GB523589A - Improvements in or relating to electric gasfilled incandescent lamps - Google Patents
Improvements in or relating to electric gasfilled incandescent lampsInfo
- Publication number
- GB523589A GB523589A GB17156/39A GB1715639A GB523589A GB 523589 A GB523589 A GB 523589A GB 17156/39 A GB17156/39 A GB 17156/39A GB 1715639 A GB1715639 A GB 1715639A GB 523589 A GB523589 A GB 523589A
- Authority
- GB
- United Kingdom
- Prior art keywords
- outer bulb
- extension
- gasfilled
- lamps
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
523,589. Incandescent electric lamps. PHILIPS LAMPS, Ltd. June 12, 1939, No. 17156. Convention date, June 14, 1938. [Class 39 (ii)] In order to render gasfilled filament lamps safe against explosion when their useful life has come tc an end, they are formed with bulbs 1, Fig. 1, having a capillary extension 5 which can be filed off or broken by pliers so as tc allow of slow escape of the gas. Where the inner bulb is contained within an outer bulb 8, Fig. 2, the outer bulb is formed with an opening closed and sealed by a removable glass cover 10. Alternatively, the capillary extensions may project through an opening in the outer bulb which is covered by a spring cap or is filled in with cement, wax, or lead. The outer bulb may have, integral with it, an interior annular cup surrounding the extension so that when the outer bulb is broken the extension is fractured and the gas released.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL523589X | 1938-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB523589A true GB523589A (en) | 1940-07-17 |
Family
ID=19787030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17156/39A Expired GB523589A (en) | 1938-06-14 | 1939-06-12 | Improvements in or relating to electric gasfilled incandescent lamps |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2180141A (en) |
| BE (1) | BE434866A (en) |
| FR (1) | FR856136A (en) |
| GB (1) | GB523589A (en) |
| NL (1) | NL88356C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3204085A (en) * | 1962-08-15 | 1965-08-31 | Lockheed Aircraft Corp | Heating device |
-
0
- BE BE434866D patent/BE434866A/xx unknown
- NL NL88356D patent/NL88356C/xx active
-
1939
- 1939-06-12 GB GB17156/39A patent/GB523589A/en not_active Expired
- 1939-06-13 FR FR856136D patent/FR856136A/en not_active Expired
- 1939-06-26 US US281287A patent/US2180141A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE434866A (en) | |
| NL88356C (en) | |
| US2180141A (en) | 1939-11-14 |
| FR856136A (en) | 1940-05-30 |
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