Glow discharge tube with a set of electrodes within a gas-sealed envelope

Patent metadata

Field	Value
Publication number	US-2023104635-A1
Application number	US-202117494443-A
Country	US
Kind code	A1
Filing date	Oct 5, 2021
Priority date	Oct 5, 2021
Publication date	Apr 6, 2023
Grant date	—

Abstract

A glow discharge tube comprising a gas-sealed envelope, a first electrode, and a second electrode. The gas-sealed envelope defining an interior with an interior surface defining a first interior portion with a first interior surface and a second interior portion with a second interior surface. The first electrode being located within the first interior portion, and the second electrode being located within and in contact with the second interior portion.

First claim

What is claimed is:

1 . A glow discharge tube comprising:
a gas-sealed envelope defining an interior with an interior surface defining a first interior portion with a first interior surface and a second interior portion with a second interior surface; a first electrode having a first portion with a first exterior surface located within the first interior portion; and a second electrode having a second portion with a second exterior surface located within the second interior portion and at least a portion of the second exterior surface is in contact with the second interior surface.

2 . The glow discharge tube of claim 1 wherein the first portion terminates in a first end and the second portion terminates in a second end, confronting and spaced from the first end.

3 . The glow discharge tube of claim 2 , wherein at least one of the first end or the second end includes a non-planar topography.

4 . The glow discharge tube of claim 3 , wherein the second surface includes the non-planar topography.

5 . The glow discharge tube of claim 4 , wherein the first electrode is an anode and the second electrode is a cathode.

6 . The glow discharge tube of claim 3 , wherein the non-planar topography is at least one of a castellated topography, a wave form topography, a peaks and valleys topography, or a knurled topography.

7 . The glow discharge tube of claim 6 , wherein the non-planar topography is a knurled topography.

8 . The glow discharge tube of claim 6 , wherein the non-planar topography is a peaks and valleys topography.

9 . The glow discharge tube of claim 2 , wherein the first interior portion is defined by a first cross-sectional area normal to the first interior surface, and the second interior portion is defined by a second cross-sectional area normal to the second interior surface, with the first cross-sectional area being larger than the second cross-sectional area.

10 . The glow discharge tube of claim 1 , wherein the first exterior surface is spaced from the first interior surface to define a gap between the first electrode and the gas-sealed envelope.

11 . The glow discharge tube of claim 10 , wherein the gap is 0.1 mm.

12 . The glow discharge tube of claim 1 , wherein the first electrode and the second electrode are spaced a distance of between 3 mm and 6 mm from one another.

13 . The glow discharge tube of claim 1 , wherein the first electrode includes a first set of wires and the second electrode includes a second set of wires confronting the first set of wires, and wherein the first set of wires defines the first exterior surface and the second set of wires defines the second exterior surface.

14 . The glow discharge tube of claim 1 , wherein the first electrode is an anode and the second electrode is a cathode.

15 . The glow discharge tube of claim 1 , wherein at least one of the first electrode or the second electrode are operatively coupled to a power source which supplies a current to at least one of the first electrode or the second electrode to generate an electric field between the first electrode and the second electrode.

16 . The glow discharge tube of claim 15 , wherein the electric field can be between 10 and 20 Volts/micron.

17 . The glow discharge tube of claim 1 , wherein the gas-sealed envelope includes a dielectric glass.

18 . An ignition device, comprising:
a spark gap device comprising:
a first spark gap electrode;
a second spark gap electrode spaced from and opposing the first spark gap electrode; and
a glow discharge tube comprising:
a gas-sealed envelope defining an interior with an interior surface defining a first interior portion with a first interior surface and a second interior portion with a second interior surface;
a first electrode having a first portion with a first exterior surface located within the first interior portion; and
a second electrode having a second portion with a second exterior surface located within the second interior portion and at least a portion of the second exterior surface is in contact with the second interior surface.

19 . The ignition device of claim 18 , wherein the first electrode is an anode and the second electrode is a cathode, and at least a portion of the second electrode includes a non-planar topography.

20 . The ignition device of claim 19 , wherein the non-planar topography is at least one of a castellated topography, a wave form topography, a peaks and valleys topography, or a knurled topography.

Assignees

• Unison Ind Llc

Inventors

• Borja Juan P
• Michael Joseph Darryl
• Pittman Matthew Jason
• Desalvo Peter John
• Langenderfer Matthew Michael

Classifications

• H01T4/12

  hermetically sealed · CPC title

• H01T2/00 Primary

  Spark gaps comprising auxiliary triggering means (triggering circuits H01T15/00) · CPC title

• H01T15/00

  Circuits specially adapted for spark gaps, e.g. ignition circuits (ignition circuits for internal-combustion engines F02P; electric spark ignition for combustion apparatus F23Q; protection circuits using spark gaps H02H9/06) · CPC title

• H01J17/44

  having one or more control electrodes · CPC title

• H01T1/20 Primary

  Means for starting arc or facilitating ignition of spark gap · CPC title