GB625401A - Improvements in or relating to x-ray tubes - Google Patents

Improvements in or relating to x-ray tubes

Info

Publication number
GB625401A
GB625401A GB20798/47A GB2079847A GB625401A GB 625401 A GB625401 A GB 625401A GB 20798/47 A GB20798/47 A GB 20798/47A GB 2079847 A GB2079847 A GB 2079847A GB 625401 A GB625401 A GB 625401A
Authority
GB
United Kingdom
Prior art keywords
cathode
shield
ray tubes
relating
cup
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
Application number
GB20798/47A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International 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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB625401A publication Critical patent/GB625401A/en
Expired legal-status Critical Current

Links

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
    • H01J35/06—Cathodes
    • H01J35/064—Details of the emitter, e.g. material or structure
    • 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
    • H01J35/06—Cathodes
    • H01J35/066—Details of electron optical components, e.g. cathode cups

Landscapes

  • X-Ray Techniques (AREA)

Abstract

625,401. X-ray tubes. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. July 31, 1947, No. 20798. Convention date, June 27, 1940. [Class 39 (i)] The cathode 15 of a high voltage X-ray tube is provided with an apertured shield 20 to prevent it being bombarded by positive ions. The cathode may be a circular filament of diameter greater than the diameter of the aperture 22 in the shield 20. The shield 20 may be disposed in a cylindrical focusing cup 17 having a mushroom head, the cup being connected to the cathode. The anode may be hollow and may be provided with an intake conduit 23 for the circulation of a cooling medium.
GB20798/47A 1940-06-27 1947-07-31 Improvements in or relating to x-ray tubes Expired GB625401A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US342745A US2291948A (en) 1940-06-27 1940-06-27 High voltage X-ray tube shield

Publications (1)

Publication Number Publication Date
GB625401A true GB625401A (en) 1949-06-27

Family

ID=23343099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20798/47A Expired GB625401A (en) 1940-06-27 1947-07-31 Improvements in or relating to x-ray tubes

Country Status (2)

Country Link
US (1) US2291948A (en)
GB (1) GB625401A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091243B (en) * 1955-03-19 1960-10-20 Licentia Gmbh X-ray tube with a punctiform focal point

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB701050A (en) * 1950-03-22 1953-12-16 Werner Ehrenberg Improvements in or relating to x-ray tubes
US2720607A (en) * 1952-06-23 1955-10-11 Edward L Criscuolo Sealed off, fine focus, long life, flash x-ray tube
US2961562A (en) * 1958-05-05 1960-11-22 Gen Electric Oscillation suppression in high voltage electron guns
NL287742A (en) * 1962-01-15
US3649861A (en) * 1970-09-09 1972-03-14 Picker Corp Double focus x-ray tube
NL8603264A (en) * 1986-12-23 1988-07-18 Philips Nv ROENTGEN TUBE WITH A RING-SHAPED FOCUS.
US7382862B2 (en) * 2005-09-30 2008-06-03 Moxtek, Inc. X-ray tube cathode with reduced unintended electrical field emission
US7737424B2 (en) * 2007-06-01 2010-06-15 Moxtek, Inc. X-ray window with grid structure
US7529345B2 (en) * 2007-07-18 2009-05-05 Moxtek, Inc. Cathode header optic for x-ray tube
WO2009085351A2 (en) * 2007-09-28 2009-07-09 Brigham Young University X-ray window with carbon nanotube frame
EP2190778A4 (en) 2007-09-28 2014-08-13 Univ Brigham Young Carbon nanotube assembly
US9305735B2 (en) 2007-09-28 2016-04-05 Brigham Young University Reinforced polymer x-ray window
US8498381B2 (en) 2010-10-07 2013-07-30 Moxtek, Inc. Polymer layer on X-ray window
US7702077B2 (en) * 2008-05-19 2010-04-20 General Electric Company Apparatus for a compact HV insulator for x-ray and vacuum tube and method of assembling same
US8247971B1 (en) 2009-03-19 2012-08-21 Moxtek, Inc. Resistively heated small planar filament
US7983394B2 (en) 2009-12-17 2011-07-19 Moxtek, Inc. Multiple wavelength X-ray source
US8995621B2 (en) 2010-09-24 2015-03-31 Moxtek, Inc. Compact X-ray source
US8526574B2 (en) 2010-09-24 2013-09-03 Moxtek, Inc. Capacitor AC power coupling across high DC voltage differential
US8804910B1 (en) 2011-01-24 2014-08-12 Moxtek, Inc. Reduced power consumption X-ray source
US8750458B1 (en) 2011-02-17 2014-06-10 Moxtek, Inc. Cold electron number amplifier
US8929515B2 (en) 2011-02-23 2015-01-06 Moxtek, Inc. Multiple-size support for X-ray window
US8792619B2 (en) 2011-03-30 2014-07-29 Moxtek, Inc. X-ray tube with semiconductor coating
US9076628B2 (en) 2011-05-16 2015-07-07 Brigham Young University Variable radius taper x-ray window support structure
US8989354B2 (en) 2011-05-16 2015-03-24 Brigham Young University Carbon composite support structure
US9174412B2 (en) 2011-05-16 2015-11-03 Brigham Young University High strength carbon fiber composite wafers for microfabrication
US8817950B2 (en) 2011-12-22 2014-08-26 Moxtek, Inc. X-ray tube to power supply connector
US8761344B2 (en) 2011-12-29 2014-06-24 Moxtek, Inc. Small x-ray tube with electron beam control optics
US20130322602A1 (en) * 2012-05-31 2013-12-05 General Electric Company Internal shielding x-ray tube
US9072154B2 (en) 2012-12-21 2015-06-30 Moxtek, Inc. Grid voltage generation for x-ray tube
US9184020B2 (en) 2013-03-04 2015-11-10 Moxtek, Inc. Tiltable or deflectable anode x-ray tube
US9177755B2 (en) 2013-03-04 2015-11-03 Moxtek, Inc. Multi-target X-ray tube with stationary electron beam position
US9173623B2 (en) 2013-04-19 2015-11-03 Samuel Soonho Lee X-ray tube and receiver inside mouth

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091243B (en) * 1955-03-19 1960-10-20 Licentia Gmbh X-ray tube with a punctiform focal point

Also Published As

Publication number Publication date
US2291948A (en) 1942-08-04

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