US2230277A - Circuit breaker - Google Patents

Circuit breaker Download PDF

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Publication number
US2230277A
US2230277A US214996A US21499638A US2230277A US 2230277 A US2230277 A US 2230277A US 214996 A US214996 A US 214996A US 21499638 A US21499638 A US 21499638A US 2230277 A US2230277 A US 2230277A
Authority
US
United States
Prior art keywords
cover
plug
socket
unit
threaded
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
US214996A
Other languages
English (en)
Inventor
Volker Emil
Kobligk Kurt
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.)
Deutsche Waffen und Munitionsfabriken AG
Original Assignee
Deutsche Waffen und Munitionsfabriken AG
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 Deutsche Waffen und Munitionsfabriken AG filed Critical Deutsche Waffen und Munitionsfabriken AG
Application granted granted Critical
Publication of US2230277A publication Critical patent/US2230277A/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
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/042—Explosion-proof cases

Definitions

  • 'I'his invention relates to an electric circuit breaker or switch for rooms in which combustible mixtures of air and gas vapours, dust or the like are present, for example, in mines, chemical factories, mills and the like.
  • Another object of the invention is to provide circuit breakers of the kind referred to which are very simple, cheap and compact.
  • the plug socket I is surroundedby a exible cover, for example, a corrugated tubular body 2 of resilient material, for instance, a metal bellows, secured to a base plate 3, through which the cable 4 is introduced by means of a packing 5.
  • the tube 2 is provided with a top closure plate 6 which is formed with a flange having exterior thread and an interior collar for reception of a packing 1.
  • 'I'he plug unit 8 is also tted with a packing III to introduce the cable 9.
  • an interiorly threaded member I I the plug unit 8 can be tightly pressed against therpacking 1.
  • the whole unit is surrounded by a protective casing I2.
  • a nose I3 of plate 6 is provided to be guided in a slot I4 of the casing.
  • a key 26 may be provided between the plug unit 8 and the closure plate 8 to ensure correct relative position of the said parts.
  • one or more spring actuated locking members I5 are provided, for example, at the wall of the protective casing I2 which locking members are pressed aside by screwing down the member II, to such an extent that the cover plate 6 may pass and the plug unit be inserted into the plug socket.
  • one or more similar locking members 22 may 'be provided which by engagement with slots 2l' retain .(Cl. 20D-168) the cover plate in its lower position and are adapted to be released by depressing their knobs 23, if the coupling is to be disconnected.
  • the portion of the device including casing I2, plate 6, tube 2 and the plug socket I comprises a current outlet connection adapted to receive plug units from various appliances.
  • socket I is secured to the base plate 3 and to the casing I2 as a xed assembly, and the plug unit 8 together with the member I I is removable and interchangeable with similar plug units and insertable in other socket assemblies similar to that shown.
  • the plug unit 1s removed, after disconnection from socket I within the enclosure, by unscrewing member II which frees the plug unit 8, key 26 being movable therewith in a slot in the flange on plate 6.
  • the key 26 Upon reinsertion of a plug unit 8, the key 26 is first aligned with its slot and the unit is then clamped against the packing 'I by screwing down member II. Closure of the connections between pins 2l and sleeves 25 is prevented by stop I5 until member I I has been sufficiently tightened to seal the mounting of the plug unit at packing 1 and displace the locking member I5. The plug unit 8 is then free to be depressed for connection of pins 2'I in sleeves 25 within the air-tight enclosure aorded by the tube 2 and the otherwise sealed openings.
  • the apparatus of our 'invention may be employed in the form thus described or may also be provided with means for introducing an inert preventive gas within the enclosure as hereinafter described, for greater safety.
  • the said construction of the device a perfectly closed space is formed within the cover 2 which does not permit any gas mixtures to enter.
  • a mixture is already present in the said space when the plug is inserted which might be ignited within the cover and possibly cause explosion of the device whereby further vapours in the surrounding atmosphere might be ignited.
  • the space within the cover 2 may be connected to a supply duct I6 for compressed air or protective gas so as to feed fresh air or protective gas to this space and force the explosive mixture out through a blowolf valve I1.
  • a valve I8 under action of a spring I9 mayserve to shut 0E the supply duct I6 in the non-operative condition of the device and to admit air or protective gas only when the plug is inserted, by depression of an upwardly extending rod 20 on the valve I8 co-actlng with a. downwardly extending rod 2
  • a separable connector comprising, in combination, an'electrlc plug unit, at least one contact part at said plug unit, a socket unit, at least one coactixg contact part at said socket unit, a
  • corrugated tubular cover surrounding said socketunit and adapted to enclose the coacting contact parts air-tightly, a threaded ange on said cover, an. interiorly threaded member and a packing on said threaded ange for detachably and airtightly connecting one of said units to the cover, means for xedly securing said cover to the other of said units, and means connected with the last said means for preventing twisting of said tubular cover, said contact parts being engageable and disengageable within said cover, andssaid unitsy being separable upon disconnection of said threaded flange and said threaded member.
  • a separable connector comprising, in comf bination, an electric plug unit, at least one contact part of said plug unit, a socket unit, at least one coacting contact part at said socket unit, a corrugated tubular cover surrounding said socket unit and adapted to enclose the coacting contact f parts air-tightly, a threaded flange on said cover,
  • a separable connector comprising, in combination, an electric plug unit, at least one contact part at said plug unit, a socket unit, at least one coacting contact part at said socket unit, a corrugated tubular cover surrounding said socket unit andA adapted to enclose the coacting contact parts air-tightly, a threaded flange on said cover, an interiorly threaded member anda packing on said threaded flange for detachably and airtightly connecting one of said units to the cover, means for xedly securing said cover to the other of said units, means for preventing twisting of said tubular cover, means for permitting insertion of the plug into the socket only after said cover has been tightly secured to said detachable unit, a releasable locking member for retaining said plug in said socket, a pressure relief valve in said cover, means for supplying inert gas under pressure to the enclosure provided by cover, a control valve in the last said means, and means for open ing said control valve automatically when said plug is inserted

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
US214996A 1937-06-23 1938-06-21 Circuit breaker Expired - Lifetime US2230277A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE205322X 1937-06-23

Publications (1)

Publication Number Publication Date
US2230277A true US2230277A (en) 1941-02-04

Family

ID=5786565

Family Applications (1)

Application Number Title Priority Date Filing Date
US214996A Expired - Lifetime US2230277A (en) 1937-06-23 1938-06-21 Circuit breaker

Country Status (2)

Country Link
US (1) US2230277A (de)
CH (1) CH205322A (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610266A (en) * 1951-02-02 1952-09-09 Orion S Greeson Plug and receptacle
US2700141A (en) * 1952-06-16 1955-01-18 Herbert O Jones Detachable underwater electrical connector
US2724030A (en) * 1952-01-08 1955-11-15 Milwaukee Gas Specialty Co Condition responsive control device
US2753391A (en) * 1951-07-31 1956-07-03 Crouse Hinds Co Explosion proof flexible fixture hanger
DE1084345B (de) * 1956-02-23 1960-06-30 Busch Jaeger Duerener Metall Wasserdicht abgeschlossenes elektrisches Geraet
US2982937A (en) * 1957-10-01 1961-05-02 Bendix Corp High temperature lead assembly
US3038117A (en) * 1959-11-09 1962-06-05 Lockheed Aircraft Corp Pneumatic socket device for vibration testing
US3052784A (en) * 1960-04-19 1962-09-04 James A Ousley Manual arm-safe switch
US3087034A (en) * 1960-06-20 1963-04-23 Ling Altec Electronics Inc Vacuum switch
US3091750A (en) * 1959-10-29 1963-05-28 Anderson Electric Corp Electrical connector
US3138688A (en) * 1960-08-04 1964-06-23 Massachusetts Inst Technology High-current disconnect switch for multiple-leaf bus systems
US3394337A (en) * 1966-08-15 1968-07-23 Hughes Aircraft Co Connector securing device
US3495206A (en) * 1967-04-29 1970-02-10 Bolkow Gmbh Disengageable electric connector
US3555222A (en) * 1968-03-04 1971-01-12 Itt Vacuum switch with cylindrical guide means and annular field deflector means
US3649952A (en) * 1970-03-18 1972-03-14 Chance Co Ab Gas-separable electrical connector and method
US3944774A (en) * 1974-08-07 1976-03-16 Toyota Jidosha Kogyo Kabushiki Kaisha Electric switch having a sealed casing
US20110244708A1 (en) * 2008-12-25 2011-10-06 Tatsuya Hayashi Terminal block and method of assembling the same
US8241072B2 (en) 2008-04-25 2012-08-14 3M Innovative Properties Company Push-type connector
WO2022192406A1 (en) 2021-03-10 2022-09-15 Rincon Power, Llc Hermetically sealed manual disconnect with integrated bellows actuator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199356B (de) * 1960-08-24 1965-08-26 Otto Dunkel Schlagwetter- und explosionssichere Kupplungssteckvorrichtung

