GB724290A - Improvements in or relating to the manufacture of evacuated envelopes - Google Patents
Improvements in or relating to the manufacture of evacuated envelopesInfo
- Publication number
- GB724290A GB724290A GB375553A GB375553A GB724290A GB 724290 A GB724290 A GB 724290A GB 375553 A GB375553 A GB 375553A GB 375553 A GB375553 A GB 375553A GB 724290 A GB724290 A GB 724290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- evacuated
- envelope
- parts
- feb
- parent specification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/20—Seals between parts of vessels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0037—Solid sealing members other than lamp bases
Landscapes
- Physical Vapour Deposition (AREA)
Abstract
724,290. Discharge apparatus. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Feb. 10, 1953 [Feb. 16, 1952], No. 3755/53. Addition to 697,922. Class 39 (1). In sealing together parts of an evacuated envelope by a method such as that described in the parent Specification, in which the envelope parts are machined to fit closely together, coated with a suitable material, the meeting surfaces polished to an optical finish, and then heated to cause molecular diffusion to occur in said materials and thus form the joint, the whole operation is carried out in an' outer evacuated chamber. In Fig. 1, L, K, N are the walls of a bell evacuated through a tube Q. The meeting surfaces of the two envelope parts A, B are prepared as described in the parent Specification, and the upper part B is held in a chuck E which can be moved downwards by a screw and bellows device F, G. A heating coil H is used to degas the electrodes, and finally to perform the sealing operation. A thermocouple i measures the temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1013841T | 1950-03-04 | ||
| FR62475T | 1952-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB724290A true GB724290A (en) | 1955-02-16 |
Family
ID=32826917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB375553A Expired GB724290A (en) | 1950-03-04 | 1953-02-10 | Improvements in or relating to the manufacture of evacuated envelopes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB724290A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2996347A (en) * | 1957-12-05 | 1961-08-15 | Eitel Mccullough Inc | Method and apparatus for making electron tubes |
| US3002645A (en) * | 1957-08-08 | 1961-10-03 | Kimble Glass Co | Hermetic joint for glass cathode-ray tube envelope |
| DE1194066B (en) * | 1957-12-05 | 1965-06-03 | Eitel Mccullough Inc | Method and device for the production of electron tubes |
| US3460879A (en) * | 1966-06-29 | 1969-08-12 | Thorn Aei Radio Valves & Tubes | Cathode ray tubes |
| US4305631A (en) * | 1979-12-05 | 1981-12-15 | Radiologic Sciences, Inc. | High temperature bearing bakeout process |
| GB2340656A (en) * | 1998-08-12 | 2000-02-23 | Ibm | Photo-cathode flat panel display device manufacture |
-
1953
- 1953-02-10 GB GB375553A patent/GB724290A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3002645A (en) * | 1957-08-08 | 1961-10-03 | Kimble Glass Co | Hermetic joint for glass cathode-ray tube envelope |
| US2996347A (en) * | 1957-12-05 | 1961-08-15 | Eitel Mccullough Inc | Method and apparatus for making electron tubes |
| DE1194066B (en) * | 1957-12-05 | 1965-06-03 | Eitel Mccullough Inc | Method and device for the production of electron tubes |
| US3460879A (en) * | 1966-06-29 | 1969-08-12 | Thorn Aei Radio Valves & Tubes | Cathode ray tubes |
| US4305631A (en) * | 1979-12-05 | 1981-12-15 | Radiologic Sciences, Inc. | High temperature bearing bakeout process |
| GB2340656A (en) * | 1998-08-12 | 2000-02-23 | Ibm | Photo-cathode flat panel display device manufacture |
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