GB1025723A - Improvements in or relating to electrical devices having hermetically sealed envelopes - Google Patents

Improvements in or relating to electrical devices having hermetically sealed envelopes

Info

Publication number
GB1025723A
GB1025723A GB1718463A GB1718463A GB1025723A GB 1025723 A GB1025723 A GB 1025723A GB 1718463 A GB1718463 A GB 1718463A GB 1718463 A GB1718463 A GB 1718463A GB 1025723 A GB1025723 A GB 1025723A
Authority
GB
United Kingdom
Prior art keywords
envelope
discharge lamp
hermetically sealed
tube
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
Application number
GB1718463A
Inventor
Sydney Alfred Richard Rigden
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1718463A priority Critical patent/GB1025723A/en
Publication of GB1025723A publication Critical patent/GB1025723A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/04—Vessels or containers characterised by the material thereof

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1,025,723. Electric discharge tubes. GENERAL ELECTRIC CO. Ltd. Feb. 26, 1964 [May 1, 1963], No. 17184/63. Heading H1D. In an electrical device having an hermetically sealed envelope, e.g. an incandescent lamp containing iodine and rare gas, or a metal vapour discharge lamp, at least the greater part of the wall of the envelope is provided by a single crystal of one or more refractory oxides. In particular, a synthetic alumina (corundum or sapphire) crystal may be ground to the shape of a rod and bored to form a tube having a length of 60 mm., an internal diameter of 6 mm. and a wall thickness of 0À8 mm. This tube may form a discharge lamp envelope, its ends being closed by electrode-supporting niobium caps sealed thereto by calcium aluminate. The discharge lamp may have a filling of sodium and argon at 20 mm. of Hg pressure, and may be mounted in a cylindrical glass outer jacket.
GB1718463A 1963-05-01 1963-05-01 Improvements in or relating to electrical devices having hermetically sealed envelopes Expired GB1025723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1718463A GB1025723A (en) 1963-05-01 1963-05-01 Improvements in or relating to electrical devices having hermetically sealed envelopes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1718463A GB1025723A (en) 1963-05-01 1963-05-01 Improvements in or relating to electrical devices having hermetically sealed envelopes

Publications (1)

Publication Number Publication Date
GB1025723A true GB1025723A (en) 1966-04-14

Family

ID=10090739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1718463A Expired GB1025723A (en) 1963-05-01 1963-05-01 Improvements in or relating to electrical devices having hermetically sealed envelopes

Country Status (1)

Country Link
GB (1) GB1025723A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1470569A1 (en) * 2002-01-28 2004-10-27 Gem Lighting LLC High intensity discharge lamp with single crystal sapphire envelope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1470569A1 (en) * 2002-01-28 2004-10-27 Gem Lighting LLC High intensity discharge lamp with single crystal sapphire envelope
EP1470569A4 (en) * 2002-01-28 2007-10-17 Gem Lighting Llc High intensity discharge lamp with single crystal sapphire envelope

Similar Documents

Publication Publication Date Title
GB1305065A (en)
GB1537104A (en) Arc-discharge devices
GB1178091A (en) Discharge Device
GB1143452A (en) Improvements in high pressure saturated vapor sodium lamp containing mercury
GB1401293A (en) Electric discharge lamps
GB1024848A (en) Electrical high-pressure discharge lamp
GB1252829A (en)
GB1428494A (en) Sodium vapour lamp having starting means
GB1186632A (en) Mercury Vapour Discharge Lamp
GB1253948A (en) Metal halide discharge lamp
GB1333272A (en) Wall-stabilised high-pressure mercury vapour discharge lamps
GB1330045A (en) Small-sized fluorescent lamp
GB1128504A (en) High pressure mercury vapour electric discharge tube
GB1039649A (en) Discharge lamp
GB1365648A (en) Flash discharge apparatus
GB1459006A (en) Cermaic discharge lamps
GB1130204A (en) Improvements in or relating to electric discharge lamps
GB1465212A (en) Electric discharge lamps
GB1370020A (en) Arc-discharge lamp
ES399456A1 (en) High pressure mercury vapour discharge lamp
GB1025723A (en) Improvements in or relating to electrical devices having hermetically sealed envelopes
GB1248157A (en) Metallic vapor arc-lamp
IE38771B1 (en) Improvements in electric discharge devices
GB1309337A (en) Arc tubes
GB978004A (en) Improvements in or relating to electric discharge devices