US3783327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filamentary cathode mount and mounting method
Assignee: RCA Corp
•
Filing: 1972-06-30
•
Granted: 1974-01-01
•
Expires: 1992-06-30
Abstract
Abstract A mount comprising a filamentary cathode held in longitudinal tension between two suspension members movable one with respect to the other; a fixed electrically-insulating support in contact with a surface of the cathode intermediate the ends thereof; and means for displacing the longitudinal pulling plane relative to the center-of-gravity of the cathode, whereby the cathode surface is forced against the support. Also included is a method of mounting a filamentary cathode in the mount.
Inventors
- 👤 B Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:49
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/15; H01J1/18; H01J21/00; H01J21/02; H01J21/06; H01J21/10; H01J21/14; H01J2893/00; H01J2893/0029
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
68 words
In a filamentary cathode mount comprising a filamentary cathode held in longitudinal tension between two suspension members movable one with respect to the other, the improvement comprising: a. a fixed electrically-insulating support in contact with a surface of said cathode intermediate the ends thereof; and b. means for displacing the longitudinal pulling plane relative to the center-of-gravity of said cathode, whereby said surface is forced against said support.
Claim 2
Dependent Claim
68 words
In a filamentary cathode mount comprising a filamentary cathode held in longitudinal tension between two suspension members movable one with respect to the other, the improvement comprising: a. a fixed electrically-insulating support in contact with a surface of said cathode intermediate the ends thereof; and b. means for displacing the longitudinal pulling plane relative to the center-of-gravity of said cathode, whereby said surface is forced against said support.
Claim 3
Dependent Claim
19 words
The filamentary cathode mount of claim 1, wherein said support is disposed midway along the length of said cathode.
Claim 4
Dependent Claim
17 words
The filamentary cathode mount of claim 1, wherein said support is a pin made of electrically-insulating material.
Claim 5
Dependent Claim
19 words
The filamentary cathode mount of claim 1, wherein said means comprises offset heads at said ends of said cathode.
Claim 6
Dependent Claim
81 words
In a filamentary cathode mount comprising a filamentary cathode located within a longitudinal channel and held in longitudinal tension between two suspension members movable one with respect to the other, the improvement comprising: a. an electrically-insulating support affixed to said channel, said support being in contact with a surface of said cathode midway along the length thereof; and b. means for displacing the longitudinal pulling plane relative to the center-of-gravity of said cathode, whereby said surface is forced against said support.
Claim 7
Dependent Claim
81 words
In a filamentary cathode mount comprising a filamentary cathode located within a longitudinal channel and held in longitudinal tension between two suspension members movable one with respect to the other, the improvement comprising: a. an electrically-insulating support affixed to said channel, said support being in contact with a surface of said cathode midway along the length thereof; and b. means for displacing the longitudinal pulling plane relative to the center-of-gravity of said cathode, whereby said surface is forced against said support.
Claim 8
Dependent Claim
14 words
The filamentary cathode mount of claim 5, wherein said support is a sapphire pin.
Claim 9
Dependent Claim
19 words
The filamentary cathode mount of claim 5, wherein said surface of said cathode faces the base of said channel.
Claim 10
Dependent Claim
18 words
The filamentary cathode mount of claim 7, wherein said surface of said cathode is a non-electron-emissive portion thereof.
Claim 11
Dependent Claim
84 words
In a filamentary cathode mount comprising a plurality of filamentary cathodes, each cathode being located within a longitudinal channel and held in longitudinal tension between two suspension members movable one with respect to the other, the improvement comprising: a. each channel having affixed thereto an electrically-insulating pin in contact with one of said cathodes, intermediate the ends thereof; and b. means for displacing the longitudinal pulling plane relative to the center-of-gravity of each cathode, whereby each cathode is forced against one of said pins.
Claim 12
Dependent Claim
84 words
In a filamentary cathode mount comprising a plurality of filamentary cathodes, each cathode being located within a longitudinal channel and held in longitudinal tension between two suspension members movable one with respect to the other, the improvement comprising: a. each channel having affixed thereto an electrically-insulating pin in contact with one of said cathodes, intermediate the ends thereof; and b. means for displacing the longitudinal pulling plane relative to the center-of-gravity of each cathode, whereby each cathode is forced against one of said pins.
Claim 13
Dependent Claim
73 words
In a method of mounting a filamentary cathode comprising the step of placing said cathode in longitudinal tension between two suspension members movable one with respect to the other, the improvement comprising the steps of: a. providing a fixed electrically-insulating support to contact a surface of said cathode intermediate the ends thereof; and b. displacing the longitudinal pulling plane relative to the center-of-gravity of said cathode, thereby forcing said surface against said support.
Claim 14
Dependent Claim
73 words
In a method of mounting a filamentary cathode comprising the step of placing said cathode in longitudinal tension between two suspension members movable one with respect to the other, the improvement comprising the steps of: a. providing a fixed electrically-insulating support to contact a surface of said cathode intermediate the ends thereof; and b. displacing the longitudinal pulling plane relative to the center-of-gravity of said cathode, thereby forcing said surface against said support.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |