GB232202A - Improvements in or relating to x-ray tubes provided with an incandescent cathode and an envelope which consists partly of insulating material and partly of metal - Google Patents
Improvements in or relating to x-ray tubes provided with an incandescent cathode and an envelope which consists partly of insulating material and partly of metalInfo
- Publication number
- GB232202A GB232202A GB8587/25A GB858725A GB232202A GB 232202 A GB232202 A GB 232202A GB 8587/25 A GB8587/25 A GB 8587/25A GB 858725 A GB858725 A GB 858725A GB 232202 A GB232202 A GB 232202A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- cathode
- envelope
- anticathode
- partly
- 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
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/16—Vessels; Containers; Shields associated therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2235/00—X-ray tubes
- H01J2235/16—Vessels
- H01J2235/165—Shielding arrangements
- H01J2235/168—Shielding arrangements against charged particles
Landscapes
- X-Ray Techniques (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
232,202. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. April 10, 1924, [Convention date]. Vacuum tubes; R÷ntgenray tubes.-In a tube with an incandescent cathode, joints between metallic and insulating parts of an envelope are protected against electrostatic strain by providing within the envelope a number of metal partitions having different potentials and between which electrons when moving towards the seals must pass in such a way as to reverse their motion at least once. In the X-ray tube shown, these partitions 17, 18 are attached to the anticathode 12 and to the cover of a metal vessel 2 enclosing the cathode filament 5 and sealed at 30 to a double glass tube 1 insulating the cooled anticathode. The other end of the metal vessel'2 is sealed to a glass window 3 for the X-rays and fitted with an annular disc 10. One end of the filament is supplied with current through the metal vessel, to which the negative, battery terminal is preferably connected. Electrons strike the anti-cathode over an area limited by the metal cover 11, in which is an aperture 13. The metal vessel and anti-cathode may be of chromium-iron alloy, a tungsten target being fitted to the anticathode. In a modification, the overlapping partitions are at right-angles to the axis of the tube.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL232202X | 1924-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB232202A true GB232202A (en) | 1925-09-24 |
Family
ID=19780040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8587/25A Expired GB232202A (en) | 1924-04-10 | 1925-03-31 | Improvements in or relating to x-ray tubes provided with an incandescent cathode and an envelope which consists partly of insulating material and partly of metal |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1591129A (en) |
| FR (1) | FR593479A (en) |
| GB (1) | GB232202A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE477491A (en) * | 1943-05-28 | |||
| US2720607A (en) * | 1952-06-23 | 1955-10-11 | Edward L Criscuolo | Sealed off, fine focus, long life, flash x-ray tube |
| US2886725A (en) * | 1955-07-22 | 1959-05-12 | Machlett Lab Inc | X-ray tubes |
-
1925
- 1925-02-17 FR FR593479D patent/FR593479A/en not_active Expired
- 1925-02-18 US US10104A patent/US1591129A/en not_active Expired - Lifetime
- 1925-03-31 GB GB8587/25A patent/GB232202A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1591129A (en) | 1926-07-06 |
| FR593479A (en) | 1925-08-24 |
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