GB1456242A - Incandescent lamp - Google Patents
Incandescent lampInfo
- Publication number
- GB1456242A GB1456242A GB295273A GB295273A GB1456242A GB 1456242 A GB1456242 A GB 1456242A GB 295273 A GB295273 A GB 295273A GB 295273 A GB295273 A GB 295273A GB 1456242 A GB1456242 A GB 1456242A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphate
- arsenate
- metal
- phosphates
- compositions
- 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
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Paper (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Chemical Treatment Of Metals (AREA)
- Chemically Coating (AREA)
Abstract
1456242 Coated lamp envelopes THORN LIGHTING Ltd 18 Jan 1974 [19 Jan 1973] 2952/73 Heading B2E [Also in Divisions Cl and H1] A tungsten-halogen lamp has a glassy coating of a metal phosphate or arsenate on at least those portions of the internal components which tend to react with halogen. The coating may be derived from an aluminium phosphate complex or from a composition comprising aluminium phosphate and containing a titanium compound. The preferred metal phosphates and arsenates are those of metals of atomic numbers 12, 13, 14, 20-32, 39-50, 56-80, 90 and 92. By "phosphate" is meant ortho-, meta- and para-phosphates, phosphinates and phosphonates. The compositions may be applied as metal compound, an oxyacid phosphorus or arsenate, or a composition capable of forming such an oxyacid, in solution in a solvent which may be at least partly organic. The compositions yield the phosphate or arsenate on being heated. Suitable flowing compounds are oxides, hydroxides, halides, carbonates, hydrates, phosphates, perchlorates and cyanates, as well as salts of organic acid. Co-ordination complexes may also be used. The compositions preferably have atomic ratios of metal to phosphorus or arsenate of from 1:0.1 to 1:2.9. Preferred metals are aluminium, iron, chromium, titanium, vanadium and tin.
Priority Applications (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB295273A GB1456242A (en) | 1973-01-19 | 1973-01-19 | Incandescent lamp |
IE78/74A IE38743B1 (en) | 1973-01-19 | 1974-01-14 | Improved incandescent lamp |
ZA00740275A ZA74275B (en) | 1973-01-19 | 1974-01-15 | Improved incandescent lamp |
CA190,139A CA986980A (en) | 1973-01-19 | 1974-01-15 | Incandescent lamp |
DE2402136A DE2402136C3 (en) | 1973-01-19 | 1974-01-17 | Tungsten halogen lamp and process for its manufacture |
DK24674AA DK140963B (en) | 1973-01-19 | 1974-01-17 | Electric tungsten halogen lamp with a protective coating on the inner surfaces and method of manufacturing the coating. |
LU69186A LU69186A1 (en) | 1973-01-19 | 1974-01-17 | |
SE7400620A SE391836B (en) | 1973-01-19 | 1974-01-17 | ELECTRIC VOLFRAMHALOGEN FLUDE LAMP AND WAY TO PRODUCE THE SAME |
BE139957A BE809912A (en) | 1973-01-19 | 1974-01-18 | IMPROVED INCANDESCENCE LAMP |
US434381A US3902091A (en) | 1973-01-19 | 1974-01-18 | Incandescent lamp |
AU64681/74A AU484239B2 (en) | 1973-01-19 | 1974-01-18 | Improved incandescent lamp |
JP49008913A JPS5818744B2 (en) | 1973-01-19 | 1974-01-19 | Hakunetsudenkiyuu Oyobi Sonoseizohouhou |
IT19617/74A IT1003464B (en) | 1973-01-19 | 1974-01-21 | INCANDESCEN ZA ELECTRIC BULB |
FR7401912A FR2214969B1 (en) | 1973-01-19 | 1974-01-21 | |
NLAANVRAGE7400812,A NL177538C (en) | 1973-01-19 | 1974-01-21 | ELECTRIC TUNGSTEN HALOGEN LIGHT BULB AND METHOD FOR MAKING THIS LAMP. |
US05/564,768 US3982046A (en) | 1973-01-19 | 1975-04-03 | Incandescent lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB295273A GB1456242A (en) | 1973-01-19 | 1973-01-19 | Incandescent lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1456242A true GB1456242A (en) | 1976-11-24 |
