GB509000A - Improvements in and relating to electric switches - Google Patents

Improvements in and relating to electric switches

Info

Publication number
GB509000A
GB509000A GB2446/39A GB244639A GB509000A GB 509000 A GB509000 A GB 509000A GB 2446/39 A GB2446/39 A GB 2446/39A GB 244639 A GB244639 A GB 244639A GB 509000 A GB509000 A GB 509000A
Authority
GB
United Kingdom
Prior art keywords
relating
electric switches
jan
addition
houston
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
GB2446/39A
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 GB509000A publication Critical patent/GB509000A/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Organic Insulating Materials (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Abstract

509,000. Synthetic resin articles. BRITISH THOMSON-HOUSTON CO., Ltd. Jan, 24, 1939, No. 2446. Convention date, Jan. 24, 1938. Addition to 501,241. [Class 2 (iii)] [Also in Group XXXVII] In addition to the filling material for the artificial resin of the parent Specification, magnesium peroxide or other oxidizing material may be added to prevent tracking.
GB2446/39A 1937-05-29 1939-01-24 Improvements in and relating to electric switches Expired GB509000A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE204362X 1937-05-29

Publications (1)

Publication Number Publication Date
GB509000A true GB509000A (en) 1939-07-10

Family

ID=5781433

Family Applications (2)

Application Number Title Priority Date Filing Date
GB13957/38A Expired GB501241A (en) 1937-05-29 1938-05-10 Improvements in and relating to electric switches, having arc-extinguishing chambers
GB2446/39A Expired GB509000A (en) 1937-05-29 1939-01-24 Improvements in and relating to electric switches

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB13957/38A Expired GB501241A (en) 1937-05-29 1938-05-10 Improvements in and relating to electric switches, having arc-extinguishing chambers

Country Status (3)

Country Link
US (1) US2142861A (en)
CH (1) CH204362A (en)
GB (2) GB501241A (en)

Also Published As

Publication number Publication date
CH204362A (en) 1939-04-30
US2142861A (en) 1939-01-03
GB501241A (en) 1939-02-23

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