GB440810A - Cathode ray tube - Google Patents

Cathode ray tube

Info

Publication number
GB440810A
GB440810A GB19947/34A GB1994734A GB440810A GB 440810 A GB440810 A GB 440810A GB 19947/34 A GB19947/34 A GB 19947/34A GB 1994734 A GB1994734 A GB 1994734A GB 440810 A GB440810 A GB 440810A
Authority
GB
United Kingdom
Prior art keywords
nickel
iron
ray tube
cathode ray
copper
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
GB19947/34A
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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
Application filed by Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB440810A publication Critical patent/GB440810A/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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/64—Magnetic lenses
    • H01J29/68—Magnetic lenses using permanent magnets only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/22—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of a single substantially straight conductive element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/918—Threadless nut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
    • Y10T29/49076—From comminuted material

Abstract

An electromagnet for use with a cathode-ray tube is constructed of material with high permeability and low hysteresis and eddy current losses; the magnetic material may be an alloy of aluminium, iron, and nickel, or of nickel, iron, and copper. The composition of the alloys may be as follows:-40 parts of nickel, 60 of iron, and 8-10 of copper, or 36 parts of nickel, 54 of iron, and up to 10 of copper.
GB19947/34A 1933-05-27 1934-07-07 Cathode ray tube Expired GB440810A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE440560X 1933-05-27
DE2185138X 1933-07-08

Publications (1)

Publication Number Publication Date
GB440810A true GB440810A (en) 1936-01-07

Family

ID=32070585

Family Applications (2)

Application Number Title Priority Date Filing Date
GB15780/34A Expired GB440560A (en) 1933-05-27 1934-05-28 Cathode ray tube, more particularly for television purposes
GB19947/34A Expired GB440810A (en) 1933-05-27 1934-07-07 Cathode ray tube

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB15780/34A Expired GB440560A (en) 1933-05-27 1934-05-28 Cathode ray tube, more particularly for television purposes

Country Status (3)

Country Link
US (2) US2188579A (en)
FR (2) FR773711A (en)
GB (2) GB440560A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750218C (en) * 1935-10-31 1945-01-04 Rca Corp Device for the electromagnetic deflection of a cathode ray bundle

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB462684A (en) * 1935-09-12 1937-03-12 Alfred Henry Gilbert Improvements in or relating to television and like apparatus
DE764441C (en) * 1937-04-17 1952-12-15 Telefunken Gmbh Cathode ray tubes, in particular for television purposes, with at least one magnetic deflection field
DE758547C (en) * 1939-02-11 1953-05-26 Telefunken Gmbh Magnetic electron lens
US2425125A (en) * 1940-07-20 1947-08-05 Hartford Nat Bank & Trust Co Cathode-ray tube with magnetic compensating means
BE472659A (en) * 1940-08-02
US2442975A (en) * 1943-08-31 1948-06-08 Rca Corp Focusing system
US2431077A (en) * 1943-08-31 1947-11-18 Rca Corp Cathode-ray tube with revolving magnets and adjustable sleeve
US2433682A (en) * 1944-10-31 1947-12-30 Philco Corp Electron focusing apparatus
US2578342A (en) * 1946-03-15 1951-12-11 Bell Telephone Labor Inc Deflection coil assembly
US2456474A (en) * 1946-07-02 1948-12-14 Gen Electric Electric discharge device
FR960167A (en) * 1947-02-19 1950-04-14
US2544934A (en) * 1947-06-14 1951-03-13 Superior Tube Co Ion trap and method of making it
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
GB670021A (en) * 1949-02-18 1952-04-09 Patrick Richard James Court Improvements in beam centering devices for cathode ray tubes
US2553039A (en) * 1949-04-26 1951-05-15 Zenith Radio Corp Cathode-ray tube combined beam centering and deflection device
US2544898A (en) * 1949-12-31 1951-03-13 Guardian Electric Mfg Co Centering device for beams of cathode-ray tubes
US2586463A (en) * 1950-07-07 1952-02-19 Rca Corp Electron beam deflection system
US2574039A (en) * 1951-02-17 1951-11-06 All Star Products Inc Magnetic centering device for cathode ray tubes
US2619607A (en) * 1951-03-10 1952-11-25 Glaser Steers Corp Internal focusing device
DE948787C (en) * 1951-06-21 1956-09-06 Max Grundig Electron-optical bandwidth control for television pictures reproduced point by point
NL170932B (en) * 1951-07-11 B & J Mfg Co DEVICE FOR FITTING AND REMOVING AN OUTER TIRE FROM A VEHICLE WHEEL, EQUIPPED WITH A COMPRESSED AIR SUPPLY CONSTRUCTION FOR AN INNER TIRE.
US2701321A (en) * 1951-07-16 1955-02-01 Sperry Corp Adjustable magnetic focusing system for beam tubes
US2681421A (en) * 1952-03-04 1954-06-15 Gen Electric Magnetic focusing structure for electron beams
US2664514A (en) * 1952-03-10 1953-12-29 All Star Products Inc Magnetic focusing mechanism
US2724021A (en) * 1952-10-06 1955-11-15 Magnescope Corp Cathode ray tube
US2707248A (en) * 1952-11-26 1955-04-26 Rca Corp Electromagnetic beam-convergence systems for tri-color kinescopes
US2965953A (en) * 1953-02-06 1960-12-27 Baermann Max Method of producing permanent magnets
NL87649C (en) * 1953-03-18
NL187895B (en) * 1953-06-17 Feldmuehle Ag DEVICE FOR DEININKING FIBER SUSPENSIONS.
US2769110A (en) * 1954-01-21 1956-10-30 Rca Corp Electron beam control means
US3053939A (en) * 1954-02-23 1962-09-11 Armour Res Found Electromagnetic transducer head
US2985791A (en) * 1958-10-02 1961-05-23 Hughes Aircraft Co Periodically focused severed traveling-wave tube
DE1090777B (en) * 1959-06-11 1960-10-13 Telefunken Gmbh Magnetic correction device for electron beam tubes, especially traveling wave tubes
NL278366A (en) * 1961-05-27
FR1330727A (en) * 1961-07-13 1963-06-28 Electronique & Physique Improvements to oscillograph tubes and similar electronic ray apparatus
US3217200A (en) * 1962-01-23 1965-11-09 Gen Electric Internal magnetic lens for electron beams
NL6510584A (en) * 1965-08-13 1967-02-14
US3694686A (en) * 1970-01-09 1972-09-26 Tokyo Shibaura Electric Co Unidirectional double deflection type cathode ray tube
NL7812540A (en) * 1978-12-27 1980-07-01 Philips Nv CATHED BEAM TUBE.
US5442263A (en) * 1994-08-23 1995-08-15 David Sarnoff Research Center, Inc. Dynamic electrostatic and magnetic focusing apparatus for a cathode ray tube
JP2004259507A (en) * 2003-02-25 2004-09-16 Mitsubishi Electric Corp Cathode-ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750218C (en) * 1935-10-31 1945-01-04 Rca Corp Device for the electromagnetic deflection of a cathode ray bundle

Also Published As

Publication number Publication date
GB440560A (en) 1935-12-30
FR773711A (en) 1934-11-24
US2188579A (en) 1940-01-30
US2185138A (en) 1939-12-26
FR44992E (en) 1935-05-01

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