SE304558B - - Google Patents
Info
- Publication number
- SE304558B SE304558B SE6489/67A SE648967A SE304558B SE 304558 B SE304558 B SE 304558B SE 6489/67 A SE6489/67 A SE 6489/67A SE 648967 A SE648967 A SE 648967A SE 304558 B SE304558 B SE 304558B
- Authority
- SE
- Sweden
- Prior art keywords
- boron
- mixture
- electron emissive
- tungsten
- compound
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
- H01J61/0677—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material
Landscapes
- Discharge Lamp (AREA)
- Solid Thermionic Cathode (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Luminescent Compositions (AREA)
Abstract
1,193,864. Electrode materials. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 9 May, 1967 [12 May, 1966], No. 21427/67. Heading H1D. A low-pressure mercury-vapour lamp stated to give rise to reduced interference radiation has two thermionic electrodes, each electrode consisting of a support coated with a mixture which includes an electron emissive substance together with elemental boron, or a compound of boron with oxygen, chromium, tungsten, or molybdenum, the electron emissive substance containing at least one alkaline earth metal oxide, and the quantity of boron or boron compound lying in the range 0À1 to 15%-and preferably 0À1 to 10% by weight of the alkaline earth oxide. The compounds boron trioxide, chromium triboride, tungsten monoboride, and molybdenum diboride are specifically referred to, the grain size of the boron or boron compound being not greater than 30, and preferably less than 15, the mean grain size of the electron emissive particles. The mixture may additionally include zirconium in amount from 1 to 5% by weight of the electron emissive substance. A mixture of the boron or boride, zirconium, and an 8: 5: 7 mixture of barium, calcium and strontium carbonates may be coated on a tungsten wire support which is subsequently heated to decompose the carbonates to oxides. Examples of compositions are given.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6606479A NL6606479A (en) | 1966-05-12 | 1966-05-12 | |
| NL6614550A NL6614550A (en) | 1966-10-15 | 1966-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE304558B true SE304558B (en) | 1968-09-30 |
Family
ID=26644037
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE6482/67A SE305031B (en) | 1966-05-12 | 1967-05-09 | |
| SE6489/67A SE304558B (en) | 1966-05-12 | 1967-05-09 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE6482/67A SE305031B (en) | 1966-05-12 | 1967-05-09 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3505553A (en) |
| AT (1) | AT279735B (en) |
| BE (2) | BE698366A (en) |
| CH (2) | CH464354A (en) |
| DE (2) | DE1589247B2 (en) |
| ES (2) | ES340338A1 (en) |
| FR (2) | FR1522814A (en) |
| GB (2) | GB1193864A (en) |
| NO (1) | NO118120B (en) |
| SE (2) | SE305031B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321503A (en) * | 1978-11-06 | 1982-03-23 | Westinghouse Electric Corp. | HID Lamp electrode comprising barium-calcium niobate or tantalate |
| JPS63141252A (en) * | 1986-12-02 | 1988-06-13 | Hitachi Ltd | Low pressure discharge lamp |
| US4910431A (en) * | 1987-04-24 | 1990-03-20 | W. C. Heraeus Gmbh | Hydrogen discharge ultraviolet light source or lamp, and method of its manufacture |
| DE3713704A1 (en) * | 1987-04-24 | 1988-11-03 | Heraeus Gmbh W C | HYDROGEN DISCHARGE LAMP AND METHOD FOR THE PRODUCTION THEREOF |
| DE3715375C1 (en) * | 1987-05-08 | 1988-10-13 | Heraeus Gmbh W C | Hydrogen discharge lamp |
| US5391523A (en) * | 1993-10-27 | 1995-02-21 | Marlor; Richard C. | Electric lamp with lead free glass |
| US5675214A (en) * | 1994-09-21 | 1997-10-07 | U.S. Philips Corporation | Low-pressure discharge lamp having hollow electrodes |
| JP3762434B2 (en) * | 1994-11-08 | 2006-04-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Low pressure discharge lamp |
| US5686789A (en) * | 1995-03-14 | 1997-11-11 | Osram Sylvania Inc. | Discharge device having cathode with micro hollow array |
| JPH103879A (en) * | 1996-06-12 | 1998-01-06 | Tdk Corp | Ceramic cathode fluorescent lamp |
| US5856726A (en) * | 1996-03-15 | 1999-01-05 | Osram Sylvania Inc. | Electric lamp with a threaded electrode |
| US6713950B2 (en) | 2001-08-22 | 2004-03-30 | General Electric Company | Low volatility slurry for emission mix powder |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL80503C (en) * | 1950-03-31 | |||
| US2878411A (en) * | 1955-03-21 | 1959-03-17 | Chromatic Television Lab Inc | Color television display screen |
| US2959702A (en) * | 1958-07-02 | 1960-11-08 | Westinghouse Electric Corp | Lamp and mount |
| US3027480A (en) * | 1958-12-15 | 1962-03-27 | Raytheon Co | Electron discharge device cathodes |
| GB1015840A (en) * | 1964-09-08 | 1966-01-05 | Standard Telephones Cables Ltd | Thermionic valves |
| GB1178051A (en) * | 1966-04-20 | 1970-01-14 | Matsushita Electronics Corp | Noiseless Discharge Tube |
| GB1178052A (en) * | 1966-04-20 | 1970-01-14 | Matsushita Electronics Corp | A Noiseless Discharge Tube |
-
1967
- 1967-04-27 US US634222A patent/US3505553A/en not_active Expired - Lifetime
- 1967-05-09 DE DE1967N0030478 patent/DE1589247B2/en active Granted
- 1967-05-09 CH CH660267A patent/CH464354A/en unknown
- 1967-05-09 NO NO168066A patent/NO118120B/no unknown
- 1967-05-09 DE DE1967N0030479 patent/DE1589248B2/en active Granted
- 1967-05-09 SE SE6482/67A patent/SE305031B/xx unknown
- 1967-05-09 SE SE6489/67A patent/SE304558B/xx unknown
- 1967-05-09 AT AT432567A patent/AT279735B/en not_active IP Right Cessation
- 1967-05-09 GB GB21427/67A patent/GB1193864A/en not_active Expired
- 1967-05-09 GB GB21428/67A patent/GB1191463A/en not_active Expired
- 1967-05-09 CH CH660367A patent/CH490732A/en not_active IP Right Cessation
- 1967-05-10 ES ES340338A patent/ES340338A1/en not_active Expired
- 1967-05-10 ES ES340339A patent/ES340339A1/en not_active Expired
- 1967-05-11 BE BE698366D patent/BE698366A/xx unknown
- 1967-05-12 BE BE698451D patent/BE698451A/xx unknown
- 1967-05-12 FR FR106222A patent/FR1522814A/en not_active Expired
- 1967-05-12 FR FR106223A patent/FR1522815A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1522814A (en) | 1968-04-26 |
| US3505553A (en) | 1970-04-07 |
| DE1589248B2 (en) | 1976-04-15 |
| CH490732A (en) | 1970-05-15 |
| DE1589247B2 (en) | 1976-04-15 |
| BE698366A (en) | 1967-11-13 |
| GB1191463A (en) | 1970-05-13 |
| ES340338A1 (en) | 1968-06-01 |
| DE1589248A1 (en) | 1970-04-30 |
| NO118120B (en) | 1969-11-10 |
| GB1193864A (en) | 1970-06-03 |
| ES340339A1 (en) | 1968-06-01 |
| SE305031B (en) | 1968-10-14 |
| FR1522815A (en) | 1968-04-26 |
| DE1589247A1 (en) | 1970-04-09 |
| BE698451A (en) | 1967-11-13 |
| AT279735B (en) | 1970-03-10 |
| CH464354A (en) | 1968-10-31 |
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