US3914766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsating plasma device
Assignee: Individual
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Filing: 1973-10-16
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Granted: 1975-10-21
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Expires: 1993-10-16
Abstract
Abstract A pulsating plasma device is disclosed having a cylindrical plasma column and a pair of field exciter members disposed in spaced parallel relationship to the plasma column. Means are also provided for creating an electrostatic field through which oscillating energy is transferred between the plasma column and the field exciter members.
Inventors
- 👤 Richard L Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:58
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/44; H01Q23/00; H05; H05H; H05H1/00; H05H1/02; Y; Y02; Y02E; Y02E30/00; Y02E30/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
225 words
A pulsating plasma device comprising: means providing a cylindrical plasma column; at least one field exciter member having substantial length and being supported in spaced parallel relationship to the longitudinal axis of said plasma column and electrically insulated therefrom, said field exciter member having a substantial surface width in a direction generally transverse to the longitudinal axis of the plasma column, the inner surface of said field exciter member facing toward said plasma column being curved in a plane perpendicular to the longitudinal axis of said column; the curved characteristic of the inner surface of said at least one field exciter member being also constant througout a substantial length of the field exciter member, the curvature and physical positioning thereof being so selected that the near force field developed thereby is at least approximately proportional to the sine of m times the angle theta ; here m is an integer which is zero for one field exciter member and the near force field is magnetic, one for two fiEld exciter members, and two for four field exciter members, and where theta is the angle in cylindrical coordinates in the plane perpendicular to said longtudinal axis; and electric circuit means coupled to at least said one field exciter member and having an operating frequency related to the physical plasma characteristics in accordance with the following table:
Claim 2
Dependent Claim
225 words
A pulsating plasma device comprising: means providing a cylindrical plasma column; at least one field exciter member having substantial length and being supported in spaced parallel relationship to the longitudinal axis of said plasma column and electrically insulated therefrom, said field exciter member having a substantial surface width in a direction generally transverse to the longitudinal axis of the plasma column, the inner surface of said field exciter member facing toward said plasma column being curved in a plane perpendicular to the longitudinal axis of said column; the curved characteristic of the inner surface of said at least one field exciter member being also constant througout a substantial length of the field exciter member, the curvature and physical positioning thereof being so selected that the near force field developed thereby is at least approximately proportional to the sine of m times the angle theta ; here m is an integer which is zero for one field exciter member and the near force field is magnetic, one for two fiEld exciter members, and two for four field exciter members, and where theta is the angle in cylindrical coordinates in the plane perpendicular to said longtudinal axis; and electric circuit means coupled to at least said one field exciter member and having an operating frequency related to the physical plasma characteristics in accordance with the following table:
Claim 3
Dependent Claim
47 words
A pulsating plasma device as claimed in claim 1 wherein: there are two of said field exciter members, the inner surfaces of said field exciter members are convexly curved, said electrical circuit means is a microwave circuit, and said oscillating energy is transferred through an electrostatic field.
Claim 4
Dependent Claim
41 words
A pulsating plasma device as claimed in claim 2 wherein said microwave circuit means includes a wave-guide having a rectangular cross-section, and said two exciter members are physically attached to opposite side walls of said wave-guide in electrically conductive relationship thereto.
Claim 5
Dependent Claim
35 words
A pulsating plasma device as claimed in claim 2 which further includes means for cooling said plasma column so as to maintain a substantially uniform temperature of the plasma throughout the length of said column.
Claim 6
Dependent Claim
41 words
A pulsating plasma device as defined in claim 1 wherein: there is only one of said field exciter members, the inner surface of said field exciter member having a substantially cylindrical configuration, and said operating frequency defined by the following table:
Claim 7
Dependent Claim
16 words
A pulsating plasma device as claimed in claim 5 wherein the value of Ai is 0.
Claim 8
Dependent Claim
37 words
A pulsating plasma device as claimed in claim 5 wherein C is the ion acoustic wave phase velocity, and is defined by the equation C2 (Ci)2 ( gamma ekTe + gamma ikTi + 2 omega Nu eme)/mi.
Claim 9
Dependent Claim
33 words
A pulsating plasma device as claimed in claim 5 wherein C is the electron acoustic wave phase velocity, and is defined by the equation C2 (Ce)2 gamma ekTe/me + 2 omega Nu e.
Claim 10
Dependent Claim
41 words
A pulsating plasma device as recited in claim 5 wherein said cylindrical field exciter is split along the longitudinal axis at one point and leads are attached to each side of said split cylinder for connection to said electric circuit means.
Claim 11
Dependent Claim
127 words
In a pulsating plasma cylindrical column having at least one field exciter member of substantial length positioned in spaced parallel relationship to the longitudinal axis of said plasma column for providing radial ion oscillations in said column said field exciter member electrically insulated from said column, said field exciter member connected to electrical circuit means for transmitting energy to and receiving energy from said field exciter member, said electric circuit means operable at definite frequencies, a method of optimizing the near field energy transferred between said field exciter member and said plasma column, comprising: selecting the operating frequency of said electrical circuit means and the physical characteristics C, sigma , ro and Omega of said plasma in accordance with the resonant frequencies as determined by the table:
Claim 12
Dependent Claim
127 words
In a pulsating plasma cylindrical column having at least one field exciter member of substantial length positioned in spaced parallel relationship to the longitudinal axis of said plasma column for providing radial ion oscillations in said column said field exciter member electrically insulated from said column, said field exciter member connected to electrical circuit means for transmitting energy to and receiving energy from said field exciter member, said electric circuit means operable at definite frequencies, a method of optimizing the near field energy transferred between said field exciter member and said plasma column, comprising: selecting the operating frequency of said electrical circuit means and the physical characteristics C, sigma , ro and Omega of said plasma in accordance with the resonant frequencies as determined by the table:
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |