GB767519A - Improvements in or relating to enclosed spark discharge lamps for signalling - Google Patents
Improvements in or relating to enclosed spark discharge lamps for signallingInfo
- Publication number
- GB767519A GB767519A GB6403/54A GB640354A GB767519A GB 767519 A GB767519 A GB 767519A GB 6403/54 A GB6403/54 A GB 6403/54A GB 640354 A GB640354 A GB 640354A GB 767519 A GB767519 A GB 767519A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- electrodes
- march
- block
- chamber
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
767,519. Discharge lamps. WESTFALISCHE METALL-INDUSTRIE GES. March 4, 1954 [March 6, 1953; March 9, 1953; April 24, 1953], No. 6403/54. Class 39(1). [Also in Groups XI and XL(b)] An optical signal emitter has a pair of electrodes forming a spark-gap in a gas-filled chamber at the focal point of a parabolic reflector within or forming part of the chamber, the reflector being formed of insulating material through which the electrodes pass and in which they are mounted, and that part of the chamber in front of the reflector being transparent. The emitter forms a sparklamp emitting short-pulses of light for signalling between road vehicles. In one form the reflector 3, Fig. 1, is a one micron silver coating on an insulating block 1 which, together with the window 4, forms the gas-filled chamber. The electrodes 2 pass through the block to external terminals 5. The coating may alternatively be on the outside of the insulating block. In another form, the reflector block 1 carrying the electrodes 2 is sealed within a glass envelope 8, Fig. 2, which is provided with a cap 10, and may be fitted into the housing 16 closed by a glass window 12. A condenser 15 may be incorporated in the housing as shown or in the cap or in the envelope.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE767519X | 1953-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB767519A true GB767519A (en) | 1957-02-06 |
Family
ID=6673537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6403/54A Expired GB767519A (en) | 1953-03-06 | 1954-03-04 | Improvements in or relating to enclosed spark discharge lamps for signalling |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB767519A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2202680A1 (en) * | 1971-01-25 | 1972-08-03 | Varian Associates | Short arc gas discharge lamp |
| US3731133A (en) * | 1972-01-07 | 1973-05-01 | Varian Associates | High-intensity arc lamp |
| US4792717A (en) * | 1983-04-21 | 1988-12-20 | Whelen Technologies, Inc. | Wide angle warning light |
| US4866329A (en) * | 1983-04-21 | 1989-09-12 | Whelen Technologies, Inc. | Wide angle warning light |
-
1954
- 1954-03-04 GB GB6403/54A patent/GB767519A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2202680A1 (en) * | 1971-01-25 | 1972-08-03 | Varian Associates | Short arc gas discharge lamp |
| US3731133A (en) * | 1972-01-07 | 1973-05-01 | Varian Associates | High-intensity arc lamp |
| US4792717A (en) * | 1983-04-21 | 1988-12-20 | Whelen Technologies, Inc. | Wide angle warning light |
| US4866329A (en) * | 1983-04-21 | 1989-09-12 | Whelen Technologies, Inc. | Wide angle warning light |
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