GB668141A - Improvements relating to magnetrons - Google Patents

Improvements relating to magnetrons

Info

Publication number
GB668141A
GB668141A GB20433/50A GB2043350A GB668141A GB 668141 A GB668141 A GB 668141A GB 20433/50 A GB20433/50 A GB 20433/50A GB 2043350 A GB2043350 A GB 2043350A GB 668141 A GB668141 A GB 668141A
Authority
GB
United Kingdom
Prior art keywords
polepiece
magnetron
anode block
anode
magnetrons
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
GB20433/50A
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.)
THOMAS WILLIAM CERI FISHER
British Thomson Houston Co Ltd
Original Assignee
THOMAS WILLIAM CERI FISHER
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 THOMAS WILLIAM CERI FISHER, British Thomson Houston Co Ltd filed Critical THOMAS WILLIAM CERI FISHER
Priority to GB20433/50A priority Critical patent/GB668141A/en
Priority to US224096A priority patent/US2617967A/en
Publication of GB668141A publication Critical patent/GB668141A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
    • H01J25/52—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
    • H01J25/58—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode having a number of resonators; having a composite resonator, e.g. a helix
    • H01J25/587—Multi-cavity magnetrons

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Microwave Tubes (AREA)

Abstract

668,141. Magnetrons. BRITISH THOMSON-HOUSTON CO., Ltd., and FISHER, T. W..C. Aug. 17, 1950, No. 20433/50. Class 39 (i). In a multi-cavity magnetron of the kind in which the evacuated envelope of the magnetron also encloses the magnetic polepieces, the polepieces 13, 14 are centred with respect, to the cavities by being positioned within the ends of a tubular anode block 10, each polepiece being retained in the anode block by means of a cup-shaped member 23 having its smaller rim sealed to the anode block at 26, and the larger rim sealed to the polepiece at 25. Each polepiece has a shoulder 17 which abuts against the anode block to ensure correct positioning and the polepiece 14 supporting the cathode is insulated therefrom by means of a glass tube 36. Output from the magnetron is taken from the chamber 30 having a glass window 31 of a composition such as described in Specification 449,807, [Group XXIII]. The magnetron is evacuated through a tube 39. The polepiece 13 carries a tuning member 19 operated by a screw-thread 40. The construction is such that the last seals to be made, i.e. those at points 25, are effected at a region remote from the anode surfaces, which are therefore not contaminated by products arising from the formation of the seal.
GB20433/50A 1950-08-17 1950-08-17 Improvements relating to magnetrons Expired GB668141A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB20433/50A GB668141A (en) 1950-08-17 1950-08-17 Improvements relating to magnetrons
US224096A US2617967A (en) 1950-08-17 1951-05-02 Magnetron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20433/50A GB668141A (en) 1950-08-17 1950-08-17 Improvements relating to magnetrons

Publications (1)

Publication Number Publication Date
GB668141A true GB668141A (en) 1952-03-12

Family

ID=10145861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20433/50A Expired GB668141A (en) 1950-08-17 1950-08-17 Improvements relating to magnetrons

Country Status (2)

Country Link
US (1) US2617967A (en)
GB (1) GB668141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931943A (en) * 1954-09-01 1960-04-05 Jakobsbergs Elektrotekniska Fa Magnetron with variable resonance frequency

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017535A (en) * 1957-10-14 1962-01-16 English Electric Valve Co Ltd High frequency electron discharge tubes
WO2021127858A1 (en) * 2019-12-23 2021-07-01 Shenzhen United Imaging Healthcare Co., Ltd. Radiotherapy device and microwave source thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB509102A (en) * 1937-10-08 1939-07-11 Electricitatsgesellschaft Sani Improvements in vacuum electric discharge apparatus
US2406276A (en) * 1942-11-13 1946-08-20 Gen Electric Electric discharge device
US2542899A (en) * 1944-11-30 1951-02-20 Raytheon Mfg Co Cavity resonator electron discharge device
US2478534A (en) * 1944-12-13 1949-08-09 Raytheon Mfg Co Electron discharge device of the cavity resonator type
NL66078C (en) * 1946-02-12
GB643655A (en) * 1946-09-03 1950-09-27 Amherst Felix Home Thomson Improvements in or relating to magnetron electron discharge devices
US2557780A (en) * 1947-04-19 1951-06-19 Raytheon Mfg Co Cavity resonator electrondischarge device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931943A (en) * 1954-09-01 1960-04-05 Jakobsbergs Elektrotekniska Fa Magnetron with variable resonance frequency

Also Published As

Publication number Publication date
US2617967A (en) 1952-11-11

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