GB518016A - Improvements in or relating to gasfilled electric incandescent lamps - Google Patents
Improvements in or relating to gasfilled electric incandescent lampsInfo
- Publication number
- GB518016A GB518016A GB17567/38A GB1756738A GB518016A GB 518016 A GB518016 A GB 518016A GB 17567/38 A GB17567/38 A GB 17567/38A GB 1756738 A GB1756738 A GB 1756738A GB 518016 A GB518016 A GB 518016A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filament
- bulb
- incandescent lamps
- electric incandescent
- relating
- 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/14—Incandescent bodies characterised by the shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/58—Cooling arrangements
-
- 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
- Resistance Heating (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Discharge Lamp (AREA)
Abstract
518,016. Electric incandescent lamps. NAAMLOOZE VENNOOTSCHAP . PHILIPS' GLOEILAMPENFABRIEKEN. June 13, 1938, No. 17567. Convention date, June 12, 1937. Drawings to Specification. [Class 39 (ii)] A gas-filled lamp having an operating pressure exceeding 1 atmosphere and a bulb containing a filament of highly concentrated form, such as a coiled coil, has an internal diameter opposite the filament of not more than 15 mm. and of at least two-thirds the dimension of the filament in the longitudinal direction of the bulb and the filament is arranged in the immediate neighbourhood of one of the ends of the bulb. Blackening occurs where luminous radiation is not obstructed. Lamps for 12 and 230 volts and fittings at 15 atmospheres (cold) are described. Specification 515,704, is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL206539X | 1937-06-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB518016A true GB518016A (en) | 1940-02-15 |
Family
ID=19778583
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17180/38A Expired GB515704A (en) | 1937-06-12 | 1938-06-09 | Improvements in gasfilled electric incandescent lamps |
GB17567/38A Expired GB518016A (en) | 1937-06-12 | 1938-06-13 | Improvements in or relating to gasfilled electric incandescent lamps |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17180/38A Expired GB515704A (en) | 1937-06-12 | 1938-06-09 | Improvements in gasfilled electric incandescent lamps |
Country Status (5)
Country | Link |
---|---|
BE (2) | BE428542A (en) |
CH (1) | CH206539A (en) |
DE (2) | DE699404C (en) |
FR (2) | FR839199A (en) |
GB (2) | GB515704A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1112785B (en) * | 1955-07-08 | 1961-08-17 | Sylvania Electric Prod | High frequency heated incandescent lamp |
BR8400807A (en) * | 1983-02-25 | 1984-10-02 | Gte Prod Corp | ELECTRIC HALOGEN / TUNGSTEN LAMP WITH PERMEATABLE ELEMENT CLOSING THE EXTERNAL HOUSING |
RU2485395C1 (en) * | 2012-02-22 | 2013-06-20 | Юлия Алексеевна Щепочкина | Led lamp bulb |
-
0
- BE BE428543D patent/BE428543A/xx unknown
- BE BE428542D patent/BE428542A/xx unknown
-
1938
- 1938-06-09 GB GB17180/38A patent/GB515704A/en not_active Expired
- 1938-06-10 DE DE1938N0042078 patent/DE699404C/en not_active Expired
- 1938-06-10 DE DEN42077D patent/DE725341C/en not_active Expired
- 1938-06-10 CH CH206539D patent/CH206539A/en unknown
- 1938-06-11 FR FR839199D patent/FR839199A/en not_active Expired
- 1938-06-11 FR FR839200D patent/FR839200A/en not_active Expired
- 1938-06-13 GB GB17567/38A patent/GB518016A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE725341C (en) | 1942-09-19 |
BE428543A (en) | |
FR839200A (en) | 1939-03-28 |
GB515704A (en) | 1939-12-12 |
FR839199A (en) | 1939-03-28 |
DE699404C (en) | 1940-11-28 |
BE428542A (en) | |
CH206539A (en) | 1939-08-15 |
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