US3819985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge electrodes for electrostatic precipitators and method of shipment and installation
Assignee: Individual
•
Filing: 1972-12-01
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Granted: 1974-06-25
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Expires: 1992-12-01
Abstract
Abstract An electrostatic precipitator discharge electrode having an outer conductive sheath with a generally axially extending inner core therein and an insulator therebetween. To increase the electrode corona current emission the outer sheath has a plurality of conductive integral ribs terminating in apices extending generally radially outwardly of the sheath. The electrodes can be coiled and shipped to the job site where they are straightened and cut to the proper length for installation in a precipitator.
Inventors
- 👤 R Dusevoir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:31
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/40; B03C3/41; B03C2201/00; B03C2201/10
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
124 words
An electrostatic precipitator discharge electrode comprising an outer tubular sheath of an electrically conductive material providing a corona discharge emission when connected tO a high potential electric source, an inner core extending generally axially through the outer sheath and having sufficient tensile strength to carry the weight of the electrode, and an insulator of a dielectric material interposed between said outer tubular sheath and said inner core retaining said outer tubular sheath and said inner core in generally fixed relation to each other such that the electrode, when in use, will not be completely severed if said outer sheath is completely severed, whereby the likelihood of the electrode in use becoming completely severed and shorting out other electrodes in a precipitator is substantially decreased.
Claim 2
Dependent Claim
124 words
An electrostatic precipitator discharge electrode comprising an outer tubular sheath of an electrically conductive material providing a corona discharge emission when connected tO a high potential electric source, an inner core extending generally axially through the outer sheath and having sufficient tensile strength to carry the weight of the electrode, and an insulator of a dielectric material interposed between said outer tubular sheath and said inner core retaining said outer tubular sheath and said inner core in generally fixed relation to each other such that the electrode, when in use, will not be completely severed if said outer sheath is completely severed, whereby the likelihood of the electrode in use becoming completely severed and shorting out other electrodes in a precipitator is substantially decreased.
Claim 3
Dependent Claim
28 words
The electrode of claim 1 wherein said insulator extends generally longitudinally substantially the entire length of the overlapped portion of said outer tubular sheath and said inner core.
Claim 4
Dependent Claim
23 words
The electrode of claim 2 wherein said inner core adjacent one end of said electrode is adapted to have a weight suspended therefrom.
Claim 5
Dependent Claim
31 words
The electrode of claim 2 wherein said outer tubular sheath has at least two homogeneously integral electrically conductive ribs thereon terminating in apices extending generally radially outwardly of said tubular sheath.
Claim 6
Dependent Claim
24 words
The electrode of claim 2 wherein said inner core comprises an electrically conductive metallic material electrically insulated by said insulator of a dielectric material.
Claim 7
Dependent Claim
44 words
The electrode of claim 1 wherein said insulator extends generally longitudinally substantially the entire length of the overlapped portion of said outer tubular sheath and said inner core and engages with said outer tubular sheath and said inner core substantially throughout said overlapped portion.
Claim 8
Dependent Claim
31 words
The electrode of claim 6 wherein said outer tubular sheath has at least two homogeneously integral electrically conductive ribs thereon terminating in apices extending generally radially outwardly of said tubular sheath.
Claim 9
Dependent Claim
24 words
The electrode of claim 7 wherein said inner core comprises an electrically conductive metallic material electrically insulated by said insulator of a dielectric material.
Claim 10
Dependent Claim
48 words
The electrode of claim 6 wherein said outer tubular sheath has not less than four nor more than six generally longitudinally extending ribs thereon with each of said ribs terminating in a generally radially outwardly projecting apex, and extending substantially the entire longitude of said outer tubular sheath.
Claim 11
Dependent Claim
19 words
The electrode of claim 9 wherein said electrically conductive material of said outer tubular sheath comprises aluminum or steel.
Claim 12
Dependent Claim
16 words
The electrode of claim 9 wherein said ribs are homogeneously integral with said outer tubular sheath.
Claim 13
Dependent Claim
13 words
The electrode of claim 11 wherein said inner core comprises a steel wire.
Claim 14
Dependent Claim
31 words
The electrode of claim 1 wherein said outer tubular sheath has at least two homogeneously integral electrically conductive ribs thereon terminating in apices extending generally radially outwardly of said tubular sheath.
Claim 15
Dependent Claim
19 words
The electrode of claim 13 wherein said ribs extend throughout substantially the entire longitude of said outer tubular sheath.
Claim 16
Dependent Claim
18 words
The electrode of claim 14 wherein said ribs extend in generally straight lines on said outer tubular sheath.
Claim 17
Dependent Claim
21 words
The electrode of claim 13 wherein said outer tubular sheath has a homogeneously integral hook adjacent at least one end thereof.
Claim 18
Dependent Claim
29 words
The electrode of claim 12 wherein said inner core extends beyond the other end of said outer tubular sheath for suspending a weight from one end of the electrode.
Claim 19
Dependent Claim
19 words
The electrode of claim 5 wherein said electrically conductive material of said outer tubular sheath comprises steel or aluminum.
Claim 20
Dependent Claim
24 words
The electrode of claim 13 wherein said inner core comprises an electrically conductive metallic material electrically insulated by said insulator of a dielectric material.
Claim 21
Dependent Claim
48 words
The electrode of claim 13 wherein said electrically conductive ribs are coiled on said outer tubular sheath and extend generally longitudinally thereon such that the effective linear length of said ribs exceeds the axial length of the portion of the tubular sheath on which said ribs are coiled.
Claim 22
Dependent Claim
19 words
The electrode of claim 20 wherein said electrically conductive material of said outer tubular sheath comprises aluminum or steel.
Claim 23
Dependent Claim
29 words
The electrode of claim 1 wherein said inner core extends beyond said outer tubular sheath adjacent one end thereof for suspending a weight from one end of the electrode.
Claim 24
Dependent Claim
38 words
The electrode of claim 1 wherein the discharge electrode is capable of being coiled such that said outer tubular sheath is plastically deformed with none of the components of the coiled portion of the discharge electrode being fractured.
Claim 25
Dependent Claim
25 words
The electrode of claim 19 wherein said discharge electrode is capable of being coiled to coil has a diameter not substantially greater than six feet.
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |