US2489080A - X-ray tube comprising a disk-shaped rotary anode - Google Patents

X-ray tube comprising a disk-shaped rotary anode Download PDF

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Publication number
US2489080A
US2489080A US761965A US76196547A US2489080A US 2489080 A US2489080 A US 2489080A US 761965 A US761965 A US 761965A US 76196547 A US76196547 A US 76196547A US 2489080 A US2489080 A US 2489080A
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US
United States
Prior art keywords
anode
disc
ray tube
heat
disk
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 - Lifetime
Application number
US761965A
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English (en)
Inventor
Combee Bart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hartford National Bank and Trust Co
Original Assignee
Hartford National Bank and Trust Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
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Publication of US2489080A publication Critical patent/US2489080A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes
    • H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • H01J35/105—Cooling of rotating anodes, e.g. heat emitting layers or structures

Definitions

  • anode is supporte y ll be ings 5 which are I the form of c t ti of a X-ray secured to the stationary shaft 6 and connected tube having a disc-shaped rotary anode the imto the rotor.
  • the latter consists of a copper pact-disc for the electrons is provided on a disc jacket 1 provided with a lining 8 which consists consisting of refractory metal which is better of iron for the electromagnetic driving.
  • the workable than tungsten This measure has for jacket carries the shaft 4 and the tungsten its purpose to increase the thermal capacity of anode-disc 9 which is provided on a disc I0 consisting of metal which is better workable than tungsten, this disc having a rim ll.
  • the temperature to which the plate 10 can be heated depends upon the metal from which it is made. This tempera-- ture should not be exceeded during operation.
  • the disc-anode has a workin temperature of 1500 K.; the specific thermal radiation then being 6.5 watt/sq. cm. for tungsten.”
  • the temperature of the carrier plate may, for instance, be 1200 K.; this plate may consist of molybdenum or even of iron, the specific radiation for a well blackened surface then likewise being 6 watt/sq. cm.
  • the diameter consequently being 50 mms.
  • the temperature of the rotor must not exceed 600 K.
  • the radiation coeflicient of a blackened copper surface of 100 sq. cm. is approximately 2.95 X 10-
  • the rim In the event of a diameter of 4 cms. the rim has a height of 24 mms.
  • the anode-disc In the absence of the carrier member the anode-disc, in order to be able to withstand load, must have a surface of and a diameter of 67 mms.
  • the carrier-disc consists of titanium iron which isprovided with a black surface obtained by oxidation.
  • the relation between the black layer and the metal surface is not appreciably affected when the carrier-disc is heated to incandescence, so that, in
  • an X-ray 'tube employed for screening and having a discshaped rotary anode can be loaded with greatity to a degree 50% higher than it was possible in the past.
  • this improvement is not appreciably afiected.
  • An X-ray tube having a rotating anode comprisingan anode disc of tungsten, and a supporting disc of titanium iron provided with a black oxidized surface, said supporting disc being provided with a rim portion having a surface area for radiating at least one-third of the heat produced in said anode disc when said anode disc is operated at the maximum operating temperature.
  • An X-ray tube having a rotating anode comprising an anode disc of tungsten, and a heatradiating cup-shaped supporting member for the anode disc of black oxidized titanium-iron provided with a plurality of apertures in the rim portion thereof, the rim portion having a surface area for which at least one-third of the heat produced in the anode disc at the maximum operating temperature thereof is radiated from the supporting member.

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  • X-Ray Techniques (AREA)
US761965A 1946-07-17 1947-07-18 X-ray tube comprising a disk-shaped rotary anode Expired - Lifetime US2489080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL265039X 1946-07-17

Publications (1)

Publication Number Publication Date
US2489080A true US2489080A (en) 1949-11-22

Family

ID=19781672

Family Applications (1)

Application Number Title Priority Date Filing Date
US761965A Expired - Lifetime US2489080A (en) 1946-07-17 1947-07-18 X-ray tube comprising a disk-shaped rotary anode

Country Status (7)

Country Link
US (1) US2489080A (xx)
BE (1) BE474657A (xx)
CH (1) CH265039A (xx)
DE (1) DE807973C (xx)
FR (1) FR949546A (xx)
GB (1) GB641096A (xx)
NL (1) NL70856C (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718605A (en) * 1950-08-28 1955-09-20 Fenner Eckhard Electrical discharge tube
US4520496A (en) * 1982-07-17 1985-05-28 U.S. Philips Corporation Rotary-anode X-ray tube
WO2000003411A2 (en) * 1998-06-04 2000-01-20 Varian Medical Systems, Inc. X-ray tube target assembly with integral heat shields

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536584A1 (fr) * 1982-11-19 1984-05-25 Thomson Csf Disque en graphite pour anode tournante de tubes a rayons x

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1002390A (en) * 1908-03-28 1911-09-05 Henry Green Anode for x-ray tubes.
US1579779A (en) * 1921-04-13 1926-04-06 Westinghouse Lamp Co X-ray target
GB400022A (en) * 1932-01-07 1933-10-19 Mueller C H F Ag Improvements in or relating to x-ray tubes having a rotatable anode
US2081789A (en) * 1932-05-30 1937-05-25 Philips Nv X-ray tube having a rotary anode
US2141924A (en) * 1937-11-13 1938-12-27 Gen Electric Electrical discharge device
DE687378C (de) * 1938-10-23 1940-01-27 Siemens Reiniger Werke Akt Ges Drehbare tellerfoermige Roentgenroehrenanode aus hochbelastbarem Werkstoff
US2298335A (en) * 1940-09-10 1942-10-13 Gen Electric X Ray Corp Multiple target anode
US2311724A (en) * 1941-04-25 1943-02-23 Gen Electric X Ray Corp X-ray tube
US2336271A (en) * 1941-12-23 1943-12-07 Machlett Lab Inc Rotary anode x-ray tube
US2430800A (en) * 1943-10-02 1947-11-11 Gen Electric X Ray Corp Rotating anode construction

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1002390A (en) * 1908-03-28 1911-09-05 Henry Green Anode for x-ray tubes.
US1579779A (en) * 1921-04-13 1926-04-06 Westinghouse Lamp Co X-ray target
GB400022A (en) * 1932-01-07 1933-10-19 Mueller C H F Ag Improvements in or relating to x-ray tubes having a rotatable anode
US2081789A (en) * 1932-05-30 1937-05-25 Philips Nv X-ray tube having a rotary anode
US2141924A (en) * 1937-11-13 1938-12-27 Gen Electric Electrical discharge device
DE687378C (de) * 1938-10-23 1940-01-27 Siemens Reiniger Werke Akt Ges Drehbare tellerfoermige Roentgenroehrenanode aus hochbelastbarem Werkstoff
US2298335A (en) * 1940-09-10 1942-10-13 Gen Electric X Ray Corp Multiple target anode
US2311724A (en) * 1941-04-25 1943-02-23 Gen Electric X Ray Corp X-ray tube
US2336271A (en) * 1941-12-23 1943-12-07 Machlett Lab Inc Rotary anode x-ray tube
US2430800A (en) * 1943-10-02 1947-11-11 Gen Electric X Ray Corp Rotating anode construction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718605A (en) * 1950-08-28 1955-09-20 Fenner Eckhard Electrical discharge tube
US4520496A (en) * 1982-07-17 1985-05-28 U.S. Philips Corporation Rotary-anode X-ray tube
WO2000003411A2 (en) * 1998-06-04 2000-01-20 Varian Medical Systems, Inc. X-ray tube target assembly with integral heat shields
WO2000003411A3 (en) * 1998-06-04 2000-04-13 Varian Med Sys Inc X-ray tube target assembly with integral heat shields

Also Published As

Publication number Publication date
BE474657A (xx)
FR949546A (fr) 1949-09-01
DE807973C (de) 1951-07-09
NL70856C (xx)
GB641096A (en) 1950-08-02
CH265039A (de) 1949-11-15

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