FR2218642B1 - - Google Patents

Info

Publication number
FR2218642B1
FR2218642B1 FR7405677A FR7405677A FR2218642B1 FR 2218642 B1 FR2218642 B1 FR 2218642B1 FR 7405677 A FR7405677 A FR 7405677A FR 7405677 A FR7405677 A FR 7405677A FR 2218642 B1 FR2218642 B1 FR 2218642B1
Authority
FR
France
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
FR7405677A
Other languages
French (fr)
Other versions
FR2218642A1 (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 FR2218642A1 publication Critical patent/FR2218642A1/fr
Application granted granted Critical
Publication of FR2218642B1 publication Critical patent/FR2218642B1/fr
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
FR7405677A 1973-02-21 1974-02-20 Expired FR2218642B1 (en)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
FR2218642A1 FR2218642A1 (en) 1974-09-13
FR2218642B1 true FR2218642B1 (en) 1976-11-26

Family

ID=26357073

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7405677A Expired FR2218642B1 (en) 1973-02-21 1974-02-20

Country Status (4)

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

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 (en) * 1978-10-18 1985-02-23 日新製鋼株式会社 Manufacturing method of shadow mask for color TV cathode ray tube
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 (en) * 1983-04-27 1984-11-14 Toshiba Corp Manufacture of shadow mask
NL8302276A (en) * 1983-06-28 1985-01-16 Philips Nv CATHODE JET TUBE WITH AN FE-CO-CR SHADOW MASK AND METHOD FOR MANUFACTURING SUCH SHADOW MASK.
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
US3663997A (en) * 1970-09-30 1972-05-23 Rca Corp Method for making a kinescope comprising production and treatment of a temporary mask
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
DE2408435B2 (en) 1981-07-02
DE2408435C3 (en) 1982-03-04
US3909928A (en) 1975-10-07
GB1464131A (en) 1977-02-09
DE2408435A1 (en) 1974-09-12
FR2218642A1 (en) 1974-09-13

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