GB1485378A - Pinch foil seals - Google Patents

Pinch foil seals

Info

Publication number
GB1485378A
GB1485378A GB5739273A GB5739273A GB1485378A GB 1485378 A GB1485378 A GB 1485378A GB 5739273 A GB5739273 A GB 5739273A GB 5739273 A GB5739273 A GB 5739273A GB 1485378 A GB1485378 A GB 1485378A
Authority
GB
United Kingdom
Prior art keywords
seal
pinch
glass
immersion
dec
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
GB5739273A
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 GB5739273A priority Critical patent/GB1485378A/en
Publication of GB1485378A publication Critical patent/GB1485378A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/04—Joining glass to metal by means of an interlayer
    • C03C27/042—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/38—Seals for leading-in conductors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

1485378 Protecting pinch seals THORN LIGHTING Ltd 10 Dec 1974 [11 Dec 1973] 57392/73 Heading C1M A pinch foil seal is protected against oxidation by coating the seal, after its formation, with a layer of glass comprising, in mole per cent: the remainder of the glass, if any, up to at least 99 mole per cent, being one or more oxides selected from alkali metal oxides, alkaline earth metal oxides and zinc oxide. The seal 11 may comprise molybdenum foil 12 and attached conductors 13 and 15 (15 acting as a filament in lamp envelope 10) enclosed in a quartz pinch (11). The seal is coated by immersion, up to line X-X, in a slurry of, e.g., 30 gm. of the glass in 100 ml. methylated spirit, drying at 60‹ C. in air for 2 minutes, repeating the immersion and drying until a desired thickness is achieved, and firing at 450‹ C. for 10 minutes in air.
GB5739273A 1974-12-10 1974-12-10 Pinch foil seals Expired GB1485378A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5739273A GB1485378A (en) 1974-12-10 1974-12-10 Pinch foil seals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5739273A GB1485378A (en) 1974-12-10 1974-12-10 Pinch foil seals

Publications (1)

Publication Number Publication Date
GB1485378A true GB1485378A (en) 1977-09-08

Family

ID=10479067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5739273A Expired GB1485378A (en) 1974-12-10 1974-12-10 Pinch foil seals

Country Status (1)

Country Link
GB (1) GB1485378A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749902A (en) * 1985-12-18 1988-06-07 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh Lamp with a bulb made of a high silica content glass
EP1294012A3 (en) * 2001-09-12 2003-10-15 Ushiodenki Kabushiki Kaisha Discharge lamp
WO2009030264A1 (en) * 2007-08-29 2009-03-12 Osram Gesellschaft mit beschränkter Haftung Method for the production of a sealing region and discharge lamp produced by said method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749902A (en) * 1985-12-18 1988-06-07 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh Lamp with a bulb made of a high silica content glass
EP1294012A3 (en) * 2001-09-12 2003-10-15 Ushiodenki Kabushiki Kaisha Discharge lamp
US6815892B2 (en) 2001-09-12 2004-11-09 Ushiodenki Kabushiki Kaisha Discharge lamp with metal oxide coating
CN1303643C (en) * 2001-09-12 2007-03-07 优志旺电机株式会社 Discharge lamp
WO2009030264A1 (en) * 2007-08-29 2009-03-12 Osram Gesellschaft mit beschränkter Haftung Method for the production of a sealing region and discharge lamp produced by said method
CN101743612B (en) * 2007-08-29 2012-05-16 欧司朗股份有限公司 Method for the production of a sealing region and discharge lamp produced by said method
US8308519B2 (en) 2007-08-29 2012-11-13 Osram Ag Method for the production of a sealing region and discharge lamp produced by said method

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee