GB538684A - Cathode ray tubes - Google Patents

Cathode ray tubes

Info

Publication number
GB538684A
GB538684A GB2670/40A GB267040A GB538684A GB 538684 A GB538684 A GB 538684A GB 2670/40 A GB2670/40 A GB 2670/40A GB 267040 A GB267040 A GB 267040A GB 538684 A GB538684 A GB 538684A
Authority
GB
United Kingdom
Prior art keywords
electron beam
cathode
barrier
ray tubes
ions
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
GB2670/40A
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.)
Philco Radio and Television Corp
Original Assignee
Philco Radio and Television Corp
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 claimed from US258488A external-priority patent/US2274586A/en
Application filed by Philco Radio and Television Corp filed Critical Philco Radio and Television Corp
Publication of GB538684A publication Critical patent/GB538684A/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
    • H01J29/845—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection by means of magnetic systems

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Electron Tubes For Measurement (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

538,684. Cathode-ray tubes. PHILCO RADIO & TELEVISION CORPORATION. Feb. 12, 1940, No. 2670. Convention date, Feb. 25, 1939. [Class 39 (i)] In cathode-ray tubes the formation of a black spot by negative ions on the fluorescent screen is prevented by separating the ions from the electron beam by means of magnetic deflection the electron beam being focused to minimum diameter to pass through an orifice in a barrier on which the ions impinge. The composite ion and electron beam may be acted on by an electrostatic field produced by plates 12, 13, Fig. 1, to deflect it as a whole the electrons being returned to their original path by a magnetic field H ; or only a magnetic field H, Fig. 3, may be used for the separation, the electron beam 15a passing through the orifice 8 in the barrier 11, which forms part of a gun tilted in the cathode-ray tube. To shorten the focusing system diaphragms 27, 28, Fig. 5, may be interposed between the anode 26 and tube 7 in which supports the barrier 11. The Specification as open to inspection under Sect. 91 also describes an arrangement wherein the negative ions impinge on the wall of the envelope. This subject-matter does not appear in the Specification as accepted.
GB2670/40A 1936-08-14 1940-02-12 Cathode ray tubes Expired GB538684A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US95970A US2211613A (en) 1936-08-14 1936-08-14 Cathode ray tube
US150034A US2211614A (en) 1936-08-14 1937-06-24 Cathode ray tube and the like
US258488A US2274586A (en) 1939-02-25 1939-02-25 Cathode ray tube

Publications (1)

Publication Number Publication Date
GB538684A true GB538684A (en) 1941-08-13

Family

ID=32074217

Family Applications (2)

Application Number Title Priority Date Filing Date
GB31145/37A Expired GB505632A (en) 1936-08-14 1937-11-12 Improvements in and relating to cathode-ray tubes
GB2670/40A Expired GB538684A (en) 1936-08-14 1940-02-12 Cathode ray tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB31145/37A Expired GB505632A (en) 1936-08-14 1937-11-12 Improvements in and relating to cathode-ray tubes

Country Status (2)

Country Link
US (2) US2211613A (en)
GB (2) GB505632A (en)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733365A (en) * 1956-01-31 hoagland
DE744709C (en) * 1940-12-06 1944-01-24 Aeg Braun tubes for operation with high voltages
US2629866A (en) * 1942-09-19 1953-02-24 Robert M Page Position indicating apparatus
US2440735A (en) * 1943-06-05 1948-05-04 Farnsworth Res Corp Electrooptical device
DE969907C (en) * 1944-07-15 1958-07-31 Fernseh Gmbh Arrangement for preventing positive ions from striking the cathode of cathode ray tubes
DE838168C (en) * 1944-12-28 1952-03-27 A. C. Cossor Limited, London cathode ray tube
BE470212A (en) * 1946-01-24
US2460609A (en) * 1946-01-24 1949-02-01 Rca Corp Beam aligning apparatus
US2563490A (en) * 1946-01-28 1951-08-07 Cathode arrangement fob television
US2456474A (en) * 1946-07-02 1948-12-14 Gen Electric Electric discharge device
US2531050A (en) * 1946-11-30 1950-11-21 Sylvania Electric Prod Ion trap
US2496127A (en) * 1947-02-05 1950-01-31 Rca Corp Electron gun for cathode-ray tubes
US2555850A (en) * 1948-01-28 1951-06-05 Nicholas D Glyptis Ion trap
US2575067A (en) * 1948-05-13 1951-11-13 Clarostat Mfg Co Inc 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
US2553039A (en) * 1949-04-26 1951-05-15 Zenith Radio Corp Cathode-ray tube combined beam centering and deflection device
US2569517A (en) * 1949-09-09 1951-10-02 Du Mont Allen B Lab Inc Magnet for cathode-ray tube ion traps
US2549602A (en) * 1949-10-01 1951-04-17 Indiana Steel Products Co Applicator for ion traps
US2553792A (en) * 1949-10-01 1951-05-22 Indiana Steel Products Co Ion trap and centering magnet assembly
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
NL157537B (en) * 1949-11-25 Calsilox Sa METHOD AND DEVICE FOR FIXING REINFORCEMENT IN A FORM.
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
US2544898A (en) * 1949-12-31 1951-03-13 Guardian Electric Mfg Co Centering device for beams of cathode-ray tubes
BE502471A (en) * 1950-04-12
US2596508A (en) * 1950-04-19 1952-05-13 Rauland Corp Electron gun for cathode-ray tubes
BE502947A (en) * 1950-05-02
US2565533A (en) * 1950-05-19 1951-08-28 Rauland Corp Cathode-ray tube
US2562236A (en) * 1950-06-06 1951-07-31 Du Mont Allen B Lab Inc Support strap for cathode-ray tube gun parts
US2562242A (en) * 1950-06-06 1951-07-31 Du Mont Allen B Lab Inc Split anode for bent gun ion trap cathode-ray tubes
US2562243A (en) * 1950-06-06 1951-07-31 Du Mont Allen B Lab Inc Electron gun structure
US2542924A (en) * 1950-06-21 1951-02-20 Myron R Heppner Ion trap
US2695975A (en) * 1950-09-23 1954-11-30 Du Mont Allen B Lab Inc Television deflection circuit
NL158486B (en) * 1951-01-11 Pfizer PROCESS FOR THE PREPARATION OF PETROL-SUBSTITUTED PHENYLCARBAMATES AND FOR THE PREPARATION OF INSECTICIDE PREPARATIONS CONTAINING THEY.
US2718610A (en) * 1951-02-01 1955-09-20 Guenther H Krawinkel Acceleration indicating system
US2597465A (en) * 1951-03-23 1952-05-20 Emmer Milton Beam deflector for cathode-ray tubes
US2760098A (en) * 1951-05-08 1956-08-21 Rca Corp Electrostatic focused gun for cathode ray tube
US2719243A (en) * 1951-07-03 1955-09-27 Du Mont Allen B Lab Inc Electrostatic electron lens
US2603550A (en) * 1951-07-12 1952-07-15 Philco Corp Method of aligning cathode-ray tube assemblies
US2824987A (en) * 1952-05-12 1958-02-25 Leitz Ernst Gmbh Electron optical elements and systems equivalent to light optical prisms for charge carriers in discharge vessels
US2707246A (en) * 1952-09-04 1955-04-26 Gen Electric Combination focusing-ion trap structures for cathode-ray tubes
US3036237A (en) * 1953-03-23 1962-05-22 Varian Associates Klystron electron tube apparatus
BE529845A (en) * 1953-06-25
US2937315A (en) * 1955-08-01 1960-05-17 Kaiser Ind Corp Electronic device
US2993141A (en) * 1958-02-10 1961-07-18 Richard F Post Producing bunched electron beams
US3226587A (en) * 1960-01-28 1965-12-28 Rca Corp Cathode ray tube and magnetic deflection means therefor
US3096438A (en) * 1961-04-24 1963-07-02 Rodger V Neidigh Apparatus for the mass analysis of plasmas on a continuous basis
US3087056A (en) * 1961-07-14 1963-04-23 Joseph J Murray High voltage electrodes
US4739218A (en) * 1985-04-18 1988-04-19 Schwartz Samuel A Short cathode ray tube
US6617779B1 (en) 2001-10-04 2003-09-09 Samuel A. Schwartz Multi-bend cathode ray tube

Also Published As

Publication number Publication date
US2211614A (en) 1940-08-13
GB505632A (en) 1939-05-12
US2211613A (en) 1940-08-13

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