GB1034024A - Mercury vapour enclosures - Google Patents

Mercury vapour enclosures

Info

Publication number
GB1034024A
GB1034024A GB16693/65A GB1669365A GB1034024A GB 1034024 A GB1034024 A GB 1034024A GB 16693/65 A GB16693/65 A GB 16693/65A GB 1669365 A GB1669365 A GB 1669365A GB 1034024 A GB1034024 A GB 1034024A
Authority
GB
United Kingdom
Prior art keywords
mercury vapour
pyrophosphate
mercury
vapour
april
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
GB16693/65A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB1034024A publication Critical patent/GB1034024A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/22—Means for obtaining or maintaining the desired pressure within the tube
    • H01J17/26—Means for producing, introducing, or replenishing gas or vapour during operation of the tube
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels

Abstract

1,034,024. Metal-vapour discharge tubes. CSF.-COMPAGNIE GENERALE DE TELEGRAPHIC SANS FIL. April 21, 1965 [April 29, 1964], No. 16693/65. Heading H1D. Mercury vapour is liberated within an evacuated enclosure by heating a substance composed at least in part of mercury pyrophosphate (Hg 2 P 2 O 7 ). The enclosure may be the envelope of any mercury vapour discharge tube, e.g. a thyratron or lamp. In Fig. 2 (not shown) the pyrophosphate is contained in a vessel 4 composed of two dishes welded together at spaced points and attached to one of the rods 3 supporting the electrode system 2 of a discharge tube. Degassing at temperatures below about 600‹ C. releases substantially no mercury vapour. Heating to temperatures between 600‹ and 800‹ C., e.g. by high frequency currents, releases the mercury vapour. If a temperature of 750‹ C. is to be exceeded a reducing substance, e.g. powdered aluminium, aluminium and magnesium alloy, titanium, zirconium or columbium is mixed with the pyrophosphate to prevent the release of oxygen.
GB16693/65A 1964-04-29 1965-04-21 Mercury vapour enclosures Expired GB1034024A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR972773A FR1402090A (en) 1964-04-29 1964-04-29 Improvements to mercury vapor tubes

Publications (1)

Publication Number Publication Date
GB1034024A true GB1034024A (en) 1966-06-29

Family

ID=8828956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16693/65A Expired GB1034024A (en) 1964-04-29 1965-04-21 Mercury vapour enclosures

Country Status (6)

Country Link
US (1) US3401296A (en)
CH (1) CH420393A (en)
DE (1) DE1258984B (en)
FR (1) FR1402090A (en)
GB (1) GB1034024A (en)
NL (1) NL6505544A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5500567A (en) * 1994-02-10 1996-03-19 General Electric Company Apparatus for securing an amalgam at the apex of an electrodeless fluorescent lamp

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605036A (en) * 1967-10-17 1971-09-14 Laser Sciences Inc Method and apparatus for thermochemically controlling the gas atmosphere of a gas coherent radiation generator
US3722976A (en) * 1970-10-07 1973-03-27 Getters Spa Mercury generation
US4553067A (en) * 1982-02-10 1985-11-12 Gte Products Corporation Method of dispensing mercury into a fluorescent lamp and lamp to operate with method
US5026311A (en) * 1983-03-10 1991-06-25 Gte Products Corporation Arc tube fabrication process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE916552C (en) * 1943-12-09 1954-08-12 Patra Patent Treuhand Process for introducing mercury into electrical discharge vessels
NL98429C (en) * 1954-05-28
GB967685A (en) * 1962-03-28 1964-08-26 Hivac Ltd Improvements in or relating to gas discharge tubes
FR1351908A (en) * 1962-03-28 1964-02-07 Hivac Ltd Development of cold cathode discharge tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5500567A (en) * 1994-02-10 1996-03-19 General Electric Company Apparatus for securing an amalgam at the apex of an electrodeless fluorescent lamp

Also Published As

Publication number Publication date
DE1258984B (en) 1968-01-18
FR1402090A (en) 1965-06-11
NL6505544A (en) 1965-11-01
CH420393A (en) 1966-09-15
US3401296A (en) 1968-09-10

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