US1927456A - X-ray tube - Google Patents

X-ray tube Download PDF

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Publication number
US1927456A
US1927456A US497859A US49785930A US1927456A US 1927456 A US1927456 A US 1927456A US 497859 A US497859 A US 497859A US 49785930 A US49785930 A US 49785930A US 1927456 A US1927456 A US 1927456A
Authority
US
United States
Prior art keywords
ray tube
anode
seams
metal
layer
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
US497859A
Other languages
English (en)
Inventor
Jonas Gottfried Bruno
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of US1927456A publication Critical patent/US1927456A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to X-ray tubes comprising an anode in which the surface struck by cathode rays is provided with seams.
  • the walls of these seams should preferably be in contact with one another in order to avoid as much as possible the harmful effect produced by the penetration of the cathode rays into the seams and to prevent these rays from causing irregularities in the anode target;
  • Figure .1 represents an elevation of the front face of an anode to which during operation in an X-ray tube a rotatory motion is imparted and with which consequentlythe focal spot moves over the active surface. More particularly with X-ray tubes comprising such an anode the invention has proved to be very useful.
  • Figure 2 represents a section through the front part of the said anode.
  • the part 1 of the anode consists of a metal having good heat conductivity such, for example, as copper.
  • a metal having good heat conductivity such, for example, as copper.
  • On this metal part is provided a layer of tungsten in the'shape of a ring 2 which is in satisfactory thermal contact with the underlayer in order to facilitate a rapid dissipation of the heat produced in the surface by the cathode rays striking thereon.
  • tungsten ring are provided in mutually perpendicular directions incisions 3 which penetrate into the copper as is distinctly visible from Figure 2, in which the right-hand half is intended to be a section through such an incision.
  • the walls of these incisions are pressed towards one another and the surface may be worked in' such manner that from the outside the incisions are hardly perceptible or even invisible.
  • An X-ray tube in which the anticathode con sists of a layer of refractory metal constituting the active surface and a backing secured to said layer, said anticathode being provided with seams extending through said layer and into said backmg.
  • An anode for an X-ray tube comprising a portion of metal of high heat conductivity and a target therein of refractory metal, the exposed op erative surface of the target being subdivided by incisions or grooves into a plurality of substantially co-planar areas.
  • An anode for an ;Xray tube comprising a disc of refractory metal'and a body of good heat conductive metal engaging one of the sides there of and in good thermal contact therewith, said disc being subdivided by narrow incisions extending through the thickness of the disc.
  • An anode for an X-ray tube consisting of a body of good heat conductive metal and an insert of refractory metal, said insert taking the form of a tessellated layer of the same metal throughout its entire area, the sides of the elements of this layer contacting with each other.
  • An anode for an X-ray tube consisting for the greater part of a copper body, and a tungsten insert in said body at its operative end, said insert having an exposed active surface divided by a network of narrow substantially closed seams.
  • An anticathode for an X-ray tube having an exposed radiating surface subdivided by seams extending inwardly from the surface for a substantial depth.
  • Anticathode for an X-ray tube having an exposed radiating surface subdivided by seams of substantial depth into separate areas, said areas being in abutting relation at said surface.
  • An X-ray tube having an electrode body provided with an exposed active surface, said body having seams extending from the active surface into said body.

Landscapes

  • X-Ray Techniques (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Solid Thermionic Cathode (AREA)
  • Microwave Tubes (AREA)
  • Package Frames And Binding Bands (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
US497859A 1930-01-16 1930-11-24 X-ray tube Expired - Lifetime US1927456A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL30403T 1930-01-16
NL34154T 1930-06-13

Publications (1)

Publication Number Publication Date
US1927456A true US1927456A (en) 1933-09-19

Family

ID=26641961

Family Applications (2)

Application Number Title Priority Date Filing Date
US497859A Expired - Lifetime US1927456A (en) 1930-01-16 1930-11-24 X-ray tube
US497860A Expired - Lifetime US1984583A (en) 1930-01-16 1930-11-24 X-ray tube in which the active surface of the electrode emitting rays is provided with seams

Family Applications After (1)

Application Number Title Priority Date Filing Date
US497860A Expired - Lifetime US1984583A (en) 1930-01-16 1930-11-24 X-ray tube in which the active surface of the electrode emitting rays is provided with seams

Country Status (7)

Country Link
US (2) US1927456A (en(2012))
BE (1) BE376007A (en(2012))
CH (1) CH153019A (en(2012))
DE (1) DE603895C (en(2012))
FR (1) FR708295A (en(2012))
GB (2) GB365285A (en(2012))
NL (2) NL34154C (en(2012))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040208288A1 (en) * 2003-01-20 2004-10-21 Eberhard Lenz X-ray anode having an electron incident surface scored by microslits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040208288A1 (en) * 2003-01-20 2004-10-21 Eberhard Lenz X-ray anode having an electron incident surface scored by microslits
US7079625B2 (en) * 2003-01-20 2006-07-18 Siemens Aktiengesellschaft X-ray anode having an electron incident surface scored by microslits

Also Published As

Publication number Publication date
GB365297A (en) 1932-01-21
GB365285A (en) 1932-01-21
NL34154C (en(2012))
CH153019A (de) 1932-02-29
FR708295A (fr) 1931-07-22
US1984583A (en) 1934-12-18
BE376007A (en(2012))
DE603895C (de) 1934-10-11
NL30403C (en(2012))

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