GB465337A - Improvements in or relating to gasfilled electric discharge tubes - Google Patents
Improvements in or relating to gasfilled electric discharge tubesInfo
- Publication number
- GB465337A GB465337A GB4681/37A GB468137A GB465337A GB 465337 A GB465337 A GB 465337A GB 4681/37 A GB4681/37 A GB 4681/37A GB 468137 A GB468137 A GB 468137A GB 465337 A GB465337 A GB 465337A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- lamp
- electric discharge
- relating
- walled
- 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
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
- H01J61/26—Means for absorbing or adsorbing gas, e.g. by gettering; Means for preventing blackening of the envelope
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
465,337. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 16, 1937, No. 4681. Convention date, Feb. 19, 1936. [Class 39 (i)] In a gas-filled electric discharge lamp which is enclosed in an outer detachable envelope 4, a waterattracting substance 7 is placed in the space between the lamp 1 and the envelope ; this may be single-walled or double-walled. The substance may be any hygroscopic material such as calcium oxide and calcium chloride or it may be active carbon or silica gel; it may be held in a gauze basket. While cold, water vapour in the envelope 4 will be absorbed by the material 7, but during running of the lamp the water will be evaporated and surround the discharge lamp ; this may have a sodium or a high-pressure mercury-vapour filling.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL465337X | 1936-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB465337A true GB465337A (en) | 1937-05-05 |
Family
ID=19786424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4681/37A Expired GB465337A (en) | 1936-02-19 | 1937-02-16 | Improvements in or relating to gasfilled electric discharge tubes |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2152995A (en) |
| BE (1) | BE420072A (en) |
| DE (1) | DE665480C (en) |
| FR (1) | FR818047A (en) |
| GB (1) | GB465337A (en) |
| NL (1) | NL50468C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2615146A (en) * | 1948-02-11 | 1952-10-21 | Cooper Hewitt Electric Co | Thermostatic switch |
| NL7902574A (en) * | 1979-04-03 | 1980-10-07 | Philips Nv | HIGH PRESSURE DISCHARGE LAMP. |
-
0
- BE BE420072D patent/BE420072A/xx unknown
- NL NL50468D patent/NL50468C/xx active
-
1936
- 1936-03-05 DE DEN39212D patent/DE665480C/en not_active Expired
-
1937
- 1937-02-09 US US124854A patent/US2152995A/en not_active Expired - Lifetime
- 1937-02-16 GB GB4681/37A patent/GB465337A/en not_active Expired
- 1937-02-18 FR FR818047D patent/FR818047A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE665480C (en) | 1938-09-28 |
| US2152995A (en) | 1939-04-04 |
| BE420072A (en) | |
| NL50468C (en) | |
| FR818047A (en) | 1937-09-16 |
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