FR1131342A - Improvements in manufacturing processes for electron emission electrodes - Google Patents

Improvements in manufacturing processes for electron emission electrodes

Info

Publication number
FR1131342A
FR1131342A FR1131342DA FR1131342A FR 1131342 A FR1131342 A FR 1131342A FR 1131342D A FR1131342D A FR 1131342DA FR 1131342 A FR1131342 A FR 1131342A
Authority
FR
France
Prior art keywords
electron emission
manufacturing processes
emission electrodes
electrodes
electron
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
Other languages
French (fr)
Inventor
Georges Pietri
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.)
Electronique & Physique
Laboratoires dElectronique Philips SAS
Original Assignee
Electronique & Physique
Laboratoires dElectronique et de Physique Appliquee
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 Electronique & Physique, Laboratoires dElectronique et de Physique Appliquee filed Critical Electronique & Physique
Application granted granted Critical
Publication of FR1131342A publication Critical patent/FR1131342A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/04—Electrodes
    • H01J40/06—Photo-emissive cathodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/067—Starting the arc
    • B23K9/0672—Starting the arc without direct contact between electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Arc Welding In General (AREA)
FR1131342D 1959-04-27 1955-09-20 Improvements in manufacturing processes for electron emission electrodes Expired FR1131342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US809033A US3030495A (en) 1959-04-27 1959-04-27 Initiation and maintenance of power arcs

Publications (1)

Publication Number Publication Date
FR1131342A true FR1131342A (en) 1957-02-20

Family

ID=25200388

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1131342D Expired FR1131342A (en) 1959-04-27 1955-09-20 Improvements in manufacturing processes for electron emission electrodes
FR818664A Expired FR1248784A (en) 1959-04-27 1960-02-15 Method and devices for igniting electric arcs

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR818664A Expired FR1248784A (en) 1959-04-27 1960-02-15 Method and devices for igniting electric arcs

Country Status (4)

Country Link
US (1) US3030495A (en)
DE (1) DE1131342B (en)
FR (2) FR1131342A (en)
GB (1) GB930211A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260890A (en) * 1963-05-24 1966-07-12 Air Reduction Power arc initiation by preheat and capacitor discharge
GB1106686A (en) * 1964-12-15 1968-03-20 British Oxygen Co Ltd Gas shielded electric arc welding
US10675699B2 (en) * 2015-12-10 2020-06-09 Illinois Tool Works Inc. Systems, methods, and apparatus to preheat welding wire
US10766092B2 (en) 2017-04-18 2020-09-08 Illinois Tool Works Inc. Systems, methods, and apparatus to provide preheat voltage feedback loss protection
US10870164B2 (en) 2017-05-16 2020-12-22 Illinois Tool Works Inc. Systems, methods, and apparatus to preheat welding wire
US11247290B2 (en) 2017-06-09 2022-02-15 Illinois Tool Works Inc. Systems, methods, and apparatus to preheat welding wire
EP3634682B1 (en) 2017-06-09 2023-08-23 Illinois Tool Works, Inc. Contact tip with screw threads with longitudinal slots for gas flow, and a head to enable unthreading ; welding torch with such contact tip
CA3066619C (en) 2017-06-09 2022-07-19 Illinois Tool Works Inc. Welding torch with a first contact tip to preheat welding wire and a second contact tip
US11344964B2 (en) 2017-06-09 2022-05-31 Illinois Tool Works Inc. Systems, methods, and apparatus to control welding electrode preheating
US11590597B2 (en) 2017-06-09 2023-02-28 Illinois Tool Works Inc. Systems, methods, and apparatus to preheat welding wire
US11524354B2 (en) 2017-06-09 2022-12-13 Illinois Tool Works Inc. Systems, methods, and apparatus to control weld current in a preheating system
US11020813B2 (en) 2017-09-13 2021-06-01 Illinois Tool Works Inc. Systems, methods, and apparatus to reduce cast in a welding wire
CN113165097B (en) 2018-08-31 2023-11-03 伊利诺斯工具制品有限公司 Submerged arc welding system and submerged arc welding torch for resistively preheating electrode wire
US11014185B2 (en) 2018-09-27 2021-05-25 Illinois Tool Works Inc. Systems, methods, and apparatus for control of wire preheating in welding-type systems
WO2020132251A2 (en) 2018-12-19 2020-06-25 Illinois Tool Works Inc. Systems, methods and apparatus to preheat welding wire
US11772182B2 (en) 2019-12-20 2023-10-03 Illinois Tool Works Inc. Systems and methods for gas control during welding wire pretreatments
US20210187651A1 (en) * 2019-12-20 2021-06-24 Illinois Tool Works Inc. Systems and methods for gas control during welding wire pretreatments

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2179108A (en) * 1937-06-12 1939-11-07 Borg Warner Nozzle for arc-welding machine
CH226725A (en) * 1940-04-18 1943-04-30 Gasaccumulator Svenska Ab Method and device for arc welding.
US2329977A (en) * 1941-10-09 1943-09-21 Nita Carol Brunberg Welding machine
US2475835A (en) * 1943-09-03 1949-07-12 Hartford Nat Bank & Trust Co Method of electric arc welding
US2405673A (en) * 1944-01-20 1946-08-13 Linde Air Prod Co Electric welding
US2586516A (en) * 1949-02-12 1952-02-19 Gen Electric Inert gas arc welding electrode
US2558102A (en) * 1949-06-11 1951-06-26 Westinghouse Electric Corp Arc welding system
US2685632A (en) * 1951-07-17 1954-08-03 Union Carbide & Carbon Corp Gas blanketed arc welding torch
US2868948A (en) * 1954-01-26 1959-01-13 Union Carbide Corp Metal arc welding
US2867730A (en) * 1957-11-14 1959-01-06 Air Reduction Arc welding apparatus

Also Published As

Publication number Publication date
FR1248784A (en) 1960-12-23
GB930211A (en) 1963-07-03
US3030495A (en) 1962-04-17
DE1131342B (en) 1962-06-14

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