FR2176932B1 - - Google Patents

Info

Publication number
FR2176932B1
FR2176932B1 FR7309908A FR7309908A FR2176932B1 FR 2176932 B1 FR2176932 B1 FR 2176932B1 FR 7309908 A FR7309908 A FR 7309908A FR 7309908 A FR7309908 A FR 7309908A FR 2176932 B1 FR2176932 B1 FR 2176932B1
Authority
FR
France
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
FR7309908A
Other languages
French (fr)
Other versions
FR2176932A1 (enrdf_load_stackoverflow
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 claimed from US236299A external-priority patent/US3886194A/en
Application filed by Varian Associates Inc filed Critical Varian Associates Inc
Publication of FR2176932A1 publication Critical patent/FR2176932A1/fr
Application granted granted Critical
Publication of FR2176932B1 publication Critical patent/FR2176932B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing
FR7309908A 1972-03-20 1973-03-20 Expired FR2176932B1 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US236299A US3886194A (en) 1969-05-21 1972-03-20 N-phenoxyalkyl-L-thiocyanoalkanamides

Publications (2)

Publication Number Publication Date
FR2176932A1 FR2176932A1 (enrdf_load_stackoverflow) 1973-11-02
FR2176932B1 true FR2176932B1 (enrdf_load_stackoverflow) 1977-08-05

Family

ID=22888948

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7309908A Expired FR2176932B1 (enrdf_load_stackoverflow) 1972-03-20 1973-03-20

Country Status (4)

Country Link
US (1) US3755706A (enrdf_load_stackoverflow)
JP (1) JPS577461B2 (enrdf_load_stackoverflow)
FR (1) FR2176932B1 (enrdf_load_stackoverflow)
GB (1) GB1403172A (enrdf_load_stackoverflow)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1451956A (en) * 1973-02-16 1976-10-06 English Electric Valve Co Ltd Travelling wave tubes
US3855498A (en) * 1973-11-01 1974-12-17 Us Navy Center-pole magnetic circuit
US3881127A (en) * 1973-11-01 1975-04-29 Us Navy Bucking samarium cobalt magnets for crossed field devices
US3958147A (en) * 1975-06-06 1976-05-18 Hughes Aircraft Company Traveling-wave tube with improved periodic permanent magnet focusing arrangement integrated with coupled cavity slow-wave structure
US4114532A (en) * 1976-10-12 1978-09-19 Dataproducts Corporation Impact printer magnet assembly
JPS5631812Y2 (enrdf_load_stackoverflow) * 1976-10-25 1981-07-29
US4228416A (en) * 1978-09-15 1980-10-14 Hov-Air-Ship, Inc. Composite magnet and magnetic anchoring
JPS57127674A (en) * 1981-01-29 1982-08-07 Disco Abrasive Sys Ltd Internal peripheral blade edge manufacturing method
JPS57138577A (en) * 1981-02-17 1982-08-26 Goei Seisakusho:Kk Electroformed cutter and manufacture thereof
DE3216250C2 (de) * 1982-04-30 1985-04-25 Siemens AG, 1000 Berlin und 8000 München Wanderfeldröhre mit periodisch-permanentmagnetischem Fokussiersystem
JPS59192461A (ja) * 1983-04-13 1984-10-31 Disco Abrasive Sys Ltd 穿孔砥石製造方法
FR2545645B1 (fr) * 1983-05-03 1985-12-13 Thomson Csf Procede de fabrication d'un troncon de fourreau dit a pieces polaires incorporees pour tubes hyperfrequences
US5332948A (en) * 1992-05-13 1994-07-26 Litton Systems, Inc. X-z geometry periodic permanent magnet focusing system
US5332947A (en) * 1992-05-13 1994-07-26 Litton Systems, Inc. Integral polepiece RF amplification tube for millimeter wave frequencies
US5744910A (en) * 1993-04-02 1998-04-28 Litton Systems, Inc. Periodic permanent magnet focusing system for electron beam
US5932971A (en) * 1997-06-05 1999-08-03 Hughes Electronics Corp Optimally designed traveling wave tube for operation backed off from saturation
NL1026006C2 (nl) 2004-04-22 2005-10-25 Fei Co Deeltjes-optisch apparaat voorzien van lenzen met permanent magnetisch materiaal.
CN101461026B (zh) * 2006-06-07 2012-01-18 Fei公司 与包含真空室的装置一起使用的滑动轴承
WO2009123593A1 (en) * 2008-04-03 2009-10-08 Patrick Ferguson Hollow beam electron gun for use in a klystron
US8662187B2 (en) * 2009-08-13 2014-03-04 Baker Hughes Incorporated Permanent magnet linear motor actuated safety valve and method
US10357714B2 (en) 2009-10-27 2019-07-23 Harmonix Music Systems, Inc. Gesture-based user interface for navigating a menu
JP5835822B1 (ja) * 2014-06-30 2015-12-24 Ｎｅｃネットワーク・センサ株式会社 高周波回路システム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB785110A (en) * 1955-06-28 1957-10-23 Standard Telephones Cables Ltd Electron tube magnetic focusing device
US3215906A (en) * 1963-09-24 1965-11-02 D M Steward Mfg Company Periodic permanent magnet focusing stack
US3398315A (en) * 1965-08-19 1968-08-20 Westinghouse Electric Corp A traveling wavetube with improved thermal and magnetic circuitry
FR1522411A (fr) * 1967-03-14 1968-04-26 Csf Compensation des effets de la température dans les focalisateurs magnétiques

Also Published As

Publication number Publication date
FR2176932A1 (enrdf_load_stackoverflow) 1973-11-02
GB1403172A (en) 1975-08-28
JPS577461B2 (enrdf_load_stackoverflow) 1982-02-10
US3755706A (en) 1973-08-28
JPS496874A (enrdf_load_stackoverflow) 1974-01-22

Similar Documents

Publication Publication Date Title
FR2176932B1 (enrdf_load_stackoverflow)
CS174195B2 (enrdf_load_stackoverflow)
CS177835B2 (enrdf_load_stackoverflow)
JPS5139637B2 (enrdf_load_stackoverflow)
CS159447B1 (enrdf_load_stackoverflow)
CS166852B1 (enrdf_load_stackoverflow)
JPS4935878U (enrdf_load_stackoverflow)
JPS5350914Y2 (enrdf_load_stackoverflow)
JPS528608B2 (enrdf_load_stackoverflow)
CS158484B1 (enrdf_load_stackoverflow)
JPS4881287A (enrdf_load_stackoverflow)
CS167997B2 (enrdf_load_stackoverflow)
CS161343B1 (enrdf_load_stackoverflow)
IN138020B (enrdf_load_stackoverflow)
CS154548B1 (enrdf_load_stackoverflow)
CS158509B1 (enrdf_load_stackoverflow)
CS177932B1 (enrdf_load_stackoverflow)
JPS4965848U (enrdf_load_stackoverflow)
CS159014B1 (enrdf_load_stackoverflow)
CS173086B1 (enrdf_load_stackoverflow)
CS159020B1 (enrdf_load_stackoverflow)
JPS4952459U (enrdf_load_stackoverflow)
CS160370B1 (enrdf_load_stackoverflow)
CS161313B1 (enrdf_load_stackoverflow)
CH559473A5 (enrdf_load_stackoverflow)