GB943761A - Improvements in electron emissive tapes and method of making - Google Patents

Improvements in electron emissive tapes and method of making

Info

Publication number
GB943761A
GB943761A GB46310/61A GB4631061A GB943761A GB 943761 A GB943761 A GB 943761A GB 46310/61 A GB46310/61 A GB 46310/61A GB 4631061 A GB4631061 A GB 4631061A GB 943761 A GB943761 A GB 943761A
Authority
GB
United Kingdom
Prior art keywords
methacrylate
poly
emissive
film
plasticizer
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
GB46310/61A
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.)
Machlett Laboratories Inc
Original Assignee
Machlett Laboratories 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 Machlett Laboratories Inc filed Critical Machlett Laboratories Inc
Publication of GB943761A publication Critical patent/GB943761A/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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813—Heat or solvent activated or sealable
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813—Heat or solvent activated or sealable
    • Y10T428/2817—Heat sealable

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

943,761. Thermionic cathodes. MACHLETT LABORATORIES Inc. Dec. 27, 1961 [Jan. 3, 1961], No. 46310/61. Drawings to Specification. Heading H1D. A flexible, self-supporting, electron-emissive film comprises a polymethacrylate binder which completely volatilizes when subjected to heat during normal electron tube processing. The film may be prepared by coating a sheet of paper or polyethylene with a mixture of 6% by weight of poly-n-butyl methacrylate, 90% emissive substance, and 4% plasticizer in a solvent, e.g. acetone, amylacetate or ethylacetate. The plasticizer may be sucroseacetate-isobutyrate, dibutyl-phthalate and diethyl-oxalate and the emissive substance 70% nickel powder, 29% emissive carbonates and 1 % zirconium hydride. The binder may be polymethyl methacrylate, polyethyl methacrylate, poly-n-propyl methacrylate, poly-isopropyi methacrylate, poly-iso-butyl methacrylate or poly-n-amyl methacrylate. After drying, the film may be removable from the carrier sheet either before or after application to a cathode base. The emissive film may be 40 microns thick with a density of 1.8 gms./cm.<SP>3</SP>, and may be sealed with a pressure of 10 kgms./ cm.<SP>3</SP>, to a nickel base which is cold or heated to 100‹ C. Alternatively, a bonding solvent, e.g. xylene, methyl-cellosolve-acetate or cyclohexanol, may be used.
GB46310/61A 1961-01-03 1961-12-27 Improvements in electron emissive tapes and method of making Expired GB943761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80098A US3212959A (en) 1961-01-03 1961-01-03 Electron emissive tapes and method of making

Publications (1)

Publication Number Publication Date
GB943761A true GB943761A (en) 1963-12-04

Family

ID=22155240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46310/61A Expired GB943761A (en) 1961-01-03 1961-12-27 Improvements in electron emissive tapes and method of making

Country Status (2)

Country Link
US (1) US3212959A (en)
GB (1) GB943761A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3327158A (en) * 1963-06-26 1967-06-20 Sylvania Electric Prod Semi-dispenser cathode with overlying emissive coating
US4721883A (en) * 1986-06-02 1988-01-26 Sidney Jacobs Electroluminescent display and method of making same
US4734617A (en) * 1986-06-02 1988-03-29 Sidney Jacobs Electroluminescent display and method of making same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648013A (en) * 1952-01-21 1953-08-04 Du Pont Fluorescent screen
US2796374A (en) * 1954-06-11 1957-06-18 Rca Corp Methods and means for transferring printed indicia
US2986671A (en) * 1954-08-31 1961-05-30 Sylvania Electric Prod Application of strip coating to cathode
US2950222A (en) * 1958-05-20 1960-08-23 Jay B Hinson Phosphor bearing surface

Also Published As

Publication number Publication date
US3212959A (en) 1965-10-19

Similar Documents

Publication Publication Date Title
GB1226728A (en)
GB1137910A (en) Electron image device
GB943761A (en) Improvements in electron emissive tapes and method of making
GB1152290A (en) Improvements relating to Luminescent Screens for Colour Television Picture Tubes
GB1002789A (en) Electrode structure
GB1262420A (en) Improvements in or relating to voltage overload protectors
GB1455387A (en) Cathode ray storage tube having a target dielectric provided with particulate segments of collector electrode extending therethrough
US1650921A (en) Vacuum tube
GB1323620A (en) Shadow masks for use in colour picture tubes
GB1417452A (en) Image tube employing high field electron emission suppression
GB952148A (en) Cathode ray tube screen intensifier
GB848340A (en) Electric circuit including an improved electric-discharge tube
GB949330A (en) Improvements in target electrodes and methods of manufacture
GB1075179A (en) Improvements in and relating to electronic storage tubes
US2792273A (en) Oxide coated nickel cathode and method of activation
GB692242A (en) Improvements in or relating to electron-optical image intensifiers
GB1076258A (en) Manufacture of electron discharge devices having cathodes
GB616487A (en) Improvements in or relating to electron emission filaments
JP2619106B2 (en) Oxide cathode
GB1080600A (en) Improvements relating to spark gap devices
GB975986A (en) Thermionic cathode
GB2012103A (en) Activation of cathodes
GB818052A (en) Improvements in or relating to cathode ray tubes
GB806893A (en) Improvements relating to thermionic electron-emitting devices
GB1006425A (en) Suspension for casting emissive film