GB309733A - Improvements in or relating to electric discharge tubes - Google Patents

Improvements in or relating to electric discharge tubes

Info

Publication number
GB309733A
GB309733A GB1061328A GB1061328A GB309733A GB 309733 A GB309733 A GB 309733A GB 1061328 A GB1061328 A GB 1061328A GB 1061328 A GB1061328 A GB 1061328A GB 309733 A GB309733 A GB 309733A
Authority
GB
United Kingdom
Prior art keywords
cathode
screens
protects
tube
rays
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
GB1061328A
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
Priority to GB1061328A priority Critical patent/GB309733A/en
Priority to US333666A priority patent/US2056641A/en
Priority to FR669314D priority patent/FR669314A/en
Publication of GB309733A publication Critical patent/GB309733A/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
    • H01J61/92—Lamps with more than one main discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury

Landscapes

  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

309,733. Dicker, S. G. S., (Naamlooze. Vennootschap Philips' Gloeilampenfabrieken). April 10, 1928. Vacuum tubes; lowpressure metallic-vapour apparatus.-In incandescent - cathode discharge lamps for the emission of ultra-violet or other rays, screens are arranged to prevent the deposition of disintegrated cathode material on that part of the tube wall intended for the transmission of rays. In the device shown in Fig. 1 a screen 5 above the cathode 4 protects the wall 1, and in the device shown in Fig. 2, which is provided with an inner tube 12 for the circulation of a liquid to be sterilized, a cylindrical screen 22 around the cathode 19 protects the end of the tube 12. The screens may be connected to leading-in wires to enable them to be used as auxiliary starting-electrodes. The filling may consist of argon and mercury vapour.
GB1061328A 1928-03-24 1928-04-10 Improvements in or relating to electric discharge tubes Expired GB309733A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1061328A GB309733A (en) 1928-04-10 1928-04-10 Improvements in or relating to electric discharge tubes
US333666A US2056641A (en) 1928-03-24 1929-01-19 Electric discharge tube
FR669314D FR669314A (en) 1928-03-24 1929-02-07 Electric discharge tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1061328A GB309733A (en) 1928-04-10 1928-04-10 Improvements in or relating to electric discharge tubes

Publications (1)

Publication Number Publication Date
GB309733A true GB309733A (en) 1929-04-18

Family

ID=9971087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1061328A Expired GB309733A (en) 1928-03-24 1928-04-10 Improvements in or relating to electric discharge tubes

Country Status (1)

Country Link
GB (1) GB309733A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016555C1 (en) * 1990-05-23 1991-06-27 Alfred 7500 Karlsruhe De Graentzel Cooled UV-low pressure emitter esp. mercury vapour lamp - has extended discharge tube sub-divided into several longitudinal sections parallel to one another and bonded by means of elbows

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016555C1 (en) * 1990-05-23 1991-06-27 Alfred 7500 Karlsruhe De Graentzel Cooled UV-low pressure emitter esp. mercury vapour lamp - has extended discharge tube sub-divided into several longitudinal sections parallel to one another and bonded by means of elbows

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