FR802417A - Improvements to discharge tubes - Google Patents

Improvements to discharge tubes

Info

Publication number
FR802417A
FR802417A FR802417DA FR802417A FR 802417 A FR802417 A FR 802417A FR 802417D A FR802417D A FR 802417DA FR 802417 A FR802417 A FR 802417A
Authority
FR
France
Prior art keywords
discharge tubes
tubes
discharge
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
Other languages
French (fr)
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.)
Compagnie des Lampes
Original Assignee
Compagnie des Lampes
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 Compagnie des Lampes filed Critical Compagnie des Lampes
Application granted granted Critical
Publication of FR802417A publication Critical patent/FR802417A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/822—High-pressure mercury lamps
FR802417D 1935-02-26 1936-02-26 Improvements to discharge tubes Expired FR802417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8286A US2093892A (en) 1935-02-26 1935-02-26 Enclosed electric arc lamp

Publications (1)

Publication Number Publication Date
FR802417A true FR802417A (en) 1936-09-04

Family

ID=21730787

Family Applications (2)

Application Number Title Priority Date Filing Date
FR802417D Expired FR802417A (en) 1935-02-26 1936-02-26 Improvements to discharge tubes
FR47264D Expired FR47264E (en) 1935-02-26 1936-04-16 Improvements to discharge tubes

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR47264D Expired FR47264E (en) 1935-02-26 1936-04-16 Improvements to discharge tubes

Country Status (3)

Country Link
US (2) US2093892A (en)
FR (2) FR802417A (en)
GB (2) GB449862A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517223A (en) * 1948-08-23 1950-08-01 Allied Chem & Dye Corp Preparation of internally oxidized catalysts
US2965790A (en) * 1949-08-20 1960-12-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh High pressure gas lamp
US2969294A (en) * 1954-03-18 1961-01-24 James J Shyne Method of impregnating uranium in graphite
US2914402A (en) * 1957-02-26 1959-11-24 Bell Telephone Labor Inc Method of making sintered cathodes
US3271619A (en) * 1963-07-26 1966-09-06 Gen Electric Triggered vacuum discharge device
US3489602A (en) * 1965-05-25 1970-01-13 Hughes Aircraft Co Method of impregnating porous tungsten and resulting article
US3883766A (en) * 1973-07-19 1975-05-13 Gte Sylvania Inc Method of operating high-intensity arc discharge lamp
US4347022A (en) * 1978-10-02 1982-08-31 Precision Metal Fabricators, Inc. Air table system
GB2173944A (en) * 1985-04-18 1986-10-22 Noblelight Limited Construction of porous impregnated cathodes for discharge tubes
GB2173943A (en) * 1985-04-18 1986-10-22 Noblelight Limited Improvements in and relating to cathodes

Also Published As

Publication number Publication date
GB449862A (en) 1936-07-06
US2121637A (en) 1938-06-21
US2093892A (en) 1937-09-21
GB462500A (en) 1937-03-10
FR47264E (en) 1937-03-05

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