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610266A (en) * 1951-02-02 1952-09-09 Orion S Greeson Plug and receptacle
US2753391A (en) * 1951-07-31 1956-07-03 Crouse Hinds Co Explosion proof flexible fixture hanger
US2724030A (en) * 1952-01-08 1955-11-15 Milwaukee Gas Specialty Co Condition responsive control device
US2700141A (en) * 1952-06-16 1955-01-18 Herbert O Jones Detachable underwater electrical connector
DE1084345B (de) * 1956-02-23 1960-06-30 Busch Jaeger Duerener Metall Wasserdicht abgeschlossenes elektrisches Geraet
US2982937A (en) * 1957-10-01 1961-05-02 Bendix Corp High temperature lead assembly
US3091750A (en) * 1959-10-29 1963-05-28 Anderson Electric Corp Electrical connector
US3038117A (en) * 1959-11-09 1962-06-05 Lockheed Aircraft Corp Pneumatic socket device for vibration testing
US3052784A (en) * 1960-04-19 1962-09-04 James A Ousley Manual arm-safe switch
US3087034A (en) * 1960-06-20 1963-04-23 Ling Altec Electronics Inc Vacuum switch
US3138688A (en) * 1960-08-04 1964-06-23 Massachusetts Inst Technology High-current disconnect switch for multiple-leaf bus systems
US3394337A (en) * 1966-08-15 1968-07-23 Hughes Aircraft Co Connector securing device
US3495206A (en) * 1967-04-29 1970-02-10 Bolkow Gmbh Disengageable electric connector
US3555222A (en) * 1968-03-04 1971-01-12 Itt Vacuum switch with cylindrical guide means and annular field deflector means
US3649952A (en) * 1970-03-18 1972-03-14 Chance Co Ab Gas-separable electrical connector and method
US3944774A (en) * 1974-08-07 1976-03-16 Toyota Jidosha Kogyo Kabushiki Kaisha Electric switch having a sealed casing
US8241072B2 (en) 2008-04-25 2012-08-14 3M Innovative Properties Company Push-type connector
US20110244708A1 (en) * 2008-12-25 2011-10-06 Tatsuya Hayashi Terminal block and method of assembling the same
US8210865B2 (en) * 2008-12-25 2012-07-03 3M Innovative Properties Company Terminal block and method of assembling the same
US20120238156A1 (en) * 2008-12-25 2012-09-20 3M Innovative Properties Company Terminal block and method for assembling the same
WO2022192406A1 (en) 2021-03-10 2022-09-15 Rincon Power, Llc Hermetically sealed manual disconnect with integrated bellows actuator
EP4305652A4 (de) * 2021-03-10 2024-11-06 Rincon Power, LLC Hermetisch abgedichtete handtrennkupplung mit integriertem balgaktuator
US12548717B2 (en) 2021-03-10 2026-02-10 Rincon Power, Llc Hermetically sealed manual disconnect with integrated bellows actuator

Also Published As

Publication number Publication date
CH205322A (de) 1939-06-15

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