US3794839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corona generating apparatus
Assignee: Xerox Corp
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Filing: 1973-01-11
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Granted: 1974-02-26
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Expires: 1993-01-11
Abstract
Abstract A corona generating apparatus in which the shield thereof includes a control portion arranged to regulate the corona discharge from the discharge electrode. The shield directs fluidflow over the control portion for effecting the removal of particles therefrom. The foregoing abstract is neither intended to define the invention disclosed in the specification, nor is it intended to be limiting as to the scope of the invention in any way.
Inventors
- 👤 T Hayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:43
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/02; G03G15/0258
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
A corona generating apparatus, including: an elongated shield defining an open ended chamber, said shield comprising a substantially non-conductive inner member, and a substantially conductive outer member secured thereto and having a control portion extending inwardly therefrom over the side marginal regions of the open end of the chamber, the inner member of said shield being secured to the outer member thereof in an opposed, spaced relationship Defining a conduit therebetween for directing fluid-flow substantially over the control portion of the outer member to effect the removal of particles therefrom; and a corona discharge electrode mounted in the chamber of said shield and arranged therein so that the control portion of said shield regulates the corona discharge from said discharge electrode.
Claim 2
Dependent Claim
121 words
A corona generating apparatus, including: an elongated shield defining an open ended chamber, said shield comprising a substantially non-conductive inner member, and a substantially conductive outer member secured thereto and having a control portion extending inwardly therefrom over the side marginal regions of the open end of the chamber, the inner member of said shield being secured to the outer member thereof in an opposed, spaced relationship Defining a conduit therebetween for directing fluid-flow substantially over the control portion of the outer member to effect the removal of particles therefrom; and a corona discharge electrode mounted in the chamber of said shield and arranged therein so that the control portion of said shield regulates the corona discharge from said discharge electrode.
Claim 3
Dependent Claim
19 words
An apparatus as recited in claim 1, further including means for generating a corona discharge from said discharge electrode.
Claim 4
Dependent Claim
27 words
An apparatus as recited in claim 2, further including means for applying a field regulating potential to the control portion of the outer member of said shield.
Claim 5
Dependent Claim
30 words
An apparatus as recited in claim 1, further including means for producing fluid flow through the conduit defined by the inner member of said shield and the outer member thereof.
Claim 6
Dependent Claim
19 words
An apparatus as recited in claim 4, wherein the outer member of said shield includes a substantially U-shaped member.
Claim 7
Dependent Claim
87 words
An apparatus as recited in claim 5, wherein the control portion of the outer member of said shield includes a pair of inwardly bent lips adapted to regulate the corona discharge from said discharge electrode, one of said lips extending inwardly over one side marginal region of the open ended chamber from one side wall of said U-shaped member, and the other of said lips extending inwardly over the other side marginal region of the open ended chamber from the other side wall of said U-shaped member.
Claim 8
Dependent Claim
36 words
An apparatus as recited in claim 6, wherein said discharge electrode includes an elongated conductive wire mounted in the chamber of said shield and extending substantially in a longitudinal direction along the length of said shield.
Claim 9
Dependent Claim
19 words
An apparatus as recited in claim 7, wherein the inner member of said shield includes a substantially U-shaped member.
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |