US3575626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode mounting brackets producing shorter electron gun mounts in cathode-ray tubes
Assignee: KENTRCKY ELECTRONICS Inc
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Filing: 1968-09-05
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Granted: 1971-04-20
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Expires: 1988-09-05
Abstract
Abstract An electrode holding plate is provided for retaining a cathode sleeve or the like having arms for mounting into a glass bead support member with component members which extend in the glass bead in two directions generally normal to and axially with the electron beam path comprising a bent over substantially L-shaped terminal flange. By establishing the primary bracket dimension normal to the beam, a very short mounting space in the glass bead is permitted to thereby foreshorten the electron gun mounting space and the neck of the tube without decreasing mounting stability or permitting tilt and change under thermal stresses of critical parts affecting cathode-to-grid spacing and orientation.
Inventors
- 👤 Hurst H Blumenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:46
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/48; H01J29/50; H01J29/506; H01J29/82
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
Improvements for a cathode-ray tube comprising in combination, an electrode for mounting adjacent other electrodes mounted along the electron gun axis in a glass bead mounting support member within an electron gun of a cathode-ray tube including a bracket extending from said electrode having two arms for extending into said glass bead to hold the electrode in place adjacent to another electrode mounted in said bead, the arms having terminal ends for entering the beads from a bent over substantially L-shaped flange giving support in two normal dimensions, said flange extending over a region in mounted position from a position inside said glass bead to a position outside said glass bead coupled to said electrode in a manner assuring said two dimensional support to the electrode to discourage twisting of the electrode from alignment along the electron gun axis and permitting support of the electrode over a very short length of the glass bead along the gun axis.
Claim 2
Dependent Claim
158 words
Improvements for a cathode-ray tube comprising in combination, an electrode for mounting adjacent other electrodes mounted along the electron gun axis in a glass bead mounting support member within an electron gun of a cathode-ray tube including a bracket extending from said electrode having two arms for extending into said glass bead to hold the electrode in place adjacent to another electrode mounted in said bead, the arms having terminal ends for entering the beads from a bent over substantially L-shaped flange giving support in two normal dimensions, said flange extending over a region in mounted position from a position inside said glass bead to a position outside said glass bead coupled to said electrode in a manner assuring said two dimensional support to the electrode to discourage twisting of the electrode from alignment along the electron gun axis and permitting support of the electrode over a very short length of the glass bead along the gun axis.
Claim 3
Dependent Claim
53 words
An electrode mount as defined in claim 1, wherein the electrode extending from the bracket is a cathode and the bracket comprises a holder with an aperture coaxial with the axis of at least one electron beam in said tube, said aperture adapted to receive in registration therewith an assembly including said cathode.
Claim 4
Dependent Claim
34 words
An improvement as defined in claim 2, including a glass bead with said bracket mounted with the terminal ends enveloped in said bead between two adjacent brackets respectively welded to grid and filament electrodes.
Claim 5
Dependent Claim
30 words
An improvement as defined in claim 3, wherein the electron gun is of the zero-focus type having a fourth grid and intermediate grids with brackets commonly affixed into said bead.
Claim 6
Dependent Claim
53 words
An improvement as defined in claim 3, wherein the tube is a three gun color picture tube with three glass beads, and wherein at least one bracket for mounting the filament electrode is affixed into each bead, and including connection from two of said latter brackets to the filaments of two adjacent guns.
References Cited (Backward Citations)
US2982878A
Cited
US3265920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |