GB1316878A - Alkali metal vapour generators - Google Patents

Alkali metal vapour generators

Info

Publication number
GB1316878A
GB1316878A GB2445670A GB2445670A GB1316878A GB 1316878 A GB1316878 A GB 1316878A GB 2445670 A GB2445670 A GB 2445670A GB 2445670 A GB2445670 A GB 2445670A GB 1316878 A GB1316878 A GB 1316878A
Authority
GB
United Kingdom
Prior art keywords
conduit
container
alkali metal
chromate
metal vapour
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
GB2445670A
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.)
SAES Getters SpA
Original Assignee
SAES Getters SpA
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 SAES Getters SpA filed Critical SAES Getters SpA
Publication of GB1316878A publication Critical patent/GB1316878A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

1316878 Discharge tubes SAES GETTERS SpA 20 May 1970 [24 May 1969] 24456/70 Heading H1D An alkali metal vapour generator comprises a sealed evacuated container 11, at least one heat responsive source 12 of alkali metal vapour secured in the container, a conduit 15 having one end thereof secured around a part 20 of the container wall and the other end thereof arranged for connection with an evacuated vessel which is to be charged with an alkali metal vapour, and means 22 for rupturing the said part 20 of the container wall whereby an operation thereof after connection of the said other end of the conduit 15 with an evacuated vessel the interior of the container is put in communication with the interior of the evacuated vessel. The generator may be used to form photosensitive surfaces in photo-multiplier, image intensifier and television pick-up tubes, and in the form shown comprises three vapour sources (two 12 and 13 being shown). Source 12 consists of a tube 25 with a slit 27 and containing a mixture 26 of caesium chromate and an alloy of 84% Zr and 16% Al in a weight ratio of one part of chromate to five parts of alloy acting as a reducing agent. The ends of the tube are sealed by terminals 28 and 29 held in place by bands 30 and 31 to enable heating current to be passed through the tube. The other sources may contain potassium chromate and sodium chromate respectively. A non-evaporating getter 16 comprising a pleated substrate having particles of an alloy of 16% Al and 84% Zr embedded therein is disposed between the sources 12, 13 and the conduit 15 with the pleats at an angle to intercept noxious gas molecules following paths such as 35 and 36. The conduit 15 is closed by a nipple 20 having a groove 21 in which is seated a tungsten wire 22 with ends 23 twisted to form a closed loop which can be heated inductively to fracture the nipple 20. The container is exhausted to a pressure of 10<SP>-7</SP> torr. or less through a conduit 39 which is then sealed off.
GB2445670A 1969-05-24 1970-05-20 Alkali metal vapour generators Expired GB1316878A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1730369 1969-05-24

Publications (1)

Publication Number Publication Date
GB1316878A true GB1316878A (en) 1973-05-16

Family

ID=11150048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2445670A Expired GB1316878A (en) 1969-05-24 1970-05-20 Alkali metal vapour generators

Country Status (6)

Country Link
US (1) US3667513A (en)
JP (1) JPS4812666B1 (en)
DE (1) DE2024286A1 (en)
FR (1) FR2043651A1 (en)
GB (1) GB1316878A (en)
NL (1) NL7007435A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162681A (en) * 1984-06-08 1986-02-05 Philips Nv Electron emission devices and forming work function reducing layers thereon
GB2250752A (en) * 1990-10-12 1992-06-17 Custom Metalliz Serv Inc Cylindrical vapor source for vacuum metallizing containing through passage; radiant shield associated therewith

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904260A (en) * 1973-07-23 1975-09-09 Us Navy Method for producing magnetic resonance cells
NL7802116A (en) * 1977-03-14 1978-09-18 Getters Spa ALKALINE METAL VAPOR GENERATOR.
JPS54176171U (en) * 1978-06-02 1979-12-12
JPH01100847A (en) * 1987-10-12 1989-04-19 Stanley Electric Co Ltd Manufacture of metallic vapor discharge lamp
ITMI20042279A1 (en) * 2004-11-24 2005-02-24 Getters Spa ALKALINE METAL DISPENSER SYSTEM ABLE TO DELIVER HIGH QUANTITIES OF METALS

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757840A (en) * 1952-07-18 1956-08-07 Leitz Ernst Gmbh Method of and apparatus for evacuating vessels
NL6614205A (en) * 1966-10-08 1968-04-09

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162681A (en) * 1984-06-08 1986-02-05 Philips Nv Electron emission devices and forming work function reducing layers thereon
GB2250752A (en) * 1990-10-12 1992-06-17 Custom Metalliz Serv Inc Cylindrical vapor source for vacuum metallizing containing through passage; radiant shield associated therewith
GB2250752B (en) * 1990-10-12 1994-11-23 Custom Metalliz Serv Inc Vapor source for vacuum metallizing

Also Published As

Publication number Publication date
JPS4812666B1 (en) 1973-04-21
NL7007435A (en) 1970-11-26
US3667513A (en) 1972-06-06
DE2024286A1 (en) 1970-11-26
FR2043651A1 (en) 1971-02-19

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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