV): ##STR4## wherein each of R 1 to R 4 is a hydrogen atom or a methyl group and the total number of carbon atoms in R 1 to R 4 is an integer from zero to 2.
Claim 9
Dependent Claim
77 words
An oil-filled electrical appliance which is impregnated with an electrical insulating oil comprising at least one member of diarylalkanes and at least one member selected from the group consisting of the compounds represented by the general formulae (I) to (IV): ##STR4## wherein each of R 1 to R 4 is a hydrogen atom or a methyl group and the total number of carbon atoms in R 1 to R 4 is an integer from zero to 2.
Claim 10
Dependent Claim
53 words
The oil-filled electrical appliance in claim 7, wherein said insulating oil consists essentially of 1 part by weight of said diarylalkanes and 0.01 to 9 parts by weight of alkyl-3-arylindane derivatives represented by said formula (1) and/or 0.001 to 0.2 part by weight of 1,3-diarylbutene derivatives represented by said formulae (II) to (IV).
Claim 11
Dependent Claim
12 words
The oil-filled electrical appliance in claim 7, wherein said diarylalkanes are diarylethanes.
Claim 12
Dependent Claim
17 words
The oil-filled electrical appliance in claim 7, wherein the alkyl-3-arylindane derivative of said formula (I) is 1-methyl-3-phenylindane.
Claim 13
Dependent Claim
17 words
The oil-filled electrical appliance in claim 7, wherein the 1,3-diarylbutene derivative of said formula (II) is 1,3-diphenylbutene-1.
Claim 14
Dependent Claim
17 words
The oil-filled electrical appliance in claim 7, wherein the 1,3-diarylbutene derivative of said formula (III) is 1,3-diphenylbutene-2.
Claim 15
Dependent Claim
20 words
The oil-filled electrical appliance in any one of claims 7 to 12, wherein said oil-filled electrical appliance is a capacitor.
Claim 16
Dependent Claim
21 words
The oil-filled electrical appliance in any one of claims 7 to 12, wherein said oil-filled electrical appliance is an oil-filled cable.
Claim 17
Dependent Claim
32 words
The oil-filled electrical appliance in any one of claims 7 to 12, wherein the insulating material used in said oil-filled electrical appliance is insulating paper or synthetic resin film or their combination.
Claim 18
Dependent Claim
18 words
The oil-filled electrical appliance in claim 15, wherein said synthetic resin film is polypropylene film or polyethylene film.
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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |