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GB480073A - Improvements in cathode ray tubes - Google Patents

Improvements in cathode ray tubes

Info

Publication number
GB480073A
GB480073A GB14586/37A GB1458637A GB480073A GB 480073 A GB480073 A GB 480073A GB 14586/37 A GB14586/37 A GB 14586/37A GB 1458637 A GB1458637 A GB 1458637A GB 480073 A GB480073 A GB 480073A
Authority
GB
United Kingdom
Prior art keywords
cathode
tube
enclosure
ray tubes
cathode ray
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
GB14586/37A
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.)
Farnsworth Television Inc
Original Assignee
Farnsworth Television Inc
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 Farnsworth Television Inc filed Critical Farnsworth Television Inc
Publication of GB480073A publication Critical patent/GB480073A/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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/64—Magnetic lenses
    • H01J29/66—Magnetic lenses using electromagnetic means only

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

480,073. Cathode-ray tubes. FARIVTSWORTH TELEVISION, Inc. May 26, 1937 No. 14586. Convention date, June 1, 1936. [Class 39 (i)] A cathode-ray tube is provided with an electromagnetic focusing coil 8 which is supported within the enclosing vessel 1 of the cathode-ray tube, being coaxially positioned with respect to the cathode 4 and located between the cathode and fluorescent screen in a gas-tight enclosure 9 which separates the ,coil from the main enclosure of the tube. The enclosure 9, which is of glass; is of annular shape, the tube anode 7 being firmly fixed in its central aperture.
GB14586/37A 1936-06-01 1937-05-26 Improvements in cathode ray tubes Expired GB480073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82887A US2158279A (en) 1936-06-01 1936-06-01 Cathode bay tube

Publications (1)

Publication Number Publication Date
GB480073A true GB480073A (en) 1938-02-16

Family

ID=22174079

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14586/37A Expired GB480073A (en) 1936-06-01 1937-05-26 Improvements in cathode ray tubes

Country Status (2)

Country Link
US (1) US2158279A (en)
GB (1) GB480073A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619607A (en) * 1951-03-10 1952-11-25 Glaser Steers Corp Internal focusing device

Also Published As

Publication number Publication date
US2158279A (en) 1939-05-16

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