GB1464131A - Manufacture of shadow masks - Google Patents

Manufacture of shadow masks

Info

Publication number
GB1464131A
GB1464131A GB778974A GB778974A GB1464131A GB 1464131 A GB1464131 A GB 1464131A GB 778974 A GB778974 A GB 778974A GB 778974 A GB778974 A GB 778974A GB 1464131 A GB1464131 A GB 1464131A
Authority
GB
United Kingdom
Prior art keywords
sheet
rolling
forming
rolled
feb
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
GB778974A
Other languages
English (en)
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Priority claimed from JP48020167A external-priority patent/JPS5244868B2/ja
Priority claimed from JP48075358A external-priority patent/JPS5023317A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1464131A publication Critical patent/GB1464131A/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
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes
    • 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
    • Y10T29/496—Multiperforated metal article making
    • 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
    • Y10T29/49995—Shaping one-piece blank by removing material
    • 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
    • Y10T29/49995—Shaping one-piece blank by removing material
    • Y10T29/49996—Successive distinct removal operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
GB778974A 1973-02-21 1974-02-20 Manufacture of shadow masks Expired GB1464131A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP48020167A JPS5244868B2 (enrdf_load_stackoverflow) 1973-02-21 1973-02-21
JP48075358A JPS5023317A (enrdf_load_stackoverflow) 1973-07-04 1973-07-04

Publications (1)

Publication Number Publication Date
GB1464131A true GB1464131A (en) 1977-02-09

Family

ID=26357073

Family Applications (1)

Application Number Title Priority Date Filing Date
GB778974A Expired GB1464131A (en) 1973-02-21 1974-02-20 Manufacture of shadow masks

Country Status (4)

Country Link
US (1) US3909928A (enrdf_load_stackoverflow)
DE (1) DE2408435C3 (enrdf_load_stackoverflow)
FR (1) FR2218642B1 (enrdf_load_stackoverflow)
GB (1) GB1464131A (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094678A (en) * 1976-12-07 1978-06-13 Zenith Radio Corporation Method of making curved color cathode ray tube shadow masks having interregistrable electron beam-passing aperture patterns
US4187443A (en) * 1978-09-08 1980-02-05 Rca Corporation Color picture tube having improved corrugated apertured mask and method of making same
JPS607342B2 (ja) * 1978-10-18 1985-02-23 日新製鋼株式会社 カラ−テレビブラウン管用シヤドウマスクの製造方法
JPS5569238A (en) * 1978-11-15 1980-05-24 Nisshin Steel Co Ltd Steel for shadow mask of color television braun tube
US4210843A (en) * 1979-04-03 1980-07-01 Zenith Radio Corporation Color CRT shadow mask and method of making same
CA1204143A (en) * 1982-08-27 1986-05-06 Kanemitsu Sato Textured shadow mask
JPS59200721A (ja) * 1983-04-27 1984-11-14 Toshiba Corp シヤドウマスクの製造方法
NL8302276A (nl) * 1983-06-28 1985-01-16 Philips Nv Kathodestraalbuis met een fe-co-cr schaduwmasker en werkwijze ter vervaardiging van zo'n schaduwmasker.
US20040100638A1 (en) * 2002-11-27 2004-05-27 The Regents Of The University Of California. Correcting surface contour of a non-rigid object through control of surface residual stress

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376451A (en) * 1966-09-12 1968-04-02 Buckbee Mears Co Shadow mask and magnetic shield unitary construction for color tv picture tubes
US3519869A (en) * 1967-04-11 1970-07-07 Victor Company Of Japan Shadow mask having apertures progressively tapered from center to periphery
US3479546A (en) * 1968-06-11 1969-11-18 Buckbee Mears Co Self-supporting shadow mask for colored tv picture tubes
US3676914A (en) * 1970-05-01 1972-07-18 Zenith Radio Corp Manufacture of shadow mask color picture tube
US3707640A (en) * 1970-06-18 1972-12-26 Zenith Radio Corp Shadow mask having double-sized apertures
US3725065A (en) * 1970-09-30 1973-04-03 Rca Corp Method for making a kinescope comprising a color selection mask with temporary corridors
US3808071A (en) * 1972-04-14 1974-04-30 Zenith Radio Corp Etch-back process
US3809945A (en) * 1973-03-02 1974-05-07 Zenith Radio Corp Shadow mask for color cathode ray tube and method of manufacture thereof

Also Published As

Publication number Publication date
US3909928A (en) 1975-10-07
FR2218642B1 (enrdf_load_stackoverflow) 1976-11-26
DE2408435A1 (de) 1974-09-12
FR2218642A1 (enrdf_load_stackoverflow) 1974-09-13
DE2408435B2 (de) 1981-07-02
DE2408435C3 (de) 1982-03-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PE20 Patent expired after termination of 20 years

Effective date: 19940219