GB503305A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB503305A
GB503305A GB33075/38A GB3307538A GB503305A GB 503305 A GB503305 A GB 503305A GB 33075/38 A GB33075/38 A GB 33075/38A GB 3307538 A GB3307538 A GB 3307538A GB 503305 A GB503305 A GB 503305A
Authority
GB
United Kingdom
Prior art keywords
magnetic material
cylinder
stationary shaft
type
induction
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
GB33075/38A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB503305A publication Critical patent/GB503305A/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
    • H01J35/08—Anodes; Anti cathodes
    • H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • H01J35/101—Arrangements for rotating anodes, e.g. supporting means, means for greasing, means for sealing the axle or means for shielding or protecting the driving
    • H01J35/1017—Bearings for rotating anodes
    • H01J35/1024—Rolling bearings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/10—Drive means for anode (target) substrate
    • H01J2235/1026—Means (motors) for driving the target (anode)

Landscapes

  • X-Ray Techniques (AREA)

Abstract

503,305. R÷ntgen-ray tubes; induction motors. BRITISH THOMSON-HOUSTON CO.; Ltd. Nov. 14, 1938, No. 33075. Convention date, Nov. 13, 1937. [Class 39 (i)] [Also in Group XXXV] In X-ray tubes of the type having a rotating target, the motor for driving the target is of the induction type and comprises a light cylinder of copper &c. supported by bearings from a stationary shaft and surrounding a stationary body of magnetic material. In the arrangement described, the rotating anode 9 is carried by a sleeve 21 which is mounted on a stationary shaft 12 by means of spaced ballbearings 17'which are preferably made of the alloy described in Specification 489,477, [Group II]. The motor for driving the anode is of the induction'type and consists of a cylinder 20 of copper or other good electrically conducting non-magnetic material, a body 26 of magnetic material of low reluctance keyed to the stationary shaft 12 within the cylinder, and means outside the envelope 1 for producing a rotating magnetic field such as a laminated iron core 23 and a polyphase winding 24. In a modification, the body 26 is supported directly by the metal seal structure at the end of the envelope and carries means for centring the external stator.
GB33075/38A 1937-11-13 1938-11-14 Improvements in and relating to electric discharge devices Expired GB503305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US174388A US2141924A (en) 1937-11-13 1937-11-13 Electrical discharge device

Publications (1)

Publication Number Publication Date
GB503305A true GB503305A (en) 1939-04-04

Family

ID=22635979

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33075/38A Expired GB503305A (en) 1937-11-13 1938-11-14 Improvements in and relating to electric discharge devices

Country Status (3)

Country Link
US (1) US2141924A (en)
FR (1) FR49934E (en)
GB (1) GB503305A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE474657A (en) * 1946-07-17
US2648025A (en) * 1950-04-01 1953-08-04 Machlett Lab Inc Electron discharge device
US2640168A (en) * 1950-11-09 1953-05-26 Machlett Lab Inc Electron tube
US2671867A (en) * 1950-11-24 1954-03-09 Dunlee Corp Electrode structure for x-ray tubes
US2625664A (en) * 1951-07-25 1953-01-13 Machlett Lab Inc Electron tube
US2813210A (en) * 1954-09-13 1957-11-12 Gen Electric Rotating structure
US3502926A (en) * 1967-03-24 1970-03-24 Hitachi Ltd Rotating anode x-ray tube with magnetic damper
US20150117604A1 (en) * 2012-05-22 2015-04-30 Koninklijke Philips N.V. Balancing in an x-ray tube
CN112992600B (en) * 2019-12-17 2023-02-17 天津平高智能电气有限公司 Vacuum arc extinguish chamber vacuum degree measuring device

Also Published As

Publication number Publication date
US2141924A (en) 1938-12-27
FR49934E (en) 1939-09-25

Similar Documents

Publication Publication Date Title
GB1302549A (en)
GB1164138A (en) Improvements in or relating to Electrical Machines
GB503305A (en) Improvements in and relating to electric discharge devices
GB495813A (en) Magneto electric machines
US2433390A (en) Motor-generator
US3549923A (en) Low-speed synchronous electric motor
GB448496A (en) Improvements in and connected with the propulsion of projectiles and projectile likeconveyors for goods or passengers
GB1190035A (en) Improvements in High Speed Homopolar Machine
US3801846A (en) X-ray tube with a rotary anode
US2332044A (en) Brake for rotary anode x-ray tubes
GB1356657A (en) Superconductive electrical machines
GB990699A (en) Improvements relating to variable reluctance electrical machinery
GB456206A (en) Improvements in and relating to permanent magnet dynamo electric machines
JPH09190787A (en) Drive device for rotary anode of x-ray tube
GB608408A (en) Improvements in and relating to dynamo-electric machines
US1925626A (en) Eddy current electric motor
GB467963A (en) Improvements in and relating to alternating current dynamo electric machines
GB400435A (en) Improvements in synchronous alternating current motors particularly for talking-machine driving
GB573825A (en) Improvement in dynamo-electric machines
GB1522732A (en) Electric bipolar motor
GB541616A (en) Improved cooling means for electrical induction apparatus
GB574018A (en) Improvements in and relating to x-ray apparatus
GB185883A (en) Improvements in induction motors
GB412941A (en) Improvements in or relating to television and like apparatus
GB212619A (en) Improvements in and relating to dynamo-electric machines