GB389170A - Improvements in electric discharge devices - Google Patents

Improvements in electric discharge devices

Info

Publication number
GB389170A
GB389170A GB2990331A GB2990331A GB389170A GB 389170 A GB389170 A GB 389170A GB 2990331 A GB2990331 A GB 2990331A GB 2990331 A GB2990331 A GB 2990331A GB 389170 A GB389170 A GB 389170A
Authority
GB
United Kingdom
Prior art keywords
grid
envelope
spaced
mica
valve
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
GB2990331A
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.)
MO Valve Co Ltd
Original Assignee
MO Valve Co Ltd
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 MO Valve Co Ltd filed Critical MO Valve Co Ltd
Priority to GB2990331A priority Critical patent/GB389170A/en
Publication of GB389170A publication Critical patent/GB389170A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H01J19/48—Mountings for individual electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/32—Anodes
    • H01J19/34—Anodes forming part of the envelope
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0002—Construction arrangements of electrode systems
    • H01J2893/0003—Anodes forming part of vessel walls

Landscapes

  • Discharge Lamp (AREA)

Abstract

389,170. Thermionic valves. M-O VALVE CO., Ltd., Marconi House, Strand, London, EDEN, C. G. and SMITHELLS, C. J., c/o General Electric Co., Wembley, Middlesex. Oct. 28, 1931, No. 29903. [Class 39 (i).] In a valve in which one of the electrodes forms part of the envelope, one or more internal electrodes are spaced by members at each end adapted to fit inside and abut against the interior of the electrode forming part of the envelope or a part secured thereto. As shown, an outer grid 13 has a cap 12 provided with a wire projection 14, which passes through a hole in a mica spacer 15 fitting in the anode 1. The lower end of the grid 13 is secured to a metal cylinder 17 having tongues 18 bent back to form springs abutting against the glass portion 2 of the envelope, one 19 of the tongues being extended to form a connection to a lead. The inner grid 3 and an indirectly-heated cathode 6 are spaced from the outer grid 13 and from the cylinder 17 by mica distance pieces 5, 10 respectively. In another valve an indirectly heated cathode and a grid are spaced by mica distance pieces fitting inside an anode.
GB2990331A 1931-10-28 1931-10-28 Improvements in electric discharge devices Expired GB389170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2990331A GB389170A (en) 1931-10-28 1931-10-28 Improvements in electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2990331A GB389170A (en) 1931-10-28 1931-10-28 Improvements in electric discharge devices

Publications (1)

Publication Number Publication Date
GB389170A true GB389170A (en) 1933-03-16

Family

ID=10299066

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2990331A Expired GB389170A (en) 1931-10-28 1931-10-28 Improvements in electric discharge devices

Country Status (1)

Country Link
GB (1) GB389170A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739182C (en) * 1935-01-12 1943-09-14 Philips Patentverwaltung Process for the production of an indirectly heated cathode for electrical discharge tubes
DE768158C (en) * 1936-05-15 1959-08-13 Opta Radio Ag Arrangement to avoid insulation faults

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739182C (en) * 1935-01-12 1943-09-14 Philips Patentverwaltung Process for the production of an indirectly heated cathode for electrical discharge tubes
DE768158C (en) * 1936-05-15 1959-08-13 Opta Radio Ag Arrangement to avoid insulation faults

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