GB477874A - Improvements in anodes for cathode ray tubes - Google Patents

Improvements in anodes for cathode ray tubes

Info

Publication number
GB477874A
GB477874A GB12385/37A GB1238537A GB477874A GB 477874 A GB477874 A GB 477874A GB 12385/37 A GB12385/37 A GB 12385/37A GB 1238537 A GB1238537 A GB 1238537A GB 477874 A GB477874 A GB 477874A
Authority
GB
United Kingdom
Prior art keywords
anodes
diaphragm
cathode ray
ray tubes
hole
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
GB12385/37A
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 GB477874A publication Critical patent/GB477874A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
    • H01J37/31—Electron-beam or ion-beam tubes for localised treatment of objects for cutting or drilling

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Particle Accelerators (AREA)

Abstract

477,874. Perforating. FARNSWORTH TELEVISION, Inc. April 30, 1937, No. 12385. Convention date, May 18, 1936. [Class 83 (iv)] [Also in Group XL] In a cathode-ray tube the aperture 12 in the diaphragm 11 at the end of the anode 4 is formed by bombarding the imperforate diaphragm by electrons from the indirectly heated cathode 3 until a hole is melted in the diaphragm. Indication of the size of the hole is ob - tained by the spot obtained on the fluorescent screen 2.
GB12385/37A 1936-05-18 1937-04-30 Improvements in anodes for cathode ray tubes Expired GB477874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80338A US2128581A (en) 1936-05-18 1936-05-18 Fine beam electron gun

Publications (1)

Publication Number Publication Date
GB477874A true GB477874A (en) 1938-01-07

Family

ID=22156749

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12385/37A Expired GB477874A (en) 1936-05-18 1937-04-30 Improvements in anodes for cathode ray tubes

Country Status (3)

Country Link
US (1) US2128581A (en)
FR (1) FR821969A (en)
GB (1) GB477874A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2529134A (en) * 1947-10-02 1950-11-07 Rauland Corp Support for electron guns
US2741719A (en) * 1950-09-27 1956-04-10 Rauland Corp Method and apparatus for inscribing a pattern in a target electrode structure
DE903017C (en) * 1951-01-31 1954-02-01 Sueddeutsche Lab G M B H Manufacture of small balls from high-fusible materials
DE896827C (en) * 1951-09-08 1953-11-16 Licentia Gmbh Process for the shaping processing of crystalline semiconductor bodies
GB754866A (en) * 1953-04-15 1956-08-15 Heraeus Gmbh W C Improvements in or relating to spinning nozzles
BE542056A (en) * 1954-10-15
US3049608A (en) * 1959-08-24 1962-08-14 Air Reduction Electron beam welding
NL272592A (en) * 1960-12-16
BE554195A (en) * 1964-04-15
DD225625A1 (en) * 1983-12-20 1985-08-07 Medizin Labortechnik Veb K METHOD FOR PRODUCING A SEPARATOR
US5220239A (en) * 1991-12-09 1993-06-15 Chunghwa Picture Tubes, Ltd. High density electron beam generated by low voltage limiting aperture gun
US5223764A (en) * 1991-12-09 1993-06-29 Chunghwa Picture Tubes, Ltd. Electron gun with low voltage limiting aperture main lens
US5159240A (en) * 1991-12-09 1992-10-27 Chunghwa Picture Tubes, Ltd. Low voltage limiting aperture electron gun
US5182492A (en) * 1992-05-20 1993-01-26 Chunghwa Picture Tubes, Ltd. Electron beam shaping aperture in low voltage, field-free region of electron gun

Also Published As

Publication number Publication date
FR821969A (en) 1937-12-17
US2128581A (en) 1938-08-30

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