Family
ID=9749149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB295273A Expired GB1456242A (en) | 1973-01-19 | 1973-01-19 | Incandescent lamp |
Country Status (14)
Country | Link |
---|---|
US (1) | US3902091A (en) |
JP (1) | JPS5818744B2 (en) |
BE (1) | BE809912A (en) |
CA (1) | CA986980A (en) |
DE (1) | DE2402136C3 (en) |
DK (1) | DK140963B (en) |
FR (1) | FR2214969B1 (en) |
GB (1) | GB1456242A (en) |
IE (1) | IE38743B1 (en) |
IT (1) | IT1003464B (en) |
LU (1) | LU69186A1 (en) |
NL (1) | NL177538C (en) |
SE (1) | SE391836B (en) |
ZA (1) | ZA74275B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5473226A (en) * | 1993-11-16 | 1995-12-05 | Osram Sylvania Inc. | Incandescent lamp having hardglass envelope with internal barrier layer |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3982046A (en) * | 1973-01-19 | 1976-09-21 | Thorn Lighting Limited | Incandescent lamps |
US4185922A (en) * | 1977-01-17 | 1980-01-29 | Thorn Electrical Industries Limited | Method of introducing fluorine into a lamp |
US4256988A (en) * | 1977-01-17 | 1981-03-17 | Thorn Lighting Limited | Incandescent halogen lamp with protective envelope coating |
US4288713A (en) * | 1979-11-23 | 1981-09-08 | Gte Products Corporation | Lamp having opaque coating |
DE4410968A1 (en) * | 1994-03-29 | 1995-10-05 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High pressure mercury lamp |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL37602C (en) * | 1931-12-18 | 1936-03-16 | ||
US2393469A (en) * | 1942-08-03 | 1946-01-22 | Corning Glass Works | Fluorescent glass and lamp made therefrom |
-
1973
- 1973-01-19 GB GB295273A patent/GB1456242A/en not_active Expired
-
1974
- 1974-01-14 IE IE78/74A patent/IE38743B1/en unknown
- 1974-01-15 ZA ZA00740275A patent/ZA74275B/en unknown
- 1974-01-15 CA CA190,139A patent/CA986980A/en not_active Expired
- 1974-01-17 SE SE7400620A patent/SE391836B/en unknown
- 1974-01-17 DE DE2402136A patent/DE2402136C3/en not_active Expired
- 1974-01-17 DK DK24674AA patent/DK140963B/en not_active Application Discontinuation
- 1974-01-17 LU LU69186A patent/LU69186A1/xx unknown
- 1974-01-18 US US434381A patent/US3902091A/en not_active Expired - Lifetime
- 1974-01-18 BE BE139957A patent/BE809912A/en unknown
- 1974-01-19 JP JP49008913A patent/JPS5818744B2/en not_active Expired
- 1974-01-21 NL NLAANVRAGE7400812,A patent/NL177538C/en not_active IP Right Cessation
- 1974-01-21 IT IT19617/74A patent/IT1003464B/en active
- 1974-01-21 FR FR7401912A patent/FR2214969B1/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5473226A (en) * | 1993-11-16 | 1995-12-05 | Osram Sylvania Inc. | Incandescent lamp having hardglass envelope with internal barrier layer |
Also Published As
Publication number | Publication date |
---|---|
SE391836B (en) | 1977-02-28 |
AU6468174A (en) | 1975-07-24 |
DE2402136B2 (en) | 1978-04-13 |
IE38743L (en) | 1974-07-19 |
ZA74275B (en) | 1975-05-28 |
FR2214969B1 (en) | 1977-06-10 |
DK140963B (en) | 1979-12-10 |
NL177538B (en) | 1985-05-01 |
FR2214969A1 (en) | 1974-08-19 |
LU69186A1 (en) | 1974-04-08 |
IE38743B1 (en) | 1978-03-29 |
CA986980A (en) | 1976-04-06 |
JPS5818744B2 (en) | 1983-04-14 |
NL177538C (en) | 1985-10-01 |
NL7400812A (en) | 1974-07-23 |
DE2402136A1 (en) | 1974-07-25 |
BE809912A (en) | 1974-05-16 |
US3902091A (en) | 1975-08-26 |
JPS49104482A (en) | 1974-10-03 |
DE2402136C3 (en) | 1978-12-07 |
DK140963C (en) | 1980-05-27 |
IT1003464B (en) | 1976-06-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |