US3765154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube-type electrostatic precipitator
Assignee: GEA Group AG
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Filing: 1972-01-03
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Granted: 1973-10-16
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Expires: 1992-01-03
Abstract
Abstract A tube-type electrostatic precipitator in which the interior of a tube is provided with a film of conductive liquid to which the particles are attracted and which surrounds a corona discharge electrode. The outside of the tube is provided with fiberglassreinforced synthetic-resin bands while the interior of the tube is sandblasted or otherwise roughened to a minimum roughness of 15 microns.
Inventors
- 👤 L Hardt
- 👤 Wartenberg H Muller
- 👤 H Rauschenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/40; B03C3/45; B03C3/53; B03C3/41; B03C2201/00; B03C2201/10; Y; Y10; Y10S; Y10S55/00; Y10S55/38
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
The electrostatic precipitator defined in claim 1 wherein said housing comprises an upper portion formed with a gas inlet, an intermediate portion connected with said upper portion and enclosing said tubes, and a lower portion connected through said intermediate portion and forming a gas outlet, said electrostatic precipitator further comprising upper and lower tube-sheet members spanning said housing at opposite ends of said intermediate portion and positioning said tubes therein, support members on said housing for said lower tube-sheet member, and traverse members respectively spanning said upper and said lower portion and anchoring opposite ends of said corona-discharge electrodes.
Claim 2
Dependent Claim
19 words
The electrostatic precipitator defined in claim 2 wherein at least one of said members is composed of synthetic-resin-coated metal.
Claim 3
Dependent Claim
43 words
The electrostatic precipitator defined in claim 2 wherein said lower tube-sheet member is provided with a downwardly divergent upper surface and is formed with an array of tube stubs traversing said lower tube-sheet member and respectively coaxially received with clearance within said tubes.
Claim 4
Dependent Claim
52 words
The electrostatic precipitator defined in claim 4 wherein each of said stubs is provided with at least three angularly equispaced axially extending ribs for centering each of said tubes on the respective stubs, said stubs having inner diameters at least 5 mm greater than the outer diameters of the respective tube stubs.
Claim 5
Dependent Claim
22 words
The electrostatic precipitator defined in claim 4, further comprising weight-operated sealing means suspending each of said tubes on said upper tube-sheet member.
Claim 6
Dependent Claim
32 words
The electrostatic precipitator defined in claim 4, further comprising a respective synthetic-resin textile band connecting the interior surface of each of said tubes to the upper surface of said lower tube-sheet member.
Claim 7
Dependent Claim
36 words
The electrostatic precipitator defined in claim 4 wherein each of said corona-discharge electrodes has at least an outer surface composed of a corrosion-resistant metal selected from the group which consists of lead, titanium, tantalum and tungsten.
Claim 8
Dependent Claim
26 words
The electrostatic precipitator defined in claim 4 wherein said corona-discharge electrodes are provided with corona-augmenting projections in angularly and axially spaced relationship along the corona-discharge electrodes.
Claim 9
Dependent Claim
37 words
The electrostatic precipitator defined in claim 4 wherein said sleeves are composed of polyvinyl chloride, said bands are composed of fiberglass, reinforced polyester and said bands are applied to said sleeves without air bubbles or voids therebetween.
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |