GB502078A - Improvements in or relating to gasfilled electric incandescent lamps - Google Patents
Improvements in or relating to gasfilled electric incandescent lampsInfo
- Publication number
- GB502078A GB502078A GB34494/38A GB3449438A GB502078A GB 502078 A GB502078 A GB 502078A GB 34494/38 A GB34494/38 A GB 34494/38A GB 3449438 A GB3449438 A GB 3449438A GB 502078 A GB502078 A GB 502078A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zirconium
- pieces
- temperature
- lamp
- bulb
- 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
- H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
- H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
- H01K1/56—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering characterised by the material of the getter
Landscapes
- Resistance Heating (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
502,078. Electric incandescent lamps with residual gases. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 26, 1938, No. 34494. Convention date, Nov. 29, 1937. Drawings to Specification. [Class 39 (ii)] In a gas-filled lamp having an operating pressure exceeding 4 atmospheres and with pieces of zirconium arranged in it for absorption of residual gases and impurities that exist in the lamp, the pieces of zirconium are so arranged in a space of the lamp that exhibits a temperature gradient that the temperature assumed by each of these pieces when the lamp is in use corresponds to the optimum temperature for the absorption of a given residual gas or of a given impurity by the zirconium. In an example two pieces of zirconium are arranged on one of the leading-in wires of a lamp comprising a tubular quartz bulb with a gas filling of krypton and nitrogen having an operating pressure of 25 atmospheres. The temperature gradient within the bulb is such that one piece of zirconium assumes a temperature of about 700 C., and the other a temperature of about 500 C., these pieces respectively being capable of absorbing any residual oxygen and hydrogen that may emanate from the quartz of the bulb. The temperature of the pieces of zirconium may be controlled at will by their disposition on the leading-in wires. Alternatively they may bo mounted on a specially provided supporting- rod, or in any other manner.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE208438X | 1937-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB502078A true GB502078A (en) | 1939-03-10 |
Family
ID=5794241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34494/38A Expired GB502078A (en) | 1937-11-29 | 1938-11-26 | Improvements in or relating to gasfilled electric incandescent lamps |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2203896A (en) |
| BE (1) | BE431317A (en) |
| CH (1) | CH208438A (en) |
| FR (1) | FR846696A (en) |
| GB (1) | GB502078A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2749462A (en) * | 1952-05-31 | 1956-06-05 | Gen Electric | High pressure mercury vapor lamp with zirconium getter |
| US3149716A (en) * | 1959-09-29 | 1964-09-22 | Dick Co Ab | Evaporator vacuum pump |
| US3133224A (en) * | 1960-11-25 | 1964-05-12 | Gen Electric | Electric discharge device |
| US3167678A (en) * | 1961-06-19 | 1965-01-26 | Gen Electric | Getter operating at various temperatures to occlude various gases |
| DE2659609A1 (en) * | 1976-12-30 | 1978-07-20 | Patra Patent Treuhand | ELECTRIC LIGHT BULB |
| US5128106A (en) * | 1990-07-12 | 1992-07-07 | Gte Products Corporation | Lamp with an oxygen detector |
| EP2665046A1 (en) * | 2012-05-18 | 2013-11-20 | Proindumar S.L. | Self-turning device with the ability to mix and identify balls, located in a portable compartment with auxiliary control elements |
-
0
- BE BE431317D patent/BE431317A/xx unknown
-
1938
- 1938-10-27 US US237334A patent/US2203896A/en not_active Expired - Lifetime
- 1938-11-26 CH CH208438D patent/CH208438A/en unknown
- 1938-11-26 GB GB34494/38A patent/GB502078A/en not_active Expired
- 1938-11-28 FR FR846696D patent/FR846696A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH208438A (en) | 1940-01-31 |
| FR846696A (en) | 1939-09-21 |
| US2203896A (en) | 1940-06-11 |
| BE431317A (en) |
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