US3680184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an electrostatic deflection electrode array
Assignee: General Electric Co
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Filing: 1970-05-05
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Granted: 1972-08-01
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Expires: 1990-05-05
Abstract
Abstract An array of electrostatic deflection electrodes comprising parallel bars is produced by cutting parallel grooves in a block which is releasably bonded to a temporary support. The grooves are cut to a depth greater than the thickness of the block leaving portions comprising parallel bars. Following this step, the assembly is inverted and the grooved block is permanently bonded to a support while the temporary support is still bonded to the block to maintain the alignment of the parallel bars comprising the grooved block. The temporary support is then removed. If non-metallic material is used, the bars are metalized in a final step.
Inventors
- 👤 Ralph F Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:14
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/80; H01J29/803; H01J29/806
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
23 words
The process of claim 1 wherein which said block comprises ceramic and selected portions of the ceramic are metalized after cutting said block.
Claim 2
Independent Claim
131 words
A method of making an array of deflection electrodes for an electron beam tube comprising accurately spaced bars mounted in electrically insulated relationship on a support comprising the steps of: a. releasably mounting a block having predetermined dimensions to a temporary support member to form a temporary assembly; b. forming parallel and equally spaced grooves of equal width in said block of said assembly of a depth at least equal to the thickness of said block to form accurately spaced bars; c. thereafter mounting said bars formed from said block to a support structure while said bars remain attached to said temporary support member; d. then removing said temporary support member to provide an array of deflection electrodes; and e. mounting said array of deflection electrodes in an electron beam tube.
Claim 3
Dependent Claim
24 words
The method of claim 3 wherein said grooves are formed in said assembly to a depth in excess of the thickness of said block.
Claim 4
Independent Claim
168 words
The method of making an array of deflection electrodes for an electron beam tube comprising accurately spaced bars mounted in electrically insulated relationship on a support comprising the steps of: a. releasably bonding a ceramic block having predetermined dimensions to a temporary support member with a decomposable bonding material; b. forming parallel and equally spaced grooves of equal widths in said block and said support member of a depth in excess of the thickness of said block without severing said support member to divide said block into parallel portions of equal width and equal spacing; c. thereafter bonding said portions of said block to a ceramic support structure; d. then removing said temporary support member; and e. metallizing said remaining portions of said ceramic block; thereby forming an array of deflection electrodes mounted in insulated relationship to said ceramic support structure with accurate alignment of the electrodes due to the accurate formation of the grooves; and f. mounting said array of deflection electrodes in an electron beam tube.
Claim 5
Dependent Claim
18 words
The method of claim 3 wherein said block is mounted in electrically insulated relationship to said support structure.
Claim 6
Dependent Claim
16 words
The method of claim 3 wherein said block comprises ceramic material and said bars are metalized.
Claim 7
Dependent Claim
16 words
The method of claim 7 wherein said ceramic bars are bonded to a ceramic support structure.
Claim 8
Dependent Claim
20 words
The method of claim 3 wherein said temporary support member is bonded to said block by a decomposable bonding material.
Claim 9
Dependent Claim
17 words
The method of claim 9 wherein said block is bonded to said support by an epoxy resin.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |