US4223241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic charge generator
Assignee: United States Department of the Navy
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Filing: 1978-08-28
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Granted: 1980-09-16
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Expires: 1998-08-28
Abstract
Abstract An electrostatic charge generator for continually providing charge carriersf a given polarity in a flow of dielectric fluid. The charge generator comprises a coaxial tube with an inner conductor wire coaxial with a hollow, cylindrical outer conductor. A D.C. potential is applied between the inner and outer conductors of the coaxial tube and a dielectric liquid, such as oil, is caused to flow therethrough. Since the intensity of the non-uniform electric field in the conductor tube is highest near the inner conductor, the electrostatic charges of the opposite polarity as the inner conductor are removed from the dielectric fluid faster than charges of the same polarity are removed at the outer conductor. This results in the dielectric fluid exiting the conductor tube carrying a charge of the remaining polarity.
Inventors
- 👤 Aleksy J. Paszyc
- 👤 Kwang T. Huang
- 👤 Dallas M. Shiroma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:14
CPC Classifications
H; H02; H02N; H02N1/00; H02N1/06; H02N1/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
213 words
An electrostatic charge generator for continuously providing charge carriers of a given polarity in a flow of dielectric liquid, comprising: a. a coaxial tube comprising: 1. an inner conductor wire; and 2. a hollow, cylindrical outer conductor coaxial with said inner conductor; b. voltage means for applying a DC potential between said inner and said outer conductor; said DC potential creating a non-uniform field the intensity of which is highest near said inner conductor; c. a circulating dielectric liquid; d. flow means for causing said dielectric liquid to continuously circulate through said coaxial tube at a rate to insure a turbulent flow; e. said dielectric liquid being depleted of charges of the opposite polarity of said inner conductor more rapidly then complementary charges are removed at the outer conductor as the dielectric liquid is caused to flow through said coaxial tube, such that the dielectric liquid exiting said coaxial tube carries charges of the complementary polarity; f. the polarity of said voltage means operable to be reversed for changing the polarity of the charges carried by said dielectric liquid and thus control the polarity of the accumulated charges; and g. said dielectric liquid comprising a two-phase mixture consisting of from 90 to 100 percent oil and from 0 to 10 percent distilled water.
Claim 2
Dependent Claim
213 words
An electrostatic charge generator for continuously providing charge carriers of a given polarity in a flow of dielectric liquid, comprising: a. a coaxial tube comprising: 1. an inner conductor wire; and 2. a hollow, cylindrical outer conductor coaxial with said inner conductor; b. voltage means for applying a DC potential between said inner and said outer conductor; said DC potential creating a non-uniform field the intensity of which is highest near said inner conductor; c. a circulating dielectric liquid; d. flow means for causing said dielectric liquid to continuously circulate through said coaxial tube at a rate to insure a turbulent flow; e. said dielectric liquid being depleted of charges of the opposite polarity of said inner conductor more rapidly then complementary charges are removed at the outer conductor as the dielectric liquid is caused to flow through said coaxial tube, such that the dielectric liquid exiting said coaxial tube carries charges of the complementary polarity; f. the polarity of said voltage means operable to be reversed for changing the polarity of the charges carried by said dielectric liquid and thus control the polarity of the accumulated charges; and g. said dielectric liquid comprising a two-phase mixture consisting of from 90 to 100 percent oil and from 0 to 10 percent distilled water.
Claim 3
Dependent Claim
22 words
The electrostatic charge generator as recited in claim 1 wherein said dielectric liquid comprises 100 percent oil and 0 percent distilled water.
Claim 4
Dependent Claim
31 words
The electrostatic charge generator as recited in claim 2 wherein said coaxial tube comprises: a. an inner conductor of uninsulated copper wire; and b. an outer, cylindrical conductor of copper tubing.
Claim 5
Dependent Claim
19 words
An electrostatic charge generator as in claim 1 wherein the oil component of said dielectric liquid is transformer oil.
Claim 6
Dependent Claim
181 words
In an electrostatic high potential system which includes an electrostatic charge generation chamber and an electrostatic charge accumulation chamber together with means for continuously circulating a dielectric liquid therethrough, an improved electrostatic charge generation chamber comprising: a. a coaxial tube comprising: 1. an inner conductor wire; 2. a hollow, cylindrical outer conductor coaxial with said inner conductor; and b. voltage means for applying a DC potential between said inner and said outer conductor; said DC potential creating a non-uniform field the intensity of which is highest near said inner conductor; c. said dielectric liquid being circulated through said coaxial tube at a rate to insure a turbulent flow and being depleted of charges of the opposite polarity of said inner conductor more rapidly than complementary charges are removed at the outer conductor such that the dielectric liquid exiting the coaxial tube carries electrostatic charges of the complementary polarity; and d. the polarity of said voltage means operable to be reversed for changing the polarity of the charges carried by said dielectric liquid and thus control the polarity of the accumulated charges.
Claim 7
Dependent Claim
181 words
In an electrostatic high potential system which includes an electrostatic charge generation chamber and an electrostatic charge accumulation chamber together with means for continuously circulating a dielectric liquid therethrough, an improved electrostatic charge generation chamber comprising: a. a coaxial tube comprising: 1. an inner conductor wire; 2. a hollow, cylindrical outer conductor coaxial with said inner conductor; and b. voltage means for applying a DC potential between said inner and said outer conductor; said DC potential creating a non-uniform field the intensity of which is highest near said inner conductor; c. said dielectric liquid being circulated through said coaxial tube at a rate to insure a turbulent flow and being depleted of charges of the opposite polarity of said inner conductor more rapidly than complementary charges are removed at the outer conductor such that the dielectric liquid exiting the coaxial tube carries electrostatic charges of the complementary polarity; and d. the polarity of said voltage means operable to be reversed for changing the polarity of the charges carried by said dielectric liquid and thus control the polarity of the accumulated charges.
Claim 8
Dependent Claim
31 words
The electrostatic charge generator as recited in claim 5 wherein said coaxial tube comprises: a. an inner conductor of uninsulated copper wire; and b. an outer, cylindrical conductor of copper tubing.
Claim 9
Dependent Claim
24 words
The electrostatic charge generator as recited in claim 6 wherein said coaxial tube is approximately three feet in length and one-half inch in diameter.
Claim 10
Dependent Claim
21 words
The electrostatic charge generator as recited in claim 6 wherein said voltage means supplies a DC voltage of approximately 40 volts.
Claim 11
Dependent Claim
32 words
An electrostatic charge generator as in claim 6 wherein said dielectric liquid comprises a two-phase mixture consisting of from 90 to 100 percent oil and from 0 to 10 percent distilled water.
Claim 12
Dependent Claim
14 words
An electrostatic charge generator as in claim 9 wherein said oil is transformer oil.
References Cited (Backward Citations)
US2004352A
Cited
US4123697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |