Patent US4893048A successfully refreshed from Google Patents.
Patent US3966436A successfully refreshed from Google Patents.
US3966436A
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Discharge electrode
Assignee: Wahlco Inc
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Filing: 1974-07-08
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Granted: 1976-06-29
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Expires: 1994-07-08
Abstract
Abstract A gas cleansing apparatus and more particularly an electrostatic precipitating apparatus having improved discharge electrode means therein.
Inventors
- 👤 William E. Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:48
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/86; B03C3/40; B03C3/41
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
An electrode assembly adapted to be supported within an electrostatic precipitator comprising: an elongated, substantially straight, electrically conductive electrode member; a generally helical electrically conductive electrode member having end portions; a major portion of said straight member being radially spaced from and encompassed by said helical member; securing means electrically connecting and mechanically securing said end portions of said helical member to said straight member; and weight means connected to said straight member for holding said straight member in tension; wherein only the major extent of said helical member between said end portions is free to move into and out of engagement with said straight member during normal operation in an electrostatic precipitator.
Claim 2
Dependent Claim
113 words
An electrode assembly adapted to be supported within an electrostatic precipitator comprising: an elongated, substantially straight, electrically conductive electrode member; a generally helical electrically conductive electrode member having end portions; a major portion of said straight member being radially spaced from and encompassed by said helical member; securing means electrically connecting and mechanically securing said end portions of said helical member to said straight member; and weight means connected to said straight member for holding said straight member in tension; wherein only the major extent of said helical member between said end portions is free to move into and out of engagement with said straight member during normal operation in an electrostatic precipitator.
Claim 3
Dependent Claim
17 words
An electrode assembly as specified in claim 1 wherein the longitudinal axes of said members are coincident.
Claim 4
Dependent Claim
18 words
An electrode assembly as specified in claim 1 wherein said helical member has convolutions of substantially constant pitch.
Claim 5
Dependent Claim
23 words
An electrode assembly as specified in claim 3 wherein said convolutions have a pitch in the range of from 4 to 12 inches.
References Cited (Backward Citations)
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Cited
US1357201A
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US2244278A
Cited
GB706152A
Cited
US2881857A
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US3485011A
Cited
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Cited
US3686829A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |