GB1309696A - Shadow mask support means for a colour television image tube - Google Patents
Shadow mask support means for a colour television image tubeInfo
- Publication number
- GB1309696A GB1309696A GB1257870A GB1257870A GB1309696A GB 1309696 A GB1309696 A GB 1309696A GB 1257870 A GB1257870 A GB 1257870A GB 1257870 A GB1257870 A GB 1257870A GB 1309696 A GB1309696 A GB 1309696A
- Authority
- GB
- United Kingdom
- Prior art keywords
- expansion
- pin
- colour
- bimetal
- shadow mask
- 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
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
- H01J29/07—Shadow masks for colour television tubes
- H01J29/073—Mounting arrangements associated with shadow masks
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
1309696 Colour television display tubes MATSUSHITA ELECTRONICS CORP 16 March 1970 [19 March 1969 (2)] 12578/70 Heading H1D A shadow mask support mechanism for a colour TV tube includes three or four mask supporters at least one of the supporters comprising a bi-metal member 17 secured to the frame 2, its free end connected to a leaf spring 8 the other end of which extends towards a pin provided on the tube side wall. The thermal deflection at the metal platen-spring connection is such that the expansion at the pin side is smaller than on the other side this preventing local twisting of the spring and non-uniform movement of the mask towards the screen. Uniform movement toward the screen compensates for colour purity errors due to thermal expansion. The bimetal piece 17 welding line L may intersect the welding line l in the range five to fourty degrees, preferably about fifteen degrees. Two bimetal parts (27), (37), (Fig. 5, not shown), may be used in parallel, of respectively different expansion coefficients by including different materials for each other, or may be of different thicknesses or shapes. Also the part (37) on the pin side may be replaced by a single layer metal plate. A lower expansion U-shaped metal plate (47a), (Fig. 6, not shown), may be combined with a higher expansion plate attached to the leg remote from the pin or a bimetal plate (57), (Fig. 7, not shown), may include a further metal piece (57c) welded at the side near the pin to mechanically reduce the expansion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2183469A JPS4826419B1 (en) | 1969-03-19 | 1969-03-19 | |
JP2183369A JPS4826418B1 (en) | 1969-03-19 | 1969-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1309696A true GB1309696A (en) | 1973-03-14 |
Family
ID=26358954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1257870A Expired GB1309696A (en) | 1969-03-19 | 1970-03-16 | Shadow mask support means for a colour television image tube |
Country Status (4)
Country | Link |
---|---|
US (2) | US3660708A (en) |
DE (1) | DE2012937C3 (en) |
FR (1) | FR2035074A1 (en) |
GB (1) | GB1309696A (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2151051B1 (en) * | 1971-09-03 | 1974-10-25 | Hitachi Ltd | |
US3754157A (en) * | 1971-09-30 | 1973-08-21 | Hitachi Ltd | Stepped bimetallic shadow mask mounting element |
US3970456A (en) * | 1974-12-06 | 1976-07-20 | Rca Corporation | Method for preparing a viewing-screen structure for a CRT having temperature-compensated mask-mounting means, including cooling mask during exposure |
US4367430A (en) * | 1979-01-25 | 1983-01-04 | Mitsubishi Denki Kabushiki Kaisha | Shadow mask type color cathode-ray tube |
US4315189A (en) * | 1979-02-14 | 1982-02-09 | Toshiba Corporation | Support structure for shadow mask of color cathode ray tube |
US4506188A (en) * | 1982-11-24 | 1985-03-19 | North American Philips Consumer Electronics Corp. | Laminated metallic means for dampening internal CRT vibrations |
US5066886A (en) * | 1989-10-31 | 1991-11-19 | Carpenter Technology Corporation | Thermally responsive article, method of making same, and a device incorporataing said article |
KR930006734Y1 (en) * | 1991-06-08 | 1993-10-06 | 삼성전관 주식회사 | Flame assembling structure of shadow mask |
KR100388902B1 (en) * | 1999-06-30 | 2003-06-25 | 삼성에스디아이 주식회사 | Shadow mask frame assembly for flat type CRT |
KR20030003474A (en) * | 2001-07-02 | 2003-01-10 | 삼성에스디아이 주식회사 | Mask assembly for cathode ray tube |
JP4694997B2 (en) * | 2006-03-22 | 2011-06-08 | 日本電産サンキョー株式会社 | motor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3449611A (en) * | 1966-06-22 | 1969-06-10 | Nat Video Corp | Suspension system for color television tube mask |
-
1970
- 1970-03-16 US US19945A patent/US3660708A/en not_active Expired - Lifetime
- 1970-03-16 GB GB1257870A patent/GB1309696A/en not_active Expired
- 1970-03-18 FR FR7009718A patent/FR2035074A1/fr active Pending
- 1970-03-18 DE DE2012937A patent/DE2012937C3/en not_active Expired
-
1972
- 1972-02-10 US US00225307A patent/US3823336A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2035074A1 (en) | 1970-12-18 |
US3660708A (en) | 1972-05-02 |
DE2012937A1 (en) | 1971-10-28 |
US3823336A (en) | 1974-07-09 |
DE2012937B2 (en) | 1972-06-29 |
DE2012937C3 (en) | 1979-12-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PE20 | Patent expired after termination of 20 years |