GB496021A - Improvements in and relating to the envelopes of electric lamps and discharge tubes - Google Patents
Improvements in and relating to the envelopes of electric lamps and discharge tubesInfo
- Publication number
- GB496021A GB496021A GB7886/38A GB788638A GB496021A GB 496021 A GB496021 A GB 496021A GB 7886/38 A GB7886/38 A GB 7886/38A GB 788638 A GB788638 A GB 788638A GB 496021 A GB496021 A GB 496021A
- Authority
- GB
- United Kingdom
- Prior art keywords
- closures
- envelopes
- relating
- march
- walls
- 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/34—Double wall vessels
-
- 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
- H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
- H01J5/12—Double-wall vessels or containers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
496,021. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. March 14, 1938, No. 7886. Convention date, March 13, 1937. [Class 39 (i)] [Also in Group XI] In lamps with double walled envelopes the two walls 10, 12 are sealed at one end to a common closure 11 and at the other to separate closures 11<1>, 13, so that the two compartments may be independently evacuated and gas filled. A spring 14 makes contact between the closures 11<1>, 13. The electrodes are carried on the closures 11, 13. The left hand end of the inner tube 12 as shown may be supported by a perforated annulus from the wall of the outer tube 10. By provision of nipples on the tube 10 or on the end closures cooling water may be circulated through the outer compartment. The end closures and walls may be formed as described in Specifications 428,414, 452,191, [both in Group XI], and 485,329.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US130713A US2114175A (en) | 1937-03-13 | 1937-03-13 | Electric lamp or similar device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB496021A true GB496021A (en) | 1938-11-23 |
Family
ID=22445990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7886/38A Expired GB496021A (en) | 1937-03-13 | 1938-03-14 | Improvements in and relating to the envelopes of electric lamps and discharge tubes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2114175A (en) |
| DE (1) | DE683218C (en) |
| FR (1) | FR835103A (en) |
| GB (1) | GB496021A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136201A (en) * | 1983-02-25 | 1984-09-12 | Gte Prod Corp | Electric lamp with self-mounting frame-assembly; and methods of constructing same |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2453986A (en) * | 1945-05-07 | 1948-11-16 | Gen Electric | Circular electric lamp |
| NL193793A (en) * | 1955-01-05 | |||
| US2922124A (en) * | 1957-06-04 | 1960-01-19 | Bomac Lab Inc | Microwave transmission control device |
| NL230451A (en) * | 1957-08-13 | |||
| US4296350A (en) * | 1979-12-21 | 1981-10-20 | Gte Products Corporation | Gaseous fluorescent discharge lamp |
| US4401913A (en) * | 1981-06-03 | 1983-08-30 | Gte Products Corporation | Discharge lamp with mount providing self centering and thermal expansion compensation |
-
1937
- 1937-03-13 US US130713A patent/US2114175A/en not_active Expired - Lifetime
-
1938
- 1938-01-28 DE DEP76655D patent/DE683218C/en not_active Expired
- 1938-03-11 FR FR835103D patent/FR835103A/en not_active Expired
- 1938-03-14 GB GB7886/38A patent/GB496021A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136201A (en) * | 1983-02-25 | 1984-09-12 | Gte Prod Corp | Electric lamp with self-mounting frame-assembly; and methods of constructing same |
Also Published As
| Publication number | Publication date |
|---|---|
| US2114175A (en) | 1938-04-12 |
| FR835103A (en) | 1938-12-13 |
| DE683218C (en) | 1939-11-02 |
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