US4259097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering means for arc suppressing gas system
Assignee: Siemens Schweiz AG
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Filing: 1979-12-26
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Granted: 1981-03-31
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Expires: 1999-12-26
Abstract
Abstract Arc suppressing gas in a high voltage circuit breaker system is collected, filtered and compressed. The compressed gas is passed through a series of oil and desiccant filters and returned to a high pressure vessel for storage. The oil and desiccant filtering system is combined in a single, separable casing including baffles and a check valve.
Inventors
- 👤 Amrut R. Patel
- 👤 Donald M. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:26
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2411; B01D46/0002; B01D46/0005; B01D46/56; B01D46/62; B01D46/64; H; H01; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/57; Y; Y10; Y10S; Y10S55/00; Y10S55/17; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7936; Y10T137/7938; Y10T137/794; Y10T137/7976
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
208 words
In a system for pressurizing arc-quenching gas for an electrical current interrupter, a filtering assembly comprising: a tubular casing having first and second portions, said first and second portions having distal ends having inlet and outlet conduits respectively coupled thereto and open, confronting ends; a separable, rigid partition disposed transversely between said casing portions and receiving the open ends thereof in pressure-sealing relationship; flange means coupled to said confronting ends of said filter casing portions; tension means bridging said flange means for drawing said casing portions toward one another, and into pressure sealing contact with said partition; an oil filter means disposed in said first casing portion; a desiccant filter means disposed in said second casing portion; spring means disposed on either side of said partition for urging said oil filter and said desiccant filter against the distal ends of said first and second casing portions, respectively; a sleeve projecting from one side of said partition; check valve means disposed in said sleeve for maintaining a higher pressure in said second portion than in said first portion; and a second flange means slidably disposed over said sleeve and receiving said spring means for urging one of said filters against the distal end of its respective filter casing portion.
Claim 2
Dependent Claim
208 words
In a system for pressurizing arc-quenching gas for an electrical current interrupter, a filtering assembly comprising: a tubular casing having first and second portions, said first and second portions having distal ends having inlet and outlet conduits respectively coupled thereto and open, confronting ends; a separable, rigid partition disposed transversely between said casing portions and receiving the open ends thereof in pressure-sealing relationship; flange means coupled to said confronting ends of said filter casing portions; tension means bridging said flange means for drawing said casing portions toward one another, and into pressure sealing contact with said partition; an oil filter means disposed in said first casing portion; a desiccant filter means disposed in said second casing portion; spring means disposed on either side of said partition for urging said oil filter and said desiccant filter against the distal ends of said first and second casing portions, respectively; a sleeve projecting from one side of said partition; check valve means disposed in said sleeve for maintaining a higher pressure in said second portion than in said first portion; and a second flange means slidably disposed over said sleeve and receiving said spring means for urging one of said filters against the distal end of its respective filter casing portion.
Claim 3
Dependent Claim
51 words
The system as defined in claim 1, wherein said oil filter means and said desiccant filter means each comprises at least two axially aligned tubular filter elements, and baffle means disposed between two of said filter elements to cause arc quenching gas to flow through successive filter elements in different directions.
Claim 4
Dependent Claim
82 words
The system as defined in claim 1, wherein said check valve means comprises; a threaded sleeve fixedly disposed in said partition and at least partly projecting therefrom; a spring-biased check valve slidably disposed in said sleeve; an apertured, threaded nut engaging one end of the threaded sleeve and abutting said check valve means; a flange slidably disposed about the projecting end of the said sleeve; and a coil spring concentrically disposed about said flange and engaging one side of said partition means.
References Cited (Backward Citations)
US1801082A
Cited
US1737706A
Cited
US2031558A
Cited
DE521649C
Cited
DE725420C
Cited
US2698061A
Cited
AT186464B
Cited
US3397786A
Cited
US3841064A
Cited
US3900400A
Cited
US4040442A
Cited
US4052178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |