US3900416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical devices containing nitroarylsiloxane dielectric fluid
Assignee: Dow Silicones Corp
•
Filing: 1973-12-20
•
Granted: 1975-08-19
•
Expires: 1993-12-20
Abstract
Abstract Improved electrical devices such as transformers and capacitors containing nitroarylsiloxanes as dielectric fluids are disclosed.
Inventors
- 👤 Gary A Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:17
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/321; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/46; H01B3/465; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/22; H01G4/221
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
127 words
IN AN ELECTRICAL DEVICE CONTAINING A DIELECTRIC FLUID, THE IMPROVEMENT COMPRISING EMPLOYING AS THE DIELECTRIC FLUID A SILOXANE WHICH CONSISTS ESSENTIALLY OF FROM 1 TO 100 MOLE PERCENT OF RXR''YSIO(4-(X+Y)/2) SILOXANE UNITS WHEREIN X HAS AN AVERAGE VALUE OF FROM 1 TO 3, Y HAS AN AVERAGE VALUE OF FROM 0 TO 2, THE SUM OF X+Y BEING FROM 1 TO 3, R IS A NITROARYL RADICAL CONTAINING FROM 6 TO 18 CARBON ATOMS, AND R'' IS AN ALKYL, ARYL, ALKARYL RADICAL CONTAINING FROM 1 TO 18 CARBON ATOMS, AND FROM 0 TO 99 MOLE PERCENT R" ZSIO(4-Z)/2 SILOXANE UNITS WHEREIN Z HAS AN AVERAGE VALUE FROM 0 TO 3 AND R" IS AN ALKYL, ARYL, ALKARYL OR ARALKYL RADICAL CONTAINING FROM 1 TO 18 CARBON ATOMS.
Claim 2
Dependent Claim
127 words
IN AN ELECTRICAL DEVICE CONTAINING A DIELECTRIC FLUID, THE IMPROVEMENT COMPRISING EMPLOYING AS THE DIELECTRIC FLUID A SILOXANE WHICH CONSISTS ESSENTIALLY OF FROM 1 TO 100 MOLE PERCENT OF RXR''YSIO(4-(X+Y)/2) SILOXANE UNITS WHEREIN X HAS AN AVERAGE VALUE OF FROM 1 TO 3, Y HAS AN AVERAGE VALUE OF FROM 0 TO 2, THE SUM OF X+Y BEING FROM 1 TO 3, R IS A NITROARYL RADICAL CONTAINING FROM 6 TO 18 CARBON ATOMS, AND R'' IS AN ALKYL, ARYL, ALKARYL RADICAL CONTAINING FROM 1 TO 18 CARBON ATOMS, AND FROM 0 TO 99 MOLE PERCENT R" ZSIO(4-Z)/2 SILOXANE UNITS WHEREIN Z HAS AN AVERAGE VALUE FROM 0 TO 3 AND R" IS AN ALKYL, ARYL, ALKARYL OR ARALKYL RADICAL CONTAINING FROM 1 TO 18 CARBON ATOMS.
Claim 3
Dependent Claim
25 words
An electrical device as defined in claim 1 wherein the dielectric fluid has a viscosity in the range of 5 to 500 cs. at 25*C.
Claim 4
Dependent Claim
12 words
An electrical device as defined in claim 2 which is a transformer.
Claim 5
Dependent Claim
36 words
A TRANSFORMER AS DEFINED IN CLAIM 3 WHEREIN IN THE SILOXANE R CONTAINS FROM 6 TO 12 CARBON ATOMS, R'' CONTAINNS FROM 1 TO 6 CARBON ATOMS, AND R" CONTAINS FROM 1 TO 6 CARBON ATOMS.
Claim 6
Dependent Claim
24 words
A transformer as defined in claim 4 wherein R is a nitrophenyl radical, R'' is a methyl radical, and R'''' is a methyl radical.
Claim 7
Dependent Claim
15 words
A transformer as defined in claim 5 wherein the siloxane consists essentially of (CH3)3SiO1/2 and
Claim 8
Dependent Claim
14 words
A transformer as defined in claim 5 wherein the siloxane consists essentially of (CH3)3SiO1/2,
Claim 9
Dependent Claim
16 words
A transformer as defined in claim 5 wherein the siloxane consists essentially of (CH3)3SiO1/2, (CH3)2SiO and
Claim 10
Dependent Claim
15 words
A transformer as defined in claim 5 wherein the siloxane consists essentially of (CH3)3SiO1/2 and
Claim 11
Dependent Claim
12 words
An electrical device as defined in claim 2 which is a capacitor.
Claim 12
Dependent Claim
36 words
A capacitor as defined in claim 10 wherein in the siloxane R contains from 6 to 12 carbon atoms, R'' contains from 1 to 6 carbon atoms, and R'''' contains from 1 to 6 carbon atoms.
Claim 13
Dependent Claim
24 words
A capacitor as defined in claim 11 wherein R is a nitrophenyl radical, R'' is a methyl radical, and R'''' is a methyl radical.
Claim 14
Dependent Claim
15 words
A capacitor as defined in claim 12 wherein the siloxane consists essentially of (CH3)3SiO1/2 and
Claim 15
Dependent Claim
14 words
A capacitor as defined in claim 12 wherein the siloxane consists essentially of (CH3)3SiO1/2,
Claim 16
Dependent Claim
16 words
A capacitor as defined in claim 12 wherein the siloxane consists essentially of (CH3)3SiO1/2, (CH3)2SiO and
Claim 17
Dependent Claim
15 words
A capacitor as defined in claim 12 wherein the siloxane consists essentially of (CH3)3SiO1/2 and
References Cited (Backward Citations)
US3479320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |