GB635873A - Improvements in and relating to electric vacuum switches of the flexible diaphragm type - Google Patents

Improvements in and relating to electric vacuum switches of the flexible diaphragm type

Info

Publication number
GB635873A
GB635873A GB4042/48A GB404248A GB635873A GB 635873 A GB635873 A GB 635873A GB 4042/48 A GB4042/48 A GB 4042/48A GB 404248 A GB404248 A GB 404248A GB 635873 A GB635873 A GB 635873A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
terminals
arm
switch
molybdenum
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
GB4042/48A
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 GB635873A publication Critical patent/GB635873A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6664—Operating arrangements with pivoting movable contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/64—Protective enclosures, baffle plates, or screens for contacts
    • H01H1/66—Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/36—Tubes with flat electrodes, e.g. disc electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0002—Construction arrangements of electrode systems

Landscapes

  • Secondary Cells (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Manufacture Of Switches (AREA)

Abstract

635,873. Distortable - container switches. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 11, 1948, No. 4042. Convention date, March 27, 1943. [Class 38 (v)] The thin metal operating diaphragm 2 of a high-voltage, high-frequency vacuum switch intended for controlling the radio circuits of aircraft or for use at sea, is coated with an alkyd resin to ensure perfect sealing of the diaphragm and render it resistant to the effects of salt-water spray and also to improve the switch insulation. The switch comprises a glass envelope 1 to which is sealed at 14 a metal terminal thimble 12 united to the diaphragm 2 by a flange 2a. A tubular arm 11 of copperplated steel is brazed to the diaphragm and carries a contact 9 of molybdenum, which is movable by the arm 11 to engage contact 7 or 8, also of molybdenum, mounted on terminals 3, 4 in re-entrant seals 5, 6. The switch is evacuated through the tubular arm 11 which is then sealed at 11a. The alkyd resin, a rosinmodified, oil-modified, glyceryl phthalate resin thinned by a solvent such as benzene or toluene, is applied to the exterior of the diaphragm 2 and over the flange 2a, and also to the exposed part of the arm 11 and portions 3a, 4a of the terminals 3, 4. The diaphragm, thimble, and terminals 3, 4 are of an iron-nickel-cobalt alloy having the same coefficient of expansion as glass, the exposed parts of the terminals being cadmium-plated to provide low resistance to high-frequency currents and'resist corrosion.
GB4042/48A 1943-03-27 1948-02-11 Improvements in and relating to electric vacuum switches of the flexible diaphragm type Expired GB635873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US480745A US2383973A (en) 1943-03-27 1943-03-27 Electric vacuum switch

Publications (1)

Publication Number Publication Date
GB635873A true GB635873A (en) 1950-04-19

Family

ID=23909195

Family Applications (2)

Application Number Title Priority Date Filing Date
GB482/44A Expired GB592261A (en) 1943-03-27 1944-01-10 Improvements in or relating to electron discharge devices
GB4042/48A Expired GB635873A (en) 1943-03-27 1948-02-11 Improvements in and relating to electric vacuum switches of the flexible diaphragm type

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB482/44A Expired GB592261A (en) 1943-03-27 1944-01-10 Improvements in or relating to electron discharge devices

Country Status (2)

Country Link
US (1) US2383973A (en)
GB (2) GB592261A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482902A (en) * 1946-01-24 1949-09-27 Hanovia Chemical & Mfg Co Choke coil
US2785259A (en) * 1953-06-18 1957-03-12 Haydon Switch Inc Switch casing
US2958720A (en) * 1955-03-25 1960-11-01 Dearborn Electronic Lab Of Del Capacitor end seal
US2843701A (en) * 1955-11-28 1958-07-15 Jennings Radio Mfg Corp Vacuum relay
US2920162A (en) * 1956-01-03 1960-01-05 Jennings Radio Mfg Corp Vacuum relay
US2923798A (en) * 1956-08-20 1960-02-02 Inst Divi Thomae Foundation Mounting for electrodes in glass vessels
BE561677A (en) * 1956-09-11
US2920168A (en) * 1957-01-24 1960-01-05 Jennings Radio Mfg Corp Coaxial switch
US3014106A (en) * 1958-03-03 1961-12-19 Jennings Radio Mfg Corp Vacuum switch
US3087037A (en) * 1960-09-23 1963-04-23 William B Huddleston Manually operated key for electronic keyer
US3270260A (en) * 1963-11-18 1966-08-30 Measurement Systems Inc Stick-operated diaphragm control
US3341805A (en) * 1965-05-27 1967-09-12 Alcon Metal Products Inc High voltage tube socket
US4249050A (en) * 1977-12-30 1981-02-03 Tokyo Shibaura Denki Kabushiki Kaisha Vacuum switch
CN111489915B (en) * 2020-04-28 2022-11-08 国网安徽省电力有限公司池州市贵池区供电公司 Vacuum switch

Also Published As

Publication number Publication date
US2383973A (en) 1945-09-04
GB592261A (en) 1947-09-12

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