GB504893A - Improvements in or relating to electric incandescent lamps - Google Patents
Improvements in or relating to electric incandescent lampsInfo
- Publication number
- GB504893A GB504893A GB28593/38A GB2859338A GB504893A GB 504893 A GB504893 A GB 504893A GB 28593/38 A GB28593/38 A GB 28593/38A GB 2859338 A GB2859338 A GB 2859338A GB 504893 A GB504893 A GB 504893A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bulb
- pressure
- excess
- gas
- diameter
- 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
-
- 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
504,893. Electric incandescent lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 1, 1938, No. 28593. Convention date, Oct. 4, 1937. Drawings to Specification. [Class 39 (ii)] A gas-filled lamp with a filling-gas having an operating pressure in excess of 2 atmospheres within a bulb of diameter in excess of 20 mm., preferably in excess of 25 mm., is surrounded by a second bulb which may be filled with gas, the space between the two bulbs or the pressure in the space being so proportioned that in the event of the inner bulb bursting the pressure existing in the outer bulb is from 0À25 to 1 atmosphere. In an example, the inner bulb has a diameter of 30 mm. and contains a mixture of 90 per cent argon and 10 per cent nitrogen at a pressure of 5 atmospheres ; the surrounding bulb has a diameter of 90 mm., and the space between 'the bulbs contains nitrogen at a pressure of 60 cm. of mercury. The inner bulb may be made of glass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL205006X | 1937-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB504893A true GB504893A (en) | 1939-05-02 |
Family
ID=19778509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28593/38A Expired GB504893A (en) | 1937-10-04 | 1938-10-01 | Improvements in or relating to electric incandescent lamps |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE430474A (en) |
| CH (1) | CH205006A (en) |
| FR (1) | FR844304A (en) |
| GB (1) | GB504893A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2135820A (en) * | 1983-02-25 | 1984-09-05 | Gte Prod Corp | Electric lamp with high outer-envelope to inner-envelope wall-thickness ratio |
-
0
- BE BE430474D patent/BE430474A/xx unknown
-
1938
- 1938-10-01 GB GB28593/38A patent/GB504893A/en not_active Expired
- 1938-10-03 CH CH205006D patent/CH205006A/en unknown
- 1938-10-04 FR FR844304D patent/FR844304A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2135820A (en) * | 1983-02-25 | 1984-09-05 | Gte Prod Corp | Electric lamp with high outer-envelope to inner-envelope wall-thickness ratio |
Also Published As
| Publication number | Publication date |
|---|---|
| BE430474A (en) | |
| FR844304A (en) | 1939-07-24 |
| CH205006A (en) | 1939-05-31 |
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