GB642083A - Improvements relating to cathode ray tubes - Google Patents

Improvements relating to cathode ray tubes

Info

Publication number
GB642083A
GB642083A GB25964/44A GB2596444A GB642083A GB 642083 A GB642083 A GB 642083A GB 25964/44 A GB25964/44 A GB 25964/44A GB 2596444 A GB2596444 A GB 2596444A GB 642083 A GB642083 A GB 642083A
Authority
GB
United Kingdom
Prior art keywords
aperture
anode
cathode
grid
axis
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
GB25964/44A
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.)
AC Cossor Ltd
Original Assignee
AC Cossor Ltd
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
Priority to NL66519D priority Critical patent/NL66519C/xx
Priority to BE462028D priority patent/BE462028A/xx
Priority to DENDAT838168D priority patent/DE838168C/en
Application filed by AC Cossor Ltd filed Critical AC Cossor Ltd
Priority to GB25964/44A priority patent/GB642083A/en
Priority to US636454A priority patent/US2472766A/en
Priority to FR919431D priority patent/FR919431A/en
Publication of GB642083A publication Critical patent/GB642083A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/84—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Electron Tubes For Measurement (AREA)

Abstract

642,083. Cathode-ray tubes. COSSOR, Ltd., A. C., and WOODBRIDGE, L. A. Dec. 28, 1944, No. 25964. [Class 39 (i)] A cathode-ray tube has apertures in the anode or first anode and also preferably in the grid of the electron gun off-set to one side of the tube axis and magnetic field means for deflecting the beam to the desired path in order to prevent negative ions from reaching the fluorescent or other screen of the tube. In the construction shown the parallel rods 2 and spaced insulating discs 3 support the grid 5 with off-set aperture 12 in dished portion, the first anode 8 with off-set aperture 13, the cylindrical shield portion 9 and the anode diaphragm 10 with central aperture 14. A permanent or electromagnet is arranged to develop in the cylinder 6 a magnetic field for deflecting the electron beam into coincidence or parallelism with the axis 11-11 before it emerges from the aperture 14, the negative ions collecting on the inner wall 9 of the cylinder 6. The aperture 13 overlaps the aperture 12 in a direction parallel with the axis 11-11 and the cathode 4 and grid aperture 12 lie in or closely adjacent the plane of the supporting insulating disc 3 to avoid effects of tilting of the disc 3. Dimensions are given.
GB25964/44A 1944-12-28 1944-12-28 Improvements relating to cathode ray tubes Expired GB642083A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL66519D NL66519C (en) 1944-12-28
BE462028D BE462028A (en) 1944-12-28
DENDAT838168D DE838168C (en) 1944-12-28 cathode ray tube
GB25964/44A GB642083A (en) 1944-12-28 1944-12-28 Improvements relating to cathode ray tubes
US636454A US2472766A (en) 1944-12-28 1945-12-21 Cathode-ray tube
FR919431D FR919431A (en) 1944-12-28 1945-12-27 Cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25964/44A GB642083A (en) 1944-12-28 1944-12-28 Improvements relating to cathode ray tubes

Publications (1)

Publication Number Publication Date
GB642083A true GB642083A (en) 1950-08-30

Family

ID=10236168

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25964/44A Expired GB642083A (en) 1944-12-28 1944-12-28 Improvements relating to cathode ray tubes

Country Status (6)

Country Link
US (1) US2472766A (en)
BE (1) BE462028A (en)
DE (1) DE838168C (en)
FR (1) FR919431A (en)
GB (1) GB642083A (en)
NL (1) NL66519C (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733365A (en) * 1956-01-31 hoagland
US2555850A (en) * 1948-01-28 1951-06-05 Nicholas D Glyptis Ion trap
BE492805A (en) * 1948-12-21
US2522872A (en) * 1949-01-10 1950-09-19 Heppner Mfg Company Device for controlling the path of travel of electrons in cathoderay tubes
US2539156A (en) * 1949-01-19 1951-01-23 Tele Tone Radio Corp Ion trap magnet
US2552341A (en) * 1949-02-03 1951-05-08 Clarostat Mfg Co Inc Magnetic structure for use in ion-traps
US2499065A (en) * 1949-03-22 1950-02-28 Heppner Mfg Company Device for adjustably positioning spaced magnetic fields
US2569517A (en) * 1949-09-09 1951-10-02 Du Mont Allen B Lab Inc Magnet for cathode-ray tube ion traps
US2604599A (en) * 1949-09-17 1952-07-22 Sylvania Electric Prod Cathode-ray tube
US2580355A (en) * 1949-10-08 1951-12-25 Du Mont Allen B Lab Inc Ion trap magnet
US2552342A (en) * 1949-11-17 1951-05-08 Clarostat Mfg Co Inc Magnetic structure for use in ion-traps
US2744208A (en) * 1949-12-02 1956-05-01 Rca Corp Ion trap electron gun
US2564737A (en) * 1949-12-23 1951-08-21 Rauland Corp Cathode-ray tube
US2596508A (en) * 1950-04-19 1952-05-13 Rauland Corp Electron gun for cathode-ray tubes
US2565533A (en) * 1950-05-19 1951-08-28 Rauland Corp Cathode-ray tube
US2701320A (en) * 1950-05-26 1955-02-01 Rca Corp Electron gun structure and method for making the same
US2582402A (en) * 1950-09-29 1952-01-15 Rauland Corp Ion trap type electron gun
US2659826A (en) * 1951-01-24 1953-11-17 Failla Gioacchino Radiation measuring device
US2673305A (en) * 1951-05-31 1954-03-23 Rauland Corp Image-reproducing device
NL182593B (en) * 1952-11-07 Philips Nv MAGNETIC TAPE CASSETTE DEVICE.
BE526615A (en) * 1953-02-19
DE1114254B (en) * 1954-04-19 1961-09-28 Sylvania Electric Prod Electron tubes in which the disk-shaped electrodes are built up on two metallic retaining pins
US2913612A (en) * 1956-10-29 1959-11-17 Gen Electric Cathode ray tube
US3134919A (en) * 1961-01-04 1964-05-26 Gen Electric Stabilized electron gun

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137202A (en) * 1933-07-28 1938-11-15 Telefunken Gmbh Electron tube
US2211613A (en) * 1936-08-14 1940-08-13 Hygrade Sylvania Corp Cathode ray tube
BE426509A (en) * 1937-02-22
BE441294A (en) * 1939-12-22
BE480334A (en) * 1942-03-14
US2365006A (en) * 1942-07-24 1944-12-12 Ricketts Robert Eugene Cathode ray tube and light beam control means
US2348133A (en) * 1942-09-29 1944-05-02 Rca Corp Method and apparatus for developing electron beams

Also Published As

Publication number Publication date
BE462028A (en)
DE838168C (en) 1952-03-27
NL66519C (en)
FR919431A (en) 1947-03-07
US2472766A (en) 1949-06-07

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