Patent US3699387A successfully refreshed from Google Patents.
US3699387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionic wind machine
Assignee: Individual
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Filing: 1970-06-25
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Granted: 1972-10-17
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Expires: 1990-06-25
Abstract
Abstract Disclosed is a wind generating machine with no moving parts. A thin corona wire is located adjacent a wire mesh and a potential gradient of from 7,000 to 20,000 volts causes air to flow in a direction from the wire toward the mesh. The air flow is voltage sensitive. Several stages may be provided and the mesh may form part of a continuous belt. A rigid self-contained assembly is provided by physically connecting the wire and mesh.
Inventors
- 👤 Harrison F Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:39
CPC Classifications
H; H01; H01T; H01T14/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
A wind machine comprising an air duct, an electrically conductive mesh extending across said duct and forming a reference potential plane transverse to the longitudinal axis of said duct, a corona wire spaced from said mesh and lying wholly in a second plane transverse to said longitudinal axis, said corona wire extending over an area in said duct substantially coextensive with the area of said mesh in said duct, means external of said duct for establishing electrical connection to said corona wire and said mesh, said mesh being formed by a continuous belt of flexible screen material, a portion of said belt extending externally of said duct, and means external of said duct for cleaning said belt.
Claim 2
Dependent Claim
117 words
A wind machine comprising an air duct, an electrically conductive mesh extending across said duct and forming a reference potential plane transverse to the longitudinal axis of said duct, a corona wire spaced from said mesh and lying wholly in a second plane transverse to said longitudinal axis, said corona wire extending over an area in said duct substantially coextensive with the area of said mesh in said duct, means external of said duct for establishing electrical connection to said corona wire and said mesh, said mesh being formed by a continuous belt of flexible screen material, a portion of said belt extending externally of said duct, and means external of said duct for cleaning said belt.
Claim 3
Dependent Claim
17 words
A wind machine according to claim 1 wherein said cleaning means comprises a brush engaging said belt.
Claim 4
Dependent Claim
23 words
A wind machine according to claim 1 wherein said belt is mounted on rollers whereby it may be continuously moved through said duct.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |