GB1105222A - Processes and charges for filling discharge containers with mercury vapour - Google Patents

Processes and charges for filling discharge containers with mercury vapour

Info

Publication number
GB1105222A
GB1105222A GB870/66A GB87066A GB1105222A GB 1105222 A GB1105222 A GB 1105222A GB 870/66 A GB870/66 A GB 870/66A GB 87066 A GB87066 A GB 87066A GB 1105222 A GB1105222 A GB 1105222A
Authority
GB
United Kingdom
Prior art keywords
mercury
powdered
charge
granules
weight
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
GB870/66A
Inventor
Paolo Della Porta
Bruno Kindl
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 GB1105222A publication Critical patent/GB1105222A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
    • H01J7/183—Composition or manufacture of getters
    • 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

1,105,222. Filling and gettering discharge tubes. S.A.E.S. GETTERS S.p.A. 7 Jan., 1966 [8 Jan., 1965], No. 870/66. Heading H1D. A process for filling a discharge container with mercury vapour and for removing noxious gases employs the steps of placing a charge which consists of a powdered mercury compound and a powdered reducing agent on a supporting member within the container and, after a degassing treatment of the container, activating the charge by localized heating so as to induce a mercury evolving reaction, the powdered material of the reducing agent being only slightly active at the degassing temperature and having a grain size such as to comprise a fraction of fine granules and a fraction of relatively coarse granules. A preferred charge is powdered mercury oxide and powdered zirconium-aluminium alloy (84% Zr and 16% Al, by weight) contained in tablets in a weight ratio from 1: 2 to 1: 6, the mercury oxide having a grain size from 0-10 Á, and the alloy comprising 30% by weight of granules from 130-210 Á and 70% by weight of granules from 0-130 Á. The charge is placed on a support in the tube which is heated to outgassing temperature (about 360‹ C.) at which no reaction occurs. The tablet is then heated locally to about 800‹ C. at which mercury is evolved and the reducing agent absorbs other evolved gases. Thereafter the non-evaporable getter material is active for the lifetime of the tube.
GB870/66A 1965-06-08 1966-01-07 Processes and charges for filling discharge containers with mercury vapour Expired GB1105222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT31965 1965-06-08

Publications (1)

Publication Number Publication Date
GB1105222A true GB1105222A (en) 1968-03-06

Family

ID=11098590

Family Applications (1)

Application Number Title Priority Date Filing Date
GB870/66A Expired GB1105222A (en) 1965-06-08 1966-01-07 Processes and charges for filling discharge containers with mercury vapour

Country Status (4)

Country Link
US (1) US3385644A (en)
CH (1) CH455038A (en)
DE (1) DE1514658B1 (en)
GB (1) GB1105222A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1182150A (en) * 1966-12-13 1970-02-25 Getters Spa Alkali Metal Vapour Dispensers.
JPS4947512B1 (en) * 1969-09-29 1974-12-16
US3657589A (en) * 1969-10-20 1972-04-18 Getters Spa Mercury generation
CA1239980A (en) * 1983-03-10 1988-08-02 Gte Products Corporation Arc tube dosing process for unsaturated high pressure sodium lamp
US4988318A (en) * 1983-03-10 1991-01-29 Gte Products Corporation Unsaturated vapor high pressure sodium lamp arc tube fabrication process
US5898272A (en) * 1997-08-21 1999-04-27 Everbrite, Inc. Cathode for gas discharge lamp
DE10117365A1 (en) * 2001-04-06 2002-10-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Low-pressure discharge lamp
US9344451B2 (en) 2013-02-20 2016-05-17 Fastly, Inc. Enhanced thread handling in security handshaking

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB967685A (en) * 1962-03-28 1964-08-26 Hivac Ltd Improvements in or relating to gas discharge tubes
US3279877A (en) * 1963-12-31 1966-10-18 Westinghouse Electric Corp Method for processing high-pressure vapor-discharge arc tube

Also Published As

Publication number Publication date
US3385644A (en) 1968-05-28
CH455038A (en) 1968-04-30
DE1514658B1 (en) 1970-05-14

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