US2493606A - X-ray apparatus - Google Patents

X-ray apparatus Download PDF

Info

Publication number
US2493606A
US2493606A US673722A US67372246A US2493606A US 2493606 A US2493606 A US 2493606A US 673722 A US673722 A US 673722A US 67372246 A US67372246 A US 67372246A US 2493606 A US2493606 A US 2493606A
Authority
US
United States
Prior art keywords
ray
cathode
housing
target
ray apparatus
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
US673722A
Inventor
Waterton Frank
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.)
General Electric Co
Original Assignee
General Electric 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
Priority to GB1473245A priority Critical patent/GB640694A/en
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US2493606A publication Critical patent/US2493606A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00X-ray tubes
    • H01J35/24Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • H01J35/30Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by deflection of the cathode ray
    • H01J35/305Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by deflection of the cathode ray by using a rotating X-ray tube in conjunction therewith

Description

mented Jan. 3, 195o A. 2,493,606

UNITED STATES 'PATENT OF FICE' l X-RAY APPARATUS Frank Waterton, Manchester, -England, assgnor, Aby mesne assignments, to General Electric Company, a corporation of New York Application .June 11, 1946; SerialN;o.'67-3,',7r22 In Great Britain J unell,` 1945 2 claims. (C1. 25o-148') 1 i 2 The presentinventionrelates to X-ray apparahousing 1I. and the fixed member of a roller beartus which is constructed to be capable `of susing 9 is mounted directly on the Wall of the tained and `powerful output of X-rays for diaghousingl. The cathode and anode assemblies are nostic, crystallographic, industrial or other purmounted on a driving shaft II which is connectposes In such apparatusit is necessary to proed for rotation toan yelectric motor I2, the latter vide against excessive heating of `the target area being supported as indicated on Wall extensions which may cause fusion and Vaporation of target I3 of the enclosing housing. The motor is inmetal. The .object of the invention is toprovide Sula-ted from the X-ra-y cathode by .an insulated an limproved apparatus wherein constant .shiitcoupling I 4, The space surrounding the motor ing ofthe .area vof impingement of the cathode lo II2 and the Icoupling I4 may or may not be filled rays on thetarget occurs, thus increasing the area withI insulating liquid` of- X-iay ygeneration on the `target and .conse- The `cathode assembly comprises a funnelquently of heat dissipation without increasing the shaped envelope I5l which is ysupported Within a size of--thefocal-spot; cradle I-G of" similar shape. The outer thin rim The mpiOVed X-iay equipment f the present 15 of the ared'endof the metal` envelope 'I5 is sealed inventionis oonstructed'to provide `for simultanetothe glass insulator `TJ.v On the small bore ous rotation of both the cathode and the anode tubular end of the rotating cradle It aremou-ntstructures Within a stationary sealed housing coned the electric `rotor coils Hv and the magnetic taining an insulating uid- My inVeni'fiOn d150 incore lil" of an electric generator. The stator coils cludes improvedstructural features, such as prot8 andthe'annular'xed magnetic core I8 of the vision of means within the housing fOr defleine genera-terme lmounted on the wall or the envelope the beam of cathode rays out of its normal axial I, the core having inwardly directed salient field POSiiiDn- Wilendiie benin 0f iihode rays S held poles carrying the exciting windings. An electric Siilinafy in 2 deiiei'led' POSii'fiOn and the and@ current of suitable voltage for heating the cathrotates the heating eiect of the focal area is disode filamenti@ to electron emitting temperature DeilSed'OVeia reiaiileiyiarge annular area on the isA furnished by the generator during rotation. target whereby the iOad capacity 0f the Xeray The generator is connected to the-cathode by conapparatus becomes Substantially greater than duc-tors l2.1- and .22s, the former being shown lonly that of .an apparatus with .a xed focal area in part las the "circuit is completed 'through the kOther features of novelty in the improved .5o mei-,amc cra/dile |.3 X-ray apparatus described herein will be pointed Advantageously the X-ray tube is releasably out in the appended @I aiInS- secured in its cradle I6, for example, by screwing As will appear hereinafter one of the novel feathe cathode end of the cathode assembly into a tures of the present device Consists in the DTO" correspondingly screw-threaded portion of the vision of means for heailng the Cathode by Cufcradle I6. One end of the filament is connected rent generated Within the enclosing envelope by With said screw-threaded part of the envelo e a generator which is activated by the rotation of which in tum is @armed The other end of an X-ray generating device Novelty target C001' filament is connected to a terminal clip 23 adapting constructions also are included.

ed to be engaged by a spring-pressed contact 24 The accompanymg drawing 1s a longltudmal 40 which is connected to one lead of the rotor windsection of an embodiment of my invention.

