Patent US4204084A successfully refreshed from Google Patents.
US4204084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus with dielectric gas mixtures in substantially uniform field
Assignee: Honeywell International Inc
•
Filing: 1978-06-26
•
Granted: 1980-05-20
•
Expires: 1998-06-26
Abstract
Abstract Dielectric gas mixtures are described with improved dielectric strength in uniform fields compared to pure sulfur hexafluoride. Sulfur hexafluoride is mixed with about 1 to about 10 mole % of a noble gas such as helium, argon, krypton or neon and used in a device wherein the dielectric gas is subjected to a substantially uniform field such as compressed gas insulated cable.
Inventors
- 👤 Martin J. Mastroianni
- 👤 Sabatino R. Orfeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:30
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
56 words
In a high voltage electrical apparatus having at least two electrical conductors separated by an insulative dielectric gas subjected to a substantially uniform electrical field, the improvement wherein the insulative gas consists essentially of about 1 to about 10 mole % of a noble gas and about 90 to about 99 mole % of sulfur hexafluoride.
Claim 2
Dependent Claim
56 words
In a high voltage electrical apparatus having at least two electrical conductors separated by an insulative dielectric gas subjected to a substantially uniform electrical field, the improvement wherein the insulative gas consists essentially of about 1 to about 10 mole % of a noble gas and about 90 to about 99 mole % of sulfur hexafluoride.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 wherein said insulative gas is at a pressure between about 40 and 70 psia.
Claim 4
Dependent Claim
11 words
The apparatus of claim 1 wherein said noble gas is helium.
Claim 5
Dependent Claim
11 words
The apparatus of claim 1 wherein said noble gas is neon.
Claim 6
Dependent Claim
11 words
The apparatus of claim 1 wherein said noble gas is argon.
Claim 7
Dependent Claim
11 words
The apparatus of claim 1 wherein said noble gas is krypton.
Claim 8
Dependent Claim
11 words
The apparatus of claim 1 being a compressed gas insulated cable.
References Cited (Backward Citations)
US2757261A
Cited
US2867679A
Cited
US3059044A
Cited
US3249681A
Cited
US4071461A
Cited
US4110580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-20 | 1983-11-19 | 1984-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-20 | 1987-11-19 | 1988-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-20 | 1991-11-19 | 1992-05-20 | $7700.00 | Window Closed / Lapsed |