Patent US3896347A successfully refreshed from Google Patents.
US3896347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corona wind generating device
Assignee: Envirotech Corp
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Filing: 1974-05-30
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Granted: 1975-07-22
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Expires: 1994-05-30
Abstract
Abstract A device, which generates a corona wind that circulates about the support rods for the emitter wires in an electrostatic precipitator to discourage accumulation of oil and dust particles on the insulators from which the support rods are suspended, includes a ground shell which spacedly surrounds the support rods and a plurality of pointed coronaemitting members that are mounted to the support rod within the shell and that are spatially arranged to cause the circulating gaseous flow within the shell which carries entrained particulates to collection on the interior walls of the shell.
Inventors
- 👤 Peter Charles Gelfand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:47
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/66; B03C3/70; B03C2201/00; B03C2201/14
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
187 words
A device for generating a corona wind comprising: a. an electrically conductive rod-like member adapted for connection to a high-voltage source; b. an electrically conductive shell mounted to spacedly surround said rod-like member and having a first open mouth at one end thereof through which said rod-like member passes, said first mouth being relatively large compared to the diameter of said rod-like member; c. a plurality of thin plate-like members, each fastened on edGe in a circumferential series around said rod-like member to extend outwardly therefrom toward said shell; portions of the outer peripheral edges of said plate-like members having a plurality of corona-emitting points formed thereon, said points being generally directed outwardly and toward said first mouth; d. the surrounding wall of said shell being spaced radially apart from the peripheral edges of said plate-like members, said shell being adapted for connection to an electrical ground so that electrical discharge from said points is directed toward said shell to cause a gaseous flow within said shell in the space between said shell and said rod-like member when said rod-like member is charged to a high voltage.
Claim 2
Independent Claim
187 words
A device for generating a corona wind comprising: a. an electrically conductive rod-like member adapted for connection to a high-voltage source; b. an electrically conductive shell mounted to spacedly surround said rod-like member and having a first open mouth at one end thereof through which said rod-like member passes, said first mouth being relatively large compared to the diameter of said rod-like member; c. a plurality of thin plate-like members, each fastened on edGe in a circumferential series around said rod-like member to extend outwardly therefrom toward said shell; portions of the outer peripheral edges of said plate-like members having a plurality of corona-emitting points formed thereon, said points being generally directed outwardly and toward said first mouth; d. the surrounding wall of said shell being spaced radially apart from the peripheral edges of said plate-like members, said shell being adapted for connection to an electrical ground so that electrical discharge from said points is directed toward said shell to cause a gaseous flow within said shell in the space between said shell and said rod-like member when said rod-like member is charged to a high voltage.
Claim 3
Dependent Claim
47 words
A device according to claim 1 wherein said shell has a wide midsection and narrowed ends, said midsection being formed such that the radial distances from the various points on the periphery of any one of said plates to the wall of said shell are generally constant.
Claim 4
Dependent Claim
79 words
A device according to claim 1 wherein said plate-like members each have a nearly semi-circular configuration; wherein said shell has a wide midsection and narrowed ends, said midsection being formed such that the radial distances from the various points on the periphery of any one of said plates to the wall of said shell are generally constant; and wherein said corona emitting points are arranged on the peripheral edges of said plate-like members which generally face said open mouth.
Claim 5
Dependent Claim
24 words
A device according to claim 1 wherein both ends of said shell are open and said rod-like member is disposed to pass spacedly therethrough.
Claim 6
Dependent Claim
57 words
A device according to claim 1 wherein said points are spatially distributed so that the gaseous flow circulates in a vortex within said shell, said gaseous flow passing along said rod-like member between said plate-like members toward said first mouth and thence, changes direction, and passes along the walls of said shell away from said first mouth.
Claim 7
Independent Claim
157 words
A device for generating a corona wind comprising: a. an electrically conductive rod-like member adapted for connection to a high-voltage source; b. an electrically conductive shell mounted to spacedly surround said rod-like member and having a first open mouth at one end thereof through which said rod-like member passes, said first mouth being relatively large compared to the diameter of said rod-like member; c. a plurality of corona-emitting pointed members fastened circumferentially around said rod-like member to extend outwardly therefrom toward said shell and generally toward said first mouth; d. the surrounding wall of said shell being spaced radially apart from the ends of said pointed members said shell being adapted for connection to an electrical ground so that electrical discharge from said points is directed toward said shell to cause a gaseous flow within said shell in the space between said shell and said rod-like member when said rod-like member is charged to a high voltage.
