US3271932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic precipitator
Assignee: General Electric Co
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Filing: 1965-07-21
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Granted: 1966-09-13
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Expires: 1985-07-21
Abstract
No abstract record available.
Inventors
- 👤 Robert W Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:27
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/14; B03C3/155; B03C3/34; B03C3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
285 words
AN ELECTROSTATIC PRECIPITATOR COMPRISING A CASING HAVING A GAS INLET AND OUTLET, A REMOVABLE FILTER UNIT WITHIN THE CASING COMPRISING AN APERTURED PLATE AT GROUND POTENTIAL POSITIONED ADJACENT THE GAS INLET, A HIGH VOLTAGE CHARGING GRID MEMBER SUPPORTED IN THE CASING ADJACENT THE APERTURED PLATE AND INSULATED FROM THE OTHER MEMBERS, AND A DOWNSTREAM GRID AT GROUND POTENTIAL ARRANGED BETWEEN THE HIGH VOLTAGE CHARGING GRID MEMBER AND THE GAS OUTLET, AND FASTENING MEANS FOR HOLDING THE APERTURED PLATE, THE HIGH VOLTAGE CHARGING GRID MEMBER AND THE DOWNSTREAM GRID TOGETHER, THE INNERMOST SURFACE OF THE APERTURED PLATE INCLUDING A PLURALITY OF PARALLEL VANES SPACED BETWEEN THE APERTURES, THE HIGH VOLTAGE CHARGING GIRD MEMBER FORMED BY A PLURALITY OF PARALLEL ELECTRODES ARRANGED GENERALLY IN PARALLEL WITH THE VANES OF THE APERTURED PLATE BUT INTERMEDIATE THEREOF, SAID ELECTRODES HAVING A LEADING EDGE WITH A PLURALITY OF SPIKES HAVING TIPS THAT ARE ADAPTED TO BE CENTERED WITHIN THE APERTURES OF THE SAID PLATE, THE DOWNSTREAM GRID BEING FORMED WITH A PLURALITY OF PARALLEL VANES GENERALLY IN LINE WITH THE VANES OF THE APERTURED PLATE, ONE SHEET OF POROUS DIELECTRIC FILTERING MEDIA SANDWICHED BETWEEN THE VANES OF THE APERTURED PLATE AND THE ELECTRODES OF THE HIGH VOLTAGE CHARGING GIRD MEMBER, AND A SECOND SHEET OF SIMILAR FILTERING MEDIA SANDWICHED BETWEEN THE ELECTRODES OF THE HIGH VOLTAGE CHARGING GRID MEMBER AND THE DOWNSTREAM GRID, WHEREBY A SUBSTANTIALLY UNIFORM IONIZED FIELD IS PRODUCED BY AN ELECTROSTATIC FIELD FROM EACH OF THE TIPS OF THE SPIKES OF THE SAID ELECTRODES THE EDGES OF THE NEAREST APERTURE OF THE SAID PLATE SO AS TO IMPRESS AN ELECTROSTATIC CHARGE ON ANY DUST PARTICLES ENTRAINED IN THE GAS THAT IS CAUSED TO FLOW THROUGH THE PRECIPITATOR.
Claim 2
Dependent Claim
285 words
AN ELECTROSTATIC PRECIPITATOR COMPRISING A CASING HAVING A GAS INLET AND OUTLET, A REMOVABLE FILTER UNIT WITHIN THE CASING COMPRISING AN APERTURED PLATE AT GROUND POTENTIAL POSITIONED ADJACENT THE GAS INLET, A HIGH VOLTAGE CHARGING GRID MEMBER SUPPORTED IN THE CASING ADJACENT THE APERTURED PLATE AND INSULATED FROM THE OTHER MEMBERS, AND A DOWNSTREAM GRID AT GROUND POTENTIAL ARRANGED BETWEEN THE HIGH VOLTAGE CHARGING GRID MEMBER AND THE GAS OUTLET, AND FASTENING MEANS FOR HOLDING THE APERTURED PLATE, THE HIGH VOLTAGE CHARGING GRID MEMBER AND THE DOWNSTREAM GRID TOGETHER, THE INNERMOST SURFACE OF THE APERTURED PLATE INCLUDING A PLURALITY OF PARALLEL VANES SPACED BETWEEN THE APERTURES, THE HIGH VOLTAGE CHARGING GIRD MEMBER FORMED BY A PLURALITY OF PARALLEL ELECTRODES ARRANGED GENERALLY IN PARALLEL WITH THE VANES OF THE APERTURED PLATE BUT INTERMEDIATE THEREOF, SAID ELECTRODES HAVING A LEADING EDGE WITH A PLURALITY OF SPIKES HAVING TIPS THAT ARE ADAPTED TO BE CENTERED WITHIN THE APERTURES OF THE SAID PLATE, THE DOWNSTREAM GRID BEING FORMED WITH A PLURALITY OF PARALLEL VANES GENERALLY IN LINE WITH THE VANES OF THE APERTURED PLATE, ONE SHEET OF POROUS DIELECTRIC FILTERING MEDIA SANDWICHED BETWEEN THE VANES OF THE APERTURED PLATE AND THE ELECTRODES OF THE HIGH VOLTAGE CHARGING GIRD MEMBER, AND A SECOND SHEET OF SIMILAR FILTERING MEDIA SANDWICHED BETWEEN THE ELECTRODES OF THE HIGH VOLTAGE CHARGING GRID MEMBER AND THE DOWNSTREAM GRID, WHEREBY A SUBSTANTIALLY UNIFORM IONIZED FIELD IS PRODUCED BY AN ELECTROSTATIC FIELD FROM EACH OF THE TIPS OF THE SPIKES OF THE SAID ELECTRODES THE EDGES OF THE NEAREST APERTURE OF THE SAID PLATE SO AS TO IMPRESS AN ELECTROSTATIC CHARGE ON ANY DUST PARTICLES ENTRAINED IN THE GAS THAT IS CAUSED TO FLOW THROUGH THE PRECIPITATOR.
References Cited (Backward Citations)
US2297601A
Cited
US2579445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |