US2164910A - Electronic discharge tube - Google Patents
Electronic discharge tube Download PDFInfo
- Publication number
- US2164910A US2164910A US120894A US12089437A US2164910A US 2164910 A US2164910 A US 2164910A US 120894 A US120894 A US 120894A US 12089437 A US12089437 A US 12089437A US 2164910 A US2164910 A US 2164910A
- Authority
- US
- United States
- Prior art keywords
- discharge tube
- vessel
- melting
- electronic discharge
- skirt
- 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 - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/20—Seals between parts of vessels
- H01J5/22—Vacuum-tight joints between parts of vessel
- H01J5/26—Vacuum-tight joints between parts of vessel between insulating and conductive parts of vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0037—Solid sealing members other than lamp bases
- H01J2893/0041—Direct connection between insulating and metal elements, in particular via glass material
Definitions
- vmfacTRoNIc DISCHARGE TUBE Filed Jan. 16, 1957 @rvu-'wv Patented July 4, 1939 UNITED STATES PATENT OFFICE ELECTRONIC DISCHARGE TUBE Alfred Gaebel, Berlin,
- the invention relates to electronic discharge valves or tubes of the kind in which an electrode or several electrodes are formed integral with a portion located outside the .discharge Vessel and united with the wall thereof.
- the invention obviates this by so constructing the electrodes that the path from the melting spot to the main body of the electrodes shall be as large as possible.
- A denotes the anode, K the cathode, G the grid which in the case represented by way of example is a wire helix whose turns E, F are supported by shanks E, F in a well known manner. These are fastened in a socket 3 of a metal Adisc B, this disc thus supporting the grid G by means of the shanks E1, F.
- Cathode K is arranged to extend through socket 3.
- Anode A has cooling fins W the two outer of which are each integral with a ring P.
- the discharge vessel D is composed of ceramic portions Wl, W2, W3 and a glass top U.
- the portions Wl, W2 are held together by a metal ring Q. Equally, the portions W2, W3 are held together with the aid of the two rings P.
- Portion U is provided with a tubular extension u. where the vessel is connected with the pump and where it is sealed off, as is well known with devices of this kind. Glass portion U is united with the ceramic portion W3 by melting.
- the ceramic portions WI W2, W3 are shaped outside by grinding so as to intimately contact with the rings P, Q.
- the airtightness afforded in this way is raised to vacuum tightness by melting glass or a ceramic glazing or the like onto the telescopic or lap joints so as to produce melting spots S.
- Ring Q may form one coating of a condenser C whose other coating is a metal ring 2, an annular dielectric 4 being arranged between the two.
- the invention provides for the path between the spots S and the main body or active part of the electrodes being calculated to be as large as possible. This is only shown in connection with the anode A since among the electrodes of a discharge tube body through said (Cl. Z-27.5)
- the anode is of the largest quantity of metal. It is to be understood however that the invention is applicable to other electrodes too.
- the said path is formed by the rings P and the cooling 1in W integral therewith, thus being long enough to prevent the heat from being carried away to an extent that would impair the effect of the melting.
- An electronic discharge tube comprising two hollow tubular vessels of ceramic material disposed end to end to enclose a cavity, a metal body adapted to act as an electrode disposed in said cavity, two metallic disk-like flanges united with said electrode and extending outwardly therefrom beyond the periphery of said vessels, a metallic skirt united with each of said flanges and extending along the outer surface of one of said vessels to an annular sealing zone on said outer surface, and a fused seal along each said zone between said ceramic vessel and said skirt, the length of the metallic path from said body through said flange and said skirt to said sealing zone being sufliciently great in relation to the thickness of said flange and skirt to reduce the heat conductance between said sealing zone and said body to a value which permits the rapid heating of said sealing zone.
- An electronic discharge tube comprising a vessel of ceramic material, a metal body adapted to act as an electrode disposed in said vessel, a metallic disk-like flange united with said electrode and extending outwardly therefrom beyond the periphery of said vessel, a metallic skirt united with said flange and extending along the outer surface of said vessel to an annular sealing zone on said outer surface, and a fused seal along said zone between said ceramic vessel and said skirt, the length of the metallic path from said flange and said skirt to said sealing zone being sufficiently great in relation to the thickness of said flange and skirt to reduce the heat conductance between said sealing zone and said body to a value which permits the rapid heating of said sealing zone.
- An electron discharge tube according to claim 2 wherein said electrode is provided with at least one cooling iin extending from said body into the space exterior to said cavity intermediate said two metallic flanges.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Lasers (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Laser Beam Processing (AREA)
Description
July 4, 1939. A; GAI-:BEL ET Al.
vmfacTRoNIc: DISCHARGE TUBE Filed Jan. 16, 1957 @rvu-'wv Patented July 4, 1939 UNITED STATES PATENT OFFICE ELECTRONIC DISCHARGE TUBE Alfred Gaebel, Berlin,
Berlin-Lichterfelde, Germany,
and Annemarie Katsch,
assignors to C.
Lorenz Aktiengesellschaft, Berlin-Tempelhof, Lorenzweg, Germany, a company 3 Claims.
The invention relates to electronic discharge valves or tubes of the kind in which an electrode or several electrodes are formed integral with a portion located outside the .discharge Vessel and united with the wall thereof.
When melting glass or a ceramic glazing or the like onto the butt joint which there is between such an electrode portion and the wall of the vessel, difculty is encountered by the electrode carrying away the heat from the melting spot in a manner to impair the effect of melting.
The invention obviates this by so constructing the electrodes that the path from the melting spot to the main body of the electrodes shall be as large as possible.
One embodiment of the invention is described hereafter, reference being had to the accompanying drawing that shows a partially diagrammatic sectional view thereof.
In this drawing, A denotes the anode, K the cathode, G the grid which in the case represented by way of example is a wire helix whose turns E, F are supported by shanks E, F in a well known manner. These are fastened in a socket 3 of a metal Adisc B, this disc thus supporting the grid G by means of the shanks E1, F. Cathode K is arranged to extend through socket 3. Anode A has cooling fins W the two outer of which are each integral with a ring P.
The discharge vessel D is composed of ceramic portions Wl, W2, W3 and a glass top U. The portions Wl, W2 are held together by a metal ring Q. Equally, the portions W2, W3 are held together with the aid of the two rings P. Portion U is provided with a tubular extension u. where the vessel is connected with the pump and where it is sealed off, as is well known with devices of this kind. Glass portion U is united with the ceramic portion W3 by melting.
In order to provide for airtightness the ceramic portions WI W2, W3 are shaped outside by grinding so as to intimately contact with the rings P, Q. The airtightness afforded in this way is raised to vacuum tightness by melting glass or a ceramic glazing or the like onto the telescopic or lap joints so as to produce melting spots S.
Ring Q, or any other ring of similar disposition, may form one coating of a condenser C whose other coating is a metal ring 2, an annular dielectric 4 being arranged between the two.
In order now to avoid that during the process of producing the melting spots S too much heat is carried away by the electrodes concerned, the invention provides for the path between the spots S and the main body or active part of the electrodes being calculated to be as large as possible. This is only shown in connection with the anode A since among the electrodes of a discharge tube body through said (Cl. Z-27.5)
the anode is of the largest quantity of metal. It is to be understood however that the invention is applicable to other electrodes too.
In the example represented the said path is formed by the rings P and the cooling 1in W integral therewith, thus being long enough to prevent the heat from being carried away to an extent that would impair the effect of the melting.
In this way the flow of heat from the melting spots S is so reduced that the melting can be effected in a quick and reliable manner and that therefore the lap joints between the rings P and vessel D will not be subjected to unnecessary or harmful high temperatures.
What is claimed is:
l. An electronic discharge tube comprising two hollow tubular vessels of ceramic material disposed end to end to enclose a cavity, a metal body adapted to act as an electrode disposed in said cavity, two metallic disk-like flanges united with said electrode and extending outwardly therefrom beyond the periphery of said vessels, a metallic skirt united with each of said flanges and extending along the outer surface of one of said vessels to an annular sealing zone on said outer surface, and a fused seal along each said zone between said ceramic vessel and said skirt, the length of the metallic path from said body through said flange and said skirt to said sealing zone being sufliciently great in relation to the thickness of said flange and skirt to reduce the heat conductance between said sealing zone and said body to a value which permits the rapid heating of said sealing zone.
