US2980317A - Vacuum device - Google Patents
Vacuum device Download PDFInfo
- Publication number
- US2980317A US2980317A US728175A US72817558A US2980317A US 2980317 A US2980317 A US 2980317A US 728175 A US728175 A US 728175A US 72817558 A US72817558 A US 72817558A US 2980317 A US2980317 A US 2980317A
- Authority
- US
- United States
- Prior art keywords
- getter
- cathode
- filament
- vacuum device
- helix
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/94—Burr-crushing or removing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
- H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
- H01J41/14—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of thermionic cathodes
- H01J41/16—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of thermionic cathodes using gettering substances
Definitions
- a glass vacuum vessel 1 an incandescent filament cathode 2 is mounted, said cathode being connected to a heating battery 23 via ducts 21 and 22.
- a getter helix 3 Surrounding the incandescent cathode 2 there is a getter helix 3, which is built self-supporting and can be heated directly via ducts 31 and 32 by the current derived from a second heating battery 33.
- This getter helix is located opposite cathode 2 and is maintained at a positive potential of 200 to 300 volts by means of a voltage source 34 and serves as electron collector for the ionization arrangement.
- getter material 4 in wire or strip form is placed about the getter wire.
- the getter material and the getter metal can be heated at once. Moreover, this heating serves for one-time or step-wise vaporization of the getter metal.
- a getter metal film 5 condensed on the glass wall 1 receives from the current source 52 a negative potential of 30 to volts relative to the cathode 2 via the duct 51.
- This getter film 5 serves as the ion collector for the ionization device.
- a magnetic field of 300 to 500 gauss can be provided parallel to the cathode with the aid of coil 6.
- the pumping occurs in such a manner that, after the pre-evacuation of the receptacle and pump and the outgassing of the getter and the getter metal, the getter metal is vaporized,
- a vacuum pumping device comprising a vacuumtight container, a getter coating on the inner wall of said container, an ofitake duct joined near one end of said container, a thermionically-emissive filament supported by and positioned Within said container, means to supply current to said filament, potential means for maintaining said getter coating on the wall of said container at a negative potential with respect to said filament, a getter helix having spaced turns surrounding said filament and carrying a getter material, and means for maintaining said getter helix at a positive potential with respect to said filament, whereby said getter helix serves both as a getter material carrier and source as well as an electron collector.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US728175A US2980317A (en) | 1957-02-27 | 1958-04-14 | Vacuum device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE358187X | 1957-02-27 | ||
US728175A US2980317A (en) | 1957-02-27 | 1958-04-14 | Vacuum device |
Publications (1)
Publication Number | Publication Date |
---|---|
US2980317A true US2980317A (en) | 1961-04-18 |
Family
ID=6290768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US728175A Expired - Lifetime US2980317A (en) | 1957-02-27 | 1958-04-14 | Vacuum device |
Country Status (4)
Country | Link |
---|---|
US (1) | US2980317A (fr) |
CH (1) | CH358187A (fr) |
DE (1) | DE1065561B (fr) |
GB (1) | GB862892A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3173048A (en) * | 1961-03-06 | 1965-03-09 | Varian Associates | Ion vacuum pump for magnetrons controlled for leakage of magnetron magnet |
US3339106A (en) * | 1965-05-28 | 1967-08-29 | Canadian Patents Dev | Ionization vacuum pump of the orbitron type having a porous annular grid electrode |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL256013A (fr) * | 1959-09-25 | |||
FR1281403A (fr) * | 1960-12-01 | 1962-01-12 | Thomson Houston Comp Francaise | Système perfectionné de pompe à vide du type à évaporation et à ionisation |
DE102009042417B4 (de) * | 2009-07-16 | 2011-11-24 | Vacom Steuerungsbau Und Service Gmbh | Orbitron-Ionengetterpumpe |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2636664A (en) * | 1949-01-28 | 1953-04-28 | Hertzler Elmer Afton | High vacuum pumping method, apparatus, and techniques |
US2727167A (en) * | 1952-04-18 | 1955-12-13 | Westinghouse Electric Corp | Ion pump |
US2726805A (en) * | 1953-01-29 | 1955-12-13 | Ernest O Lawrence | Ion pump |
US2755014A (en) * | 1953-04-24 | 1956-07-17 | Gen Electric | Ionic vacuum pump device |
US2796555A (en) * | 1954-06-29 | 1957-06-18 | High Voltage Engineering Corp | High-vacuum pump |
-
0
- DE DENDAT1065561D patent/DE1065561B/de active Pending
-
1958
- 1958-02-21 CH CH358187D patent/CH358187A/de unknown
- 1958-02-27 GB GB6431/58A patent/GB862892A/en not_active Expired
- 1958-04-14 US US728175A patent/US2980317A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2636664A (en) * | 1949-01-28 | 1953-04-28 | Hertzler Elmer Afton | High vacuum pumping method, apparatus, and techniques |
US2727167A (en) * | 1952-04-18 | 1955-12-13 | Westinghouse Electric Corp | Ion pump |
US2726805A (en) * | 1953-01-29 | 1955-12-13 | Ernest O Lawrence | Ion pump |
US2755014A (en) * | 1953-04-24 | 1956-07-17 | Gen Electric | Ionic vacuum pump device |
US2796555A (en) * | 1954-06-29 | 1957-06-18 | High Voltage Engineering Corp | High-vacuum pump |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3173048A (en) * | 1961-03-06 | 1965-03-09 | Varian Associates | Ion vacuum pump for magnetrons controlled for leakage of magnetron magnet |
US3339106A (en) * | 1965-05-28 | 1967-08-29 | Canadian Patents Dev | Ionization vacuum pump of the orbitron type having a porous annular grid electrode |
Also Published As
Publication number | Publication date |
---|---|
DE1065561B (fr) | |
GB862892A (en) | 1961-03-15 |
CH358187A (de) | 1961-11-15 |
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