GB740266A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB740266A
GB740266A GB960453A GB960453A GB740266A GB 740266 A GB740266 A GB 740266A GB 960453 A GB960453 A GB 960453A GB 960453 A GB960453 A GB 960453A GB 740266 A GB740266 A GB 740266A
Authority
GB
United Kingdom
Prior art keywords
partition
ball
plug
glass
photo
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
GB960453A
Inventor
Ronald Alexander Millar
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB960453A priority Critical patent/GB740266A/en
Priority to FR1097446D priority patent/FR1097446A/en
Publication of GB740266A publication Critical patent/GB740266A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

740,266. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 10, 1954 [April 9, 1953], No. 9604/53. Class 39 (1). During the vaporization of photo-conductive material such as selenium or tellurium on the target 2, the cathode 3 is protected by a movable plug 7 closing an aperture in a partition 5. As shown enlarged in Fig. 2, the partition may be a cupshaped glass member with an inner lip 10 providing a rest position when inoperative (dotted), and the plug a steel ball or a glass-coated steel-cored ball. The partition may alternatively be metallized or of metal or ceramic and the ball may be of ceramic or glass or a magnetic alloy inert to the photo-conductive material. The ball may be moved by gravity, directly by magnetic attraction, or by a wire connected to a magnetically movable slug in a side-tube, Fig. 3 (not shown). The partition and plug may be conical.
GB960453A 1953-04-09 1953-04-09 Improvements in or relating to electron discharge devices Expired GB740266A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB960453A GB740266A (en) 1953-04-09 1953-04-09 Improvements in or relating to electron discharge devices
FR1097446D FR1097446A (en) 1953-04-09 1954-03-29 Improvements to electronic tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB960453A GB740266A (en) 1953-04-09 1953-04-09 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB740266A true GB740266A (en) 1955-11-09

Family

ID=9875188

Family Applications (1)

Application Number Title Priority Date Filing Date
GB960453A Expired GB740266A (en) 1953-04-09 1953-04-09 Improvements in or relating to electron discharge devices

Country Status (2)

Country Link
FR (1) FR1097446A (en)
GB (1) GB740266A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149200A (en) * 1983-09-06 1985-06-05 Hamamatsu Photonics Kk Imaging and streaking tubes
WO2003065400A2 (en) * 2002-02-01 2003-08-07 Extreme Devices Incorporated Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149200A (en) * 1983-09-06 1985-06-05 Hamamatsu Photonics Kk Imaging and streaking tubes
WO2003065400A2 (en) * 2002-02-01 2003-08-07 Extreme Devices Incorporated Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube
WO2003065400A3 (en) * 2002-02-01 2003-11-06 Extreme Devices Inc Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube

Also Published As

Publication number Publication date
FR1097446A (en) 1955-07-05

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