Patent US3595983A successfully refreshed from Google Patents.
US3595983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for passing a tension supply line through the cover of an electric filter
Assignee: Knapsack AG
•
Filing: 1969-10-06
•
Granted: 1971-07-27
•
Expires: 1989-10-06
Abstract
Abstract Lead-in device for passing a tension supply line or conductor through the cover of an electric filter down to its spray system, the tension supply line or conductor being concentrically surrounded by a duct arranged to run from the filter cover to the interior of the filter. The tension supply line or conductor is arranged to be surrounded by an insulator by positioning the said insulator above the filter cover so as to be spaced therefrom and so as to be radially spaced from the tension supply line or conductor, and an insulating bush is secured to the tension supply line or conductor at a position below the insulator. The insulating bush is arranged to be surrounded by a barrier disc so as to leave a barrier slit, and the space left above the barrier disc is occupied by a sealing gas maintained under overpressure with respect to the pressure prevailing inside the filter.
Inventors
- 👤 Fritz Muller
- 👤 Friedrich-Wilhelm Kampmann
- 👤 Hermann Niermann
- 👤 Hugo Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:18
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/66; B03C3/70
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
130 words
A lead-in device passing a conductor through the cover of an electric filter down to its spray system, the conductor being concentrically surrounded by a duct running from the filter cover to the interior of the filter, the conductor being surrounded by an insulator, the insulator being positioned above the filter cover and being radially spaced from the conductor, an insulating bush being secured to the conductor, and the insulating bush being surrounded by a barrier disc so as to leave a barrier slit between them, a bellows disposed above the insulator and contacting the conductor, a space being formed by the barrier disc, the insulator and the bellows and said space being occupied by a sealing gas maintained at a relatively higher pressure than that prevailing inside the filter.
Claim 2
Dependent Claim
130 words
A lead-in device passing a conductor through the cover of an electric filter down to its spray system, the conductor being concentrically surrounded by a duct running from the filter cover to the interior of the filter, the conductor being surrounded by an insulator, the insulator being positioned above the filter cover and being radially spaced from the conductor, an insulating bush being secured to the conductor, and the insulating bush being surrounded by a barrier disc so as to leave a barrier slit between them, a bellows disposed above the insulator and contacting the conductor, a space being formed by the barrier disc, the insulator and the bellows and said space being occupied by a sealing gas maintained at a relatively higher pressure than that prevailing inside the filter.
Claim 3
Dependent Claim
28 words
The device as claimed in claim 1, wherein the insulator has a cylindrical shape, and wherein the insulating bush is positioned near the lower end of the insulator.
Claim 4
Dependent Claim
40 words
The device as claimed in claim 1, wherein the insulator comprises an insulating disc, and an electrically conducting casing, the insulating disc being secured to the electrically conducting casing, and wherein the insulating bush is positioned below the insulating disc.
Claim 5
Dependent Claim
21 words
The device as claimed in claim 1, wherein sealing gas is an inert gas having a temperature substantially of 60* C.
Claim 6
Dependent Claim
38 words
The device as claimed in claim 1, wherein the insulator, the insulating bush and the barrier disc are made up of polytetrafluoroethylene the barrier disc being an annular ring with a wedge-shaped segment to facilitate assembly and disassembly.
Claim 7
Dependent Claim
36 words
The device as claimed in claim 1, wherein a metal bellows is used as an axial compensator, of which the lower end is fast with the insulator and the upper end is fast with the conductor.
Claim 8
Dependent Claim
27 words
The device as claimed in claim 1, wherein a dashpot is arranged concentrically with respect to the conductor and between the lead-in device and the filter cover.
Claim 9
Dependent Claim
17 words
The device as claimed in claim 7, wherein the lower portion of the dashpot has water therein.
Claim 10
Dependent Claim
34 words
The device as claimed in claim 8, wherein the water in the dashpot is covered with an oil film floating thereon and the inert gas is heated to a temperature of substantially 60* C.
Claim 11
Dependent Claim
22 words
The device as claimed in claim 7, wherein a conduit coming from a chimney projects into the upper portion of the dashpot.
Claim 12
Dependent Claim
20 words
The device as claimed in claim 1, wherein the filter cover has a tube connection projecting into a diving vessel.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |