US3189714A - Circuit breaker with slidably removable arc extinction chamber - Google Patents

Circuit breaker with slidably removable arc extinction chamber Download PDF

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Publication number
US3189714A
US3189714A US103453A US10345361A US3189714A US 3189714 A US3189714 A US 3189714A US 103453 A US103453 A US 103453A US 10345361 A US10345361 A US 10345361A US 3189714 A US3189714 A US 3189714A
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US
United States
Prior art keywords
sidewalls
circuit breaker
assembly
arc extinction
chamber
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
US103453A
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English (en)
Inventor
Bonnard Roger
Orion Gaston
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Application granted granted Critical
Publication of US3189714A publication Critical patent/US3189714A/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/345—Mounting of arc chutes

Definitions

  • the invention achieves the objective noted in a very simple fashion, by dividing the chamber as a whole into two separable parts, one of which, and by preference the upper part, being bodily removable from the lower part by a simple forward sliding motion.
  • the chamber side plates themselves are divided, substantially in a horizontal plane, and the mating edges of the side plates in said plane are formed with rabbets, so that the upper part of the extinction chamber can slide forwardly on the lower, just as a drawer slides along its rails.
  • a quick-releasable but secure fastener serves to hold the upper section of the arc chamber in its condition of use, but permits very easy disassembly for inspection or maintenance work.
  • FIG. 1 is a side elevational view of the arc-extinction chamber portion of a circuit breaker.
  • FIG. 2 is a front elevation view thereof.
  • numeral 1 designates the upper (movable) section of the arc-extinction chamber
  • numeral 2 indicates the lower section which is aflixed to the framework of the breaker as a whole.
  • Part or section 1 contains a plurality of metal plates 3 forming flame-cooling screens and intended to de-ionize gases escaping upwardly through the chamber, as well understood by those skilled in the art.
  • Part 1 also carries with it a section 4 containing additional flame-cooling plates 5.
  • the upper part 1 includes two main or side plates 6 and 7 formed of electrical insulating material, while the lower section 2 includes a similar pair of side plates 8 and 9.
  • the plates 6 and 8 would form a single side plate, as would plates 7 and 9.
  • the line of division or separation of the side plate structures lies in the horizontal plane, and the mating edges of the upper and lower plates are formed with the rabbets 10 and 11 (see especially FIG. 2) so that the movable or slidable upper chamber section 1 can be slid forwardly along the rails provided by the interfitting plate edges.
  • the lower chamber section 2 is, as stated, fixed to the remainder of the circuit breaker mechanism by a support or bracket 12.
  • a tongue 13 having a limited flexibility is mounted between bracket 12 and the lower section 2, and carries a taper-tipped locating pin 14 which aids in guiding and locating the upper section 1, as it is pushed back into seated position, by entering a recess 15 in the back plate of the latter.
  • Lower section 2 includes, in the example being described, the two are horns 16 and 17, the first of these being connected, by a conductor 18, to the winding of a blow-out coil 19.
  • a pair of spring clamp devices 23 are mounted on the opposite side plates 8 and 9, for example, as by passing through rotatable studs 24 with their extremities received in holes in fixed studs such as 26.
  • a spring and washer assembly 28 for each clamp urges it leftward in FIG. 1, so that an intermediate hooked part 30 will urge the side plates 6 and 7 of the sliding section in that direction, as by engaging in notches 32 in the forward edges of such plates.
  • Turned-over forward ends of the clamps enable them to be lifted forward, against the pressure of the springs, so that their tail ends withdraw from the fixed studs 26 allowing the clamps to be turned downwardly for free removal of the section 1 in a forward direction.
  • pin 14 assures that the tail end (at the left) will be positioned with the rabbets in engagement.
  • a circuit breaker including a fixed and a movable contact, said breaker having two superposed assemblies in horizontal rectilinear sliding relation with one another, the uppermost assembly including a removable arc extinction structure comprising two insulating sidewalls and a plurality of plates connected between said sidewalls, the lowermost assembly having mounted therein at least one of said contacts and including two insulating sidewalls respectively parallel to said first-mentioned pair of sidewalls, rabbeted edges on cooperating sidewalls supporting and guiding said first-mentioned sidewalls for horizontal removal of said are extinction structure, and means for releasably securing the uppermost assembly upon the lowermost assembly.
  • a circuit breaker in accordance with claim 1 in which said securing means includes at least one spring clamp positioned normally to exert a downward and rearward force upon the uppermost assembly.
  • a circuit breaker as claimed in claim 1 wherein said securing means further includes a pair of spring clamp devices mounted on opposite sides of said lowermost assembly and means for urging said clamps for engagement with said uppermost assembly.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
US103453A 1960-04-20 1961-04-17 Circuit breaker with slidably removable arc extinction chamber Expired - Lifetime US3189714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR4238A FR1265858A (fr) 1960-04-20 1960-04-20 Chambres de coupure

Publications (1)

Publication Number Publication Date
US3189714A true US3189714A (en) 1965-06-15

Family

ID=39244699

Family Applications (1)

Application Number Title Priority Date Filing Date
US103453A Expired - Lifetime US3189714A (en) 1960-04-20 1961-04-17 Circuit breaker with slidably removable arc extinction chamber

Country Status (5)

Country Link
US (1) US3189714A (en(2012))
BE (1) BE602428A (en(2012))
DE (1) DE1198897B (en(2012))
FR (1) FR1265858A (en(2012))
NL (1) NL203500A (en(2012))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218596A (en) * 1978-01-16 1980-08-19 Gould Inc. Circuit breaker molded housing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE561334A (en(2012)) *
US1398981A (en) * 1919-12-04 1921-12-06 Gen Electric Disruption of electric arcs
US2646481A (en) * 1947-01-11 1953-07-21 Ite Circuit Breaker Ltd High-voltage circuit breaker
US2866043A (en) * 1955-08-23 1958-12-23 Westinghouse Electric Corp Circuit breaker
DE1056697B (de) * 1958-06-27 1959-05-06 Siemens Ag Elektrischer Schalter mit Loeschkammer
FR1211435A (fr) * 1957-07-19 1960-03-16 Sachsenwerk Licht & Kraft Ag Disjoncteur à extinction de l'arc dans des chambres à arc
US2967921A (en) * 1959-08-12 1961-01-10 Ensign Electric & Mfg Co Quick detachable arc chute assembly for contactors

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1053067B (de) * 1958-06-26 1959-03-19 Siemens Ag Elektrischer Leistungsschalter mit Loeschkammer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE561334A (en(2012)) *
US1398981A (en) * 1919-12-04 1921-12-06 Gen Electric Disruption of electric arcs
US2646481A (en) * 1947-01-11 1953-07-21 Ite Circuit Breaker Ltd High-voltage circuit breaker
US2866043A (en) * 1955-08-23 1958-12-23 Westinghouse Electric Corp Circuit breaker
FR1211435A (fr) * 1957-07-19 1960-03-16 Sachsenwerk Licht & Kraft Ag Disjoncteur à extinction de l'arc dans des chambres à arc
DE1056697B (de) * 1958-06-27 1959-05-06 Siemens Ag Elektrischer Schalter mit Loeschkammer
US2967921A (en) * 1959-08-12 1961-01-10 Ensign Electric & Mfg Co Quick detachable arc chute assembly for contactors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218596A (en) * 1978-01-16 1980-08-19 Gould Inc. Circuit breaker molded housing

Also Published As

Publication number Publication date
NL203500A (en(2012))
DE1198897B (de) 1965-08-19
FR1265858A (fr) 1961-07-07
BE602428A (fr) 1961-07-31

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