GB512083A - Improvements in gasfilled electric incandescent lamps - Google Patents
Improvements in gasfilled electric incandescent lampsInfo
- Publication number
- GB512083A GB512083A GB17179/38A GB1717938A GB512083A GB 512083 A GB512083 A GB 512083A GB 17179/38 A GB17179/38 A GB 17179/38A GB 1717938 A GB1717938 A GB 1717938A GB 512083 A GB512083 A GB 512083A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chimney
- bulb
- wall
- filament
- june
- 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
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
512,083. Electric incandescent lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 9, 1938, No. 17179. Convention date, June 12, 1937. [Class 39 (ii)] Deposit collectors. - In a gasfilled lamp with an operating gaseous pressure exceeding 5 atmospheres and a bulb having an internal diameter not exceeding 15 m.m., blackening of the bulb due to vaporisation of the filament is prevented by providing above the filament 3 a chimney 2, with means such as glass, or quartz-wool 7, or a helical coil of wire, positioned in the space 5 between the outer wall of the chimney and the inside wall of the bulb to retard the movement of the gas stream produced by the chimney. The chimney 2 consists of a tube of quartz glass and may have a slightly conical shape. The Specification as open to inspection under Sect. 91 describes also modifications wherein:- (1) the retarding means around the chimney is omitted, (2) the chimney is formed by the inner wall of a wire helix which is arranged so as to be in contact with the inner wall of the bulb, (3) the chimney action may be produced by the filament itself, which is wound as a comparatively rigid coil. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL205004X | 1937-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB512083A true GB512083A (en) | 1939-08-29 |
Family
ID=19778508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17179/38A Expired GB512083A (en) | 1937-06-12 | 1938-06-09 | Improvements in gasfilled electric incandescent lamps |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2211597A (en) |
| BE (1) | BE428541A (en) |
| CH (1) | CH205004A (en) |
| DE (1) | DE707824C (en) |
| FR (1) | FR839169A (en) |
| GB (1) | GB512083A (en) |
| NL (1) | NL52995C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3435272A (en) * | 1966-07-15 | 1969-03-25 | Gen Electric | Tubular halogen cycle incandescent lamp with inner cylinder for universal operation |
-
0
- BE BE428541D patent/BE428541A/xx unknown
- NL NL52995D patent/NL52995C/xx active
-
1938
- 1938-06-06 US US212178A patent/US2211597A/en not_active Expired - Lifetime
- 1938-06-09 GB GB17179/38A patent/GB512083A/en not_active Expired
- 1938-06-10 FR FR839169D patent/FR839169A/en not_active Expired
- 1938-06-10 DE DEN42076D patent/DE707824C/en not_active Expired
- 1938-06-10 CH CH205004D patent/CH205004A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE428541A (en) | |
| DE707824C (en) | 1941-07-04 |
| NL52995C (en) | |
| CH205004A (en) | 1939-05-31 |
| FR839169A (en) | 1939-03-28 |
| US2211597A (en) | 1940-08-13 |
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