Claim 8
Independent Claim
157 words
A device for generating a corona wind comprising: a. an electrically conductive rod-like member adapted for connection to a high-voltage source; b. an electrically conductive shell mounted to spacedly surround said rod-like member and having a first open mouth at one end thereof through which said rod-like member passes, said first mouth being relatively large compared to the diameter of said rod-like member; c. a plurality of corona-emitting pointed members fastened circumferentially around said rod-like member to extend outwardly therefrom toward said shell and generally toward said first mouth; d. the surrounding wall of said shell being spaced radially apart from the ends of said pointed members said shell being adapted for connection to an electrical ground so that electrical discharge from said points is directed toward said shell to cause a gaseous flow within said shell in the space between said shell and said rod-like member when said rod-like member is charged to a high voltage.
Claim 9
Dependent Claim
39 words
A device according to claim 6 wherein said shell has a wide midsection and narrowed ends, said midsection being formed such that the radial distances from the various said points on the wall of said shell are generally constant.
Claim 10
Dependent Claim
24 words
A device according to claim 6 wherein both ends of said shell are open and said rod-like member is disposed to pass spacedly therethrough.
Claim 11
Dependent Claim
57 words
A device according to claim 6 wherein said points are spatially distributed so that the gaseous flow circulates in a vortex within said shell, said gaseous flow passing along said rod-like member between said pointed members toward said first mouth and thence, changes direction, and passes along the walls of said shell away from said first mouth.
Claim 12
Dependent Claim
225 words
In an electrostatic precipitator having a housing through which gases pass for cleaning, a plurality of grounded collecting plates fixedly mounted in said housing and a plurality of high-voltage emitter wires suspended from conducting rods which extend below the roof of said housing, the upper ends of said rods being supported from insulators fixed to the roof inside said housing, a device for discouraging the settlement of foreign material on said insulators comprising: a. electrically conductive shells which are mounted to surround said rod-like members and having an opening at the lower ends thereof through which said rod-like members pass; b. a plurality of thin plate-like members, each fastened on edge in a circumferential series around each of said rod-like members to extend outwardly therefrom toward said shells; portions of the outer peripheral edges of said plate-like members having a plurality of corona-emitting points formed thereon, said points being generally directed outwardly and toward said shell opening; c. the surrounding walls of said shells being spaced radially apart from the curved edges of said plates; said shells being adapted for connection to an electrical ground so that electrical discharge from said points is directed toward said shells to cause a gaseous flow within said shells in the spaces between said shell and said rod-like member when said rod-like member is charged to a high voltage.
Claim 13
Dependent Claim
225 words
In an electrostatic precipitator having a housing through which gases pass for cleaning, a plurality of grounded collecting plates fixedly mounted in said housing and a plurality of high-voltage emitter wires suspended from conducting rods which extend below the roof of said housing, the upper ends of said rods being supported from insulators fixed to the roof inside said housing, a device for discouraging the settlement of foreign material on said insulators comprising: a. electrically conductive shells which are mounted to surround said rod-like members and having an opening at the lower ends thereof through which said rod-like members pass; b. a plurality of thin plate-like members, each fastened on edge in a circumferential series around each of said rod-like members to extend outwardly therefrom toward said shells; portions of the outer peripheral edges of said plate-like members having a plurality of corona-emitting points formed thereon, said points being generally directed outwardly and toward said shell opening; c. the surrounding walls of said shells being spaced radially apart from the curved edges of said plates; said shells being adapted for connection to an electrical ground so that electrical discharge from said points is directed toward said shells to cause a gaseous flow within said shells in the spaces between said shell and said rod-like member when said rod-like member is charged to a high voltage.
Claim 14
Dependent Claim
46 words
A device according to claim 1 wherein said shells have wide midsections and narrowed ends, said midsections being formed such that the radial distances from the various points on the periphery of any one of said plates to the walls of said shells are generally constant.
Claim 15
Dependent Claim
24 words
A device according to claim 10 wherein both ends of said shell are open and said rod-like member is disposed to pass spacedly therethrough.
Claim 16
Dependent Claim
57 words
A device according to claim 10 wherein said points are spatially distributed so that the gaseous flow circulates in a vortex within said shell, said gaseous flow passing along said rod-like member between said plate-like members toward said first mouth and thence, changes direction, and passes along the walls of said shell away from said first mouth.
References Cited (Backward Citations)
US1491274A
Cited
US1888606A
Cited
US2526715A
Cited
US2720551A
Cited
US2708980A
Cited
US3495379A
Cited
US3518488A
Cited
US3714762A
Cited
US3785117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |