US2129016A - Multigrid tube - Google Patents

Multigrid tube Download PDF

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Publication number
US2129016A
US2129016A US52952A US5295235A US2129016A US 2129016 A US2129016 A US 2129016A US 52952 A US52952 A US 52952A US 5295235 A US5295235 A US 5295235A US 2129016 A US2129016 A US 2129016A
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United States
Prior art keywords
grids
tube
zags
zig
multigrid tube
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Expired - Lifetime
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US52952A
Inventor
Loewe Siegmund
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Individual
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Priority to US52952A priority Critical patent/US2129016A/en
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    • 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
    • H01J19/38—Control electrodes, e.g. grid
    • 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
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0015—Non-sealed electrodes

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  • Electrodes For Cathode-Ray Tubes (AREA)

Description

-Sept.6, 1938. s oE wE 2,129,016
MULTIGRID TUBE Original Filed June 16, 1933 Fig.3 Fig.4
- Jnvenfoh.
Patented Sept. 6, 1938 UNITED STATES PATENT OFFICE Original application June 16, 1933, Serial No.
676,039. Divided and this application Decemher 5, 1935, Serial No. 52,952. In Germany June 18, 1932 1 Claim.
Multi-grid tubes in which there are provided two control grids of equal effect (twin grids arranged in a plane or a cylinder), are already known. This application is a division of my prior 5 application 676,039, filed June 16, 1933.
According to the invention, these two grids are constructed so as to have increasing throughgrip in the direction of the length of the cathode. A form of embodiment of the grids in semi-cylin- 10 drical form according to the invention is illus- As shown, each grid consists of a wire bent to semi-circle-shaped sharp (Fig. 1) or meandrian (Fig. 2) zig-zags forming a semicylinder. The pitch of the zig-zags is increasing from one end to the other of the grids. Thus a variable throughgrip along the cathode is obtained and, as well known, a prolonged characteristic of the tube.
I claim:
A twin grid for electronic tubes consisting of two equal and symmetrically arranged semicylindrical grids, either of the grids consisting of a wire shaped in semicircle-formed zig-zags, the pitch of the zig-zags increasing along the axis of the grids.
SIEGMUND LOEWE.
US52952A 1933-06-16 1935-12-05 Multigrid tube Expired - Lifetime US2129016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US52952A US2129016A (en) 1933-06-16 1935-12-05 Multigrid tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67603933A 1933-06-16 1933-06-16
US52952A US2129016A (en) 1933-06-16 1935-12-05 Multigrid tube

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US2129016A true US2129016A (en) 1938-09-06

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US52952A Expired - Lifetime US2129016A (en) 1933-06-16 1935-12-05 Multigrid tube

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