GB419866A - Improvements in gasfilled electric discharge tubes - Google Patents

Improvements in gasfilled electric discharge tubes

Info

Publication number
GB419866A
GB419866A GB14546/34A GB1454634A GB419866A GB 419866 A GB419866 A GB 419866A GB 14546/34 A GB14546/34 A GB 14546/34A GB 1454634 A GB1454634 A GB 1454634A GB 419866 A GB419866 A GB 419866A
Authority
GB
United Kingdom
Prior art keywords
electrode
discharge
electric discharge
discharge tubes
gasfilled
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
GB14546/34A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB419866A publication Critical patent/GB419866A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode

Abstract

419,866. Discharge devices. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. May 14, 1934, No. 14546. Convention date, June 2, 1933. [Class 39 (i).] A discharge device is provided with a filling of gas or vapour or a mixture thereof, and with a filamentary incandescent electrode 5 which is heated solely by the discharge during normal operation, the said electrode being wound in a bifilar manner and so located that its centre is turned towards the discharge path. The electrode is coated with barium oxide and is provided with two leading-in wires which are normally connected together, but may be used to heat the said electrode during manufacture. Preferably, both electrodes are similarly constructed.
GB14546/34A 1933-06-02 1934-05-14 Improvements in gasfilled electric discharge tubes Expired GB419866A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL419866X 1933-06-02

Publications (1)

Publication Number Publication Date
GB419866A true GB419866A (en) 1934-11-20

Family

ID=19786057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14546/34A Expired GB419866A (en) 1933-06-02 1934-05-14 Improvements in gasfilled electric discharge tubes

Country Status (4)

Country Link
DE (1) DE639117C (en)
FR (1) FR773176A (en)
GB (1) GB419866A (en)
NL (1) NL39995C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756994A (en) * 1953-10-19 1956-07-31 Littell Machine Co F J Intermittent feeding and cutting machine with variating means
GB2192751A (en) * 1986-07-14 1988-01-20 Denki Kagaku Kogyo Kk Thermionic cathode structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756994A (en) * 1953-10-19 1956-07-31 Littell Machine Co F J Intermittent feeding and cutting machine with variating means
GB2192751A (en) * 1986-07-14 1988-01-20 Denki Kagaku Kogyo Kk Thermionic cathode structure
US4878866A (en) * 1986-07-14 1989-11-07 Denki Kagaku Kogyo Kabushiki Kaisha Thermionic cathode structure
GB2192751B (en) * 1986-07-14 1991-02-13 Denki Kagaku Kogyo Kk Method of making a thermionic cathode structure.

Also Published As

Publication number Publication date
FR773176A (en) 1934-11-13
DE639117C (en) 1936-11-28
NL39995C (en)

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