This drawing shows a sealed housing consisting mgl: the other lead of the latter bemg earthwof a tubular main portion I and an end cap 2 he anoie may be Constructed as Shown of an which is bolted to the portion I as indicated at mwardly dlrectefi Substantlauy Cup'sha'ped mem 3 and The housing may consist of metal] or 45 ber, which conslsts partly of a shell 6 of copper, other suitable material. In the tubular portion I or other metal o f good heat Conductivity Sufis mounted a rotatable X-ray structure consisting rounding circulating Varies 25 and a Cathode-ray 0f a cathode assembly 5 and an anode assembly recelvmg layer 21 of tungsten, or other suitable The assemblies are mounted on a shaft and refractory metal. Itis also contemplated to supare connected to one another at the anode end plement the tungsten fing, by other metal targets,

by a reentrant insulator 'I which ordinarily confoi' example Chromium, a ferrOuS ailOy, 0r even a sists of glass, thereby forming a sealed envelope. Coppel Surface, and t0 arrange for the electron This rotatable X-ray device is supported on bearbeam t0 be mOi/ed t0 a desired target Surface by ings 8 and 9. The sleeve bearing 8 is supported on altering the OrientaiOn 0f a magnetic coil 28 a diaphragm I0 extending from the walls of the 65 whereby the electron beam s focussed and deected or by` altering the excitation of the coil 28.

cuit is completed through the grounded casing I.

The space within the external casing is filled with mineral oil or other suitable insulating liquid which envelops the rotating X-ray device. Heat l is abstracted by circulation of a cooling medium through the cooling coil 35 which is immersed in the cooling medium. Attached to the anode 5 and thus rotating with it are disposed radial Vanes 26 forming an impeller adapted to enforce circulation of oil through the tubular bale 36 against the back of the anode. The oil may be arranged to pass into the interior of the hollow baille 25 by openings 36 and from thence out through opening 39 into the narrow space between th-e baille 36 and the reentrant tubular attachment which supportsrthe anode. Bale 36 is supported from conductor 3| by radial vanes 31. Advantageously the X-ray transmitting windows 40 in the envelope I5, the cradle I6 and the housing I are disposed to be substantially parallel with the axis of rotation of the co-operating electrodes. Preferably the surface of the target is acutely inclined with respect to th-e tube axis through an angle approaching 90. Although the focal spot is attenuated by the angle at which the electron beam strikes the target so as to be relatively long in a radial direction, nevertheless it subtends a relatively small angle when viewed from the X-ray window to give the eect of a. focal spot small in all directions. The result is that the penumbra at the edges of the shadows cast by the X-ray beam will be small. y

Various changes may be made in the described apparatus Without departing from my invention.

device, a motor Within said housing arranged to Y rotate said device, and a generator located within vsaid housing and having a rotor mechanically connected to said motor and electrical connections for furnishing current from said generator to a cathode of said X-ray device.

2. An X-ray apparatus comprising the combination of a sealed housing, an X-ray device rotatably mounted therein having co-operating electrodes having respectively a cathode and target functions, a liquid insulating medium surrounding said device, a motor also contained within said housing mechanically connected to said X-ray device for rotation thereof, means contained in said housing for delecting from a normal path an electron dischargein said X-ray device whereby X-rays are generated from successive areas of said target electrode and an e1ectric generator also located in said housing and being Yoperatively disposed and connected to furnish current for heating the cathode of said X-ray device. l

FRANK WATERTON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Great Britain Jan. 2l, 1932

US673722A 1945-06-11 1946-06-01 X-ray apparatus Expired - Lifetime US2493606A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1473245A GB640694A (en) 1945-06-11 1945-06-11 Improvements in x-ray apparatus

Publications (1)

Publication Number Publication Date
US2493606A true US2493606A (en) 1950-01-03

Family

ID=10046500

Family Applications (1)

Application Number Title Priority Date Filing Date
US673722A Expired - Lifetime US2493606A (en) 1945-06-11 1946-06-01 X-ray apparatus

Country Status (2)

Country Link
US (1) US2493606A (en)
GB (1) GB640694A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653807A (en) * 1949-03-18 1953-09-29 Jeffrey Mfg Co Kerf cutting mining machine, including mechanism for removing kerf cuttings therefrom
US2692340A (en) * 1951-09-09 1954-10-19 Hartford Nat Bank & Trust Co Unipolar x-ray tube provided in an oil-filled container
US3331978A (en) * 1962-05-28 1967-07-18 Varian Associates Electron beam x-ray generator with movable, fluid-cooled target
US4068127A (en) * 1976-07-08 1978-01-10 The United States Of America As Represented By The Department Of Health, Education And Welfare X-ray generating apparatus comprising means for rotating the filament
WO1982003522A1 (en) * 1981-04-02 1982-10-14 Arthur H Iversen Liquid cooled anode x-ray tubes
US4622687A (en) * 1981-04-02 1986-11-11 Arthur H. Iversen Liquid cooled anode x-ray tubes
US4788705A (en) * 1984-12-20 1988-11-29 Varian Assoicates, Inc. High-intensity X-ray source
US4821305A (en) * 1986-03-25 1989-04-11 Varian Associates, Inc. Photoelectric X-ray tube
US4878235A (en) * 1988-02-25 1989-10-31 Varian Associates, Inc. High intensity x-ray source using bellows
US5018181A (en) * 1987-06-02 1991-05-21 Coriolis Corporation Liquid cooled rotating anodes
US5105456A (en) * 1988-11-23 1992-04-14 Imatron, Inc. High duty-cycle x-ray tube
US5173931A (en) * 1991-11-04 1992-12-22 Norman Pond High-intensity x-ray source with variable cooling
US6252934B1 (en) 1999-03-09 2001-06-26 Teledyne Technologies Incorporated Apparatus and method for cooling a structure using boiling fluid
US20080284525A1 (en) * 2007-05-15 2008-11-20 Teledyne Technologies Incorporated Noise canceling technique for frequency synthesizer
US20090261925A1 (en) * 2008-04-22 2009-10-22 Goren Yehuda G Slow wave structures and electron sheet beam-based amplifiers including same
US20100128848A1 (en) * 2008-11-21 2010-05-27 General Electric Company X-ray tube having liquid lubricated bearings and liquid cooled target
US9202660B2 (en) 2013-03-13 2015-12-01 Teledyne Wireless, Llc Asymmetrical slow wave structures to eliminate backward wave oscillations in wideband traveling wave tubes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993055A (en) * 1988-11-23 1991-02-12 Imatron, Inc. Rotating X-ray tube with external bearings

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365432A (en) * 1930-04-24 1932-01-21 Siemens Reiniger Veifa Electric discharge tubes
US2040156A (en) * 1934-11-30 1936-05-12 Westinghouse Lamp Co Shockproof x-ray tube
US2090582A (en) * 1934-02-09 1937-08-17 Gen Electric X Ray Corp X-ray tube
US2121630A (en) * 1936-05-11 1938-06-21 Gen Electric X Ray Corp X-ray apparatus
US2222549A (en) * 1937-12-23 1940-11-19 Hartford Nat Bank & Trust Co X-ray tube
US2261215A (en) * 1940-05-09 1941-11-04 Hanovia Chemical & Mfg Co Ultraviolet irradiator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365432A (en) * 1930-04-24 1932-01-21 Siemens Reiniger Veifa Electric discharge tubes
US2090582A (en) * 1934-02-09 1937-08-17 Gen Electric X Ray Corp X-ray tube
US2040156A (en) * 1934-11-30 1936-05-12 Westinghouse Lamp Co Shockproof x-ray tube
US2121630A (en) * 1936-05-11 1938-06-21 Gen Electric X Ray Corp X-ray apparatus
US2222549A (en) * 1937-12-23 1940-11-19 Hartford Nat Bank & Trust Co X-ray tube
US2261215A (en) * 1940-05-09 1941-11-04 Hanovia Chemical & Mfg Co Ultraviolet irradiator

