US2162569A - Electric circuit interrupter - Google Patents

Electric circuit interrupter Download PDF

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Publication number
US2162569A
US2162569A US107711A US10771136A US2162569A US 2162569 A US2162569 A US 2162569A US 107711 A US107711 A US 107711A US 10771136 A US10771136 A US 10771136A US 2162569 A US2162569 A US 2162569A
Authority
US
United States
Prior art keywords
contact
electric circuit
tubular
arc
circuit interrupter
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 - Lifetime
Application number
US107711A
Other languages
English (en)
Inventor
Bauerschmidt Kuno
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US2162569A publication Critical patent/US2162569A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • My invention relates to electric circuit interrupters, more particularly to circuit interrupters oi the type wherein contact separation occurs within a closely confined arc chamber defined by walls of insulating material having gas-emitting characteristics.
  • circuit interrupters oi the type wherein contact separation occurs within a closely confined arc chamber defined by walls of insulating material having gas-emitting characteristics.
  • the insulating walls when subjected to the arc upon separation of the contacts, emit gas in sufficient quantity to cause interruption of the arc.
  • a principal object of the present invention is the provision of an improved circuit interrupter of the aforesaid type wherein the application of the gas emitted from the insulating walls to the arc is rendered more effective.
  • the structure of the electric circuit interrupter is in ----'-the -open circuit position and comprises a relatively fixed contact structure I and a coacting movable tubular contact 2.
  • the contact 2 is re- 30 ciprocally movable in a vertical direction as shown for making and breaking contact at I.
  • the fixed contact structure I as shown is of the segmental type, and in the closed circuit position engages the outer periphery of the coacting end of the tubular '35 contact.
  • the fixed contact structure is suitably mounted within a metallic housing 3, to which is connected the terminal member 4.
  • a cylindrical sleeve-like insulating member 5 is suitably secured to a depending portion 3 of the fixed contact housing and is disposed in substantial alinement with the tubular contact 2.
  • the cylindrical member is beveled at 5' for 45 the purpose of guiding the tubular contact 2 and said pin, said pin also having a comparatively close fit with respect to the tubular contact.
  • means for resiliently centering the pin comprising a collar 9 which is suitably secured to the upper end of the pin and which seats on a cylindrical bearing l0 whichis mounted in the casing 3.
  • the members 9 and I0 engage at the coacting surfaces thereof so as to form a universal bearing for the pin 6.
  • a spring at ll seated within the upper part of the casing 3 and bearing on the collar 9 tends to center the insulating pin.
  • At least one and preferably both of the insulating members 5 and 6 is composed of a material which is adapted to emit gas in appreciable quantity when subjected to the heat of an arc.
  • insulating materials having such characteristics are fiber and urea compound.
  • An electric circuit interrupter comprising relatively movable contact structure including a tubular contact and a coacting contact, a casing including a cylindrical sleeve-like member composed of insulating material fixed with respect to said coacting contact and having an inner diameter slightly greater than said tubular contact and alined in telescopic relation therewith, said' coacting contact being mounted within said casing at a closed end thereof, and a pin member composed of insulating material positioned centrally of said cylindrical member and adapted to extend within said tubular contact in the closed circuit position thereof, said insulating pin being composed of material adapted to emit gas in appreciable quantity when subjected to the arc upon separation of said contact structure, said gas being expelled from said cylindrical member in thet direction of movement of said tubular.
  • An electric circuit interrupter comprising relatively movable contact structure including a tubular contact and a coacting contact, a cylindrical sleeve-like member composed of insulating material fixed with respect to said coacting contact and adapted to receive in close fitting relationship said tubular contact in the closedcircult position thereof, a pin member composed of insulating material disposed within and centrally of said cylindrical member and adapted to extend within and centrally of said tubular contact in said closed circuit position, and means for resiliently centering said pin member with respect to slight misalinement between said pin member and tubular contact.
  • An electric circuit interrupter comprising relatively movable contact structure including a tubular contact and a coacting contact, terminal structure forming a housing for said coacting contact, means defining a closely confined arc chamber along the path of separation of said contacts comprising a cylindrical sleeve-like member of and centrally of the bore of said tubular con-- tact, at least one of said insulating members being composed of a material adapted to emit gas in appreciable quantity when subjected to the are upon separation of said contact structure.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
US107711A 1935-11-07 1936-10-26 Electric circuit interrupter Expired - Lifetime US2162569A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2162569X 1935-11-07

Publications (1)

Publication Number Publication Date
US2162569A true US2162569A (en) 1939-06-13

Family

ID=7987997

Family Applications (1)

Application Number Title Priority Date Filing Date
US107711A Expired - Lifetime US2162569A (en) 1935-11-07 1936-10-26 Electric circuit interrupter

Country Status (3)

Country Link
US (1) US2162569A (enrdf_load_stackoverflow)
AT (1) AT151606B (enrdf_load_stackoverflow)
NL (1) NL42846C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
AT151606B (de) 1937-11-25
NL42846C (enrdf_load_stackoverflow)

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