2. An electronic discharge tube comprising a vessel of ceramic material, a metal body adapted to act as an electrode disposed in said vessel, a metallic disk-like flange united with said electrode and extending outwardly therefrom beyond the periphery of said vessel, a metallic skirt united with said flange and extending along the outer surface of said vessel to an annular sealing zone on said outer surface, and a fused seal along said zone between said ceramic vessel and said skirt, the length of the metallic path from said flange and said skirt to said sealing zone being sufficiently great in relation to the thickness of said flange and skirt to reduce the heat conductance between said sealing zone and said body to a value which permits the rapid heating of said sealing zone.
3. An electron discharge tube according to claim 2 wherein said electrode is provided with at least one cooling iin extending from said body into the space exterior to said cavity intermediate said two metallic flanges.
ANNEMARIE KATSCH. ALFRED GAEBEL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE488870X | 1936-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2164910A true US2164910A (en) | 1939-07-04 |
Family
ID=6543871
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US120895A Expired - Lifetime US2189906A (en) | 1936-01-16 | 1937-01-16 | Electronic discharge tube |
US120894A Expired - Lifetime US2164910A (en) | 1936-01-16 | 1937-01-16 | Electronic discharge tube |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US120895A Expired - Lifetime US2189906A (en) | 1936-01-16 | 1937-01-16 | Electronic discharge tube |
Country Status (5)
Country | Link |
---|---|
US (2) | US2189906A (en) |
AT (2) | AT151143B (en) |
FR (1) | FR816185A (en) |
GB (1) | GB488870A (en) |
NL (1) | NL45935C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2430856A (en) * | 1946-01-26 | 1947-11-18 | Gen Electric | Electric discharge device |
US2443605A (en) * | 1941-06-26 | 1948-06-22 | Hartford Nat Bank & Trust Co | Insulated casing |
US2460132A (en) * | 1943-11-10 | 1949-01-25 | Gen Electric | Electrical discharge device |
US2812466A (en) * | 1953-06-08 | 1957-11-05 | Eitel Mccullough Inc | Ceramic electron tube |
US2907911A (en) * | 1956-01-16 | 1959-10-06 | Gen Electric | Electron discharge device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE748304C (en) * | 1937-12-28 | 1953-06-22 | Telefunken Gmbh | Ultra short wave tubes with artificially cooled anode |
US2562820A (en) * | 1950-03-15 | 1951-07-31 | Avco Mfg Corp | Electron tube structure |
-
0
- NL NL45935D patent/NL45935C/xx active
-
1936
- 1936-12-29 AT AT151143D patent/AT151143B/en active
- 1936-12-29 AT AT158316D patent/AT158316B/en active
-
1937
- 1937-01-09 FR FR816185D patent/FR816185A/en not_active Expired
- 1937-01-15 GB GB1301/37A patent/GB488870A/en not_active Expired
- 1937-01-16 US US120895A patent/US2189906A/en not_active Expired - Lifetime
- 1937-01-16 US US120894A patent/US2164910A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2443605A (en) * | 1941-06-26 | 1948-06-22 | Hartford Nat Bank & Trust Co | Insulated casing |
US2460132A (en) * | 1943-11-10 | 1949-01-25 | Gen Electric | Electrical discharge device |
US2430856A (en) * | 1946-01-26 | 1947-11-18 | Gen Electric | Electric discharge device |
US2812466A (en) * | 1953-06-08 | 1957-11-05 | Eitel Mccullough Inc | Ceramic electron tube |
US2907911A (en) * | 1956-01-16 | 1959-10-06 | Gen Electric | Electron discharge device |
Also Published As
Publication number | Publication date |
---|---|
NL45935C (en) | |
US2189906A (en) | 1940-02-13 |
FR816185A (en) | 1937-08-02 |
AT151143B (en) | 1937-10-25 |
AT158316B (en) | 1940-03-26 |
GB488870A (en) | 1938-07-15 |
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