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653807A (en) * 1949-03-18 1953-09-29 Jeffrey Mfg Co Kerf cutting mining machine, including mechanism for removing kerf cuttings therefrom
US2692340A (en) * 1951-09-09 1954-10-19 Hartford Nat Bank & Trust Co Unipolar x-ray tube provided in an oil-filled container
US3331978A (en) * 1962-05-28 1967-07-18 Varian Associates Electron beam x-ray generator with movable, fluid-cooled target
US4068127A (en) * 1976-07-08 1978-01-10 The United States Of America As Represented By The Department Of Health, Education And Welfare X-ray generating apparatus comprising means for rotating the filament
WO1982003522A1 (en) * 1981-04-02 1982-10-14 Arthur H Iversen Liquid cooled anode x-ray tubes
US4622687A (en) * 1981-04-02 1986-11-11 Arthur H. Iversen Liquid cooled anode x-ray tubes
US4788705A (en) * 1984-12-20 1988-11-29 Varian Assoicates, Inc. High-intensity X-ray source
US4821305A (en) * 1986-03-25 1989-04-11 Varian Associates, Inc. Photoelectric X-ray tube
US5018181A (en) * 1987-06-02 1991-05-21 Coriolis Corporation Liquid cooled rotating anodes
US4878235A (en) * 1988-02-25 1989-10-31 Varian Associates, Inc. High intensity x-ray source using bellows
US5105456A (en) * 1988-11-23 1992-04-14 Imatron, Inc. High duty-cycle x-ray tube
US5173931A (en) * 1991-11-04 1992-12-22 Norman Pond High-intensity x-ray source with variable cooling
WO1993009560A1 (en) * 1991-11-04 1993-05-13 Norman Pond High-intensity x-ray source with variable cooling
US5295175A (en) * 1991-11-04 1994-03-15 Norman Pond Method and apparatus for generating high intensity radiation
US6252934B1 (en) 1999-03-09 2001-06-26 Teledyne Technologies Incorporated Apparatus and method for cooling a structure using boiling fluid
US20080284525A1 (en) * 2007-05-15 2008-11-20 Teledyne Technologies Incorporated Noise canceling technique for frequency synthesizer
US7656236B2 (en) 2007-05-15 2010-02-02 Teledyne Wireless, Llc Noise canceling technique for frequency synthesizer
US20090261925A1 (en) * 2008-04-22 2009-10-22 Goren Yehuda G Slow wave structures and electron sheet beam-based amplifiers including same
US8179045B2 (en) 2008-04-22 2012-05-15 Teledyne Wireless, Llc Slow wave structure having offset projections comprised of a metal-dielectric composite stack
US20100128848A1 (en) * 2008-11-21 2010-05-27 General Electric Company X-ray tube having liquid lubricated bearings and liquid cooled target
US9202660B2 (en) 2013-03-13 2015-12-01 Teledyne Wireless, Llc Asymmetrical slow wave structures to eliminate backward wave oscillations in wideband traveling wave tubes

Also Published As

Publication number Publication date
GB640694A (en) 1950-07-26

Similar Documents

Publication Publication Date Title
US5105456A (en) High duty-cycle x-ray tube
KR0176876B1 (en) Magnetron
Coolidge A powerful Röntgen ray tube with a pure electron discharge
EP0564293B1 (en) Ring tube X-ray source
EP0186937B1 (en) Rotating anode x-ray tube
US2291948A (en) High voltage X-ray tube shield
EP2179436A2 (en) Compact high voltage x-ray source system and method for x-ray inspection applications
US2412824A (en) Magnetron
GB555825A (en) Improvements in high frequency apparatus embodying electron discharge tubes
US4943989A (en) X-ray tube with liquid cooled heat receptor
US1946288A (en) Electron discharge device
US2111412A (en) X-ray apparatus
US5703926A (en) X-radiator with constraint-cooled rotating anode
US2305781A (en) Vacuum electric apparatus
EP0187020B1 (en) High-intensity x-ray source
JP5713832B2 (en) Radiation generator and radiation imaging apparatus using the same
JPH01272037A (en) Air-cooling metal ceramic x-ray tube structure
US2502070A (en) Getter for induction flashing
GB1282412A (en) Dynamo electric machines
US4764947A (en) Cathode focusing arrangement
US2798963A (en) Self-regulating X-ray tube
US5521936A (en) Radial laser diode array
EP0330336B1 (en) High intensity X-ray source using bellows
GB2055432A (en) Rotary-anode x-ray tube having an axial magnetic bearing and a radial sleeve bearing
JPS5289088A (en) Rotary anode xxray tube with electromagnetic bearing