GB439957A - Improvements in and relating to gas or vapour filled electric discharge apparatus - Google Patents

Improvements in and relating to gas or vapour filled electric discharge apparatus

Info

Publication number
GB439957A
GB439957A GB17652/34A GB1765234A GB439957A GB 439957 A GB439957 A GB 439957A GB 17652/34 A GB17652/34 A GB 17652/34A GB 1765234 A GB1765234 A GB 1765234A GB 439957 A GB439957 A GB 439957A
Authority
GB
United Kingdom
Prior art keywords
grid
grids
cathode
discharge
gas
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
GB17652/34A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB439957A publication Critical patent/GB439957A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens

Landscapes

  • Electrostatic Separation (AREA)

Abstract

439,957. Discharge devices. SIEMENS-SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. June 14, 1934, No. 17652. Convention date, Aug. 15, 1933. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 15, 1934.] [Class 39 (i)] An arc in a gas- or vapour-filled discharge device is extinguished by means of a number of control grids to which a negative potential is applied, the distance between the grids being equal to, or less than, the mesh width, or the distance between adjacent bars of each grid, and is also smaller than the length of the mean free path of the ions to ensure that the layers of ions around the grids overlap. The grids may consist of rods, wires or plates of round or oblong cross-section. The Specification as open to inspection under Sect. 91 states also that the grid 5, Fig. 3 (Cancelled), nearest the cathode may be heated by means of the discharge, or the cathode or by a member 6 connected to a source of continuous- or alternating-current and is coated with alkaline earth metal. A discharge between the grid 5 and the anode 2 may be prevented by means of a negative potential applied to the grid 4 through a potentiometer 8, a separate battery, or through a resistance through which flows the grid current. The heated grid may consist of a plate provided with rectangular apertures across which are stretched heating wires. The control potential may be applied between the cathode and a tapping on the potentiometer 8. This subject-matter does not appear in the Specification as accepted.
GB17652/34A 1933-08-15 1934-06-14 Improvements in and relating to gas or vapour filled electric discharge apparatus Expired GB439957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE439957X 1933-08-15

Publications (1)

Publication Number Publication Date
GB439957A true GB439957A (en) 1935-12-16

Family

ID=6507380

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17652/34A Expired GB439957A (en) 1933-08-15 1934-06-14 Improvements in and relating to gas or vapour filled electric discharge apparatus

Country Status (1)

Country Link
GB (1) GB439957A (en)

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