GB1456242A - Incandescent lamp - Google Patents

Incandescent lamp

Info

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
Application number
GB295273A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thorn Lighting Ltd
Original Assignee
Thorn Lighting Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thorn Lighting Ltd filed Critical Thorn Lighting Ltd
Priority to GB295273A priority Critical patent/GB1456242A/en
Priority to IE78/74A priority patent/IE38743B1/en
Priority to ZA00740275A priority patent/ZA74275B/en
Priority to CA190,139A priority patent/CA986980A/en
Priority to DE2402136A priority patent/DE2402136C3/en
Priority to DK24674AA priority patent/DK140963B/en
Priority to LU69186A priority patent/LU69186A1/xx
Priority to SE7400620A priority patent/SE391836B/en
Priority to BE139957A priority patent/BE809912A/en
Priority to US434381A priority patent/US3902091A/en
Priority to AU64681/74A priority patent/AU484239B2/en
Priority to JP49008913A priority patent/JPS5818744B2/en
Priority to IT19617/74A priority patent/IT1003464B/en
Priority to FR7401912A priority patent/FR2214969B1/fr
Priority to NLAANVRAGE7400812,A priority patent/NL177538C/en
Priority to US05/564,768 priority patent/US3982046A/en
Publication of GB1456242A publication Critical patent/GB1456242A/en
Expired legal-status Critical Current

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.
GB295273A 1973-01-19 1973-01-19 Incandescent lamp Expired GB1456242A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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