GB1464131A - Manufacture of shadow masks - Google Patents
Manufacture of shadow masksInfo
- 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
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48020167A JPS5244868B2 (ko) | 1973-02-21 | 1973-02-21 | |
JP48075358A JPS5023317A (ko) | 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 (ko) |
DE (1) | DE2408435C3 (ko) |
FR (1) | FR2218642B1 (ko) |
GB (1) | GB1464131A (ko) |
Families Citing this family (9)
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)
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 |
-
1974
- 1974-02-20 GB GB778974A patent/GB1464131A/en not_active Expired
- 1974-02-20 FR FR7405677A patent/FR2218642B1/fr not_active Expired
- 1974-02-21 US US444569A patent/US3909928A/en not_active Expired - Lifetime
- 1974-02-21 DE DE2408435A patent/DE2408435C3/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2408435C3 (de) | 1982-03-04 |
DE2408435A1 (de) | 1974-09-12 |
US3909928A (en) | 1975-10-07 |
DE2408435B2 (de) | 1981-07-02 |
FR2218642A1 (ko) | 1974-09-13 |
FR2218642B1 (ko) | 1976-11-26 |
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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 |